CA2304155A1 - Water-sensitive compositions - Google Patents

Water-sensitive compositions Download PDF

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Publication number
CA2304155A1
CA2304155A1 CA 2304155 CA2304155A CA2304155A1 CA 2304155 A1 CA2304155 A1 CA 2304155A1 CA 2304155 CA2304155 CA 2304155 CA 2304155 A CA2304155 A CA 2304155A CA 2304155 A1 CA2304155 A1 CA 2304155A1
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CA
Canada
Prior art keywords
fibers
water
nonwoven fabric
fiber
multicomponent fiber
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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CA 2304155
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French (fr)
Inventor
Fu-Jya Tsai
William S. Pomplun
Pavneet S. Mumick
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Kimberly Clark Worldwide Inc
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Individual
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Publication of CA2304155A1 publication Critical patent/CA2304155A1/en
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Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15203Properties of the article, e.g. stiffness or absorbency
    • A61F13/15211Properties of the article, e.g. stiffness or absorbency soluble or disintegratable in liquid
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/10Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2929Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2929Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
    • Y10T428/2931Fibers or filaments nonconcentric [e.g., side-by-side or eccentric, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3179Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
    • Y10T442/3301Coated, impregnated, or autogenous bonded
    • Y10T442/3317Woven fabric contains synthetic polymeric strand material
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/637Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/637Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
    • Y10T442/641Sheath-core multicomponent strand or fiber material

Abstract

The present invention is directed to thermoformable ion-sensitive compositions having improved processability. In addition, the present invention is directed to a process of making water-dispersible fibers, films and fabrics, which maintain their structural integrity and strength when in use, but dissolve and disperse when placed in contact with large amounts of water, such as in a conventional sink or toilet. Moreover, the present invention is directed to water-dispersible products, including flushable products such as personal care products, diapers, incontinence devices, release liners, feminine napkins, product packaging, etc., which contain fibers, films and fabrics formed from the water-sensitive compositions.

Description

WATER-SENSITIVE COMPOSITIONS
io FIELD OF THE INVENTION
The present invention is directed to water-sensitive compositions having improved processability. In addition, the present invention is directed to a process of making water-dispersible thermoformable articles, such as fibers, films and fabrics, which maintain their integrity and strength when in use, but dissolve and disperse when placed in contact with large amounts of water, such as in a conventional toilet. Moreover, the present invention is directed to water-dispersible products, including flushable products such as personal care products, diapers, feminine napkins, wipes, incontinence products, release liners, 2o product packaging, etc., which contain the above-mentioned fibers, films and fabrics.
BACKGROUND OF THE INVENTION
Disposable products have revolutionized modern lifestyle and 25 are of great convenience to society. Such products generally are relatively inexpensive, sanitary and quick and easy to use. Disposal of such products, however, is a concern as landfills close and incineration contributes to urban smog and pollution. ' Consequently, there is an urgent need for disposable products that can be disposed of without dumping o r 3o incineration. An ideal disposal alternative would be the use of municipal sewage treatment plants and private residential septic systems. Products suited for disposal in sewage systems that can be flushed down a con-ventional toilet are termed "flushable." An essential feature of flushable products is that they must have sufficient wet strength for their intended 35 use, yet lose structural integrity upon contact with water.
Numerous attempts have been made to produce flushable fibers, fabrics, films and adhesives that retain their integrity and wet z strength during use, yet can be disposed of via flushing in conventional toilets. One approach to producing a flushable product is to limit the size of the product so that it will readily pass through plumbing without causing obstructions or blockages. Such products have high wet strength, yet do not disintegrate during flushing. Examples of this type of product include wipes such as baby wipes. This approach to flushability suffers the disadvantage, however, of being restricted to small sized articles. Many of the current flushable products are limited to such small articles.
Another approach to producing a flushable product is to 1 o manufacture a product that is normally insoluble in water, but which disintegrates in the presence of alkaline or acidic aqueous solutions. The end user is provided with an alkaline or acidic material to add to the water in which the product is to be disposed. This approach permits disposal via normal plumbing systems of products substantially larger than wipes, but suffers from the disadvantage of forcing the user to perform the step of adding the dissolving chemical to the water. A further disadvantage is that the inadvertent or unintentional disposal of such a product in a conventional toilet without the addition of the dissolving chemical can cause serious obstruction or blockage of the plumbing system. The latter 2o disadvantage can, however, be overcome by incorporating the dissolving acid or alkali into the article but separate from the dissolvable material while in use. The dissolving chemical is only released upon contact with water during flushing.
Another approach to producing a flushable product is to prepare products such as fibers, fabrics and films from water soluble materials. Upon contact with water, the water soluble material dissolves, reducing the structural integrity of the product, and causing its disintegra tion, such that it will easily pass through the plumbing system. Although the products prepared by this approach are suitable for dry applications 3o wherein the product does not come in contact with any aqueous solution, these products are not suited for applications, such as personal care products, wherein the product may come into contact with even a relatively small amount of aqueous solution.
One approach to producing thermoformable articles for use in personal care products, which can withstand prolonged contact with body fluids, such as blood, urine, and perspiration, has been the use of "ion triggerable" polymeric materials. Such "ion triggerable" polymeric materials remain stable when in contact with aqueous solutions having a relatively high ion concentration, but dissolve and disperse when placed in contact with aqueous solutions having a relatively iow ion concentration, such as ordinary tap water. In other words, the polymeric materials s possess "water triggerability." Ion triggerable polymeric materials have been used as binders for nonwoven webs and also as a thermoformable material. For example, a salt sensitive water soluble polyurethane binder for flushable nonwoven fabrics is disclosed in U.S. Patent No. 4,002,171, issued to Taft. Further, a salt sensitive water soluble terpolymer for to making flushable paper diapers, bandages and sanitary towels is disclosed in Japanese Patent No. JP 5125123 and U.S. Patent No. 5,312,883 assigned to LION Corp.
A more recent approach to forming ion triggerable articles is described in U.S. Patent Application Serial No. 08/730,951, assigned to ~5 Kimberly-Clark Worldwide, the assignee of the present invention. In U.S.
Patent Application Serial No. 08/730,951, thermoformable articles are prepared from ion triggerable materials. A preferred ion triggerable material, a copolyester which dissolves and disperses in tap water in no more than 60 minutes, offers good water responsiveness. However, the 2o copolyester exhibits processability constraints. Typically, the copolyester has poor melt strength, is very sticky, and is very difficult to stretch into a fine fiber without breaking. Past efforts have been made to try to improve the processability of the copolyester, but have failed. The resulting fibers possess a melt strength that is not high enough to ensure good fiber 25 processing into a desirable denier range (less than 7 denier per fiber). In addition, silicone oil based finishing agents were required to avoid the stickiness of the resulting fibers, which can affect adhesion properties of binder fibers.
What is needed in the art is a method of improving the 3o processability of existing water-sensitive polymeric materials. Also, what is needed in the art is water-sensitive thermoformable articles having improved processability wherein the articles maintain structural integrity when exposed to ionic aqueous solutions, such as body fluids, yet readily disperse when flushed down a conventional toilet. Further, what is needed 35 in the art is personal care products comprising thermoformable articles having improved processability wherein the personal care products maintain structural integrity when exposed to body fluids, such as blood, urine, perspiration, and other body fluids, yet readily disperse when flushed down a conventional toilet.
SUMMARY OF THE INVENTION
The present invention is directed to unique compositions which provide significantly improved processability. The compositions comprise a blend of at least one water-sensitive polymer and at least one polymer selected from polylactide (PLA), polyolefin-grafted with one or more polar groups, such as malefic anhydride (MA), and other aliphatic polyesters. Desirably, the water-sensitive polymer comprises one or more copolyesters. The compositions may be spun into monocomponent or multicomponent fibers through conventional processes, such as spunbonding and meltblowing processes. The compositions may also be extruded to form films and other thermoformable articles.
~ s The present invention is also directed to multicomponent fibers, such as sheath/core fibers, wherein the compositions described above are present on an outer surface of the multicomponent fiber. In sheath/core multicomponent fiber applications, the composition in the sheath structure has "ion triggerability" which allows water to dissolve the 2o sheath material, while the core materials are polymeric materials, such as polyolefins, which provide processing and binding strength and reduce the fiber cost. Other heteromorphic multicomponent fiber configurations suitable for the present invention include, but are not limited to, side-by-side, pie-shape, and island-in-the-sea fiber configurations. The resulting 25 fibers may be used to form air-laid nonwovens for use as coverstock, liners or absorbent webs in a variety of products including, but not limited to, personal care products.
The compositions of the present invention may also be used as a coating or co-extruded component of a flushable film for applications in 3o composite cloth-like outercover for flushable diapers, or as a baffle barrier film for feminine care napkins and adult incontinence products. The present invention has broad applicability for any single use flushable product requiring a barrier film, spun fiber, absorbent core, or any combination thereof.

DETAILED DESCRIPTION OF THE INVENTION
The present invention overcomes the previously mentioned processability problems associated with the production of thermoformable articles comprising water-sensitive polymers. The compositions of the s present invention not only significantly improve processability, but also maintain water triggerability. In the case of fibers, the improved processability is evidenced by a maximum jet stretching ratio and a reduction in fiber stickiness. In general, the compositions of the present invention comprise at least one water-sensitive polymer, desirably a copolyester, and at least one additional polymer selected from polylactide (PLA), polyolefin-grafted with one or more polar groups, such as malefic anhydride (MA), and other aliphatic polyesters.
Suitable water-sensitive polymers for the compositions of the present invention include polymers which remain stable when in contact is with aqueous solutions having a relatively high ion concentration, but dissolve and disperse when placed in contact with aqueous solutions having a relatively low ion concentration, such as ordinary tap water. Typically, the polymer contains one or more ion sensitive functional group, such as sulfonate and carboxylate groups. Polymers for use in the present 2o invention include, but are not limited to, copolyesters available from National Starch and Chemical Company under the product designations NS
70-4395 and NS 70-4442; copolyesters available from Eastman Chemical Company (I~ingsport, Tennessee) under the product designations AQ29S, AQ38S, AQSSS, AQ 1350 and AQ 1950; and copolymers and terpolymers 25 of acrylic acids and/or acrylate esters, such as those available from Lion Corporation (Tokyo, Japan) or Belland (Switzerland). Particularly suitable polymers include the NS 70-4395 and NS 70-4442 copolyesters available from National Starch and Chemical Company.
The compositions of the present invention also contain at least 30 one additional polymer selected from polylactide (PLA), polyolefin grafted with one or more polar groups, such as malefic anhydride (MA), and other aliphatic polyesters. As used herein, the term "polylactide"
includes the polylactide polymer and copolymers thereof, such as a copolymer of optical isomers of lactide or copolymers such as lactide and 3s caprolactone copolymers. Suitable polyolefins to be grafted with one or more polar groups include, but are not limited to, polyethylene, polypropylene, ethylene-propylene copolymers, and polybutylene. Suitable polar groups for grafting onto the polyolefin polymer chain include, but are not limited to, malefic anhydride (MA), polyethylene glycol (PEG), polyethylene glycol methacrylate {PEGMA), hydroxyethyl methacrylate (HEMA), 2-ethylhexyl methacrylate (EHMA), vinyl alcohol, vinyl acetate, and other polar groups. Suitable other aliphatic polyesters include, but are not limited to, polybutylene succinate, polybutylene succinate-co-adipate, polycaprolactone, SKYGREENTM (See U.S. Patent No. 5,470,941; assigned to Sunkyoung Industries), and blends of the above-mentioned polymers.
Desirably, the at least one additional polymer component is a polyester 1 o having good compatibility with the water-sensitive polymer. More desirably, the at least one additional polymer component is a polylactide copolymer having a similar melt viscosity to the water-sensitive polymer.
The weight ratio of the water-sensitive polymer to the polylactide (PLA), polyolefin-grafted with one or more polar groups, o r other aliphatic polyesters, may vary greatly; however, certain applications, such as fine fibers, may require a particular weight ratio. Desirably, the weight ratio of water-sensitive polymer to the at least one additional polymer component is from about 60:40 to about 90:10. More desirably, the weight ratio of copolyester to the at least one additional polymer 2o component is from about 70:30 to about 90:10. More desirably, the weight ratio of water-sensitive polymer to the at least one additional polymer component is from about 75:25 to about 85:15. When the weight ratio of water-sensitive polymer to the at least one additional polymer component is less than about 60:40, the composition exhibits less than desirable ion triggerability and flushability for personal care products. When the weight ratio of water-sensitive polymer to the at least one additional polymer component is greater than about 90:10, the composition exhibits potential processability difficulty, especially in the case of the composition being spun into fine fibers. Table 1 below lists the properties of various fibers 3o comprising compositions of the present invention and unmodified fibers (i.e., fibers comprising a copolyester without processability-enhancing additives}.

