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
  • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
  • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
  • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
  • C11D17/043—Liquid or thixotropic (gel) compositions
• • 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
  • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
  • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
  • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
  • C11D17/045—Multi-compartment
• • 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
  • C11D3/37—Polymers
  • C11D3/3788—Graft polymers

Definitions

• the present invention relates to the use of a liquid laundry detergent composition to minimize the adverse effects of rare accidental exposure of the detergent composition comprised with a liquid laundry detergent composition.
• Laundry water-soluble unit dose articles are liked by consumers as they are efficient and convenient to use. They offer simple unit dosing of laundry detergent composition to be used in the laundry wash operation removing the need for inconvenient and messy dosing.
• a liquid laundry detergent composition according to the present invention comprised within a water-soluble unit dose article provided a desired reduction in adverse effects from rare accidental exposures to the contents of the water-soluble unit dose article. Additional the liquid laundry detergent composition provided acceptable laundry cleaning, especially soil release benefits.
• the present invention is to the use of a liquid laundry detergent composition comprised in a water-soluble unit dose article to minimize potential adverse effects associated with accidental exposure to said liquid laundry detergent composition contained within the water-soluble unit dose article, wherein the liquid laundry detergent composition comprises a first polymer, wherein the first polymer is an amphiphilic graft polymer.
• the present invention is related to the use of a liquid laundry detergent composition comprised in a water-soluble unit dose article to provide laundry cleaning benefits and to minimize potential adverse effects associated with accidental exposure to said liquid laundry detergent composition contained within the water-soluble unit dose article.
• water-soluble unit dose articles contain a single dose of a laundry detergent composition enveloped in a water-soluble film.
• the consumer places the entire article into the drum of a washing machine or other wash receptacle together with fabrics to be washed.
• the water-soluble film dissolves releasing the laundry detergent composition contained within into the water and into contact with the fabrics.
• the concept is that the laundry detergent composition remains contained within the unit dose article until the unit dose article is contacted with water during use.
• Irritation is herein defined as the production of changes to the body following the application of test chemical to the anterior surface of the body, which are fully reversible within 21 days of application.
• eye irritation is defined as the production of changes in the eye following the application of test chemical to the anterior surface of the eye, which are fully reversible within 21 days of application.
• the term is interchangeable with "Reversible effects on the Eye” and with "UN GHS Category 2" (4), and can be assessed following the OECD Guidelines for Testing of Chemicals, Test No. 438: Isolated Chicken Eye Test Method for Identifying i) Chemicals Inducing Serious Eye Damage and ii) Chemicals Not Requiring Classification for Eye Irritation or Serious Eye Damage (Adopted version: 26 July 2013).
• the liquid laundry detergent composition minimizes potential adverse effects associated with accidental exposure to said liquid laundry detergent composition contained within the water-soluble unit dose article by minimizing potential adverse effects of the water-soluble unit dose article, preferably reducing skin irritation, eye irritation or a mixture thereof, most preferably eye irritation, of the water-soluble unit dose article.
• the liquid laundry detergent composition comprises a first polymer, wherein the first polymer is an amphiphilic graft polymer.
• the first polymer is discussed in more detail below.
• the potential adverse effects associated with accidental exposure to said liquid laundry detergent composition contained within the water-soluble unit dose article is for example when the water-soluble unit dose article is accidentally prematurely ruptured and the skin, eye or mixture thereof of the user are contacted with the liquid laundry detergent composition.
• the water-soluble unit dose article comprises the water-soluble film shaped such that the unit-dose article comprises at least one internal compartment surrounded by the water-soluble film.
• the unit dose article may comprise a first water-soluble film and a second water-soluble film sealed to one another such to define the internal compartment.
• the water-soluble unit dose article is constructed such that the liquid laundry detergent composition does not leak out of the compartment during storage. However, upon addition of the water-soluble unit dose article to water, the water-soluble film dissolves and releases the contents of the internal compartment into the wash liquor.
• the compartment should be understood as meaning a closed internal space within the unit dose article, which holds the liquid laundry detergent composition.
