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WO2017202922A1 - Laundry composition - Google Patents

Laundry composition Download PDF

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Publication number
WO2017202922A1
WO2017202922A1 PCT/EP2017/062561 EP2017062561W WO2017202922A1 WO 2017202922 A1 WO2017202922 A1 WO 2017202922A1 EP 2017062561 W EP2017062561 W EP 2017062561W WO 2017202922 A1 WO2017202922 A1 WO 2017202922A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
composition according
composition
fatty acid
dyes
Prior art date
Application number
PCT/EP2017/062561
Other languages
French (fr)
Inventor
Caroline Alexandra Hall
Matthew Lloyd Parry
Original Assignee
Unilever Plc
Unilever N.V.
Conopco, Inc., D/B/A Unilever
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 Unilever Plc, Unilever N.V., Conopco, Inc., D/B/A Unilever filed Critical Unilever Plc
Publication of WO2017202922A1 publication Critical patent/WO2017202922A1/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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • 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
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/30—Amines; Substituted amines ; Quaternized amines

Definitions

  • This invention relates to a laundry composition. More particularly the invention relates to an aqueous liquid laundry detergent.
  • fatty acid in aqueous liquid laundry detergent compositions it is useful to include fatty acid in aqueous liquid laundry detergent compositions to provide, amongst other things foam control to the composition when in use by the consumer.
  • fatty acid in the formulation can be unstable and lead to phase separation, especially phase separation where a separate fatty acid based phase is layered on top of the formulation.
  • triethanolamine as a neutralising species, that by a specific minimum weight ratio of triethanolamine to fatty acid in the composition, the stability of the formulation can be improved, and the aforementioned problem solved.
  • an aqueous laundry liquid detergent composition according to claim 1.
  • the weight ratio of triethanolamine (c) to fatty acid (b) is from 4:1 to 1 1 :1 .
  • the surfactant is preferably present at a level of 5 to 40 wt.%, more preferably from 6 to 30 wt.%.
  • a preferred surfactant system comprises the anionic surfactants linear alkylbeneze sulfonate and sodium lauryl ether sulfate as well as the nonionic surfactant alcohol ethoxylate.
  • the fatty acid is preferably present at a level of from 0.5 to 5 wt.%, more preferably from 0.75 to 4 wt.%.
  • the fatty acid is preferably a C6-C22 fatty acid and/or salt thereof.
  • the composition comprises from 0.1 to 5 wt.%, preferably from 0.25 wt.% to 4 wt.%, more preferably from 0.5 to 2.5 wt.%, of one or more sequestrants.
  • said sequestrants are phosphonic acids and/or salts thereof.
  • the phosphonic acid (or salt thereof) sequestrant is preferably present, and is preferably selected from the group consisting of: 1 -Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP); Diethylenetriaminepenta(methylenephosphonic acid) (DTPMP);
  • HDTMP Hexamethylenediaminetetra(methylenephosphonic acid)
  • ATMP Aminotris(methylenephosphonic acid)
  • Ethylenediaminetetra(methylenephosphonic acid) (EDTMP);
  • TTMP Tetramethylenediaminetetra(methylenephosphonic acid)
  • PBTC Phosphonobutanetricarboxylic acid
  • the sequestrant is preferably in acid form. This means that it is a phosphonic acid.
  • the preferred phosphonic acid sequestrant is 1 -Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP).
  • compositions comprises sulfites, they are present at a level of less than 0.1 wt.%, preferably less than 0.01 wt.%, more preferably less than 0.001 wt.%, most preferably the composition is free from sulfites.
  • the composition preferably comprises 0.05 to 6 wt.%, preferably from 0.1 to 5 wt.% of one or more polyester soil release polymer(s).
  • the composition comprises from 0.25 to 8 wt.%, preferably from 0.5 to 6 wt.% of an alkoxylated polyethyleneimine.
  • the alkoxylated polyethyleneimine is an ethoxylated polyethyleneimine.
