WO2006040454A1

WO2006040454A1 - Product comprising a support and a covering, method for the preparation thereof and its use

Info

Publication number: WO2006040454A1
Application number: PCT/FR2005/002477
Authority: WO
Inventors: Marc Balastre; Daniel Joubert; Dominique Dupuis
Original assignee: Rhodia Chimie
Priority date: 2004-10-08
Filing date: 2005-10-07
Publication date: 2006-04-20
Also published as: FR2876315A1

Abstract

The invention relates to a product comprising a support and a covering over at least a portion of a surface of the support, characterized in that the covering contains: optionally, a film covering at least a portion of the support, said film optionally containing an agent for compatibilizing the film and at least a portion of a surface of the support, and optionally containing a wetting agent, and; a layer made of mineral material that covers at least a portion of the support and/or of the film.

Description

Product comprising a support and a coating, its preparation process and use

The present invention relates to a novel product comprising a coating.

The present invention also relates to a process for preparing such a product.

Coatings formed on supports are useful for modifying properties of said supports. One can for example seek to modify and / or modulate the hydrophilicity and / or permeability and / or the mechanical properties of a support. One can also seek to modify and / or modulate the affinity of a product towards an environment or a composition in which it is introduced. One can for example modify and / or modulate reactivity and / or adhesion and / or cohesion of a product in the environment or the composition. It is also possible to provide the product with anti-stain, anti-fouling properties, antistatic properties, easy cleaning properties, or to modify and / or modulate these properties. Such modifications and / or modulations and / or properties may be provided by a surface treatment, for example by coating a support product. There is a need for new treatments, or coatings, or for new products whose above properties are modified and / or modulated. The invention proposes a new product meeting this need. Thus the invention provides a product comprising a support and a coating on at least a portion of a surface of the support, characterized in that the coating comprises:

optionally, a film covering at least a portion of the support, the film optionally comprising a compatibilizer and / or adhesion agent for the film and at least a part of a surface of the support, and optionally a wetting agent, and

a layer of mineral material covering at least a portion of the support and / or the film _;

The invention also proposes a process for the preparation of such a product. Thus, the invention provides a method for preparing a product, characterized in that it comprises the following steps: a) optionally, exposing at least the surface portion of the support to a preparation treatment promoting a connection between the coating and at least the treated portion of the surface of the support, b) optionally, forming the film on at least a portion of a surface of the support, c) forming the layer of mineral material covering at least a portion of the film and / or the support.

The invention also relates to disposable absorbent products, for example diapers for babies, or other products for domestic hygiene or personal, comprising as one of its components, the product as mentioned above, or obtained using the method described above. The invention also relates to the use of the product described above or obtained by the above method, in disposable absorbent products, or for example in or for diapers for babies, or other products for domestic or personal hygiene. The product can for example also be used in or for wipes, for home care or for skincare, mops, filters, technical papers or for printing.

In particular, the invention makes it possible to modify and / or modulate properties of the support, or, in other words, to process it. According to an advantageous embodiment, the modification, modulation, treatment and / or coating are durable.

Definitions

By hydrophobic polymer is meant a polymer which lacks affinity for water. In the present application, a hydrophobic polymer is a polymer whose surface has an angle of contact (with water) of at least 70 °.

By durable bonding or hydrophilization or durable permeabilization or resistance to leaching, or sustainable treatment, or durable modification, or sustainable modulation, it is understood that a property in terms of bond (cohesion), hydrophilicity, or permeability, or other, is at less partially preserved after two soaking of the product for a few seconds (eg 5 seconds) in water or in a solution of sodium chloride. It is understood that a property is partially preserved if at least 50%, preferably 60%, preferably at least 70%, preferably at least 80%, preferably at least 90%, preferably at least 95% of the total. value of a measurement attributed to said property is retained after soaking, with respect to said value before soaking.