Table 1 Polymer ViscosityProcess-Process- Minimum Urine Water Type (Pa.s) ability ability Denier StabilityDispers-at 180 (maxima (stickineAchieved ability C, IOOOs-1 m jet ss) (dpf}

stretch ratio NS 70- 28.7 poor very 8.0 fair excellent 4442 (29) sticky NS 70- 76.7 good none 1.3 excellentpoor 4442 (180) /PLA

(PLXS-2) NS 70- 72.7 good nona 1.3 excellentfair 4442 ( 180) /PLA

NS70- 62.3 good none 1.8 good fair 4442 (180) /PLA

NS70- 54.8 good n o n 1.8 good good a 4442 (128) /PLA

NS70- 52.1 fair none 2.3 excellentfair 4442 /PP (102) grafted * The maximum jet stretch ratio (MJSR) is the ratio of the fiber take-up rate to the linear extrusion rate.
The water-sensitive composition of the present invention may be thermoformed into a variety of articles including, but not limited to, fibers, fabrics, films and absorbents. The water-sensitive composition can be spun into monocomponent fibers or multicomponent fibers. As used to herein, the term "monocomponent fiber" means a fiber formed solely from the water-sensitive composition of the present invention. As used herein, the term "multicomponent fiber" means a fiber formed from the water-sensitive composition of the present invention and at least one other material. The water-sensitive fibers may be formed using any 1 s conventional fiber forming process including, but not limited to, meltblowing and spunbonding processes. The fibers may be continuous or discontinuous. Continuous fibers may be formed by any spinning operation. Continuous fibers may be cut to form discontinuous fibers having suitable lengths for nonwoven processes such as carding (approximate length of 25 to 45 mm) or air-laying (approximate length of 0.2 to 15 mm).
In one embodiment of the present invention, the water-sensitive composition may be thermoformed into multicomponent fibers, such as sheath/core fibers, wherein the water-sensitive compositions described above are present on at least a portion of the outer surface of the multicomponent fiber. Desirably, the multicomponent fibers are to bicomponent fibers wherein the water-sensitive composition of the present invention occupies at least a portion of the outer surface of the fiber and at least one additional material occupies the remainder of the fiber: More desirably, the bicomponent fiber has a sheath/core structure wherein the water-sensitive composition of the present invention forms the sheath, and a second material, such as a polymer having a melting temperature about 20°C or greater than the melting temperature of the sheath material, forms the core. Most desirably, the bicomponent fiber has a sheath/core structure wherein the water-sensitive composition of the present invention forms the sheath, and the core material is polypropylene (PP), polyethylene (PE), or 2o a combination thereof. In sheath/core multicomponent fiber applications, the composition in the sheath structure has "ion triggerability" which allows water to dissolve the sheath material, while the core materials are polymeric materials, such as polyolefins, which provide improved processing and binding strength and reduce the fiber cost. Although a concentric sheath/core fiber structure is a desirable embodiment, any other heteromorphic fiber configuration may be used including, but not limited to, pie shape, side-by-side, and island-in-the-sea etc., to achieve different degrees of triggerability, mechanical and tactile properties depending on the end use of the water-sensitive fibers. For flushable fiber applications, 3o desirably the water-sensitive composition represents a continuous phase through the fiber so that the fiber disperses when placed in a conventional toilet.
The water-sensitive fibers of the present invention may be used alone or combined with other fibrous materials to form nonwoven, as well as, woven fabrics. In one embodiment of the present invention, the water-sensitive fibers of the present invention are useful as binder fibers alone or in combination with other fibrous material to form a nonwoven web. Other fibrous materials for use with the water-sensitive fibers of the present invention include natural fibers, synthetic fibers, and combinations thereof. The choice of fibers depends upon, for example, fiber cost and the intended end use of the finished fabric. For instance, suitable fabrics s may include the water-sensitive fibers of the present invention and natural fibers including, but not limited to, cotton, linen, jute, hemp, wool, and wood pulp. Similarly, regenerated cellulosic fibers such as viscose rayon and cuprammonium rayon, modified cellulosic fibers, such as cellulose acetate, or synthetic fibers such as those derived from polyvinyl alcohol, 1o polyesters, polyamides, polyacrylics, etc., alone or in combination with one another, may likewise be used in combination with the water-sensitive fibers of the present invention.
Depending on the end use of the finished fabric, the fiber length may be important in producing the fabrics of the present invention.
1 s In some embodiments such as flushable products, fiber length is of more importance. The minimum length of the fibers depends on the method selected for forming the fibrous substrate. For example, where the fibrous substrate is formed by carding, the length of the fiber should usually be at least about 30 mm in order to insure uniformity. Where the fibrous 2o substrate is formed by air-laid or wet-laid processes, the fiber length may desirably be about 0.2 to 15 mm, more desirably about 0.2 to 6 mm.
Although fibers having a length of greater than 50 mm are within the scope of the present invention, it has been determined that when a substantial quantity of fibers having a length greater than about 15 mm is 25 placed in a flushable fabric, though the fibers will disperse and separate in water, their length tends to form "ropes" of fibers which can become entangled in home lateral piping obstructions, such as tree roots or bends in the piping. Therefore, for these products, it is desired that the fiber length be about 15 mm or less so that the fibers will not have a tendency to 30 "rope" when they are flushed through a toilet. Although fibers of various length are applicable in the present invention, desirably fibers are of a length less than about 15 mm so that the fibers separate easily from one another when in contact with water, most desirably ranging from about 0.2 mm to about 6 mm in length.
35 Nonwoven fabrics containing the water-sensitive fibers of the present invention may be formed from a single layer or multiple layers.
In the case of multiple layers, the layers are generally positioned in a juxtaposed or surface-to-surface relationship and all or a portion of the layers may be bound to adjacent layers. The nonwoven fabrics may also be formed from a plurality of separate nonwoven webs wherein the separate nonwoven webs may be formed from single or multiple layers. In those s instances where the nonwoven web includes multiple layers, one or more of the multiple layers may contain water-sensitive fibers of the present invention.
The water-sensitive fibers of the present invention, alone or in combination with one or more additional fibers, are particularly useful for 1o forming air-laid nonwoven fabrics. Air-laid fabrics find particularly useful application as body-side liners, fluid distribution materials, fluid in-take materials (surge), cover stock and absorbent structures for various water-dispersible personal care products. The basis weights for these air-laid nonwoven fabrics will usually range from about 10 to about 200 gram ~ 5 per square meter (gsm). Short fibers of length less than about 15 mm are desirably used to make these flushable products. Surge or in-take materials need better resiliency and higher loft so at least some of the fibers in these air-laid nonwoven fabrics have a fiber titre of about 3 denier (d) o r greater, more desirably about 6 denier (d) or greater. A desirable final 2o density for the surge or in-take materials is between about 0.025 and about 0.050 grams per cubic centimeter (g/cc). Fluid distribution materials will have a higher density, in the desired range of about 0.10 to about 0.20 g/cc using at least some fibers of lower denier, most desirably, at least some fibers having a denier of about 3 d or less.
25 The water-sensitive compositions of the present invention may also be used in cast film and/or blown film applications. Films formed from the water-sensitive compositions of the present invention may be made entirely of the water-sensitive composition of the present invention or may contain the water-sensitive composition, as well as, other polymeric 3o materials: Additionally, films may also be made by mixing various water-sensitive compositions. Desirably, the resulting film will contain a continuous phase of one or more water-sensitive compositions so that the film will disperse when placed in contact with water. Desirably, films formed from the water-sensitive composition of the present invention 35 comprise at least 50 vol% of the water-sensitive composition of the present invention. More desirably, films formed from the water-sensitive composition of the present invention comprise from about 50 to about 90 vol% of the water-sensitive composition of the present invention. Most desirably, films formed from the water-sensitive composition of the present invention comprise from about 70 to about 90 vol% of the water-sensitive composition of the present invention.
The thickness of the film may vary greatly depending upon the end use of the film-containing product. Film thickness should be minimized when possible to reduce product cost and to reduce the time necessary for the film to disperse, especially in the case of flushable products. Desirably, the film thickness will be less than about 2.0 mil io (50.8 micrometers). More desirably, the water-soluble film thickness will be from about 0.1 mil (2.54 micrometers) to about 1.0 mil (25.4 micrometers). Most desirably, the water-soluble film thickness will be from about 0.3 mil (7.62 micrometers) to about 1.0 mil (25.4 micrometers).
~ s In one embodiment of the present invention, films formed from the water-sensitive composition of the present invention may be combined with one or more additional polymer films to impart specific mechanical, biodegradable, barrier and/or tactile properties to the film combination. Desirably, at least one film formed from the water-sensitive 2o composition of the present invention is co-extruded with one or more additional polymer films to form a composite film.
In some embodiments, it may be desirable to incorporate one or more additives into the water-sensitive composition of the present invention. One or more additives may be added to the water-sensitive 25 composition of the present invention to aid in the melt-processing applications described above. It should be noted that although fibers and films are desirable products formed from the water-sensitive composition of the present invention, other articles of manufacture may also be produced from the water-sensitive composition of the present invention.
3o Such articles include, but are not limited to, compression molded articles, blow molded articles, injection molded articles, foam sheets and coated articles. Additives may be used in any of the above-mentioned articles.
Further, additives may be used to provide one or more desired properties to articles formed from the water-sensitive composition of the present 35 invention. Suitable additives include, but are not limited to, compatibilizers, processing aids, dispersants, slip agents, thickening agents, anti-foaming agents, and anti-microbial agents, antioxidants, as fabricating agents or as modifiers depending on the specific properties desired in the final product.
The fabrics and films of the present invention may be incorporated into such body fluid absorbent products as sanitary napkins, diapers, surgical dressings, tissues, wet wipes, incontinence devices and the like. These products may include an absorbent core, comprising one o r more layers of an absorbent fibrous material. The core may also comprise one or more layers of a fluid-pervious element, such as fibrous tissue, gauze, plastic netting, etc. These are generally useful as wrapping to materials to hold the components of the core together. Additionally, the core may comprise a fluid-impervious element or barrier means to preclude the passage of fluid through the core and on the outer surfaces of the product. Preferably, the barrier means also is water-dispersible. A
film of a polymer having substantially the same composition as the aforesaid water-sensitive composition is particularly well-suited for this purpose. In accordance with the present invention, the polymer compositions are useful for forming each of the above-mentioned product components including the layers of absorbent core, the fluid-pervious element, the wrapping materials, and the fluid-impervious element o r 2o barrier means.
Those skilled in the art will readily understand that the water-sensitive compositions of the present invention may be advantageously employed in the preparation of a wide variety of products designed to withstand contact with salt solutions, yet disperse in large amounts of water. Such products may only comprise a single layer of the water-sensitive composition in the form of a layer of fibers, a film or a fabric, o r may comprise the water-sensitive composition in the form of a layer of fibers, a film or a fabric in combination with one or more additional layers such as coatings, films, fabrics, etc. Although the water-sensitive 3o composition and articles formed therefrom of the present invention are particularly suited for personal care products, the water-sensitive composition and articles formed therefrom of the present invention may be advantageously employed in the preparation of a wide variety of consumer products other than personal care products.
The present invention is further illustrated by the following examples, which are not to be construed in any way as imposing limitations upon the scope thereof. On the contrary, it is to be clearly understood that resort may be had to various other embodiments, modifications, and equivalents thereof which, after reading the description herein, may suggest themselves to those skilled in the art without departing from the spirit of the present invention and/or the scope of the appended claims.

