WO1992003532A1 - Lavatory cleansing - Google Patents

Lavatory cleansing Download PDF

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Publication number
WO1992003532A1
WO1992003532A1 PCT/GB1991/001448 GB9101448W WO9203532A1 WO 1992003532 A1 WO1992003532 A1 WO 1992003532A1 GB 9101448 W GB9101448 W GB 9101448W WO 9203532 A1 WO9203532 A1 WO 9203532A1
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WO
WIPO (PCT)
Prior art keywords
weight
mixture
blocks
agents
water
Prior art date
Application number
PCT/GB1991/001448
Other languages
French (fr)
Inventor
Steven John Farrell Black
John Marshall
Brian Murie Wilson
Original Assignee
Jeyes Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jeyes Limited filed Critical Jeyes Limited
Priority to JP3514600A priority Critical patent/JPH06504298A/en
Priority to AU84993/91A priority patent/AU663850B2/en
Publication of WO1992003532A1 publication Critical patent/WO1992003532A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0056—Lavatory cleansing blocks
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds

Definitions

  • This invention is concerned with improvements in and relating to lavatory cleansing blocks.
  • the present invention is concerned with so-called "free standing" lavatory cleansing blocks which are immersed in the water cistern of a lavatory or urinal so that cleansing ingredients contained in the block are slowly dissolved in the water of the cistern.
  • the water from the cistern, containing dissolved cleansing ingredients is flushed into the lavatory bowl or urinal and serves to cleanse it.
  • lavatory cleansing blocks comprise two principal components, namely:
  • a surface active or detergent component comprising one or more surface active or detergent agents
  • freestanding lavatory cleansing blocks commonly contain one or more of inert fillers, water-softening agents (which may also serve to some extent as fillers), colouring agents (especially water-soluble dyestuffs, commonly of a blue or green colour), perfumes and germicides or preservatives.
  • lavatory cleansing blocks When first manufactured on a commercial scale, lavatory cleansing blocks were made by a "melt” process; that is the components for the block were melted
  • meltable materials and especially precludes the use, as surfactants, of anionic surfactants; well-known and readily available surfactant materials.
  • surfactants may be made by a compression process, e.g. a tabletting process or, especially, an extrusion
  • the present invention provides a process for the production of lavatory cleansing blocks by extruding a mixture of appropriate ingredients for the blocks into rod form and subsequently cutting the rod into blocks of the desired size, in which the mixture to be extruded comprises, based on the total weight of the mixture;
  • the mixture to be compressed may also suitably contain, as discussed in more detail below, (iii) one or more solubility control agents,
  • one or more fillers suitably in an amount of up to 75% by weight, preferably from 15% to 55% by weight.
  • the anionic surface active agent used in the blocks of the invention may be, for example, an alkali metal, typically sodium, paraffin sulphonate; alkali metal alkyl sulphate or alkali metal alkyl aryl sulphonate; especially an alkali metal alkyl benzene sulphonate.
  • an alkali metal typically sodium, paraffin sulphonate
  • alkali metal alkyl sulphate or alkali metal alkyl aryl sulphonate especially an alkali metal alkyl benzene sulphonate.
  • sodium dodecyl benzene sulphonate may be mentioned as it is a readily commercially available anionic surface active agent.
  • Anionic surfactants as commercially available, commonly contain minor amounts of inert water-soluble filler such as sodium sulphate.
  • inert water-soluble filler such as sodium sulphate.
  • any filler which may be present contributes to any filler content [component (iv)] of the block.
  • other surface active or detergent materials may be present in the block, especially nonionic surface active materials. Such materials should preferably be present in lesser amounts than the anionic surface active agent and thus may, for example, form upto 40%, preferably up to 10%, of the weight of the block.
  • nonionic surface active agents which may be employed include polyalkoxylated, usually polyethoxylated, fatty acids, fatty alcohols and alkyl phenols; and ethylene oxide/propylene oxide block ccpolymers.
  • the water-solubility of such nonionic surface active agents generally varies depending upon the average amount of ethylene oxide units per mole of surfactant.
  • ethoxvlated nonionic surface active agents containing an average of ten or more ethylene oxide units per mole are generally readily water-soluble whereas those containing lower amounts of ethylene oxide, especially those containing from 1 to 5 ethylene oxide units per mole, are less water-soluble and thus may serve both as surface active agents and as solubility control agents.
  • the second essential component of the mixture to be extruded is a rheological control agent, that is a material which, when dissolved or dispersed in water, gives a thickening or viscosity building effect.
  • the rheological control agent maybe a clay, such as
  • bentonite or laponite or a water-soluble or water dispersible organic polymer.
  • organic polymers are suitable for use in accordance with the invention.
  • Such polymers may be wholly synthetic or may be semi-synthetic polymers derived from natural materials.
  • on class of polymers for use in accordance with the invention may be wholly synthetic or may be semi-synthetic polymers derived from natural materials.
  • celluloses such as ethyl cellulose, methyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, ethyl hydroxyethyl cellulose, carboxymethyl hydroxyethyl cellulose, and hydroxyethyl cellulose.
  • a particularly preferred class of organic polymeric rheological control agents comprises the polysaccharide gums which have been found to assist in the extrusion process as well as being useful constituents of the block.
  • a particularly preferred natural polysaccharide gum for use in accordance with the invention is guar gum, but other gums which may be employed include xanthan gum, tragacanth, carragheenan, etc and their
  • the gum serves as a cohesion agent and also as a