By "polymer" is meant any macromolecular compound, crosslinked or not. In the present application, the term "polymer" covers in particular the term "resin".

Support

According to one embodiment, the support is a non-fibrous support, in particular a domestic surface, a furnishing surface, a building surface and public works. The support may for example be based on a plastic material, a metal, a material with a hydraulic binder, for example a plaster, a cement, a concrete, a mortar, a ceramic-type material, or wood. The support may for example be hydrophobic, for example based on a hydrophobic polymer. According to another embodiment, the support is a fibrous support. The fibrous support may be a yarn, a fiber or a filament, a textile surface, woven or nonwoven, or a paper. The yarns, fibers or filaments may be fiber or filament yarns as such, not assembled on the textile surface. The textile surfaces may be woven or knitted surfaces, flocked or assembled textile surfaces (tufted surfaces) or nonwoven surfaces. The fibrous support, for example a nonwoven surface, may for example comprise a synthetic polymer, natural or derived from a natural polymer, for example a thermoplastic polymer, or a cellulosic polymer or cellulose derivative, in the form of yarns, fibers or filaments. Nonwoven surfaces include surfaces made by entanglement of preformed fibers, and optionally subsequent treatments of calendering, thermofusion, needling, etc. Nonwoven surfaces also include nonwoven surfaces obtained using high productivity processes, generally hot, "meltblown" or "spunbound" type. All these nonwoven surfaces and all these methods of preparation are known to those skilled in the art.

The polymer of the support is advantageously a hydrophobic polymer. As examples of hydrophobic polymers, mention may be made of:

polyolefins such as polyethylenes, polypropylenes, ethylene-propylene copolymers, polyisobutene, polyisoprene, polystyrenes, copolymers comprising styrene units,

the halogenated vinyl polymers such as PVC, PTFE, PVDF,

the hydrophobic vinyl polymers,

polyethylene terephthalates (PET).

It may also be a polymer which is not particularly hydrophobic, such as polyamide, for example polyamide 6 or 66, or cellulose, or cellulose derivatives.

The polymer of the fibrous support may advantageously be a thermoplastic polymer based on polypropylene or polyethylene terephthalate, cellulose or a derivative, or a mixture. The support may thus be a nonwoven comprising fibers based on polypropylene, polyethylene terephthalate, cellulose or a derivative, or a mixture of these fibers (for example a polypropylene fiber nonwoven or non-woven fiber of polypropylene fibers). Polypropylene and cellulose fibers or a derivative) .These media are particularly interesting for products (coated media) used in disposable absorbent products such as baby diapers, feminine hygiene products, comfort products for incontinence adult.

The polymer of the support may contain more or less significant amounts of additives, such as pigments, delustrants, antioxidants, stabilizers (especially heat stabilizers or light or UV stabilizers), dyes, free radical scavengers, catalyst residues, etc. Additives that may be present are known to those skilled in the art.

Supports that can be implemented are notably marketed by Feudenberg (brand VILMED®) or BBA Nonwovens (brands Celestra® or Veraspun®). The typical specific weights of these sails are for example 10 to 20 g per m ² .

It is mentioned that the support may be different from a support intended to be introduced into a living organism, in particular different from a dental or bone prosthesis. The support may also be different from a support for biomedical or food use.

Film The film, if present, is bonded to the support on at least a portion of a surface of the support. The film can include:

a film covering at least part of the support,

- Optionally, a compatibilizer and / or adhesion of the film and at least a portion of a surface of the support, and - optionally, a wetting agent.

The film may for example be a polymeric film. The film may be obtained from at least one film-forming agent (film-forming agent alone, or a combination of film-forming agents), for example a polymeric film-forming agent (polymer formed before application) or not (but capable of forming a polymer or a crosslinked resin after application). Details are given below.

The compatibilizing agents and / or adhesion agents may be agents intended to promote the binding of the film to the support, or agents intended to promote the adhesion of film-forming agents on the support. The use and choice of such agents may depend on the nature of the support, the coating process, and the nature of the film or film-forming agents. Such agents are known to those skilled in the art.