• a first water-soluble film may be shaped to comprise an open compartment into which the liquid laundry detergent composition is added.
• a second water-soluble film is then laid over the first film in such an orientation as to close the opening of the compartment. The first and second films are then sealed together along a seal region.
• the water-soluble film is described in more detail below.
• the unit dose article may comprise more than one compartment, even at least two compartments, or even at least three compartments.
• the compartments may be arranged in superposed orientation, i.e. one positioned on top of the other. In such an orientation, the unit dose article will comprise three films, top, middle and bottom.
• the compartments may be positioned in a side-by-side orientation, i.e. one orientated next to the other.
• the compartments may even be orientated in a 'tyre and rim' arrangement, i.e. a first compartment is positioned next to a second compartment, but the first compartment at least partially surrounds the second compartment, but does not completely enclose the second compartment.
• one compartment may be completely enclosed within another compartment.
• the unit dose article comprises at least two compartments, one of the compartments may be smaller than the other compartment.
• the unit dose article comprises at least three compartments, two of the compartments may be smaller than the third compartment, and preferably the smaller compartments are superposed on the larger compartment.
• the superposed compartments preferably are orientated side-by-side.
• the liquid laundry detergent composition according to the present invention may be comprised in at least one of the compartments. It may for example be comprised in just one compartment, or may be comprised in two compartments, or even in three compartments.
• Each compartment may comprise the same or different compositions.
• the different compositions could all be in the same form, or they may be in different forms.
• the water-soluble unit dose article may comprise at least two internal compartments, wherein the liquid laundry detergent composition is comprised in at least one of the compartments, preferably wherein the unit dose article comprises at least three compartments, wherein the detergent composition is comprised in at least one of the compartments.
• the water-soluble unit dose article comprises at least two compartments and the liquid laundry detergent composition is comprised in at least one compartment, preferably wherein the water-soluble unit dose article comprises at least two compartments of different sizes and the liquid laundry detergent composition is comprised in at least the larger compartment.
• the film of the present invention is soluble or dispersible in water.
• the water-soluble film preferably has a thickness of from 20 to 150 micron preferably 35 to 125 micron, even more preferably 50 to 110 micron, most preferably about 76 micron.
• the film has a water-solubility of at least 50%, preferably at least 75% or even at least 95%, as measured by the method set out here after using a glass-filter with a maximum pore size of 20 microns:
• Preferred film materials are preferably polymeric materials.
• the film material can, for example, be obtained by casting, blow-moulding, extrusion or blown extrusion of the polymeric material, as known in the art.
• Preferred polymers, copolymers or derivatives thereof suitable for use as pouch material are selected from polyvinyl alcohols, polyvinyl pyrrolidone, polyalkylene oxides, acrylamide, acrylic acid, cellulose, cellulose ethers, cellulose esters, cellulose amides, polyvinyl acetates, polycarboxylic acids and salts, polyaminoacids or peptides, polyamides, polyacrylamide, copolymers of maleic/acrylic acids, polysaccharides including starch and gelatine, natural gums such as xanthum and carragum.
• More preferred polymers are selected from polyacrylates and water-soluble acrylate copolymers, methylcellulose, carboxymethylcellulose sodium, dextrin, ethylcellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, maltodextrin, polymethacrylates, and most preferably selected from polyvinyl alcohols, polyvinyl alcohol copolymers and hydroxypropyl methyl cellulose (HPMC), and combinations thereof.
• the level of polymer in the pouch material for example a PVA polymer, is at least 60%.
• the polymer can have any weight average molecular weight, preferably from about 1000 to 1,000,000, more preferably from about 10,000 to 300,000 yet more preferably from about 20,000 to 150,000.
• polymers and/or copolymers can also be used as the pouch material, especially mixtures of polyvinylalcohol polymers and/or copolymers, especially mixtures of polyvinylalcohol homopolymers and/or anionic polyvinylalcohol copolymers preferably selected from sulphonated and carboxylated anionic polyvinylalcohol copolymers especially carboxylated anionic polyvinylalcohol copolymers.