(Control, Non-modified) A copolyester from National Starch, NS 70-4442, was spun using a Kimberly-Clark laboratory fiber spinning line. The spinning line to consisted of a 3/4" (1.905 cm) diameter, 24:1 length to diameter ratio extruder with 3 heating zones, which feeds into a spin pump, through a 3/4" ( 1.905 cm) KOCH~SMX static mixer unit, and then into the spinning head. Fibers were spun through 15 holes of 20 mil (0.508 mm) diameter.
The fibers were quenched at 17°C and drawn down to where it was either formed directly into a nonwoven or collected for further processing (i.e., crimping and cutting for production of staple and short-cut fibers) before being formed into a nonwoven.
The resulting fibers had very poor melt strength, as evidenced by a very low maximum jet stretch ratio (MJS=29 as listed in the Table).
2o In addition, the resulting fibers had a tendency to stick together even at room temperature due to the high sensitivity to moisture and adhesive properties, making fiber handling very difficult.

(Monocomponent Fiber 75:25) A blend of copolyester NS 70-4442 and a polylactide (CPX 5-2, a copolymer containing 95:5 levorotary (L):dextrorotary (D) isomers of PLA from Chronopol) was compounded at a 75:25 weight ratio in a twin screw-extruder. The resin blend was extruded into fibers using a 3o Kimberly-Clark laboratory fiber spinning line as described in Example 1.
Fibers were spun through 15 holes of 20 mil (0.508 mm) diameter. The fibers were quenched at 17°C and drawn down to where it was either formed directly into a nonwoven or collected for further processing (i.e., crimping and cutting for production of staple and short-cut fibers) before being formed into a nonwoven.
The above 75:25 blend processed much better than the 100 wt% NS 70-4442 of Example 1 due to the blend's improved melt strength, as evidenced by significantly improved maximum jet stretch ratio (MJS=180 as listed in the Table), reduced stickiness, and reduced moisture sensitivity. The resulting fibers retained integrity in a 1 wt% sodium sulfate solution and lost significant strength in deionized water.
One possible mechanism for the improved stability in sodium sulfate solution is that sodium ions bind to the sulfonate groups of the ion-sensitive copolyester, thereby reducing the hydrophilicity of these groups on the polymer. At the same time, the sulfate ions structure the water molecules such that the hydrophobic parts of the copolyester are squeezed out of the water, increasing interpolymer interactions and reducing solubility. These two mechanisms together stabilize the polymer in sodium sulfate solution, or other salt solutions, with subsequent dissolution/dispersion in excess tap water.
1 s EXAMPLE 3 (Monocomponent Fiber 80:20) A blend of copolyester NS 70-4442 and PLA (CPX 5-2) was compounded at a 80:20 weight ratio in a twin screw-extruder. The resin blend was extruded into fiber using a Kimberly-Clark laboratory fiber 2o spinning line as described in Example 1. Fibers were spun through 15 holes of 20 mil (0.508 mm) diameter. The fibers were quenched at 17°C
and drawn down to where it was either formed directly into a nonwoven or collected for further processing (i.e., crimping and cutting for production of staple and short-cut fibers) before being formed into a 25 nonwoven.
As in Example 2, the 80:20 blend processed much better than the 100 wt% NS 70-4442 of Example 1 due to the blend's improved melt strength, as evidenced by significantly improved maximum jet stretch ratio (MJS=180 as listed in the Table), reduced stickiness, and reduced moisture 3o sensitivity. The resulting fibers retained integrity in a 1 wt% sodium sulfate solution and lost significant strength in deionized water.

(Bicomponent 75:25) 3s A blend of copolyester NS 70-4442 and PLA (CPX 5-2) was compounded at a 75:25 weight ratio in a twin screw-extruder.
Bicomponent fibers with a core/sheath (1/1) structure were prepared by is using the blend as the sheath material and polypropylene (PP) having a melt flow rate of 80 g/10 min, from Chisso Corporation (Osaka, Japan), as the core material. Fiber spinning was conducted on a bicornponent spinning line using two identical extruders having specifications identical to s those described above in Examples 1-3. The fiber components were fed into a sheath/core bicomponent spin pack and spun through 12 mil (0.305 mm) diameter holes. Likewise, the fibers were quenched and drawn down at 17°C to where it was either formed into a nonwoven or collected for further processing (i.e., crimping and cutting for production of staple and 1 o short-cut fibers) before being formed into a nonwoven.
The 75:25 blend processed much better due to its improved melt strength, as evidenced by a significantly improved maximum jet stretch ratio (MJS=105), reduced stickiness, and reduced moisture sensitivity as compared with the fibers of Example 1 made with 100% NS
is 70-4442. Less sensitivity to moisture and reduced stickiness made the fibers much easier to handle during processing.

(Bicomponent Fiber 80:20) 2o A blend of copolyester NS 70-4442 and PLA (CPX 5-2) was compounded at a 80:20 weight ratio in a twin screw-extruder.
Bicomponent fibers with a core/sheath (1/1) structure were prepared by using the blend as the sheath material and polypropylene (PP) having a melt flow rate of 80 g/10 min, from Chisso Corporation, as the core 2s material. Fiber spinning was conducted on a bicomponent spinning line using two identical extruders as described above in Example 4. The fiber components were fed into a sheath/core bicomponent spin pack and spun through 12 mil (0.305 mm) diameter holes. Likewise, the fibers were quenched and drawn down at 17°C to where it was either formed into a 3o nonwoven or collected for further processing (i.e., crimping and cutting for production of staple and short-cut fibers) before being formed into a nonwoven.
The 80:20 blend processed much better due to its improved melt strength, as evidenced by a significantly improved maximum jet 35 stretch ratio (MJS=105), reduced stickiness, and reduced moisture sensitivity as compared with the fibers of Example 1 made with 100% NS

' CA 02304155 2000-03-16 70-4442. Less sensitivity to moisture and reduced stickiness made the fibers much easier to handle during processing.

(Bicomponent Fiber, Non-Modified, Large Scale) Bicomponent fiber with core/sheath ( 1 / 1 ) structure was prepared by using copolyester NS 70-4442 as the sheath material and polypropylene having a melt flow rate of 80 g/10 min (Chisso Corporation) as the core material. Fiber spinning was conducted on a 1 o bicomponent spinning line using two identical extruders, feeding into a sheath/core bicomponent spin pack and through 350 holes of 0.6 mm diameter. The fibers were quenched and drawn down at 17°C. The fiber bundle passed through a finishing agent bath containing Dow Corning 200, a polydimethylsiloxane having a viscosity of 200 centistokes. The fiber bundle was then collected for further processing (i.e., crimping and cutting for production of staple and short-cut fibers) before being formed into a nonwoven. The resulting fibers had a tendency to stick together even at room temperature due to the high sensitivity to moisture and adhesive properties, making fiber handling very difficult and making crimping 2o processing impossible. The finest non-crimped fiber produced was 7.9 dpf.

(Bicomponent Fiber blend 80:20, large scale) A blend of copolyester NS 70-4442 and PLA (CPX 5-2) in a 80:20 ratio was compounded with a twin-screw extruder. Bicomponent fibers with a sheath/core (1/1) structure were prepared using this blend as the sheath component and polypropylene having a melt flow rate of 80 g/ 10 min (Chisso Corporation) as the core material. The spinning was 3o conducted on a pilot scale bicomponent spinning line using two identical extruders, having the same specifications identified in Example 6, feeding into a sheath/core bicomponent spin pack and through 350 holes of 0.6 mm diameter. Likewise, the fibers were quenched and drawn down at 17°C.
The resulting fibers did not stick together as in Example 6. At this point, the fiber bundle was optionally passed through a finish agent bath, for example, a bath containing Dow Corning 200. The fiber bundle was then collected for further processing (i.e., crimping and cutting for production of staple and short-cut fibers) before being formed into a nonwoven. The blend processed much better due to its improved melt strength, as evidenced by significantly improved maximum jet stretch ratio, reduced stickiness, and reduced moisture sensitivity as compared with fibers made s with 100% NS 70-4442. Lessened sensitivity to moisture and reduced adhesive properties made the fibers much easier to handle during processing. The resulting fibers were able to be crimped and drawn to about 3.5 dpf.
1 o EXAMPLE 8 A blend of copolyester NS 70-4442 and PLA (CPX 5-2) in a 80:20 ratio was compounded with a twin-screw extruder. Bicomponent fibers with a sheath/core (1/1) structure were prepared using this blend as the sheath component and polypropylene having a melt flow rate of 80 15 g/10 min (Chisso Corporation) as the core material. The spinning was conducted on a pilot scale bicomponent spinning line using two identical extruders, having the same specifications identified in Example 6, feeding into a sheath/core bicomponent spin pack and through 350 holes of 0.6 mm diameter. Likewise, the fibers were quenched and drawn down at 17°C to 2o form filaments of 3.4-3.8 denier/filament. Concentric sheath/core fibers having a light crimp were cut to a length of 6 mm. The bicomponent fibers, designated WDF-02, were then used as binder fibers to make a nonwoven fabric.
A nonwoven fabric was produced by blending 40 wt% Novalis 25 (Lyon, France) nylon 6/6 staple fibers (6 mm cut length), 17 wt%
_ conventional Hoechst-Celanese T-255 bicomponent binder fibers containing a "tackified" polyolefin sheath and a polyester core, and 43 wt% of the WDF-02 binder fibers. The T-255 binder fibers were added to further enhance the in-use strength of the nonwoven fabric, while maintaining ion 3o triggerability of the fabric. The blend of fibers was passed through a Dan-web machine at a temperature of 145°C to air bond the fibers. The fibers were further compacted using an embossing roll at a temperature of 110°C
and 6.5 bar pressure to produce a 32 grams/square meter (basis weight) nonwoven using the Dan-web forming process. Measured tensile strengths 3s of the nonwoven fabric in the machine and cross machine directions were 638 grams and 329 grams per 50 mm width, respectively. After immersion in a solution containing one weight percent anhydrous sodium sulfate for 5 minutes, the machine and cross machine direction tensile strengths were found to be 124 grams and 62 grams per 50 mm width, respectively.
s The nonwoven coverstock was placed in a diaper as a body side liner and repeatedly insulted with 50 milliliters of saline solution (0.85% sodium chloride, by weight) for a total of 150 milliliters over a one hour period in an abrasion test. The body side liner was found to survive the abrasion test without pilling, delamination (from construction 1o adhesive), or formation of holes and tears.