The wetting agents may be agents intended to promote the approach of film-forming agents or of a vector comprising film-forming agents on the support. The use and choice of such agents may depend on the nature of the support, the coating process, and the nature of the film or film-forming agents. Such agents are known to those skilled in the art. The film may be a polymer in the form of a film. The film may be obtained from at least one film-forming agent, polymeric or otherwise. It may be a film obtained from an aqueous dispersion of film-forming polymer that is insoluble in water (latex), for example a natural or synthetic latex. The water-insoluble film-forming polymers that are preferred can be obtained by polymerization of monomers chosen from:

vinyl esters and more particularly vinyl acetate;

alkyl acrylates and methacrylates in which the alkyl group contains from 1 to 10 carbon atoms, for example the methyl, ethyl, n-butyl and 2-ethylhexyl acrylates and methacrylates;

vinylaromatic monomers, in particular styrene.

These monomers may be copolymerized with one another or with other ethylenically unsaturated monomers, to form homopolymers, copolymers or terpolymers.

By way of nonlimiting examples of monomers copolymerizable with vinyl acetate and / or acrylic esters and / or styrene, mention may be made of ethylene and olefins such as isobutene; vinyl esters of saturated monocarboxylic acids branched or unbranched, having from 1 to 12 carbon atoms, such as vinyl propionate, the vinyl "Versatate" (registered trade mark for esters of acids branched Cg-C] - _|), pivalate, vinyl laurate; unsaturated mono- or di-carboxylic acid esters having 3 to 6 carbon atoms with alkanols having 1 to 10 carbon atoms, such as maleates, fumarates of methyl, ethyl, butyl, ethylhexyl; vinylaromatic monomers such as methylstyrenes, vinyltoluenes; vinyl halides such as vinyl chloride, vinylidene chloride, diolefins especially butadiene; the (meth) allylic esters of (meth) acrylic acid, the (meth) allylic esters of the mono and diesters of maleic, fumaric and itaconic acids, as well as the alkenic derivatives of the amides of acrylic and methacrylic acids, such as N -méthallylmaléimide.

In particular, at least 2 copolymerizable monomers of different natures can be chosen in order to obtain a terpolymer.

By way of example, mention may be made of a terpolymer of the acetate / versatate / dibutyl maleate type. The polymerization of the latex can be carried out in a manner known per se in aqueous emulsion polymerizable monomers in the presence of at least one radical initiator and preferably a transfer agent, for example of the mercaptan type with a concentration of monomers in the medium the reaction is generally between 20 and 60% by weight.

The polymerization can be carried out continuously, discontinuously or semi-continuously with introduction of a part of the monomers continuously and be of the "seeded" or "incremental" type according to any known variant for obtaining particles of homogeneous and heterogeneous structure . For the preparation of a latex, by way of non-limiting example, reference will be made to the procedures described in patent EP 599 676 in the name of the present applicant.

In a preferred manner, acrylic polymers are used for the film, that is to say which comprise polymers based on monomers of acrylic type (such as alkyl acrylates and methacrylates in which the alkyl group contains from 1 to 10 carbon atoms. carbon for example acrylates and methacrylates of methyl, ethyl, n-butyl, 2-ethylhexyl). These acrylic polymers may also comprise other monomers, it may be for example styrene-acrylic varnish. However, in the targeted applications, acrylic "pure" coating compositions, that is to say based on monomers of acrylic type only, are even more preferred.

The latexes used can be chosen such that their glass transition temperature (TG) is between 10 ° and 60 ^° C., and preferably between 20 ° and 40 ^° C. The sizes of the polymer particles in aqueous dispersion constituting the latexes according to the invention can be located between 300 nanometers and 20 nanometers. These particle sizes are measured by laser granulometry or by scanning microscopy after cryofracture of the sample.