• the water soluble film comprises a blend of a polyvinylalcohol homopolymer and a carboxylated anionic polyvinylalcohol copolymer.
• Preferred films exhibit good dissolution in cold water, meaning unheated distilled water.
• Preferably such films exhibit good dissolution at temperatures of 24°C, even more preferably at 10°C.
• good dissolution it is meant that the film exhibits water-solubility of at least 50%, preferably at least 75% or even at least 95%, as measured by the method set out here after using a glass-filter with a maximum pore size of 20 microns, described above.
• Preferred films are those supplied by Monosol under the trade references M8630, M8900, M8779, M8310.
• the film may be opaque, transparent or translucent.
• the film may comprise a printed area.
• the area of print may be achieved using standard techniques, such as flexographic printing or inkjet printing.
• the film may comprise an aversive agent, for example a bittering agent.
• Suitable bittering agents include, but are not limited to, naringin, sucrose octaacetate, quinine hydrochloride, denatonium benzoate, or mixtures thereof.
• Any suitable level of aversive agent may be used in the film. Suitable levels include, but are not limited to, 1 to 5000ppm, or even 100 to 2500ppm, or even 250 to 2000rpm.
• the water-soluble unit dose article comprises a water-soluble film, preferably wherein the water-soluble film comprises polyvinyl alcohol, preferably wherein the water-soluble film comprises polyvinyl alcohol polymer or copolymer, preferably a blend of polyvinylalcohol polymers and/or polyvinylalcohol copolymers, more preferably selected from sulphonated and carboxylated anionic polyvinylalcohol copolymers especially carboxylated anionic polyvinylalcohol copolymers, most preferably a blend of a polyvinylalcohol homopolymer and a carboxylated anionic polyvinylalcohol copolymer.
• liquid laundry detergent composition refers to any laundry detergent composition comprising a liquid capable of wetting and treating a fabric, and includes, but is not limited to, liquids, gels, pastes, dispersions and the like.
• the liquid composition can include solids or gases in suitably subdivided form, but the liquid composition excludes forms which are non-fluid overall, such as tablets or granules.
• the liquid laundry detergent composition comprises a first polymer, wherein the first polymer is an amphiphilic graft polymer.
• the first polymer is described in more detail below.
• the liquid laundry detergent composition comprises between 0.1% and 10%, preferably between 0.5% and 8%, more preferably between 1% and 7%, even more preferably between 1.5% and 6%, most preferably between 2% and 5% by weight of the liquid laundry detergent composition of the first polymer.
• the liquid laundry detergent composition preferably comprises less than 10%, preferably between 0% and 9.5%, preferably between 0.01% and 9%, more preferably between 0.1% and 7%, even more preferably between 1% and 5%, most preferably between 1 and 4% by weight of the liquid laundry detergent composition of a fatty alcohol ethoxylate non-ionic surfactant.
• Suitable alcohol ethoxylate nonionic surfactants include the condensation products of aliphatic alcohols with ethylene oxide.
• the alkyl chain of the aliphatic alcohol can either be straight or branched, substituted or unsubstituted.
• the starting alcohol can be naturally derived, e.g. starting from natural oils, or synthetically derived, e.g. alcohols obtained from for example oxo-, modified oxo- or Fischer-Tropsch processes.
• oxo-process derived alcohols include the Lial and Isalchem alcohols ex Sasol company and Lutensol alcohols ex BASF company.
• modified-oxo process derived alcohols include the Neodol alcohols ex Shell company.
• Fischer-Tropsch derived alcohols include Safol alcohols ex Sasol company.
• the alkoxylate chain of alcohol ethoxylates is made up solely of ethoxylate groups.
• the fatty alcohol ethoxylate has an average alkyl carbon chain length of between 5 and 30, preferably between 8 and 18, more preferably between 10 and 16, most preferably between 12 and 15.