  • solubility control agent and as a lubricant processing aid.
  • solubility control agents may be employed in addition to the gum or other rheological control agent.
  • solubility control agents examples include organic compounds of lower solubility than the anionic surface active agents and may vary in solubility from virtually completely insoluble to moderately soluble; the more insoluble being preferred for use in the present invention.
  • solubility control agents may be employed and examples of preferred, generally insoluble agents include: waxes, such as waxes of natural origin,
  • polyethylene waxes and amide waxes polyethylene waxes and amide waxes; long chain (e.g. containing more than 10 carbon atoms) fatty alcohols such as stearyl or behenyl alcohol; long chain, (e. g. containing more than 10 carbon atoms) fatty acids, such as stearic acid, and their salts; esters of long chain fatty alcohols with aliphatic carboxylic acids, such as stearyl acetate; esters of long chain fatty acids with mono or polyhydric alcohols, such as ethyl stearate or glycerol tristearate or mono-, di- or tri- glycerides of natural origin; fatty acid mono- and di- alkanol amides, such as coconut monoethanolamide; ethoxylated products of fatty acid mono- or di- ethanolamide ⁇ containing low amounts, e.g. 2 to 4 units, of ethylene oxide per mole; paradichlorobenzene; or long
  • hydrocarbons of natural or synthetic origin hydrocarbons of natural or synthetic origin.
  • Other preferred solubility control agents are generally insoluble perfume materials as discussed below.
  • solubility control agent present in general, the amount of solubility control agent present will depend upon three principal factors, the intended life of the block, the solubility of the solubility control agent and the amount of theology control agent. As will be appreciated, in order to obtain longer life more solubility control agent should be present and vice versa. Similarly, more of the more soluble solubility control agents will be required to obtain the same life than of the less soluble or wholly insoluble solubility control agents.
  • Suitable fillers for use in the blocks of the invention are organic fillers such as urea; and
  • inorganic fillers such as sodium carbonate, sodium bicarbonate, sodium chloride, sodium sulphate, borax, talc and calcium sulphate.
  • the blocks of the invention may contain other ingredients, especially colouring agents, perfumes, preservatives and lime scale-removing agents.
  • the filler component may also comprise a
  • water-softening agent such as, for example, inorganic water-softening agents, such as sodium hexametaphosphate or other alkali metal polyphosphates, or organic
  • the filler component may also comprise salts of polybasic metals, e. g. magnesium sulphate which serve to give improved character to the blocks as noted in our Application Serial No 2169612A
  • the block generally contain a dyestuff or other colouring agent, such as a pigment, in order to impart a pleasant colouration to the water and also to indicate to the user when the block has exhausted (i.e. on exhaustion of the block the water becomes colourless).
  • the block preferably contains water soluble dyestuff, suitably in an amount of up to 50% by weight, preferably in an amount of from 1 to 30% by weight.
  • Suitable dyestuffs include, for example, Acid Blue 9, Acid Blue 1, Acid Blue 7 and Acid Yellow 23.
  • the blocks may also contain perfumes to impart an acceptable odour to the flushed water.
  • the perfume may be a solid perfume, which term is intended to include micro-encapsulated perfumes (i. e. liquid perfumes contained in a water-soluble microcapsule) or other solid perfume materials such as paradichlorobenzene.
  • the perfume may be a liquid and in this case the term liquid perfume is intended to cover not only perfumes per se but solutions or perfumes in solvents therefor.
  • the total amount of perfume should not be more than 20% by weight and is preferably from 2 to 10% by weight. It may be noted that the term
  • perfume is intended to refer to any material giving an acceptable odour and thus materials giving a
  • perfume such as pine oils, terpinolenes or paradichlorobenzene may be employed. It may be further noted that liquid perfumes are frequently substantially water-insoiuble and thus they may serve as a part of the water-solubility control agent. In other words, a single material, such as pine oil, may serve both as perfume and a solubility control agent.
  • the blocks in accordance with the invention may also contain germicides.
  • Suitable germicides include, for example, formaldehyde release agents, iodophors and chlorinated phenols. These compounds may be present in the blocks in amounts of up to 10% by weight.
  • Suitable lime scale-removing agents are acidic compounds such as citric acid, formic acid, sulphuric acid, phosphoric acid and sulphamic acid. These, when present, suitably form up to 10% by weight of the block, especially in the case of solid acidic materials, such as citric acid, which then also serve as a filler.
  • the blocks in accordance with the invention are produced by an extrusion process comprising forming a mixture of the components for the block, extruding this mixture into rod or bar form and subsequently dividing the rod or bar into portions or blocks of the desired size.
  • the starting mixture contains a liquid component or a solid component capable of being wholly or partially liquefied under processing
  • Such a liquid component comprises a perfume component and/or a
  • solublity control agent component may serve not only as a perfume and solubility control agent but also as a processing aid.
  • the blocks of the invention are suitably from 20 to 150 gms in weight preferably from 30 to 120 gms in weight.
  • the invention further provides a method for
  • Blocks produced in accordance with the invention may also be used as containerized blocks (i. e. in dispensing
  • Lavatory cleansing blocks were prepared by extruding compositions having the formulations given in the Table below and cutting the extruded rod into blocks weighing about 50 gm. The blocks so obtained all had acceptable in-use lives when employed as free-standing lavatory cleaning blocks in lavatory cisterns. Table 1