Optionally, the aqueous dispersions of film-forming polymers may comprise plasticizers, in order to reduce the film formation temperature (TMMF) when the process of the invention is carried out under very cold temperature conditions, that is to say at temperatures below 0 ° C. Composition useful for forming the film

According to a practical embodiment, the film is obtained by applying a liquid composition, comprising in particular the ingredients of the film mentioned above, and a liquid vector (to be eliminated later to form a film). Thus, a composition useful for the implementation of the invention comprises:

at least one film-forming agent in a liquid vector, forming a film after elimination of the vector,

optionally, an agent for compatibilizing and / or adhering the film or film-forming agent and at least part of a surface of the support, optionally a wetting agent, other than the hydrophilic agent, and or permeabilizer.

The ingredients of the composition have been described above. The liquid vector may be an aqueous or non-aqueous vector (alcoholic, hydroxyalcoholic or other solvent), the polymer being in the form of a solution, dispersion or emulsion in this vector. Advantageously, the film-forming polymer in a liquid carrier is a polymer solubilized in an aqueous carrier or in a solvent, or an aqueous dispersion of film-forming polymer (latex). The nature of the vector, its amount, and any dilution may be determined by those skilled in the art.

Without wishing to be bound to any theory, it is believed that the film can provide a sufficiently large bond by simply coating fibers with the fibrous support.

The presence of the film on the support can contribute to an improvement of its mechanical properties. Thus, products whose support is a non-woven surface, for example comprising polypropylene and / or cellulose fibers may have superior mechanical properties. It is also possible to reduce the density (g / m ² ) of the nonwoven while retaining satisfactory mechanical properties. For example, it is possible to use nonwovens with a density of less than or equal to 17 g / m ² or even less than or equal to 15 g / m ² . Moreover, the presence of the film can reinforce the cohesion and / or the support and the layer of mineral material, in particular for hydrophobic supports, for example for fibrous, typically non-woven supports based on polypropylene fibers. Finally, the presence of the film can assist in the implementation of the mineral layer, in particular for hydrophobic substrates, for example for fibrous, typically non-woven supports based on polypropylene fibers. The film can notably help with the approach and the hanging of the species which will form the mineral layer or which will react to form the mineral layer, especially in an aqueous medium. This is particularly advantageous for hydrophobic substrates, for example for fibrous, typically non-woven supports based on polypropylene fibers, which tend to repel these species.

Layer of mineral matter

According to an interesting embodiment, the mineral material is hydrophilic. This embodiment is particularly suitable for modifying and / or modulating the hydrophilicity and / or the permeability of a fibrous or non-fibrous support, more particularly of a hydrophobic support, for example based on a hydrophobic polymer.

The layer of mineral material may be continuous or discontinuous, thus covering at least a portion of the support and / or the film. The thickness of the layer may advantageously be between 1 nm and 1000 μm, for example between 100 nm and 1 μm.

The mineral material may in particular be based on a calcium phosphate. Calcium phosphate is also understood to mean calcium pyrophosphate. Calcium phosphate may have an apatite structure. The structure can be observed by X-ray analysis. Among these apatitic compounds, the following compounds can be mentioned as examples: calcium phosphate hydroxyapatite, calcium phosphate monetite or calcium phosphate brushite or phosphate of calcium phosphate octocalcium. These apatitic calcium phosphate compounds may be partially substituted by magnesium or fluorine.

Product features

The coating, the mineral material layer, the film, at least a part of the surface of the support, optionally other coating ingredients, their amounts and the methods of preparation, are preferably selected so that the connection between and the support film is durable in the presence of an aqueous solution at a temperature between ⁰ C and 1 O 5O ⁰ C. one can speak as the case of durable or lasting treatment coating, or permanent connection, or durable hydrophilization or resistance to leaching, or permeable permeabilization, or durable anti-stain and / or anti-fouling properties.