A nonwoven fabric was produced by blending 40 wt% Novalis nylon 6/6 staple fibers (6 mm cut length), 20 wt% T-255 bicomponent 1 s binder fibers, and 40 wt% of the WDF-02 binder fibers. The blend of fibers was passed through a Dan-web machine at a temperature of 145°C
to air bond the fibers. The fibers were further compacted using an embossing roll at a temperature of 110°C and 6.5 bar pressure to produce a 30 g/m2 nonwoven using the Dan-web forming process. Measured tensile 2o strengths in the machine and cross machine directions were 739 grams and 584 grams per 50 mm width, respectively. After immersion in a solution containing one weight percent anhydrous sodium sulfate for 5 minutes, the machine and cross machine direction tensile strengths were found to be 309 grams and 263 grams per 50 mm width, respectively. When the material 2s first soaked in sodium sulfate solution was then subsequently placed in deionized water for a period of 14 hours, the machine direction tensile strength was found to be 239 grams per 50 mm width.

3o A nonwoven fabric was produced by blending 40 wt% Novalis nylon 6/6 staple fibers (6 mm cut length), 15 wt% T-255 bicomponent binder fibers, and 45 wt% of the WDF-02 binder fibers. The blend of fibers was passed through a Dan-web machine at a temperature of 145°C
to air bond the fibers. The fibers were further compacted using an 3s embossing roll at a temperature of 110°C and 6.5 bar pressure to produce a 29 g/m2 nonwoven using the Dan-web forming process. Measured tensile strengths in the machine and cross machine directions were 715 grams and WO 99/18269 PC"T/US98/20537 668 grams per 50 mm width, respectively. After immersion in a solution containing one weight percent anhydrous sodium sulfate for 5 minutes, the machine and cross machine direction tensile strengths were found to be 145 grams and 163 grams per 50 mm width, respectively. When the material first soaked in sodium sulfate solution was then subsequently placed in deionized water for one hour, the machine direction tensile strength was found to be 84 grams per 50 mm width.

1 o A nonwoven fabric was produced by blending 40 wt%
Courtaulds (U.K.) LYOCELLTM fibers (3 denier/filament, 6 mm cut length), 20 wt% T-255 bicomponent binder fibers, and 40 wt% of the WDF-02 binder fibers. The blend of fibers was passed through a Dan-web machine at a temperature of 145°C to air bond the fibers. The fibers were further compacted using an embossing roll at a temperature of 110°C and 6.5 bar pressure to produce a 30 g/m2 nonwoven using the Dan-web forming process. Measured tensile strengths in the machine and cross machine directions were 333 grams and 245 grams per 50 mm width, respectively. After immersion in a solution containing one weight percent 2o anhydrous sodium sulfate for 5 minutes, the machine and cross machine direction tensile strengths were found to be 193 grams and 146 grams per 50 mm width, respectively. When the material first soaked in sodium sulfate solution was then subsequently placed in deionized water for one hour, the machine direction tensile strength was found to be 121 grams per 50 mm width.

A nonwoven fabric was produced by blending 40 wt%
polyethylene terephthalate (PET) staple fibers from MiniFibers Inc.
(Johnson City, Tennessee) (3 denier/filament, 6 mm cut length), 20 wt% T
255 bicomponent binder fibers, and 40 wt% of the WDF-02 binder fibers.
The blend of fibers was passed through a Dan-web machine at a temperature of 145°C to air bond the fibers. The fibers were further compacted using an embossing roll at a temperature of 110°C and 6.5 bar pressure to produce a 25 g/m2 nonwoven using the Dan-web forming process.

A nonwoven absorbent structure was produced by blending 70 wt% Weyerhauser (Federal Way, Washington) NB416 pulp fibers, 3 wt%
T-255 bicomponent binder fibers, and 27 wt% of the WDF-02 binder 5 fibers. The blend of fibers was passed through a Dan-web machine at a temperature of 145°C to air bond the fibers to form a 120 g/m2 absorbent web using the Dan-web forming process. Measured cohesion ("z"
direction strength) of the web was 0.31 kilograms. The web dispersed in ordinary tap water.
to A nonwoven absorbent structure was produced by blending 70 wt% Weyerhauser NB416 pulp fibers, 6 wt% T-255 bicomponent binder fibers, and 24 wt% of the WDF-02 binder fibers. The blend of fibers was 15 passed through a Dan-web machine at a temperature of 145°C to air bond the fibers to form a 120 g/m2 absorbent web using the Dan-web forming process. Measured cohesion ("z" direction strength) of the web was 0.53 kilograms. The web dispersed very slowly in ordinary tap water.

A nonwoven absorbent structure was produced by blending 70 wt% Weyerhauser NB416 pulp fibers, 5 wt% T-255 bicomponent binder fibers, and 25 wt% of the WDF-02 binder fibers. The blend of fibers was passed through a Dan-web machine at a temperature of 145°C to air bond the fibers to form a 118 g/m2 absorbent web using the Dan-web forming process. Measured cohesion ("z" direction strength) of the web was 0.43 kilograms. Measured tensile strengths in the machine and cross machine directions were 417 grams and 472 grams/50 mm width, respectively. The 3o web dispersed slowly in ordinary tap water.

A nonwoven intake (surge) absorbent structure was produced by blending 35 wt% Weyerhauser NB416 pulp fibers, 35 wt%
polyethylene terephthalate (PET) staple fibers from MiniFibers Inc. (6 denier/filament, 6 mm cut length), 5 wt% T-255 bicomponent binder fibers, and 25 wt% of the WDF-02 binder fibers. The blend of fibers was passed through a Dan-web machine at a temperature of 145°C to air bond the fibers to form a 120 g/m2 body fluid intake web using the Dan-web forming process. Measured cohesion ("z" direction strength) of the web was 0.33 kilograms. The body fluid intake web has a bulk thickness of 59 mils ( 1.5 mm), a density of 0.084 grams per cubic centimeter, a void volume of 12 cubic centimeters per gram, and an air porosity of 327 cubic feet per minute.

to (Blown Film 80:20 blend) A blend of copolyester NS 70-4442 and PLA (CPX 5-2) in a 80:20 ratio was compounded with a twin screw-extruder. The resulting resin was measured to have a melt index of 58 g/10 min at 160°C (based on ASTMD 1238). Blown films of the resulting resin were prepared using a standard blown film machine. The extruder on the machine was operated under the following temperature profile: ( 1 ) the feed zone temperature:
180°F (82.2°C); (2) the barrel zone temperature: 210°F
(98.9°C); (3) the adapter temperature: 230°F ( 110.0°C); and (4) the die temperature: 250°F
(121.1°C). Uniform blown films were obtained under these process 2o conditions.

(Control Blown Film: non-modified) Blown films of 100% copolyester NS 70-4442 resin were unable to be prepared using the blown film machine and process conditions of Example 17. The resin had a very poor melt strength and was too sticky to be processed into a film.
The above disclosed examples are preferred embodiments and 3o are not intended to limit the scope of the present invention in any way.
Various modifications and other embodiments and uses of the disclosed water-sensitive compositions, apparent to those of ordinary skill in the art, are also considered to be within the scope of the present invention.

Claims (25)

What Is Claimed Is:
1. A multicomponent fiber comprising at least one water-sensitive polymer and at least one additional polymer, the at least one additional polymer being a polylactide, a polyolefin-grafted with one or more polar groups, or a second aliphatic polyester.
2. The multicomponent fiber of Claim 1, wherein the at least one water-sensitive polymer comprises a copolyester, a copolymer or terpolymer of acrylic acid, a copolymer or terpolymer of acrylate ester, or a blend thereof.
3. The multicomponent fiber of Claim 1, wherein the weight ratio of the water-sensitive polymer to the at least one additional polymer is from about 60:40 to about 90:10.
4. The multicomponent fiber of Claim 3, wherein the weight ratio of the water-sensitive polymer to the at least one additional polymer is from about 70:30 to about 80:20.
5. The multicomponent fiber of Claim 1, wherein the multicomponent fiber is a sheath/core fiber, wherein the water-sensitive polymer and the at least one additional polymer is present in the sheath of the multicomponent fiber.
6. The multicomponent fiber of Claim 5, wherein the core comprises a polymeric material having a melting temperature about 20°C
or greater than the melting temperature of the sheath.
7. The multicomponent fiber of Claim 1, wherein the polylactide comprises a linear polylactide, a branched polylactide, a copolymer of optical isomers of lactide, a copolymer of lactide and caprolactone, or a blend thereof.
8. The multicomponent fiber of Claim 1, wherein the one or more polar groups comprise malefic anhydride, polyethylene glycol, polyethylene glycol methacrylate, hydroxyethyl methacrylate, 2-ethylhexyl methacrylate, vinyl alcohol, vinyl acetate, or combinations thereof.
9. The multicomponent fiber of Claim 1, wherein the second aliphatic polyester comprises polybutylene succinate, polybutylene succinate-co-adipate, polycaprolactone, or a blend thereof.
10. A fabric comprising the multicomponent fiber of Claim 5.
11. The fabric of Claim 9, wherein the fabric comprises a nonwoven fabric.
12. The nonwoven fabric of Claim 11, wherein the fabric comprises one or more fibers in addition to the multicomponent fiber, wherein at least the multicomponent fiber is a binder fiber for the nonwoven fabric.
13. A nonwoven fabric comprising a plurality of multicomponent fibers, wherein each multicomponent fiber comprising at least one water-sensitive polymer and at least one additional polymer, the at least one additional polymer being a polylactide, a polyolefin-grafted with one or more polar groups, or a second aliphatic polyester.
14. The nonwoven fabric of Claim 13, wherein the at least one water-sensitive polymer comprises a copolyester, a copolymer or terpolymer of acrylic acid, a copolymer or terpolymer of acrylate ester, or a blend thereof.
15. The nonwoven fabric of Claim 13, wherein the weight ratio of the water-sensitive polymer to the at least one additional polymer is from about 60:40 to about 90:10.
16. The nonwoven fabric of Claim 15, wherein the weight ratio of the water-sensitive polymer to the at least one additional polymer is from about 70:30 to about 80:20.
17. The nonwoven fabric of Claim 13, wherein a portion of the multicomponent fibers are sheath/core fibers, wherein the water-sensitive polymer and the at least one additional polymer are present in the sheath of the multicomponent fibers.
18. The nonwoven fabric of Claim 17, wherein the core comprises a polymeric material having a melting temperature about 20°C or greater than the melting temperature of the sheath.
19. The nonwoven fabric of Claim 13, wherein the polylactide comprises a linear polylactide, a branched polylactide, a copolymer of optical isomers of lactide, a copolymer of lactide and caprolactone, or a blend thereof.
20. The nonwoven fabric of Claim 13, wherein the one or more polar groups comprise malefic anhydride, polyethylene glycol, polyethylene glycol methacrylate, hydroxyethyl methacrylate, 2-ethylhexyl methacrylate, vinyl alcohol, vinyl acetate, or combinations thereof.
21. The nonwoven fabric of Claim 13, wherein the second aliphatic polyester comprises polybutylene succinate, polybutylene succinate-co-adipate, polycaprolactone, or a blend thereof.
22. The nonwoven fabric of Claim 13, wherein the fabric comprises one or more fibers in addition to the multicomponent fibers, wherein at least the multicomponent fibers are binder fibers for the nonwoven fabric.
23. The nonwoven fabric of Claim 22, wherein the nonwoven fabric is an air-laid nonwoven fabric.
24. A personal care product comprising the fabric of Claim 23.
25. The personal care product of Claim 24, wherein the personal care product is selected from the group consisting of a sanitary napkin, a diaper, an incontinence device, a training pant and a wipe.
CA 2304155 1997-10-03 1998-09-30 Water-sensitive compositions Abandoned CA2304155A1 (en)