  • the composition preferably comprises from 0.0001 to 1 wt.%, preferably from 0.001 to 0.5 wt.%, more preferably from 0.001 to 0.25 wt.% of an isothiazolinone preservative.
  • the isothiazolinone is benzisothiazolinone and/or methylisothiazolinone.
  • a preferred aqueous laundry liquid detergent composition comprises:- a) from 6 to 30 wt.% of a surfactant system comprising linear alkylbenzene sulfonate, sodium lauryl ether sulfate, and alcohol ethoxylate;
  • e from 0.5 to 2.5 wt.% of a phosphonic acid sequestrant, preferably 1 - Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP);
  • a phosphonic acid sequestrant preferably 1 - Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP);
  • the aqueous liquid may preferably comprise one or more hydrophobically modified alkali swellable emulsion (HASE) copolymers, which may be linear in nature or crosslinked.
  • HASE hydrophobically modified alkali swellable emulsion
  • the composition comprises surfactant at a level of from 4 to 50 wt.%.
  • surfactant is included at a level of from 5 to 40 wt.%, more preferably from 6 to 30 wt.%.
  • the surfactant system may comprise one or more anionic, nonionic, cationic and amphoteric (zwitterionic) surfactants.
  • Suitable anionic surfactant compounds which may be used can be salts of organic sulfates and sulfonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals.
  • suitable synthetic anionic surfactant compounds are alkyl sulfates, especially those obtained by sulfating higher Cs to C18 alcohols, produced for example from tallow or coconut oil, alkyl C9 to C20 benzene sulfonates, particularly linear secondary alkyl C10 to C15 benzene sulfonates; and alkyl glyceryl ether sulfates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum.
  • the surfactant preferably comprises anionic surfactant.
  • Preferred anionic surfactant compounds comprise Cn to C15 linear alkyl benzene sulfonate, and C10 to Cis alkyl sulfate ethoxylated with an average of 1 to 3 EO.
  • Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • Specific nonionic detergent compounds are C6 to C22 alkyl phenol-ethylene oxide condensates, generally 5 to 25 EO, i.e. 5 to 25 units of ethylene oxide per molecule, and the condensation products of aliphatic Cs to C18 primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 40 EO.
  • the nonionic surfactant preferably comprises alcohol ethoxylate.
  • the alcohol ethoxylates are formed from the reaction of primary or secondary alcohols with ethylene oxide.
  • an aliphatic Cs to C18 primary or secondary linear or branched alcohol is reacted with ethylene oxide in the required molar amount to produce the alcohol ethoxylate.
  • Preferred alcohol ethoxylates have from 2 to 40, preferably from 3 to 30, more preferably from 5 to 20 ethylene oxide units attached to the aliphatic chain.
  • surfactants such as amphoteric (zwitterionic) and cationic surfactants may also be present.
  • a preferred surfactant system comprises the anionic surfactants linear alkylbeneze sulfonate and sodium lauryl ether sulfate as well as the nonionic surfactant alcohol ethoxylate.
  • the surfactant system comprises Cn to C15 linear alkyl benzene sulfonate, C10 to C18 alkyl sulfate ethoxylated with an average of 1 to 3 EO, and an ethoxylated alcohol which is a Cs to Cis alcohol ethoxylated with from 5 to 20 moles of EO.
  • the term fatty acid includes the free fatty acid as well as neutralised salts thereof.
  • the fatty acid is present at a level of from 0.25 to 5 wt.%.
  • the fatty acid is present at a level of from 0.5 to 5 wt.%, more preferably from 0.75 to 4 wt.%.
  • the fatty acid is preferably a C6-C22 fatty acid and/or salt thereof.
  • fatty acid and their salts are not included in the level of surfactant.
  • composition comprises from 1 to 20 wt.%, preferably from 2 to 18 wt.%, more preferably from 4 to 16 wt.%, of triethanolamine. Further preferred levels of
  • triethanolamine may range from 5 to 16 wt.%, and 6 to 16 wt.%.
  • Triethanolamine is an alkanolamine, and is present to neutralise the acids present in the formulation and to provide the correct pH of the composition.
  • the composition preferably has a pH of between 7 to 8.