The product is advantageously permeable to water (especially for a non-woven polypropylene and / or cellulose or derivative support), for products (coated supports) used in disposable absorbent products such as diapers, feminine hygiene, comfort products for adult incontinence, household hygiene products. In addition, the support, the coating, and their bonding are preferably such that the surface tension of an aqueous solution is not lowered by more than 50%, preferably by more than 40%, preferably by more than 30%, preferably more than 20%, preferably 10%, after contacting the product with the aqueous solution. Advantageously, the bond between the support and the film, if present, is durable in the presence of an aqueous solution at a temperature between 10 ⁰ C and 50 ⁰ C, and / or the bond between the film and the layer of mineral matter is durable in the presence of an aqueous solution at a temperature between 10 ⁰ C and 50 ° C.

Process

A suitable method for producing products according to the invention comprises the following steps: a) optionally, exposing at least the surface portion of the support to a preparation treatment promoting a bond between the coating and at least the treated portion of the surface of the support, b) optionally, forming the film on at least a portion of a surface of the support, c) forming the layer of mineral material covering at least a portion of the film and / or the support.

Advantageously, at least one of the steps a) or b) is implemented.

Step a) is an optional pre-treatment step. Such a step may aim to improve the affinity of the composition for at least the part of the support intended to be coated, and / or to improve the bond between the coating and at least the treated part of the surface of the support. This treatment can be a dry or wet treatment. Among the treatments in the dry process are for example corona type treatments, UV irradiation, plasma. Such surface treatments are known to those skilled in the art. Wet treatments include for example chemical treatments for example using chemical compounds modifying the chemical functions present on the surface of the support (oxidation, degradation, reductions ...)

Step b) may for example comprise the following steps: b1) applying on at least the part of the surface of the support a coating composition comprising: at least one film-forming agent in a liquid vector, forming a film after elimination of the vector , optionally, an agent for compatibilizing the film or film-forming agent and at least the part of the surface of the support,

- optionally, a wetting agent, other than the hydrophilic and / or permeabilizing agent, then b2) removing at least a portion of the vector to form a film.

If the film-forming agent used is a film-forming polymer, it may be a polymer solubilized in an aqueous vector or in a solvent, or an aqueous dispersion of film-forming polymer (latex).

Step b1) can be implemented by any method for applying a liquid composition to a support. Any impregnation, coating or coating technique may be used. For example, we can operate by:

spraying on at least a portion of a surface of the support, introducing at least a portion of a surface of the support into a bath of composition to form the film,

- Application of the composition using devices such as squeegees, brushes, rollers.

Industrial processes for applying suitable compositions are in particular known under the following names: "Kiss roll", "foaming".

The elimination step b2) can be carried out simply by evaporation, possibly accelerated by heating, or by any other means (air flow, infrared, etc.).

Step c) may in particular be carried out by placing in contact:

- the support,

an aqueous solution comprising a soluble calcium salt, preferably calcium chloride or calcium nitrate, and a solution comprising a soluble phosphate salt, preferably an alkali metal or ammonium salt.

According to an advantageous embodiment, step c) comprises the following steps: d) contacting the support with the aqueous solution comprising a soluble calcium salt, c2) optionally rinsing, c3) brought into contact with the solution comprising a soluble salt phosphate, c4) optionally rinsing. According to an advantageous embodiment, step c3) is carried out directly after step c2) or d), and / or no drying is carried out between steps c3) and d) or between steps c3) and c2). . Such a mode is particularly simple and inexpensive.

The contacting of the solution comprising a soluble phosphate salt is preferably carried out at a pH of at least 5, preferably at least 6, preferably at least 7, preferably at least 9.

In a particular embodiment of the process according to the invention, the apatitic calcium phosphate compound may be partially substituted by magnesium or fluorine. In this case, for example, a magnesium sulfate is added to the soluble calcium salt solution. It is also possible to add a fluorine salt, for example ammonium fluoride, to the solution of soluble phosphate salt (di-ammonium phosphate, for example).