Abstract

In a process for the production of lavatory cleansing blocks by extruding a mixture of appropriate ingredients for the block, the mixture to be extruded comprises, based on the total weight of the mixture; (i) from 5 to 85 % by weight, of one or more anionic surface active agents; and (ii) from 0.5 to 40 % by weight of one or more rheological control agents.

Description

LAVATORY CLEANSING
This invention is concerned with improvements in and relating to lavatory cleansing blocks.
In particular, the present invention is concerned with so-called "free standing" lavatory cleansing blocks which are immersed in the water cistern of a lavatory or urinal so that cleansing ingredients contained in the block are slowly dissolved in the water of the cistern. On flushing of the lavatory or urinal, the water from the cistern, containing dissolved cleansing ingredients, is flushed into the lavatory bowl or urinal and serves to cleanse it.
Generally such lavatory cleansing blocks comprise two principal components, namely:
(i) a surface active or detergent component comprising one or more surface active or detergent agents, and
(ii) a solubility retardant or solubility control
component, which serves to control the rate of dissolution of the block in the water of the cistern and which comprises one or more, more or less water-insoluble components. In addition to these two principal components, freestanding lavatory cleansing blocks commonly contain one or more of inert fillers, water-softening agents (which may also serve to some extent as fillers), colouring agents (especially water-soluble dyestuffs, commonly of a blue or green colour), perfumes and germicides or preservatives.
When first manufactured on a commercial scale, lavatory cleansing blocks were made by a "melt" process; that is the components for the block were melted
together and the melt cast into moulds to form the desired blocks. The "melt" process effectively
precludes the use of high melting or difficultly
meltable materials and especially precludes the use, as surfactants, of anionic surfactants; well-known and readily available surfactant materials.
Lavatory cleansing blocks containing anionic
surfactants may be made by a compression process, e.g. a tabletting process or, especially, an extrusion
process; in which a mixture of the components of the block is compressed and extruded to form a rod or bar which is subsequently divided into pieces of the desired size. We have now found that it is possible to manufacture blocks having a satisfactory in-use life by an extrusion process, which blocks comprise an anionic surfactant together with a rheological control agent, which latter serves, inter alia, to control the in-use life of the block.
Accordingly, the present invention provides a process for the production of lavatory cleansing blocks by extruding a mixture of appropriate ingredients for the blocks into rod form and subsequently cutting the rod into blocks of the desired size, in which the mixture to be extruded comprises, based on the total weight of the mixture;
(i) from 5 to 85%, preferably from 10 to 70%, more preferably from 20 to 50% by weight of one or more anionic surface active agents; and
(ii) from 0.5 to 40%, preferably from 3 to 15% by weight, of one or more rheological control agenets.
The mixture to be compressed may also suitably contain, as discussed in more detail below, (iii) one or more solubility control agents,
suitably in an amount of up to 20% by weight, preferably from 5 to 15% by weight; and
(iv) one or more fillers suitably in an amount of up to 75% by weight, preferably from 15% to 55% by weight.
The anionic surface active agent used in the blocks of the invention may be, for example, an alkali metal, typically sodium, paraffin sulphonate; alkali metal alkyl sulphate or alkali metal alkyl aryl sulphonate; especially an alkali metal alkyl benzene sulphonate. In particular, sodium dodecyl benzene sulphonate may be mentioned as it is a readily commercially available anionic surface active agent.
Anionic surfactants, as commercially available, commonly contain minor amounts of inert water-soluble filler such as sodium sulphate. In determining the amount of surfactant present in the block of the invention we refer to the true content of actual surfactant mentioned so that any filler which may be present contributes to any filler content [component (iv)] of the block. In addition to the anionic surface active agent component, other surface active or detergent materials may be present in the block, especially nonionic surface active materials. Such materials should preferably be present in lesser amounts than the anionic surface active agent and thus may, for example, form upto 40%, preferably up to 10%, of the weight of the block.