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US08/943,755 US5976694A (en) 1997-10-03 1997-10-03 Water-sensitive compositions for improved processability
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Families Citing this family (91)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6579814B1 (en) * 1994-12-30 2003-06-17 3M Innovative Properties Company Dispersible compositions and articles of sheath-core microfibers and method of disposal for such compositions and articles
US5976694A (en) * 1997-10-03 1999-11-02 Kimberly-Clark Worldwide, Inc. Water-sensitive compositions for improved processability
US6127593A (en) 1997-11-25 2000-10-03 The Procter & Gamble Company Flushable fibrous structures
US6623853B2 (en) 1998-08-28 2003-09-23 Wellman, Inc. Polyethylene glycol modified polyester fibers and method for making the same
US6582817B2 (en) 1999-11-19 2003-06-24 Wellman, Inc. Nonwoven fabrics formed from polyethylene glycol modified polyester fibers and method for making the same
US6579570B1 (en) 2000-05-04 2003-06-17 Kimberly-Clark Worldwide, Inc. Ion-sensitive, water-dispersible polymers, a method of making same and items using same
US6713414B1 (en) 2000-05-04 2004-03-30 Kimberly-Clark Worldwide, Inc. Ion-sensitive, water-dispersible polymers, a method of making same and items using same
US6423804B1 (en) 1998-12-31 2002-07-23 Kimberly-Clark Worldwide, Inc. Ion-sensitive hard water dispersible polymers and applications therefor
US6441267B1 (en) * 1999-04-05 2002-08-27 Fiber Innovation Technology Heat bondable biodegradable fiber
US6509092B1 (en) * 1999-04-05 2003-01-21 Fiber Innovation Technology Heat bondable biodegradable fibers with enhanced adhesion
US6509091B2 (en) 1999-11-19 2003-01-21 Wellman, Inc. Polyethylene glycol modified polyester fibers
US6171685B1 (en) 1999-11-26 2001-01-09 Eastman Chemical Company Water-dispersible films and fibers based on sulfopolyesters
US6218009B1 (en) * 1999-11-30 2001-04-17 Kimberly-Clark Worldwide, Inc. Hydrophilic binder fibers
US6177193B1 (en) * 1999-11-30 2001-01-23 Kimberly-Clark Worldwide, Inc. Biodegradable hydrophilic binder fibers
US6583075B1 (en) 1999-12-08 2003-06-24 Fiber Innovation Technology, Inc. Dissociable multicomponent fibers containing a polyacrylonitrile polymer component
AU2262301A (en) * 1999-12-29 2001-07-09 Kimberly-Clark Worldwide, Inc. Biodegradable nonwoven webs for fluid management
US6670521B2 (en) 2000-04-20 2003-12-30 The Procter & Gamble Company Dispersible absorbent products and methods of manufacture and use
KR100760080B1 (en) * 2000-05-04 2007-09-18 킴벌리-클라크 월드와이드, 인크. Ion-Sensitive, Water-Dispersible Polymers, A Method of Making Same And Items Using Same
US6444214B1 (en) 2000-05-04 2002-09-03 Kimberly-Clark Worldwide, Inc. Ion-sensitive, water-dispersible polymers, a method of making same and items using same
US6599848B1 (en) 2000-05-04 2003-07-29 Kimberly-Clark Worldwide, Inc. Ion-sensitive, water-dispersible polymers, a method of making same and items using same
US6683143B1 (en) 2000-05-04 2004-01-27 Kimberly Clark Worldwide, Inc. Ion-sensitive, water-dispersible polymers, a method of making same and items using same
US6548592B1 (en) 2000-05-04 2003-04-15 Kimberly-Clark Worldwide, Inc. Ion-sensitive, water-dispersible polymers, a method of making same and items using same
US6835678B2 (en) 2000-05-04 2004-12-28 Kimberly-Clark Worldwide, Inc. Ion sensitive, water-dispersible fabrics, a method of making same and items using same
US6429261B1 (en) 2000-05-04 2002-08-06 Kimberly-Clark Worldwide, Inc. Ion-sensitive, water-dispersible polymers, a method of making same and items using same
US6537663B1 (en) 2000-05-04 2003-03-25 Kimberly-Clark Worldwide, Inc. Ion-sensitive hard water dispersible polymers and applications therefor
US6815502B1 (en) 2000-05-04 2004-11-09 Kimberly-Clark Worldwide, Inc. Ion-sensitive, water-dispersable polymers, a method of making same and items using same
US6653406B1 (en) 2000-05-04 2003-11-25 Kimberly Clark Worldwide, Inc. Ion-sensitive, water-dispersible polymers, a method of making same and items using same
EP1320458B2 (en) * 2000-09-15 2016-03-02 Suominen Corporation Disposable nonwoven wiping fabric and method of production
ATE357262T1 (en) * 2000-11-13 2007-04-15 Procter & Gamble FLUSHABLE ABSORBENT ARTICLES, THEIR PRODUCTION AND USE
WO2002051284A2 (en) * 2000-12-26 2002-07-04 Avon Products, Inc. Applicator brushes and method for using same
US6586529B2 (en) 2001-02-01 2003-07-01 Kimberly-Clark Worldwide, Inc. Water-dispersible polymers, a method of making same and items using same
US6475618B1 (en) 2001-03-21 2002-11-05 Kimberly-Clark Worldwide, Inc. Compositions for enhanced thermal bonding
US6828014B2 (en) 2001-03-22 2004-12-07 Kimberly-Clark Worldwide, Inc. Water-dispersible, cationic polymers, a method of making same and items using same
US20030008591A1 (en) * 2001-06-18 2003-01-09 Parsons John C. Water dispersible, salt sensitive nonwoven materials
US6713140B2 (en) 2001-12-21 2004-03-30 Kimberly-Clark Worldwide, Inc. Latently dispersible barrier composite material
US6783826B2 (en) * 2001-12-21 2004-08-31 Kimberly-Clark Worldwide, Inc. Flushable commode liner
US7135135B2 (en) * 2002-04-11 2006-11-14 H.B. Fuller Licensing & Financing, Inc. Superabsorbent water sensitive multilayer construction
US7772138B2 (en) 2002-05-21 2010-08-10 Kimberly-Clark Worldwide, Inc. Ion sensitive, water-dispersible polymers, a method of making same and items using same
US6994865B2 (en) 2002-09-20 2006-02-07 Kimberly-Clark Worldwide, Inc. Ion triggerable, cationic polymers, a method of making same and items using same
US6960371B2 (en) 2002-09-20 2005-11-01 Kimberly-Clark Worldwide, Inc. Water-dispersible, cationic polymers, a method of making same and items using same
US7101456B2 (en) 2002-09-20 2006-09-05 Kimberly-Clark Worldwide, Inc. Ion triggerable, cationic polymers, a method of making same and items using same
US7141519B2 (en) 2002-09-20 2006-11-28 Kimberly-Clark Worldwide, Inc. Ion triggerable, cationic polymers, a method of making same and items using same
US7157389B2 (en) 2002-09-20 2007-01-02 Kimberly-Clark Worldwide, Inc. Ion triggerable, cationic polymers, a method of making same and items using same
US7994078B2 (en) * 2002-12-23 2011-08-09 Kimberly-Clark Worldwide, Inc. High strength nonwoven web from a biodegradable aliphatic polyester
US7700500B2 (en) * 2002-12-23 2010-04-20 Kimberly-Clark Worldwide, Inc. Durable hydrophilic treatment for a biodegradable polymeric substrate
US20040126585A1 (en) * 2002-12-27 2004-07-01 Kerins John E. Water dispersible commode/bedpan liner
US8513147B2 (en) 2003-06-19 2013-08-20 Eastman Chemical Company Nonwovens produced from multicomponent fibers
US20040260034A1 (en) 2003-06-19 2004-12-23 Haile William Alston Water-dispersible fibers and fibrous articles
US7892993B2 (en) 2003-06-19 2011-02-22 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US7687143B2 (en) 2003-06-19 2010-03-30 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US7951440B2 (en) * 2003-09-26 2011-05-31 The Procter & Gamble Company Dispensing paper-roll core systems
US7285520B2 (en) * 2003-12-01 2007-10-23 Kimberly-Clark Worldwide, Inc. Water disintegratable cleansing wipes
US8217219B2 (en) 2003-12-29 2012-07-10 Kimberly-Clark Worldwide, Inc. Anatomically conforming vaginal insert
US7297226B2 (en) 2004-02-11 2007-11-20 Georgia-Pacific Consumer Products Lp Apparatus and method for degrading a web in the machine direction while preserving cross-machine direction strength
US7285504B2 (en) 2004-04-23 2007-10-23 Air Products Polymers, L.P. Wet tensile strength of nonwoven webs
US20070048474A1 (en) * 2004-09-23 2007-03-01 The Procter & Gamble Company Dispensing paper-roll core systems
DE102005007148B4 (en) * 2005-02-11 2008-05-15 Universität Rostock Method and array for replicating and analyzing nucleic acids
DE102005029597A1 (en) * 2005-06-15 2006-12-28 Kelheim Fibres Gmbh Water-dissolvable or decomposable fiber and / or polymer material
US7592049B2 (en) * 2005-07-14 2009-09-22 Wacker Chemical Corporation Dry chemically bound nonwovens which are flushable and dispersible
DK176224B1 (en) * 2005-12-08 2007-03-05 Global Papir As Disposable ostomy irrigation sleeve has first end with primary aperture for receipt of emptiable material and secondary opposite end with further aperture for emptying material into toilet after conduct through sleeve
US20080076313A1 (en) * 2006-09-26 2008-03-27 David Uitenbroek Wipe and methods for manufacturing and using a wipe
US20080076314A1 (en) * 2006-09-26 2008-03-27 John James Blanz Wipe and methods for manufacturing and using a wipe
US8592641B2 (en) 2006-12-15 2013-11-26 Kimberly-Clark Worldwide, Inc. Water-sensitive biodegradable film
US8329977B2 (en) 2007-08-22 2012-12-11 Kimberly-Clark Worldwide, Inc. Biodegradable water-sensitive films
CN102105625B (en) * 2008-06-12 2015-07-08 3M创新有限公司 Melt blown fine fibers and methods of manufacture
WO2009152345A1 (en) 2008-06-12 2009-12-17 3M Innovative Properties Company Biocompatible hydrophilic compositions
MX347301B (en) 2009-03-31 2017-04-21 3M Innovative Properties Co Dimensionally stable nonwoven fibrous webs and methods of making and using the same.
US8512519B2 (en) 2009-04-24 2013-08-20 Eastman Chemical Company Sulfopolyesters for paper strength and process
WO2011075619A1 (en) 2009-12-17 2011-06-23 3M Innovative Properties Company Dimensionally stable nonwoven fibrous webs, melt blown fine fibers, and methods of making and using the same
WO2011084670A1 (en) * 2009-12-17 2011-07-14 3M Innovative Properties Company Dimensionally stable nonwoven fibrous webs and methods of making and using the same
TW201221714A (en) 2010-10-14 2012-06-01 3M Innovative Properties Co Dimensionally stable nonwoven fibrous webs and methods of making and using the same
US20120183861A1 (en) 2010-10-21 2012-07-19 Eastman Chemical Company Sulfopolyester binders
US8907155B2 (en) 2010-11-19 2014-12-09 Kimberly-Clark Worldwide, Inc. Biodegradable and flushable multi-layered film
CA2819862A1 (en) 2010-12-10 2012-06-14 H.B. Fuller Company Flushable article including polyurethane binder and method of using the same
GB201112402D0 (en) * 2011-07-19 2011-08-31 British American Tobacco Co Cellulose acetate compositions
US9327438B2 (en) 2011-12-20 2016-05-03 Kimberly-Clark Worldwide, Inc. Method for forming a thermoplastic composition that contains a plasticized starch polymer
US9718258B2 (en) 2011-12-20 2017-08-01 Kimberly-Clark Worldwide, Inc. Multi-layered film containing a biopolymer
US8906200B2 (en) 2012-01-31 2014-12-09 Eastman Chemical Company Processes to produce short cut microfibers
US9303357B2 (en) 2013-04-19 2016-04-05 Eastman Chemical Company Paper and nonwoven articles comprising synthetic microfiber binders
DE102013210997B4 (en) 2013-06-13 2022-09-08 BSH Hausgeräte GmbH Household appliance with an inner surface at least partially coated with a polymer mixture and method for its operation
IL227606A0 (en) 2013-07-22 2013-09-30 Albaad Massuot Yitzhak Ltd Binder for flushable nonwoven fabric
US9528210B2 (en) 2013-10-31 2016-12-27 Kimberly-Clark Worldwide, Inc. Method of making a dispersible moist wipe
US10113254B2 (en) 2013-10-31 2018-10-30 Kimberly-Clark Worldwide, Inc. Dispersible moist wipe
US9605126B2 (en) 2013-12-17 2017-03-28 Eastman Chemical Company Ultrafiltration process for the recovery of concentrated sulfopolyester dispersion
US9598802B2 (en) 2013-12-17 2017-03-21 Eastman Chemical Company Ultrafiltration process for producing a sulfopolyester concentrate
ES2703210T3 (en) 2013-12-31 2019-03-07 Johnson & Johnson Consumer Inc One-step process for the formation of a product in the form of multi-layer film, product and apparatus
CN105873574B (en) 2013-12-31 2020-11-24 强生消费者公司 Method for forming multilayer formed film
WO2015103033A1 (en) 2013-12-31 2015-07-09 Johnson & Johnson Consumer Companies, Inc. Process for forming a shaped film product
US9005395B1 (en) 2014-01-31 2015-04-14 Kimberly-Clark Worldwide, Inc. Dispersible hydroentangled basesheet with triggerable binder
PL2985375T3 (en) 2014-08-12 2017-11-30 Glatfelter Gernsbach Gmbh Dispersible non-woven fabric and method for producing the same
EP4053312A1 (en) 2019-10-28 2022-09-07 Kao Corporation Method for manufacturing fiber deposition body, method for manufacturing film, and method for attaching film