• the fatty alcohol ethoxylate has an average degree of ethoxylation of between 0.5 and 20, preferably between 1 and 15, more preferably between 5 and 12, even more preferably between 6 and 10, most preferably between 7 and 8.
• Suitable for use herein are the ethoxylated alcohol of the formula R(OC 2 H 4 )n OH, wherein R is selected from the group consisting of aliphatic hydrocarbon radicals containing from about 8 to about 22 carbon atoms and the average value of n is from about 5 to about 22.
• particularly useful materials are condensation products of C 9 -C 16 alcohols with from about 5 to about 20 moles of ethylene oxide per mole of alcohol.
• particularly useful materials are condensation products of C 12 -C 16 alcohols with from about 6 to about 9 moles of ethylene oxide per mole of alcohol.
• nonionic surfactants may include: C12-C18 alkyl ethoxylates based on modified oxo alcohols, such as, NEODOL® nonionic surfactants from Shell; C12-C15 alkyl ethoxylates based on Fischer Tropsch Oxo alcohols, such as, SAFOL® nonionic surfactants from Sasol; C12-C18 alkyl ethoxylates based on natural or Ziegler alcohols, such as, Surfonic® nonionic surfactants from Huntsman; C14-C22 mid-chain branched alcohols ethoxylates, BAE x , wherein x is from 1 to 30.
• modified oxo alcohols such as, NEODOL® nonionic surfactants from Shell
• C12-C15 alkyl ethoxylates based on Fischer Tropsch Oxo alcohols such as, SAFOL® nonionic surfactants from Sasol
• the liquid laundry detergent composition may comprise up to 50%, preferably between 5% and 50%, more preferably between 7.5% and 45%, even more preferably between 10% and 40%, or even more preferably between 12% and 37%, by weight of the liquid laundry detergent composition of a non-soap anionic surfactant.
• the liquid laundry detergent composition may comprise between 15% and 30%, preferably between 15% and 25% by weight of the liquid laundry detergent composition of a non-soap anionic surfactant.
• the non-soap anionic surfactant may comprise a sulphate or a sulphonate anionic surfactant or a mixture thereof.
• the sulphonate anionic surfactant is preferably an alkylbenzene sulphonate which may be branched or linear, preferably a linear alkylbenzene sulphonate.
• the alkylbenzene sulphonate may be made using a hydrogen fluoride catalyzed reaction (HF) or a DETAL process or a mixture thereof.
• HF hydrogen fluoride catalyzed reaction
• DETAL DETAL alkylbenzene sulphonate
• the anionic surfactant comprises linear alkylbenzene sulphonate, alkyl sulphate, alkoxylated alkyl sulphate or a mixture thereof, more preferably a mixture of linear alkylbenzene sulphonate and alkoxylated alkyl sulphate.
• the ratio of linear alkylbenzene sulphonate to alkoxylated alkyl sulphate more preferably the ratio of linear alkylbenzene sulphonate to ethoxylated alkyl sulphate is from 1:2 to 20:1, preferably from 1.1:1 to 15:1, more preferably from 1.2:1 to 10:1, even more preferably from 1.3:1 to 5:1, most preferably from 1.4:1 to 3:1.
• the anionic surfactant comprises branched alkylbenzene sulphonate, alkyl sulphate, alkoxylated alkyl sulphate or a mixture thereof, more preferably a mixture of branched alkylbenzene sulphonate and alkoxylated alkyl sulphate.
• the ratio of branched alkylbenzene sulphonate to alkoxylated alkyl sulphate more preferably the ratio of branched alkylbenzene sulphonate to ethoxylated alkyl sulphate is from 1:2 to 20:1, preferably from 1.1:1 to 15:1, more preferably from 1.2:1 to 10:1, even more preferably from 1.3:1 to 5:1, most preferably from 1.4:1 to 3:1.
• the alkoxylated alkyl sulphate is an ethoxylated alkyl sulphate with an average degree of ethoxylation of between 0.5 and 7, preferably between 1 and 5, more preferably between 2 and 4, most preferably about 3.