Typical nonionic surface active agents which may be employed include polyalkoxylated, usually polyethoxylated, fatty acids, fatty alcohols and alkyl phenols; and ethylene oxide/propylene oxide block ccpolymers. As is well known, the water-solubility of such nonionic surface active agents generally varies depending upon the average amount of ethylene oxide units per mole of surfactant. Thus, for example, ethoxvlated nonionic surface active agents containing an average of ten or more ethylene oxide units per mole are generally readily water-soluble whereas those containing lower amounts of ethylene oxide, especially those containing from 1 to 5 ethylene oxide units per mole, are less water-soluble and thus may serve both as surface active agents and as solubility control agents.
The second essential component of the mixture to be extruded is a rheological control agent, that is a material which, when dissolved or dispersed in water, gives a thickening or viscosity building effect. The rheological control agent maybe a clay, such as
bentonite or laponite, or a water-soluble or water dispersible organic polymer.
A wide variety of organic polymers are suitable for use in accordance with the invention. Such polymers may be wholly synthetic or may be semi-synthetic polymers derived from natural materials. Thus, for example, on class of polymers for use in accordance with the
invention are chemically modified celluloses such as ethyl cellulose, methyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, ethyl hydroxyethyl cellulose, carboxymethyl hydroxyethyl cellulose, and hydroxyethyl cellulose.
Wholly synthetic polymers which may be used in accordance with the invention include polyvinyl
alcohols; water-soluble partially hydrolysed polyvinyl acetates; poiyacrylonitriles; polyvinyl pyrrolidones; water-soluble polymers of ethylenically unsaturated carboxylic acids, such as acrylic acid and methacrylic acid, and salts thereof; base-hydrolysed
starch-polyacrylonitrile copolymers; polyacrylamides; polyether resins; and carboxypolymethylenes. A particularly preferred class of organic polymeric rheological control agents comprises the polysaccharide gums which have been found to assist in the extrusion process as well as being useful constituents of the block.
A particularly preferred natural polysaccharide gum for use in accordance with the invention is guar gum, but other gums which may be employed include xanthan gum, tragacanth, carragheenan, etc and their
semi-synthetic analogues as produced by fermentation. The gum serves as a cohesion agent and also as a
solubility control agent and as a lubricant processing aid. However other solubility control agents may be employed in addition to the gum or other rheological control agent.
Examples of such other solubility control agents are organic compounds of lower solubility than the anionic surface active agents and may vary in solubility from virtually completely insoluble to moderately soluble; the more insoluble being preferred for use in the present invention. As will be appreciated, a wide variety of solubility control agents may be employed and examples of preferred, generally insoluble agents include: waxes, such as waxes of natural origin,
polyethylene waxes and amide waxes; long chain (e.g. containing more than 10 carbon atoms) fatty alcohols such as stearyl or behenyl alcohol; long chain, (e. g. containing more than 10 carbon atoms) fatty acids, such as stearic acid, and their salts; esters of long chain fatty alcohols with aliphatic carboxylic acids, such as stearyl acetate; esters of long chain fatty acids with mono or polyhydric alcohols, such as ethyl stearate or glycerol tristearate or mono-, di- or tri- glycerides of natural origin; fatty acid mono- and di- alkanol amides, such as coconut monoethanolamide; ethoxylated products of fatty acid mono- or di- ethanolamideε containing low amounts, e.g. 2 to 4 units, of ethylene oxide per mole; paradichlorobenzene; or long chain aliphatic
hydrocarbons of natural or synthetic origin. Other preferred solubility control agents are generally insoluble perfume materials as discussed below.
In general, the amount of solubility control agent present will depend upon three principal factors, the intended life of the block, the solubility of the solubility control agent and the amount of theology control agent. As will be appreciated, in order to obtain longer life more solubility control agent should be present and vice versa. Similarly, more of the more soluble solubility control agents will be required to obtain the same life than of the less soluble or wholly insoluble solubility control agents. Suitable fillers for use in the blocks of the invention are organic fillers such as urea; and
inorganic fillers such as sodium carbonate, sodium bicarbonate, sodium chloride, sodium sulphate, borax, talc and calcium sulphate.
In addition to the above essential ingredients, the blocks of the invention may contain other ingredients, especially colouring agents, perfumes, preservatives and lime scale-removing agents.
The filler component may also comprise a
water-softening agent such as, for example, inorganic water-softening agents, such as sodium hexametaphosphate or other alkali metal polyphosphates, or organic
water-softening or chelating agents such as
ethylene-diamine tetraacetic acid and nitrilotriacetic acid and alkali metal salts thereof. Further the filler component may also comprise salts of polybasic metals, e. g. magnesium sulphate which serve to give improved character to the blocks as noted in our Application Serial No 2169612A