Family Cites Families (192)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2265913A (en) 1933-07-17 1941-12-09 Lilienfeld Patents Inc Hydroxy alkyl-alkyl ethers of cellulose
US2306451A (en) 1935-03-29 1942-12-29 Lilienfeld Patents Inc Cellulose derivatives
US2831852A (en) 1954-05-27 1958-04-22 Dow Chemical Co Water-soluble thermoplastic cellulose ethers
USRE25880E (en) 1958-03-26 1965-10-12 Ethoxyline besin emulsions
DE1806165U (en) 1959-12-17 1960-02-18 Baer Elektrowerke G M B H ELECTRIC PUSH-BUTTON SWITCH, ESPECIALLY FOR FOOT CONTROL.
US3177270A (en) 1960-10-10 1965-04-06 Dow Chemical Co Graft copolymers of polyolefins and monovinyl aromatic compounds and method of making the same
FR1317598A (en) 1961-03-13 1963-05-08
US3323978A (en) 1963-05-09 1967-06-06 Phillips Petroleum Co Artificial textile fibres and their production
DE1468048B2 (en) 1964-11-28 1975-02-20 Henkel & Cie Gmbh, 4000 Duesseldorf Process for the production of hydroxypropyl methyl celluloses
US3406688A (en) 1965-05-21 1968-10-22 Colgate Palmolive Co Diaper with paper face
US3388082A (en) 1965-11-01 1968-06-11 Dow Chemical Co Novel hydroxypropyl methyl cellulose ethers, a process for preparing the same, and compositions utilizing such ethers
US3670731A (en) * 1966-05-20 1972-06-20 Johnson & Johnson Absorbent product containing a hydrocolloidal composition
US4084033A (en) 1967-02-24 1978-04-11 Johnson & Johnson Bonded nonwoven fabrics
US3539666A (en) 1968-06-18 1970-11-10 Grace W R & Co Method for preparing a nonwoven fabriclike member
BE754115A (en) 1968-07-08 1971-01-29 Dow Chemical Co ALKYLENE OXIDE COPOLYMERS THAT MAY BE USED IN THE MANUFACTURE OF ELASTOMERIC ARTICLES
US3563241A (en) * 1968-11-14 1971-02-16 Du Pont Water-dispersible nonwoven fabric
GB1324781A (en) 1969-06-09 1973-07-25 Union Carbide Corp Polymer blends and their uses in the production of ultra fine fibres
US3717541A (en) 1970-06-30 1973-02-20 Grace W R & Co Non-woven fabric-like member
US3676529A (en) 1970-07-24 1972-07-11 Goodyear Tire & Rubber Curable graft polymers of polyalkylene oxides
US3954928A (en) 1970-07-28 1976-05-04 Teijin Ltd. Process for making sheet-formed reticulated fibrous structures
US3666737A (en) 1970-08-06 1972-05-30 Goodyear Tire & Rubber Method and process of preparing improved polyethers
US3763277A (en) 1971-07-01 1973-10-02 Union Carbide Corp Process for the preparation of inter-polymers of poly(ethylene oxide)
US3734876A (en) 1971-07-06 1973-05-22 Union Carbide Corp Cross-linked polyalkylene oxide
BE789277A (en) 1971-09-27 1973-03-26 Union Carbide Corp COMPOSITION OF ETHYLENE POLYMER DEGRADABLE UNDER THE ACTION OF WEATHER
US5480928A (en) 1971-12-01 1996-01-02 Union Carbide Chemicals & Plastics Technology Corporation Preparation of stable dispersions of ethylene oxide polymers
US3953655A (en) 1972-04-03 1976-04-27 Exxon Research And Engineering Company Polymers with improved properties and process therefor
US3868433A (en) 1972-04-03 1975-02-25 Exxon Research Engineering Co Thermoplastic adhesive compositions
US3830888A (en) 1972-04-03 1974-08-20 Exxon Research Engineering Co Compositions comprising a blend of a vinyl resin and grafted olefin polymer
US3709876A (en) 1972-04-10 1973-01-09 Dow Chemical Co Water soluble hydroxyethyl methyl cellulose ether thickener for latex paint
US3862266A (en) 1972-06-01 1975-01-21 Eastman Kodak Co Polypropylene/acrylic acid graft copolymers
USRE28957E (en) 1972-06-07 1976-09-07 Johnson & Johnson Synthetic resin compositions and methods of utilizing the same
US3867324A (en) 1972-07-28 1975-02-18 Union Carbide Corp Environmentally degradable-biodegradable blend of an oxyalkanoyl polymer and an environmentally degradable ethylene polymer
US4029720A (en) 1972-08-10 1977-06-14 Badische Anilin- & Soda-Fabrik Aktiengesellschaft Block or graft copolymers of polyalkylene oxides and vinylaromatic or diene polymers
DE2252508A1 (en) 1972-10-26 1974-05-09 Basf Ag GROP COPOLYMERISATE BASED ON METHYL METHACRYLATE POLYMERISATE
ZA74238B (en) 1973-01-15 1975-08-27 Johnson & Johnson Body fluid barrier films
US3804092A (en) 1973-01-15 1974-04-16 Johnson & Johnson Water dispersible nonwoven fabric
US3839319A (en) 1973-01-26 1974-10-01 Dow Chemical Co Hydroxypropyl methylcellulose ethers and method of preparation
US3843589A (en) 1973-02-05 1974-10-22 Union Carbide Corp Stable pumpable slurries of ethylene oxide polymers
SE403782B (en) 1973-03-14 1978-09-04 Mo Och Domsjoe Ab NONJONIC CELLULOSEETERS
US3993551A (en) 1973-09-10 1976-11-23 Union Carbide Corporation Process for cocrosslinking water soluble polymers and products thereof
US3957605A (en) 1973-09-10 1976-05-18 Union Carbide Corporation Process for radiation cocrosslinking water soluble polymers and products thereof
US4005251A (en) 1974-01-07 1977-01-25 Johnson & Johnson Process for preparation of alkali cellulose ester sulfates
US3897782A (en) 1974-01-07 1975-08-05 Johnson & Johnson Body fluid barrier films
US3939836A (en) 1974-02-07 1976-02-24 Johnson & Johnson Water dispersible nonwoven fabric
US3891584A (en) 1974-02-22 1975-06-24 Nat Starch Chem Corp Water-dispersible hot melt adhesives and products using same
NL156425B (en) 1974-04-18 1978-04-17 Kureha Chemical Ind Co Ltd PROCESS FOR THE PREPARATION OF ENTCOPOLYMERS AND FORMED PRODUCTS, WHOLE OR PARTLY CONSISTING OF AN ENTCOPOLYMER, PREPARED IN ACCORDANCE WITH THIS PROCESS.
FR2278348A2 (en) * 1974-06-28 1976-02-13 Rhone Poulenc Ind BIORESORBABLE SURGICAL ARTICLES
US4035540A (en) 1974-09-12 1977-07-12 Johnson & Johnson Non-woven fabrics bonded with pH sensitive film-forming silane crosslinked acrylate interpolymers
US4018729A (en) 1974-10-01 1977-04-19 Union Carbide Corporation Shaped article for conditioning hair a blend of water-soluble and water-insoluble polymers with interpenetrating networks
US3963805A (en) 1974-10-30 1976-06-15 Union Carbide Corporation Water swellable poly(alkylene oxide)
US3972961A (en) 1974-11-13 1976-08-03 E. I. Du Pont De Nemours And Company Process for the preparation of graft copolymers
US4073777A (en) 1975-01-17 1978-02-14 Eastman Kodak Company Radiation crosslinkable polyester and polyesteramide compositions containing sulfonate groups in the form of a metallic salt and unsaturated groups
JPS5193590A (en) 1975-02-14 1976-08-17
US4002171A (en) * 1975-03-17 1977-01-11 Personal Products Company Water-dispersible ionic polyurethane binder for nonwoven fabrics
DE2513251C3 (en) 1975-03-26 1978-09-07 Bayer Ag, 5090 Leverkusen Process for the production of bifilar acrylic fibers
US4225650A (en) 1975-10-22 1980-09-30 Exxon Research & Engineering Co. Crosslinkable polymer powder and laminate
FR2336422A1 (en) 1975-12-23 1977-07-22 Ato Chimie PROCESS FOR CHEMICAL MODIFICATION OF POLYOLEFINS WITH A VIEW TO IMPROVING THEIR WETABILITY
US4117187A (en) 1976-12-29 1978-09-26 American Can Company Premoistened flushable wiper
DE2734105C2 (en) 1977-07-28 1985-06-05 Bayer Ag, 5090 Leverkusen Continuous process for the production of graft polymers and device for this
US4258849A (en) 1978-01-18 1981-03-31 Air Products And Chemicals, Inc. Flushable towelette
US4343403A (en) 1978-01-18 1982-08-10 Air Products And Chemicals, Inc. Polyvinyl acetate latex impregnated towelette
US4245744A (en) 1978-01-18 1981-01-20 Air Products And Chemicals, Inc. Polyvinyl acetate latex impregnated towelette
US4372447A (en) 1978-01-18 1983-02-08 Air Products And Chemicals, Inc. Flushable towelette
US4200704A (en) 1978-09-28 1980-04-29 Union Carbide Corporation Controlled degradation of poly(ethylene oxide)
US4528334A (en) 1978-11-24 1985-07-09 Union Carbide Corporation Carboxylated poly(oxyalkylenes)
US4381335A (en) * 1979-11-05 1983-04-26 Toray Industries, Inc. Multi-component composite filament
JPS592462B2 (en) 1980-02-22 1984-01-18 呉羽化学工業株式会社 Antistatic resin composition