Step c), or sub-steps d), c2), c3), c4) can be implemented in particular by any method for applying a liquid composition to a support. Any impregnation, coating or coating technique may be used. For example, we can operate by:

spraying on at least a part of a surface of the support,

- Introduction of at least a portion of a surface of the support in a bath, - application of the composition using devices such as squeegees, brushes, rollers.

According to a practical embodiment in the context of products whose support is a textile surface (for example a nonwoven surface that can be used in disposable absorbent products), the support is in motion during the implementation of the steps a) and / or b) and / or c). The support is for example in movement of a surface scroll: - unrolled and then wound (specific processing step),

- shaping (manufacture of the surface) then rolled up (treatment downstream of the manufacture of the textile surface),

- unrolled and then assembled to other elements after treatment, (treatment upstream of the assembly or construction of a product such as a disposable absorbent product) or

- shaping (manufacture of the surface), treated then assembled to other elements after treatment (integration of the upstream stages of manufacture of the textile surface and swallowing the assembly or construction of a product as a disposable absorbent product).

Products According to the Invention and Uses According to one embodiment, the product is a fiber that can be contained in carpets, or a carpet. The treatment can thus impart anti-stain and / or anti-fouling properties to carpets, the treatment being carried out on the fibers or on the carpet once assembled.

According to another embodiment of the invention, the support is a non-woven surface, for example a non-woven surface based on polypropylene or polyethylene terephthalate. The product according to the invention included in (or used in) a disposable absorbent product, preferably a diaper (diaper) for babies, a feminine hygiene product, or a comfort product for adult incontinence or other products for domestic or personal hygiene. Such products are known to those skilled in the art. They generally comprise an absorbent compound, in an envelope comprising a permeable inner layer intended to be in contact with the skin of the user, and an outer layer, generally impermeable. Furthermore, the absorbent may be contained in a core layer ("core cover"), permeable, separating said absorbent from the permeable inner layer, and also from the outer layer. The product according to the invention is preferably used as an inner layer in the construction of disposable absorbent products. It may especially be an absorption veil or a core layer, preferably a polypropylene-based nonwoven. It should be noted that the disposable absorbent product may comprise other elements known to those skilled in the art, for example elastics, distribution sails, etc.

As such, the product may be a semi-finished intermediate used for the construction or assembly of a disposable absorbent product, preferably a diaper (diaper) for babies, a feminine hygiene product, or a comfort product for adult incontinence. It can then be in the form of rolls, and be marketed by manufacturers of non-woven surfaces. The treatment is then preferably carried out downstream of the manufacture of nonwoven surfaces.

The product may also be a part of a disposable absorbent product, preferably a baby diaper, a feminine hygiene product, or a comfort product for adult incontinence, and marketed by food manufacturers. finished consumer products. The treatment will have been carried out as mentioned above, or continuously upstream of the manufacture of the finished articles (assembly or construction of layers), from rolls of untreated nonwoven surfaces, or in integrated processes of surface fabrication, processing, assembly.

Other details or advantages of the invention will become apparent from the following non-limiting example.

EXAMPLES

For the implementation of the examples, the following products are used:

The nonwoven is immersed in a solution of Latex 1 diluted 20 times with deionized water. Dry for one hour at 54 ° C. A nonwoven coated with a latex film is obtained. The nonwoven is placed in the CaCl ₂ solution for one hour at room temperature and then rinsed.

The nonwoven is then placed in the Na ₂ HPO ₄ solution for 15 minutes at room temperature and then rinsed.

It is observed with a scanning electron microscope that the nonwoven comprises on its surface a film of the latex, and a more or less homogeneous layer, more or less continuous, of mineral material on the film and / or the nonwoven.

In addition, the following tests are carried out: Test 1: Hydrophilic / qualitative permeability 5 ml of saline (10 g / l) is passed through a sample placed on 3 sheets of absorbent paper. The behavior of the water on the sample is visually observed.