Thus, the blocks of the invention will also
generally contain a dyestuff or other colouring agent, such as a pigment, in order to impart a pleasant colouration to the water and also to indicate to the user when the block has exhausted (i.e. on exhaustion of the block the water becomes colourless). Accordingly, the block preferably contains water soluble dyestuff, suitably in an amount of up to 50% by weight, preferably in an amount of from 1 to 30% by weight. Suitable dyestuffs include, for example, Acid Blue 9, Acid Blue 1, Acid Blue 7 and Acid Yellow 23.
The blocks may also contain perfumes to impart an acceptable odour to the flushed water. The perfume may be a solid perfume, which term is intended to include micro-encapsulated perfumes (i. e. liquid perfumes contained in a water-soluble microcapsule) or other solid perfume materials such as paradichlorobenzene.
Alternatively the perfume may be a liquid and in this case the term liquid perfume is intended to cover not only perfumes per se but solutions or perfumes in solvents therefor. The total amount of perfume should not be more than 20% by weight and is preferably from 2 to 10% by weight. It may be noted that the term
"perfume" is intended to refer to any material giving an acceptable odour and thus materials giving a
"disinfectant" odour such as pine oils, terpinolenes or paradichlorobenzene may be employed. It may be further noted that liquid perfumes are frequently substantially water-insoiuble and thus they may serve as a part of the water-solubility control agent. In other words, a single material, such as pine oil, may serve both as perfume and a solubility control agent.
The blocks in accordance with the invention may also contain germicides. Suitable germicides include, for example, formaldehyde release agents, iodophors and chlorinated phenols. These compounds may be present in the blocks in amounts of up to 10% by weight.
Suitable lime scale-removing agents are acidic compounds such as citric acid, formic acid, sulphuric acid, phosphoric acid and sulphamic acid. These, when present, suitably form up to 10% by weight of the block, especially in the case of solid acidic materials, such as citric acid, which then also serve as a filler.
The blocks in accordance with the invention are produced by an extrusion process comprising forming a mixture of the components for the block, extruding this mixture into rod or bar form and subsequently dividing the rod or bar into portions or blocks of the desired size. Conveniently the starting mixture contains a liquid component or a solid component capable of being wholly or partially liquefied under processing
conditions, generally in an amount of up to 20% by weight, preferably from 3 to 15% by weight, of the total mixture. Most conveniently such a liquid component comprises a perfume component and/or a
solublity control agent component. Thus, for example, pine oil may serve not only as a perfume and solubility control agent but also as a processing aid. The blocks of the invention are suitably from 20 to 150 gms in weight preferably from 30 to 120 gms in weight.
The invention further provides a method for
cleansing a lavatory or urinal which comprises immersing in the water cistern of the lavatory or urinal a block produced in accordance with the invention. Blocks produced in accordance with the invention may also be used as containerized blocks (i. e. in dispensing
containers) or as rim blocks for mounting in WC bowls.
In order that the invention may be well well
understood the following Examples are given by way of illustration only. In the Examples all parts are by weight.
Lavatory cleansing blocks were prepared by extruding compositions having the formulations given in the Table below and cutting the extruded rod into blocks weighing about 50 gm. The blocks so obtained all had acceptable in-use lives when employed as free-standing lavatory cleaning blocks in lavatory cisterns. Table 1
Example 1 2 3 4 6
MARLON A390 30 - - - - -
NANSA HS80-SJ - - - 40 35 35
-
NANSA HS80GPF - 30 30 - -
SODIUM SULPHATE 55. 5 48.5 46.5 17. 5 17. 5 12.5
TALC 5 5 5 - - -
BLUE DYE 4 4 4 11 11 11 GUAR GUM 5 1 3 15 20 25
OBPCP 0. 5 0.5 0.5 0.5 0.5 0. 5
PINE OIL - 6 6 9 9 9
MgSO43H2O - 5 5 7 - -
TA BLE I I I Exampl e 17 18 19 20 21 22 23 24 25 26
Raosa NS8OGPT 50.5 50.5 50.5 50.5 50.5 45 45 45 45 45
Na2SO 4 21.0 21.0 21.0 21.0 21.0 17.5 17.5 17.5 17.5 16.4
Acid Blue . Dye - - - - - 11.0 11.0 11.0 11.0 12.1
OBPCP 1.5 1.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Pine Oil 10.0 10.0 10.0 10.0 10.0 9.0 1.0 9.0 9.0 0.5
MgSO4 JN2O 8.0 1.0 0.0 0.0 0.0 7.0 7.0 7.0 7.0
Acrylic Acid Polymer (Carbopol) 10 0 - - - - - - - -
Na Carbonymethyl Cellulose (Courlone - 10.0 - - - - - - - Na-Mg-Li Silicate ( Laponite RDS) - - 10.0 - - - - - -
( Modifiied) Starch (Oerestar AJ) 10.0 - - - - -
Cuar Gum 10.0 - - - -
Ianthan Gum (Neltrol TP) 10.0 - - -
Hydroxy Ethyl Cellulose ( Natrosol
250mm) 10.0 - -
Methyl Cellulose (Methocel A)
10.0 -
Hy droxy-propyl-methyl-cellulose 10.0
(Methgocel J)
10.0 Polyetha resin
Figure imgf000017_0001