  • the weight ratio of triethanolamine to the sum of other alkanolamines is greater than 12:1.
  • the weight ratio of triethanolamine to the sum of other alkanolamines is greater than 16:1 , more preferably at least than 20:1 .
  • triethanolamine is the sole alkanolamine present, and most preferably triethanolamine is the sole neutralising species present in the formulation. It is preferred if monoethanolamine and any alkali metal (or salt version thereof) is absent from the formulation.
  • the composition is an aqueous laundry liquid. Water is present at a level of from 25 to 94 wt.%.
  • the aqueous composition can take the form of an isotropic liquid, or it can be a structured liquid using an external structurant. Additional preferred ingredients
  • the composition comprises from 0.1 to 5 wt.%, preferably from 0.25 to 4 wt.%, more preferably from 0.5 to 2.5 wt.% of one or more sequestrants.
  • a preferred sequestrant is a phosphonic acid or a salt thereof.
  • the phosphonic acid (or salt thereof) sequestrant is preferably selected from the group consisting of: 1 -Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP);
  • DTPMP Diethylenetriaminepenta(methylenephosphonic acid)
  • HDTMP Hexamethylenediaminetetra(methylenephosphonic acid)
  • ATMP Aminotris(methylenephosphonic acid)
  • Ethylenediaminetetra(methylenephosphonic acid) (EDTMP);
  • TTMP Tetramethylenediaminetetra(methylenephosphonic acid)
  • PBTC Phosphonobutanetricarboxylic acid
  • the sequestrant is added to the formulation in acid form.
  • Preferred phosphonic acid sequestrants are 1 -Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP), commercially available as Dequest® 2010; and
  • DTPMP Diethylenetriaminepenta(methylenephosphonic acid)
  • HEDP Hexadroxyethylidene-1 ,1 - diphosphonic acid
  • composition comprises sulfites (for example sodium sulfite), then they are present at a level of less than 0.1 wt.%, preferably less than 0.01 wt.%, more preferably less than 0.001 wt.%. It is most preferred that the composition is free from sulfites.
  • sulfites for example sodium sulfite
  • composition may optionally, but preferably comprise from 0.05 to 6 wt.%, preferably from 0.1 to 5 wt.% of one or more polyester soil release polymer(s).
  • polyester soil release polymers are described in WO 2014/029479 and WO 2016/005338. Alkoxylated polvethylenimine
  • the composition preferably comprises from 0.25 to 8 wt.%, preferably from 0.5 to 6 wt.% of an alkoxylated polyethyleneimine. Another preferred level is from 1 to 4 wt.%.
  • the polyethyleneimine may be linear or branched. It may be branched to the extent that it is a dendrimer.
  • the alkoxylation may typically be ethoxylation or propoxylation, or a mixture of both. Where a nitrogen atom is alkoxylated, a preferred average degree of alkoxylation is from 10 to 30, preferably from 15 to 25.
  • a preferred material is ethoxylated polyethyleneimine, with an average degree of ethoxylation being from 10 to 30 preferably from 15 to 25, where a nitrogen atom is ethoxylated.
  • the composition comprises a preservative.
  • the composition comprises from 0.0001 to 1 wt.%, preferably from 0.001 to 0.5 wt.%, more preferably from 0.001 to 0.25 wt.% of a preservative.
  • the composition comprises from 0.0001 to 1 wt.%, preferably from 0.001 to 0.5 wt.%, more preferably from 0.001 to 0.25 wt.% of an isothiazolinone preservative.
  • the preferred isothiazolinone preservatives are benzisothiazolinone and/or
  • methylisothiazolinone are commercially available as Proxel® GXL and Neolone® 950.
  • the composition may comprise a thickening polymer. If it does, then preferably the thickening polymer comprises a hydrophobically modified alkali swellable emulsion
  • the copolymer may be linear in nature or crosslinked. If present, then preferably the thickening polymer is present at a level of from 0.1 to 5 wt.%.