US4496619A (en) * 1981-04-01 1985-01-29 Toray Industries, Inc. Fabric composed of bundles of superfine filaments
US4511687A (en) 1981-06-03 1985-04-16 Daicel Chemical Industries, Ltd. Polycaprolactone composition
DE3277458D1 (en) 1981-11-05 1987-11-19 Takeo Saegusa Polymer compositions
US4419403A (en) 1981-12-07 1983-12-06 Scott Paper Company Water dispersible premoistened wiper
US4491645A (en) 1982-05-03 1985-01-01 Henkel Corporation Leather treatment composition
US4594389A (en) 1982-09-13 1986-06-10 The Goodyear Tire & Rubber Company Blends of higher α- olefin polymers and 1,2-epoxide polymers
US4617235A (en) 1983-05-23 1986-10-14 Unitika Ltd. Antistatic synthetic fibers
JPS6021966A (en) * 1983-07-12 1985-02-04 カネボウ株式会社 Production of polishing fiber
US4795668A (en) * 1983-10-11 1989-01-03 Minnesota Mining And Manufacturing Company Bicomponent fibers and webs made therefrom
US4883699A (en) 1984-09-21 1989-11-28 Menlo Care, Inc. Polymeric article having high tensile energy to break when hydrated
SE444950B (en) 1984-09-28 1986-05-20 Ytkemiska Inst COVERED ARTICLE, PROCEDURES AND METHODS OF PRODUCING THEREOF AND USING THEREOF
US4725492A (en) 1984-11-19 1988-02-16 Mitsubishi Petrochemical Co., Ltd. Composite heat-insulating material
CA1261188A (en) 1984-11-30 1989-09-26 Mitsui Petrochemical Industries, Ltd. Heat-fixable electrophotographic toner composition
US4624051A (en) 1984-12-07 1986-11-25 The Gillette Company Shaving unit
US4868222A (en) 1985-06-10 1989-09-19 The Dow Chemical Company Preparation of asymmetric membranes by the solvent extraction of polymer components from polymer blends
US4619988A (en) 1985-06-26 1986-10-28 Allied Corporation High strength and high tensile modulus fibers or poly(ethylene oxide)
US4705525A (en) 1985-06-28 1987-11-10 Ciba-Geigy Corporation Water-soluble or water-dispersible graft polymers, process for their preparation and the use thereof
US4894118A (en) 1985-07-15 1990-01-16 Kimberly-Clark Corporation Recreped absorbent products and method of manufacture
US4705526A (en) 1985-07-18 1987-11-10 Ciba-Geigy Corporation Water-soluble or water-dispersible graft polymers and the preparation and use thereof
US4855132A (en) 1986-02-25 1989-08-08 S R I International Method of preparing bioerodible polymers having pH sensitivity in the acid range and resulting product
US4702947A (en) 1986-04-01 1987-10-27 Pall Corporation Fibrous structure and method of manufacture
US4874540A (en) 1986-07-18 1989-10-17 Ecolab Inc. Graft copolymers of a polyether moiety on a polycarboxylate backbone
US4857602A (en) 1986-09-05 1989-08-15 American Cyanamid Company Bioabsorbable surgical suture coating
JPS6399943A (en) 1986-10-16 1988-05-02 三菱油化株式会社 Thermoplastic resin laminate
US4762738A (en) 1986-12-22 1988-08-09 E. R. Squibb & Sons, Inc. Means for disposal of articles by flushing and ostomy pouches particularly suited for such disposal
US4755421A (en) 1987-08-07 1988-07-05 James River Corporation Of Virginia Hydroentangled disintegratable fabric
US5162074A (en) * 1987-10-02 1992-11-10 Basf Corporation Method of making plural component fibers
US5216050A (en) 1988-08-08 1993-06-01 Biopak Technology, Ltd. Blends of polyactic acid
US5069970A (en) * 1989-01-23 1991-12-03 Allied-Signal Inc. Fibers and filters containing said fibers
JP2703971B2 (en) * 1989-01-27 1998-01-26 チッソ株式会社 Ultrafine composite fiber and its woven or nonwoven fabric
US5104923A (en) 1989-03-31 1992-04-14 Union Oil Company Of California Binders for imparting high wet strength to nonwovens
DE3910563A1 (en) 1989-04-01 1990-10-04 Cassella Ag HYDROPHILIC, SWELLABLE Graft Copolymers, THE PRODUCTION AND USE THEREOF
DE3911433A1 (en) 1989-04-07 1990-10-11 Cassella Ag HYDROPHILIC SWELLABLE GRAFT POLYMERISATES, THEIR PRODUCTION AND USE
JP2682130B2 (en) * 1989-04-25 1997-11-26 三井石油化学工業株式会社 Flexible long-fiber non-woven fabric
US5217495A (en) * 1989-05-10 1993-06-08 United States Surgical Corporation Synthetic semiabsorbable composite yarn
GB8913743D0 (en) 1989-06-15 1989-08-02 Bicc Plc Manufacture of extruded products
GB2235691A (en) 1989-09-04 1991-03-13 Du Pont Canada Concentrates of modifying agents in polymers
JP3162696B2 (en) 1989-09-06 2001-05-08 ライオン株式会社 Water-soluble, salt-sensitive polymer
US5360419A (en) 1989-12-08 1994-11-01 Kimberly-Clark Corporation Absorbent structure possessing improved integrity
US5057368A (en) * 1989-12-21 1991-10-15 Allied-Signal Filaments having trilobal or quadrilobal cross-sections
DE69033492T2 (en) 1990-01-09 2000-12-14 Dai Ichi Kogyo Seiyaku Co Ltd Process for the production of porous molded articles made of synthetic resin, of ultrafine fibers and of nonwovens with ultrafine fibers
US5407442A (en) * 1990-02-12 1995-04-18 Karapasha; Nancy Carbon-containing odor controlling compositions
US5264491A (en) 1990-03-22 1993-11-23 Edison Polymer Innovation Corporation Compatibilization of polymer blends
US5097004A (en) * 1990-05-11 1992-03-17 E. I. Du Pont De Nemours And Company Novel polyesters and their use in compostable products such as disposable diapers
US5097005A (en) * 1990-05-11 1992-03-17 E. I. Du Pont De Nemours And Company Novel copolyesters and their use in compostable products such as disposable diapers
US5219646A (en) * 1990-05-11 1993-06-15 E. I. Du Pont De Nemours And Company Polyester blends and their use in compostable products such as disposable diapers
US4970005A (en) 1990-06-01 1990-11-13 Arco Chemical Technology, Inc. Method for treatment of wastewater containing polyether polyols
DE4026719A1 (en) 1990-08-24 1992-02-27 Huels Chemische Werke Ag MELT FLUFFICALLY APPLICABLE PROTECTION MEASURES
CA2049271C (en) 1990-08-28 1998-05-05 Roger L. Juhl Transferable modifier containing film
US5095619A (en) 1990-09-28 1992-03-17 The Gillette Company Shaving system
DE69119688T2 (en) 1990-10-10 1997-01-16 Minnesota Mining & Mfg Graft copolymers and graft copolymer / protein compositions
CA2050021C (en) 1990-10-16 2002-07-02 Kimberly-Clark Worldwide, Inc. Environmentally friendly polymeric web compositions
JPH04198275A (en) 1990-11-26 1992-07-17 Nippon Petrochem Co Ltd Thermoplastic resin composition having good moldability
EP0503909A1 (en) 1991-03-14 1992-09-16 Chevron Research And Technology Company Substantially non-crosslinked maleic anhydride-modified ethylene polymers and process for preparing same
EP0503608A1 (en) 1991-03-14 1992-09-16 National Starch and Chemical Investment Holding Corporation Hot melt adhesive with wetness indicator
EP0507561B1 (en) 1991-04-04 1996-06-26 Nof Corporation Thermoplastic resin compositions
CA2065966A1 (en) 1991-04-23 1992-10-24 Robert J. Petcavich Disposable recyclable plastic articles and moldable synthetic resin blends for making the same
AU666592B2 (en) 1991-04-23 1996-02-15 Robert J. Petcavich Disposable degradable recyclable plastic articles and synthetic resin blends for making the same
US5217798A (en) 1991-05-07 1993-06-08 National Starch And Chemical Investment Holding Corporation Water sensitive hot melt adhesives for nonwoven applications
NZ242597A (en) 1991-05-14 1995-07-26 Grace W R & Co Co-extruded water soluble laminated polymeric film and methods of extruding it
DE4117749A1 (en) 1991-05-30 1992-12-03 Bayer Ag METHOD FOR PRODUCING MEDIUM MOLECULAR WEIGHT POLYETHYLENE OXIDE
DE69217063T2 (en) 1991-06-26 1997-05-15 Procter & Gamble SUCTIONABLE DISPOSABLE ITEM WITH BIODEGRADABLE PROTECTIVE FILM
US5260371A (en) 1991-07-23 1993-11-09 E. I. Du Pont De Nemours And Company Process for making melt stable ethylene vinyl alcohol polymer compositions
JP2911657B2 (en) * 1991-08-22 1999-06-23 株式会社クラレ High moisture-absorbing and water-absorbing ethylene-vinyl alcohol copolymer fiber and method for producing the same
US5444123A (en) 1991-09-06 1995-08-22 Basf Aktiengesellschaft Halogen-free flameproofed thermoplastic molding materials based on polyphenylene ethers and polystyrene