Claims

1. A process for the production of lavatory cleansing blocks by extruding a mixture of appropriate ingredienrs for the block into rod form and cutting the rod into pieces of the desired size, in which the mixture to be extruded comprises, based on the total weight of the mixture;
(i) from 5 to 85% by weight, of one or more
anionic surface active agents; and
(ii) from 0.5 to 40% by weight, of one or more rheological control agents.
2. A process as claimed in Claim 1 in which the anionic surfactant is an alkali metal alkyl benzene sulphonate.
3. A process as claimed in claim 1 and claim 2 in which rheological control agent is a polysaccharide gum.
4. A process as claimed in any one of the preceding claims in which the mixture to be compressed also contains: (iii) up to 20% by weight of one or more
s olubility control agents ; and/or
(iv) up to 75% by weight of one or more fillers or builders.
5. A process as claimed in claim 1 substantially as hereinbefore described.
PCT/GB1991/001448 1990-08-28 1991-08-28 Lavatory cleansing WO1992003532A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3514600A JPH06504298A (en) 1990-08-28 1991-08-28 Toilet cleaning agent
AU84993/91A AU663850B2 (en) 1990-08-28 1991-08-28 Lavatory cleansing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909018779A GB9018779D0 (en) 1990-08-28 1990-08-28 Lavatory cleansing
GB9018779.0 1990-08-28

Publications (1)

Publication Number Publication Date
WO1992003532A1 true WO1992003532A1 (en) 1992-03-05

Family

ID=10681291

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001448 WO1992003532A1 (en) 1990-08-28 1991-08-28 Lavatory cleansing

Country Status (9)