• the non-soap surfactant comprises a mixture of one or more alkoxylated alkyl sulphates, preferably ethoxylated alkyl sulphates, and optionally an alkyl sulphate, the mixture having an average degree of ethoxylation of between 0.5 and 7, preferably between 1 and 5, more preferably between 2 and 4, most preferably about 3.
• the alkyl sulphate and/or alkoxylated alkyl sulphate preferably have an alkyl chain comprising on average between 8 and 18 carbon atoms, preferably between 10 and 16 carbons atoms, most preferably between 12 and 14 carbon atoms.
• the alkoxylated alkyl sulphate is an ethoxylated alkyl chain comprising on average between 12 and 14 carbon atoms in its alkyl chain and has an average degree of ethoxylation of about 3.
• the alkyl chain of the alkoxylated alkyl sulphate surfactant may be linear or branched or a mixture thereof.
• the linear alkylbenzene sulphonate may be a C 10 -C 16 linear alkylbenzene sulphonate or a C 11 -C 14 linear alkylbenzene sulphonate or a mixture thereof.
• Exemplary linear alkylbenzene sulphonates are C 10 -C 16 alkyl benzene sulfonic acids, or C 11 -C 14 alkyl benzene sulfonic acids.
• 'linear' we herein mean the alkyl group is linear.
• Alkyl benzene sulfonates are well known in the art.
• the weight ratio of non-soap anionic surfactant to fatty alcohol ethoxylate non-ionic surfactant is between 5:1 and 23:1 preferably between 7:1 and 23:1, more preferably between 8:1 and 23:1, most preferably between 9:1 and 20:1.
• the liquid laundry detergent composition comprises up to 60%, preferably between 5% and 55%, more preferably between 7.5% and 50% by weight of the liquid laundry detergent composition of non-soap surfactant.
• the liquid laundry detergent composition may comprise between 5% and 50%, more preferably between 7.5% and 45% by weight of the liquid laundry detergent composition of non-soap surfactant
• the liquid laundry detergent composition may comprise less than 10%, preferably less than 8%, more preferably less than 5%, most preferably between 1% and 5% by weight of the liquid laundry detergent composition of fatty acid, neutralised fatty acid soap or a mixture thereof.
• the neutralised fatty acid soap may be alkali metal neutralised, amine neutralised or a mixture thereof.
• the alkali metal may be selected from sodium, potassium, magnesium or a mixture thereof, preferably sodium.
• the amine is preferably an alkanolamine, preferably selected from monoethanolamine, diethanolamine, triethanolamine or a mixture thereof, more preferably monoethanolamine.
• the fatty acid, neutralised fatty acid soap or mixture thereof may be selected from palm kernel fatty acid, coconut fatty acid, rapeseed fatty acid, neutralized palm kernel fatty acid, neutralized coconut fatty acid, neutralized rapeseed fatty acid, or mixture thereof, preferably neutralized palm kernel fatty acid.
• the liquid laundry detergent composition may comprise between 0.01% and 8%, preferably between 0.05% and 6%, more preferably between 0.1% and 5%, even more preferably between 0.1% and 2.5% by weight of the liquid laundry detergent composition of a polyester terephthalates.
• Polyester terephtalate soil release polymers are commercially available from Clariant under the Texcare SRN and SRA tradenames.
• One particularly preferred polyester terephtalate soil release polymer is Texcare SRA300.
• the liquid laundry detergent composition may comprise a polyethyleneimine, preferably an alkoxylated polyethyleneimine, more preferably an ethoxylated polyethyleneimine and wherein preferably the liquid laundry detergent composition comprises greater than 0.5%, preferably between 1% and 10%, more preferably between 1.5% and 7%, most preferably between 2% and 5% by weight of the liquid laundry detergent composition of the polyethyleneimine, preferably ethoxylated polyethyleneimine.
• An example of an ethoxylated polyethyleneimine includes an ethoxylated polyethyleneimine with a polyethyleneimine backbone with a molecular weight of about 600, and comprising on average about 20 ethoxy units per ethoxylation chain.