  • Hydrophobically modified alkali swellable emulsion (HASE) copolymers are known as synthetic associative thickeners. These copolymers typically contain a backbone comprising a major part of residues of randomly distributed methacrylic acid (MAA) and ethylacrylate (EA) monomers. Inserted into this backbone are a small proportion of hydrophobically modified groups, usually less than 3 mol%. The monomers to form these hydrophobic groups are sometimes referred to as surfmers or associative monomers.
  • the copolymer due to its structure, the copolymer, when dissolved in an alkaline aqueous liquid, induces a variety of interacting forces such as hydrophobic, hydrogen bonding, electrostatic, etc and this modifies the rheology of the liquid. It is further known that the HASE copolymers and their thickening behaviour may be further modified by use of crosslinkers. HASE copolymers are usually synthesized via emulsion polymerization.
  • Preferred hydrophobically modified alkali swellable emulsion (HASE) copolymers are made up of the addition polymerisation of: a) unsaturated diacid or an unsaturated cyclic anhydride precursor of such an ethylenically unsaturated diacid; b) acrylic acid or methacrylic acid; c) C-i-Cs alkyl ester of acrylic acid or methacrylic acid; and, d) a surfmer which is a hydrophobic material which is an unsaturated alkoxylated ester, preferably with 15 to 35 alkoxy groups and an alkyl chain length of > 10 carbon atoms.
  • the copolymer may additionally comprise a crosslinking agent to make a crosslinked thickening polymer.
  • the composition may optionally, but preferably comprise a fluorescer. If present, then preferably the composition comprises from 0.005 to 2 wt.%, preferably from 0.01 to 1 wt.%, more preferably from 0.1 to 0.5 wt.% of a fluorescer.
  • Preferred fluorescers are diamino stilbene disulfonic acid fluorescers.
  • the fluorescer is preferably of the diamino stilbene disulfonic acid cyanuric chloride type. In these materials, the diamino stilbene disulfonic acid is reacted with cyanuric chloride to provide the fluorescer material.
  • An example of a preferred fluorescer is Tinopal® 5BM-GX available from BASF.
  • composition may further comprise one of more of the following ingredients:
  • structurants foam boosting agents, bactericides, pH buffering agents, polyelectrolytes, anti-shrinking agents, anti-wrinkle agents, anti-oxidants, sunscreens, anti-corrosion agents, drape imparting agents, anti-static agents, ironing aids, colorants, pearlisers, opacifiers, and shading dye.
  • the liquid detergent composition may optionally include a hydrotrope, which can prevent liquid crystal formation.
  • a hydrotrope which can prevent liquid crystal formation.
  • the addition of the hydrotrope thus aids the clarity/transparency of the composition.
  • Suitable hydrotropes include but are not limited to propylene glycol and glycerol.
  • the detergent composition may comprise an effective amount of at least one enzyme selected from the group comprising, pectate lyase, protease, amylase, cellulase, lipase, mannanase.
  • at least one enzyme selected from the group comprising, pectate lyase, protease, amylase, cellulase, lipase, mannanase.
  • it comprises at least 2 of this group of enzymes, more advantageously at least 3 and most advantageously at least 4 of the enzymes from this group.
  • Any enzyme present in the composition may be stabilized using conventional stabilizing agents, e.g., a polyol for example propylene glycol or glycerol, a sugar or sugar alcohol, lactic acid, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative for example 4-formylphenyl boronic acid, and the composition may be formulated as described in e.g. WO 92/19709 and WO 92/19708.
  • stabilizing agents e.g., a polyol for example propylene glycol or glycerol, a sugar or sugar alcohol, lactic acid, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative for example 4-formylphenyl boronic acid
  • a lignin compound may be used in the composition in an amount that can be optimised by trial and error.
  • Lignin is a component of all vascular plants, found mostly between cellular structures but also within the cells and in the cell walls.
  • the lignin compound comprises a lignin polymer and more preferably it is a modified lignin polymer.
  • a modified lignin polymer as used herein is lignin that has been subjected to a chemical reaction to attach chemical moieties to the lignin covalently. The attached chemical moieties are preferably randomly substituted.