Test 2: Hydrophilic / quantitative permeability inspired by the teachings of the standard

Edana ERT 150 (strike through). 5 ml of saline water (9 g / l) were repeatedly passed (5 times) on the same sample modified by the deposit. The average times of each passage are recorded to ensure the durability obtained.

Test 3: Surface tension of a leaching water according to the teachings of ASTM D1331. A surface of 60 cm / 60 cm of treated nonwoven is dipped in a volume of saline water equal to 40 ml and then removed. The measurement of the surface tension is then carried out.

It is observed by test 1 that the hydrophilicity and / or permeability is significantly improved compared to the nonwoven without the treatment.

It is observed by the test 2 that the hydrophilicity and / or permeability is improved compared to the nonwoven without the treatment, and that this property is durable.

NP: Not Permeable

It is observed by test 3 that the surface tension of a leaching water is not greatly lowered.

Claims

A product comprising a support and a coating on at least a part of a surface of the support, characterized in that the coating comprises: optionally, a film covering at least a part of the support, the film optionally comprising a compatibilizing agent and / or adhesion of the film and at least a portion of a surface of the support, and optionally a wetting agent, and

a layer of mineral material covering at least a portion of the support and / or the film.

2. Product according to the preceding claim, characterized in that the inorganic material is hydrophilic.

3. Product according to one of the preceding claims, characterized in that the mineral material is based on a calcium phosphate.

4. Product according to the preceding claim, characterized in that the calcium phosphate comprises calcium phosphate hydroxyapatite, calcium phosphate monetite, calcium phosphate brushite, or octocalcium phosphate.

5. Produced according to one of the preceding claims, characterized in that the mineral material is an apatitic calcium phosphate compound, optionally partially substituted by magnesium or fluorine.

6. Product according to one of the preceding claims, characterized in that the film is a polymer in the form of a film.

7. Product according to one of the preceding claims, characterized in that the polymer in film form is a water-insoluble polymer obtained by polymerization of monomers chosen from:

vinyl esters and more particularly vinyl acetate;

alkyl acrylates and methacrylates in which the alkyl group contains from 1 to 10 carbon atoms, for example the methyl, ethyl, n-butyl and 2-ethylhexyl acrylates and methacrylates; vinylaromatic monomers, in particular styrene; these monomers can be copolymerized with one another or with other ethylenically unsaturated monomers copolymerizable with vinyl acetate and / or esters acrylics and / or styrene, to form homopolymers, copolymers or terpolymers.

8. Product according to claim 7, characterized in that the monomers copolymerizable with vinyl acetate and / or acrylic esters and / or styrene, may be selected from ethylene and olefins such as isobutene; vinyl esters of saturated monocarboxylic acids branched or unbranched, having from 1 to 12 carbon atoms, such as vinyl propionate, the vinyl "Versatate" (registered trade mark for esters of acids branched Cg-C] - _|), pivalate, vinyl laurate; unsaturated mono- or di-carboxylic acid esters having 3 to 6 carbon atoms with alkanols having 1 to 10 carbon atoms, such as maleates, fumarates of methyl, ethyl, butyl, ethylhexyl; vinylaromatic monomers such as methylstyrenes, vinyltoluenes; vinyl halides such as vinyl chloride, vinylidene chloride, diolefins especially butadiene; the (meth) allylic esters of (meth) acrylic acid, the (meth) allylic esters of the mono and diesters of maleic, fumaric and itaconic acids, as well as the alkenic derivatives of the amides of acrylic and methacrylic acids, such as N -méthallylmaléimide.

9. Product obtained according to claim 8, characterized in that the water-insoluble polymer is obtained by polymerization of monomers chosen from alkyl acrylates and methacrylates in which the alkyl group contains from 1 to 10 carbon atoms, for example carbon atoms. methyl, ethyl, n-butyl, 2-ethylhexyl acrylates and methacrylates.