Country Link
EP (1) EP0546039A1 (en)
JP (1) JPH06504298A (en)
AU (1) AU663850B2 (en)
CA (1) CA2090610A1 (en)
GB (1) GB9018779D0 (en)
MX (1) MX9100833A (en)
NZ (1) NZ239569A (en)
WO (1) WO1992003532A1 (en)
ZA (1) ZA916782B (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0728804A1 (en) * 1995-02-24 1996-08-28 INTERNATIONAL FLAVORS & FRAGRANCES INC. Extruded fragrance-containing polyvinyl alcohol and use thereof
WO1997000935A1 (en) * 1995-06-22 1997-01-09 Unilever Plc Improvements relating to lavatory cleaning blocks
WO1997020029A1 (en) * 1995-12-01 1997-06-05 S.C. Johnson & Son, Inc. Toilet cleaning compositions
NL1001434C2 (en) * 1995-02-24 1998-02-05 Int Flavors & Fragrances Inc Extruded PVA compsn. contg. fragrance, useful for moulded toilet rim block - contains plasticised polyvinyl alcohol or partly hydrolysed polyvinyl acetate extruded with fragrance and opt. foaming agent and hydrophobic silica.
US5750061A (en) * 1995-11-07 1998-05-12 Lonza Inc. Halohydantoin forms produced by melt extrusion and method for making
GB2290300B (en) * 1994-06-02 1998-06-10 Int Flavors & Fragrances Inc Extruded fragrance-containing polyvinyl alcohol and use thereof
WO1998035008A1 (en) * 1997-02-11 1998-08-13 S. C. Johnson & Son, Inc. In-tank toilet cleansing block
WO1998037171A1 (en) * 1997-02-20 1998-08-27 Reckitt & Colman Of India Limited Toilet cleaning block
WO1999040169A1 (en) * 1998-02-04 1999-08-12 Unilever Plc Lavatory cleansing composition
WO2008100393A1 (en) * 2007-02-12 2008-08-21 S. C. Johnson & Son, Inc. Self-sticking disintegrating block for toilet or urinal
EP1978080A1 (en) * 2007-03-29 2008-10-08 Bolton Manitoba SpA Adhesive hygienizing composition for the cleaning and/or disinfecting and/or perfuming of sanitary fixtures
WO2009105233A1 (en) * 2008-02-21 2009-08-27 S. C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US8143206B2 (en) 2008-02-21 2012-03-27 S.C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US8980813B2 (en) 2008-02-21 2015-03-17 S. C. Johnson & Son, Inc. Cleaning composition having high self-adhesion on a vertical hard surface and providing residual benefits
US9169456B2 (en) 2008-02-21 2015-10-27 S.C. Johnson & Son, Inc. Cleaning composition comprising an ethoxylated alcohol blend, having high self-adhesion and providing residual benefits
US9410111B2 (en) 2008-02-21 2016-08-09 S.C. Johnson & Son, Inc. Cleaning composition that provides residual benefits
CN107849497A (en) * 2015-07-10 2018-03-27 约翰逊父子公司 Gel Cleasing compositions
EP3399011A1 (en) * 2017-05-04 2018-11-07 Henkel AG & Co. KGaA Compositions suitable for lavatory cleaning comprising non-hydraulic binders
US10266798B2 (en) 2008-02-21 2019-04-23 S. C. Johnson & Son, Inc. Cleaning composition that provides residual benefits