US5571878A (en) 1991-09-24 1996-11-05 Chevron Chemical Company Ethylene-alkyl acrylate copolymers and derivatives having improved melt-point temperatures and adhesive strength and processes for preparing same
AU2751592A (en) * 1991-10-01 1993-05-03 E.I. Du Pont De Nemours And Company Sulfonated polyesters and their use in compostable products such as disposable diapers
US5277976A (en) * 1991-10-07 1994-01-11 Minnesota Mining And Manufacturing Company Oriented profile fibers
US5424380A (en) 1991-10-31 1995-06-13 Tosoh Corporation Resin composition
JP3148307B2 (en) * 1991-11-07 2001-03-19 ライオン株式会社 Salt-sensitive polymer
DE4139613A1 (en) 1991-11-30 1993-06-03 Cassella Ag HYDROPHILIC SWELLABLE Graft Polymers
EP0555197A3 (en) 1992-01-29 1993-11-18 Monsanto Co Antistatic agent for thermoplastic polymers
DE69325401T2 (en) 1992-02-20 1999-11-25 Du Pont Water dispersions containing three-block polymer dispersants
US5352515A (en) 1992-03-02 1994-10-04 American Cyanamid Company Coating for tissue drag reduction
DE69304576T2 (en) 1992-03-25 1997-04-17 Showa Denko Kk Thermoplastic resin composition and color-coated molded article made therefrom
US5209849A (en) 1992-04-24 1993-05-11 Gelman Sciences Inc. Hydrophilic microporous polyolefin membrane
EP0569150B1 (en) * 1992-05-08 1998-01-07 Showa Highpolymer Co., Ltd. Polyester laminates
DE69317423T2 (en) 1992-06-26 1998-07-09 Procter & Gamble Biodegradable, liquid-impermeable multilayer film composition
CA2100419C (en) 1992-07-21 1997-02-04 Tadayuki Ohmae Graft copolymer, process for production thereof, and plasticizer comprising said copolymer as active component
US5369168A (en) 1992-08-03 1994-11-29 Air Products And Chemicals, Inc. Reactive melt extrusion grafting of thermoplastic polyvinyl alcohol/polyolefin blends
US5300192A (en) 1992-08-17 1994-04-05 Weyerhaeuser Company Wet laid fiber sheet manufacturing with reactivatable binders for binding particles to fibers
US5382400A (en) * 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same
US5382703A (en) 1992-11-06 1995-01-17 Kimberly-Clark Corporation Electron beam-graftable compound and product from its use
US5360586A (en) 1992-11-06 1994-11-01 Danny R. Wyatt Biodegradable cellulosic material and process for making such material
US5468259A (en) 1992-12-07 1995-11-21 Sheth; Paresh J. Dyeable polyolefin compositions and dyeing polyolefin compositions
CA2110448A1 (en) 1992-12-08 1994-06-09 Helen H.Y. Pak-Harvey Redispersible acrylic polymer powder for cementitious compositions
JP3159550B2 (en) 1992-12-10 2001-04-23 ライオン株式会社 Process for producing self-dispersing, salt-sensitive polymers
KR0120326B1 (en) * 1992-12-24 1997-10-22 김준웅 Thermoplastic biodegrable, and aliphatic polyester and method of making the same
JP3264719B2 (en) * 1993-01-12 2002-03-11 ユニチカ株式会社 Biodegradable composite long-fiber nonwoven fabric
US5384189A (en) 1993-01-27 1995-01-24 Lion Corporation Water-decomposable non-woven fabric
DE69320936T2 (en) 1993-01-29 1999-05-20 Lion Corp Fleece degradable in water
KR960015447B1 (en) 1993-03-16 1996-11-14 주식회사 삼양사 Biodegradable polymer
US5366804A (en) * 1993-03-31 1994-11-22 Basf Corporation Composite fiber and microfibers made therefrom
DE4312753A1 (en) 1993-04-20 1994-10-27 Basf Ag Use of polyacetals for the production of compostable moldings, as a coating agent and as an adhesive
US5522841A (en) 1993-05-27 1996-06-04 United States Surgical Corporation Absorbable block copolymers and surgical articles fabricated therefrom
AT403695B (en) 1993-07-26 1998-04-27 Danubia Petrochem Polymere Blends made from elastomeric polypropylenes and from nonolefinic thermoplastics
US5618911A (en) 1993-08-19 1997-04-08 Toyo Boseki Kabushiki Kaisha Polymer containing lactic acid as its constituting unit and method for producing the same
US5593778A (en) * 1993-09-09 1997-01-14 Kanebo, Ltd. Biodegradable copolyester, molded article produced therefrom and process for producing the molded article
US5395308A (en) 1993-09-24 1995-03-07 Kimberly-Clark Corporation Thermoplastic applicator exhibiting accelerated breakup when immersed in water
US5415905A (en) 1993-09-29 1995-05-16 Exxon Chemical Patents Inc. Dispersible film
ATE174389T1 (en) * 1993-10-15 1998-12-15 Kuraray Co WATER-SOLUBLE, HOT-FELTED BINDING FIBERS MADE OF POLYVINYL ALCOHOL, NON-WOVEN MATERIALS CONTAINING THESE FIBERS AND METHOD FOR PRODUCING SUCH FIBER AND THIS NON-WOVEN MATERIAL
US5356683A (en) 1993-10-28 1994-10-18 Rohm And Haas Company Expandable coating composition
CA2128483C (en) 1993-12-16 2006-12-12 Richard Swee-Chye Yeo Flushable compositions
KR970700743A (en) * 1993-12-29 1997-02-12 해리 제이. 그윈넬 WATER-DISPERSIBLE ADHESIVE COMPOSITION AND PROCESS
US5498785A (en) 1994-01-14 1996-03-12 Chevron Chemical Company Continuous process for the aminolysis of ethylene copolymers
ZA95627B (en) 1994-01-28 1995-10-05 Procter & Gamble Biodegradable copolymers and plastic articles comprising biodegradable copolymers
ID23491A (en) 1994-01-28 1995-09-07 Procter & Gamble COOPOLYMERS WHICH CAN BE DIODODEGRADED AND PLASTIC MATERIALS CONTAINED FROM CO-COLLIMERS WHICH CAN BE DIBIODEGRADED
US5500281A (en) 1994-02-23 1996-03-19 International Paper Company Absorbent, flushable, bio-degradable, medically-safe nonwoven fabric with PVA binding fibers, and process for making the same
KR0141431B1 (en) 1994-05-17 1998-07-01 김상웅 Biodegradable hydrogel copolymer
US5549791A (en) 1994-06-15 1996-08-27 The Procter & Gamble Company Individualized cellulosic fibers crosslinked with polyacrylic acid polymers
US5589545A (en) 1994-07-18 1996-12-31 Union Carbide Chemicals & Plastics Technology Corporation Lubricious polymer blends comprising polyethylene oxide, polyethylene and a polylactone
US5674578A (en) 1994-12-27 1997-10-07 Hollister Incorporated Water soluble/dispersible multilayered film of high interlayer adhesive strength and collection pouches formed therefrom
DE19500426C1 (en) 1995-01-10 1996-03-21 Leuna Werke Gmbh High-viscosity polypropylene (PP) graft copolymer prodn.
GB2295553B (en) 1995-02-09 1997-05-21 Ecoprogress Ltd A water dispersible bodily liquid absorbent composite
EP0735054B1 (en) 1995-03-27 2001-05-23 Mitsubishi Chemical Corporation Method of after treatment of modified polyolefins
UA28104C2 (en) * 1995-06-30 2000-10-16 Кімберлі-Кларк Уорлдвайд Інк. Multi-component fiber, non-woven material and articles made of that material
US5948710A (en) * 1995-06-30 1999-09-07 Kimberly-Clark Worldwide, Inc. Water-dispersible fibrous nonwoven coform composites
US5750605A (en) * 1995-08-31 1998-05-12 National Starch And Chemical Investment Holding Corporation Hot melt adhesives based on sulfonated polyesters
US5587434A (en) 1995-10-13 1996-12-24 Union Carbide Chemicals & Plastics Technology Corporation Process for polymer degradation
US6087550A (en) * 1995-11-09 2000-07-11 H. B. Fuller Licensing & Financing, Inc. Non-woven application for water dispersable copolyester
DE19619639A1 (en) 1996-05-15 1997-11-20 Basf Ag Recovery of fibers from bonded nonwovens
US5698322A (en) * 1996-12-02 1997-12-16 Kimberly-Clark Worldwide, Inc. Multicomponent fiber
US5770528A (en) 1996-12-31 1998-06-23 Kimberly-Clark Worldwide, Inc. Methylated hydroxypropylcellulose and temperature responsive products made therefrom
US5700872A (en) 1996-12-31 1997-12-23 Kimberly Clark Worlwide, Inc. Process for making blends of polyolefin and poly(ethylene oxide)
US5976694A (en) * 1997-10-03 1999-11-02 Kimberly-Clark Worldwide, Inc. Water-sensitive compositions for improved processability

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US6495080B1 (en) 2002-12-17
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US5976694A (en) 1999-11-02

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