10. Product according to one of the preceding claims, characterized in that the support is a non-fibrous support.

11. Product according to the preceding claim, characterized in that the support is based on a plastic material, a metal, a material with a hydraulic binder, for example a plaster, a cement, a concrete, a mortar, of a ceramic material, or wood.

12. Product according to one of claims 1 to 9, characterized in that the support a fibrous support.

13. Product according to the preceding claim, characterized in that the fibrous support is a yarn, a fiber or a filament, a textile surface, woven or non-woven, or optionally flocked or tufted, or a paper.

14. Product according to one of claims 12 or 13, characterized in that the fibrous support comprises a synthetic polymer, a natural polymer, or a derivative of a natural polymer, in the form of fiber, yarn or filament.

15. Product according to the preceding claim, characterized in that the polymer support is thermoplastic polymer based on polypropylene or polyethylene terephthalate, cellulose or a derivative, or a mixture.

16. Product according to the preceding claim, characterized in that the support is a textile surface comprising yarns or fibers or filaments based on polypropylene, polyethylene terephthalate, cellulose or a derivative, or a mixture of these yarns, fibers or filaments.

17. Product according to one of claims 12 to 16, characterized in that the support is a nonwoven surface, preferably a polypropylene fiber nonwoven or a nonwoven cellulose fibers or a derivative.

18. Product according to one of claims 12 to 17, characterized in that it is permeable to water, and in that the support, the coating, and their connection are such that the surface tension of a aqueous solution is not lowered by more than 50% after contacting the product with the aqueous solution.

19. Product according to one of the preceding claims, characterized in that the bond between the support and the film is durable in the presence of an aqueous solution at a temperature between 10 ⁰ C and 50 ⁰ C, and / or in that the bond between the film and the layer of mineral material is durable in the presence of an aqueous solution at a temperature between 10 ° C and 50 ° C.

20. Product according to one of claims 11 to 18, included in a disposable absorbent product, preferably a layer (diaper) for babies, a feminine hygiene product, or a comfort product for adult incontinence.

21. A method for preparing a product according to one of the preceding claims, characterized in that it comprises the following steps: a) optionally, exposing at least the surface portion of the support to a preparation treatment promoting a connection between the coating and at least the treated part of the surface of the support, b) opiionnellement, form the film on at least a portion of a surface of the support, c) form the layer of mineral material covering at least a portion of the film and / or support.

22. Method according to claim 21, characterized in that at least one of the steps a) or b) is implemented.

23. Method according to one of claims 21 or 22, characterized in that step a) is a corona treatment step.

24. Method according to the preceding claim, characterized in that step b) comprises the following steps: b1) applying on at least the portion of the surface of the support a coating composition comprising: at least one film-forming agent in a vector liquid, forming a film after removal of the vector,

optionally, an agent for compatibilizing and / or adhering the film or film-forming agent and at least the part of the surface of the support,

25. Method according to one of claims 21 or 24, characterized in that step c) is carried out by placing in contact: - the support,

an aqueous solution comprising a soluble calcium salt, preferably calcium chloride or calcium nitrate, and

a solution comprising a soluble phosphate salt, preferably an alkali metal or ammonium salt.

26. Method according to the preceding claim, characterized in that step c) comprises the following steps: d) contacting the support with the aqueous solution comprising a soluble calcium salt, c2) optionally rinsing, c3) placed in contact with the solution comprising a soluble phosphate salt, c4) optionally rinsing.

27. Method according to one of claims 24 to 26, characterized in that the film-forming agent is a film-forming polymer.

28. Method according to the preceding claim, characterized in that the film-forming polymer is a polymer solubilized in an aqueous vector or in a solvent, or an aqueous dispersion of film-forming polymer (latex).

29. Use of the product according to one of claims 1 to 20 in absorbent disposable products, or absorbent disposable products.