• the ratio of polyethyleneimine to first polymer is between 6:1 and 1:6, more preferably between 5:1 and 1:5.
• the liquid laundry detergent composition may comprise a polysaccharide polymer, a modified polysaccharide polymer, a polysaccharide derived polymer, or a mixture thereof, preferably a cellulosic polymer, a modified cellulosic polymer or a mixture thereof, most preferably a cationically modified cellulosic polymer or a mixture thereof.
• the polysaccharide polymer is a cationically modified hydroethylcellulose ("Polyquaternium 10).
• the water-soluble unit dose article comprises up to 60% preferably up to 50%, more preferably up to 40%, most preferably up to 30% by weight of the liquid laundry detergent composition of a non-aqueous solvent, preferably selected from propylene glycol, dipropylene glycol, glycerol, sorbitol, ethanol or a mixture thereof.
• a non-aqueous solvent preferably selected from propylene glycol, dipropylene glycol, glycerol, sorbitol, ethanol or a mixture thereof.
• the liquid laundry detergent composition comprises less than 2%, preferably less than 1% by weight of the liquid laundry detergent composition of aminocarboxylate chelants, aminophosphonate chelants or a mixture thereof.
• the liquid laundry detergent composition has a pH from 6 to 10 preferably from 7 to 9, more preferably from 7 to 8.
• the liquid laundry detergent composition comprises a pH adjusting agent selected from alkanolamines, preferably monethanolamine, diethanolamine, triethanolamine or a mixture thereof, most preferably monoethanolamine.
• the liquid laundry detergent composition comprises an adjunct ingredient selected from hueing dyes, polymers, builders, dye transfer inhibiting agents, dispersants, enzymes, enzyme stabilizers, catalytic materials, bleach, bleach activators, polymeric dispersing agents, anti-redeposition agents, suds suppressors, aesthetic dyes, opacifiers, perfumes, perfume delivery systems, structurants, hydrotropes, processing aids, pigments, amphoteric surfactants, cyclic diamines, zwitterionic polyamines, anti-oxidants, preservatives and mixtures thereof.
• an adjunct ingredient selected from hueing dyes, polymers, builders, dye transfer inhibiting agents, dispersants, enzymes, enzyme stabilizers, catalytic materials, bleach, bleach activators, polymeric dispersing agents, anti-redeposition agents, suds suppressors, aesthetic dyes, opacifiers, perfumes, perfume delivery systems, structurants, hydrotropes, processing aids, pigments, amphoteric surfactants, cyclic di
• the water-soluble unit dose article comprises 15% or less by weight of the unit dose article of water, preferably the unit dose article comprises between 0.1% and 15%, more preferably between 1% and 12.5% by weight of the unit dose article of water.
• the first polymer is an amphiphilic graft polymer.
• the first polymer is based on polyalkylene oxides and vinyl esters, preferably based on water-soluble polyalkylene oxides (A) as a graft base and side chains formed by polymerization of a vinyl ester component (B), said polymer having an average of ⁇ 1 graft site per 50 alkylene oxide units, more preferably wherein the molar ratio of grafted to ungrafted alkylene oxide units is from 0.002 to 0.05, preferably from 0.002 to 0.035, more preferably from 0.003 to 0.025, most preferably from 0.004 to 0.02.
• the first polymer preferably has a mean molecular mass Mw of from 3000 to 100 000.
• the first polymer has a polydispersity Mw/Mn of less than 3, wherein Mn is the mean molar mass.
• the first polymer may have from 20% to 70%, preferably from 25% to 60% by weight of the first polymer of the polyalkylene oxide (A), preferably the water-soluble polyalkylene oxide (A) as a graft base.
• the polyalkylene oxide graft base (A) is a polyethylene glycol.
• the first polymer comprises from 30% to 80% by weight of the vinyl ester component (B), preferably wherein the vinyl ester component (B) comprises a vinyl acetate, vinyl propionate or a mixture thereof (B1), and optionally an C1-C8-alkyl acrylate (B2) more preferably from 70% to 100% by weight of vinyl acetate (B1) and from 0% to 30% by weight of a C1-C8-alkyl acrylate (B2).