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GB2290300B (en) * 1994-06-02 1998-06-10 Int Flavors & Fragrances Inc Extruded fragrance-containing polyvinyl alcohol and use thereof
EP0728804A1 (en) * 1995-02-24 1996-08-28 INTERNATIONAL FLAVORS & FRAGRANCES INC. Extruded fragrance-containing polyvinyl alcohol and use thereof
NL1001434C2 (en) * 1995-02-24 1998-02-05 Int Flavors & Fragrances Inc Extruded PVA compsn. contg. fragrance, useful for moulded toilet rim block - contains plasticised polyvinyl alcohol or partly hydrolysed polyvinyl acetate extruded with fragrance and opt. foaming agent and hydrophobic silica.
WO1997000935A1 (en) * 1995-06-22 1997-01-09 Unilever Plc Improvements relating to lavatory cleaning blocks
US5750061A (en) * 1995-11-07 1998-05-12 Lonza Inc. Halohydantoin forms produced by melt extrusion and method for making
WO1997020029A1 (en) * 1995-12-01 1997-06-05 S.C. Johnson & Son, Inc. Toilet cleaning compositions
WO1998035008A1 (en) * 1997-02-11 1998-08-13 S. C. Johnson & Son, Inc. In-tank toilet cleansing block
WO1998037171A1 (en) * 1997-02-20 1998-08-27 Reckitt & Colman Of India Limited Toilet cleaning block
WO1999040169A1 (en) * 1998-02-04 1999-08-12 Unilever Plc Lavatory cleansing composition
WO2008100393A1 (en) * 2007-02-12 2008-08-21 S. C. Johnson & Son, Inc. Self-sticking disintegrating block for toilet or urinal
AU2008216848B2 (en) * 2007-02-12 2013-07-04 S. C. Johnson & Son, Inc. Self-sticking disintegrating block for toilet or urinal
US7709433B2 (en) 2007-02-12 2010-05-04 S.C. Johnson & Son, Inc. Self-sticking disintegrating block for toilet or urinal
EP2363457A1 (en) * 2007-02-12 2011-09-07 S.C. Johnson & Son, Inc. Self-sticking disintegrating block for toilet or urinal
US8664172B2 (en) 2007-02-12 2014-03-04 S.C. Johnson & Son, Inc. Self-sticking disintegrating block for toilet or urinal
EP1978080A1 (en) * 2007-03-29 2008-10-08 Bolton Manitoba SpA Adhesive hygienizing composition for the cleaning and/or disinfecting and/or perfuming of sanitary fixtures
US8980813B2 (en) 2008-02-21 2015-03-17 S. C. Johnson & Son, Inc. Cleaning composition having high self-adhesion on a vertical hard surface and providing residual benefits
EP2254980B2 (en) † 2008-02-21 2016-11-30 S.C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US8143205B2 (en) 2008-02-21 2012-03-27 S.C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
WO2009105233A1 (en) * 2008-02-21 2009-08-27 S. C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US9169456B2 (en) 2008-02-21 2015-10-27 S.C. Johnson & Son, Inc. Cleaning composition comprising an ethoxylated alcohol blend, having high self-adhesion and providing residual benefits
US9175248B2 (en) 2008-02-21 2015-11-03 S.C. Johnson & Son, Inc. Non-ionic surfactant-based cleaning composition having high self-adhesion and providing residual benefits
US9181515B2 (en) 2008-02-21 2015-11-10 S.C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US9243214B1 (en) 2008-02-21 2016-01-26 S. C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US9296980B2 (en) 2008-02-21 2016-03-29 S.C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US9399752B2 (en) 2008-02-21 2016-07-26 S. C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US9410111B2 (en) 2008-02-21 2016-08-09 S.C. Johnson & Son, Inc. Cleaning composition that provides residual benefits
US8143206B2 (en) 2008-02-21 2012-03-27 S.C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US9771544B2 (en) 2008-02-21 2017-09-26 S. C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits
US10597617B2 (en) 2008-02-21 2020-03-24 S. C. Johnson & Son, Inc. Cleaning composition that provides residual benefits
US9982224B2 (en) 2008-02-21 2018-05-29 S. C. Johnson & Son, Inc. Cleaning composition having high self-adhesion and providing residual benefits comprising a cationic/nonionic surfactant system
US10435656B2 (en) 2008-02-21 2019-10-08 S. C. Johnson & Son, Inc. Cleaning composition comprising a fatty alcohol mixture having high self-adhesion and providing residual benefits
US10266798B2 (en) 2008-02-21 2019-04-23 S. C. Johnson & Son, Inc. Cleaning composition that provides residual benefits
US10392583B2 (en) 2008-02-21 2019-08-27 S. C. Johnson & Son, Inc. Cleaning composition with a hydrophilic polymer having high self-adhesion and providing residual benefits
CN107849497A (en) * 2015-07-10 2018-03-27 约翰逊父子公司 Gel Cleasing compositions
CN107849497B (en) * 2015-07-10 2020-08-21 约翰逊父子公司 Gel cleansing compositions
EP3320069B1 (en) * 2015-07-10 2022-12-14 S.C. Johnson & Son, Inc. Gel cleaning composition
EP3399011A1 (en) * 2017-05-04 2018-11-07 Henkel AG & Co. KGaA Compositions suitable for lavatory cleaning comprising non-hydraulic binders

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ZA916782B (en) 1992-05-27
MX9100833A (en) 1992-04-01
AU663850B2 (en) 1995-10-26
CA2090610A1 (en) 1992-03-01
AU8499391A (en) 1992-03-17
GB9018779D0 (en) 1990-10-10
JPH06504298A (en) 1994-05-19
NZ239569A (en) 1994-08-26
EP0546039A1 (en) 1993-06-16

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