• the vinyl ester component (B) comprises a vinyl acetate, vinyl propionate or a mixture thereof (B1), and optionally an C1-C8-alkyl acrylate (B2) more preferably from 70% to 100% by weight of vinyl acetate (B1) and from 0% to 30% by weight of a C1-C8-alkyl acrylate (B2).
• the first polymer comprises less than 10% by weight of the amphiphilic graft polymer of polyvinyl ester (B) in ungrafted form.
• the first polymer is a polyethylene glycol graft base and vinyl acetate side chains, as according to the following structure; wherein, preferably the ethylene oxide / vinyl acetate content is from 30%/70% to 50%/50%, and wherein preferably the amphiphilic graft polymer has a mean molar mass (Mn) value of from 10000g/mol to 20000g/mol, more preferably from 10000g/mol to 15000g/mol, and wherein preferably the amphiphilic graft polymer has a mean molecular mass (Mw) value of from 20000g/mol to 30000g/mol, preferably from 25000g/mol to 30000g/mol, more preferably, yielding a polydispersity Mw/Mn of from 1 to 3, preferably 1.5 to 2.5, wherein preferably the amphiphilic graft polymer has an average degree of grafted units per polyethyleneglycol polymer graft base preferably is less than 2.7, preferably between 0.5 and 2.5, more
• a first water-soluble film may be shaped to comprise an open compartment into which the detergent composition is added.
• a second water-soluble film is then laid over the first film in such an orientation as to close the opening of the compartment.
• the first and second films are then sealed together along a seal region using known sealing means such as solvent, heat or a mixture thereof.
• Comparative Example formulation lacking the amphiphilic graft polymer according to the invention as well as the Example formulation comprising the amphiphilic graft polymer according to the invention were assessed for irritancy profile following the OECD Guidelines for Testing of Chemicals, Test No. 438: Isolated Chicken Eye Test Method for Identifying i) Chemicals Inducing Serious Eye Damage and ii) Chemicals Not Requiring Classification for Eye Irritation or Serious Eye Damage (Adopted version : 26 July 2013).
• Irritation index CS + 20 * CO + 20 * FR in which CS equals the mean % of corneal swelling, CO equals the maximum mean opacity score and FR equals the mean fluorescein retention score at 30 minutes after treatment.
• a higher irritation index reflects a worse irritancy profile.
• a higher resulting overall CLP classification indicates a milder irritancy profile.
• Test Formulations Component (100% active basis - wt%) Comparative Example Example HLAS anionic surfactant 21.2 21.2 HAE3S (C24AE3S) anionic surfactant 14.4 14.4 C24AE7 nonionic surfactant 3.8 3.8 Citric acid 1.4 1.4 Palm Kernel Fatty acid 5.9 5.9 HEDP chelant 2.4 2.4 Amphiphilic graft polymer* - 4.4 Ethoxylated polyethyleneimine (PEI600EO20)** 1.6 1.6 Brightener 49 0.4 0.4 Monoethanolamine 10.9 10.9 Water 10 10 1,2 Propanediol 11.0 15.4 Glycerine 3.8 3.8 DiPropyleneGlycol 3.9 3.9 Minors (preservatives, antioxidant, anti-foam, perfume, dye Hydrogenated Castor Oil structurant, protease & amylase enzyme, processing aids) Balance to 100% Balance to 100% *polyethylene glycol graft polymer comprising a polyethylene glycol backbone (Pluriol
• Example composition comprising the amphiphilic graft polymer according to the invention causes reduced corneal swelling, opacity and epithelium erosion when tested according to the OECD Guidelines referenced above, when compared to the same formula lacking the amphiphilic graft polymer according to the invention (Comparative Example), resulting in a more favorable severity category classification.

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Citations (5)

• 2017
  • 2017-12-06 EP EP17205690.5A patent/EP3495466A1/de not_active Withdrawn

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