  • Compositions may comprise a weight efficient bleach system. Such systems typically do not utilise the conventional percarbonate and bleach activator approach.
  • An air bleach catalyst system is preferred.
  • Suitable complexes and organic molecule (ligand) precursors for forming complexes are available to the skilled worker, for example, from: WO 98/39098; WO 98/39406, WO 97/48787, WO 00/29537; WO 00/52124, and WO 00/60045, incorporated by reference.
  • An example of a preferred catalyst is a transition metal complex of MeN4Py ligand (N,N-bis(pyridin-2-yl-methyl)-1 -,1 -bis(pyridin- 2-yl)-1 -aminoethane).
  • Suitable bispidon catalyst materials and their action are described in WO 02/48301.
  • the bleach catalyst may be encapsulated to reduce interaction with other components of the liquid during storage.
  • Photobleaches may also be employed.
  • a "photobleach” is any chemical species that forms a reactive bleaching species on exposure to sunlight, and preferably is not permanently consumed in the reaction.
  • Preferred photo-bleaches include singlet oxygen photo-bleaches and radical photo-bleaches.
  • Suitable singlet oxygen photo-bleaches may be selected from, water soluble phthalocyanine compounds, particularly metallated phthalocyanine compounds where the metal is Zn or AI-Z1 where Z1 is a halide, sulphate, nitrate, carboxylate, alkanolate or hydroxyl ion.
  • the phthalocyanin has 1 -4 SO3X groups covalently bonded to it where X is an alkali metal or ammonium ion.
  • Such compounds are described in WO 2005/014769 (Ciba).
  • the bleach catalyst is typically incorporated at a level of about 0.0001 to about 10 wt.%, preferably about 0.001 to about 5 wt.% Perfume
  • the composition may optionally, but preferably comprise a perfume.
  • the perfume may be present as a free oil, or it may be an encapsulated perfume.
  • a preferred level of inclusion of perfume is from 0.1 to 3 wt.%.
  • a particularly preferred way of ensuring that perfume is employed efficiently is to use an encapsulated perfume.
  • Use of a perfume that is encapsulated reduces the amount of perfume vapour that is produced by the composition before it is diluted. This is important when the perfume concentration is increased to allow the amount of perfume per wash to be kept at a reasonably high level.
  • the perfume is not only encapsulated but also that the encapsulated perfume is provided with a deposition aid to increase the efficiency of perfume deposition and retention on fabrics.
  • the deposition aid is preferably attached to the encapsulate by means of a covalent bond, entanglement or strong adsorption, preferably by a covalent bond or entanglement.
  • Shading dye can be used to improve the performance of the compositions.
  • Preferred dyes are violet or blue. It is believed that the deposition on fabrics of a low level of a dye of these shades, masks yellowing of fabrics.
  • a further advantage of shading dyes is that they can be used to mask any yellow tint in the composition itself.
  • Direct dyes are the class of water soluble dyes which have an affinity for fibres and are taken up directly. Direct violet and direct blue dyes are preferred.
  • bis-azo or tris-azo dyes are used.
  • Preferred dyes are direct violet 7, direct violet 9, direct violet 1 1 , direct violet 26, direct violet 31 , direct violet 35, direct violet 40, direct violet 41 , direct violet 51 , and direct violet 99.
  • Bis-azo copper containing dyes for example direct violet 66 may be used.
  • the benzidene based dyes are less preferred.
  • the direct dye is present at 0.000001 to 1 wt.% more preferably 0.00001 wt.% to 0.0010 wt.% of the composition.
  • the direct dye may be covalently linked to the photo-bleach, for example as described in WO 2006/024612.
  • Cotton substantive acid dyes give benefits to cotton containing garments.
  • Preferred dyes and mixes of dyes are blue or violet.
  • Preferred acid dyes are azine dyes and non-azine dyes.
  • Preferred azine dyes are: acid blue 98, acid violet 50, and acid blue 59, more preferably acid violet 50 and acid blue 98.
  • Other preferred non-azine acid dyes are acid violet 17, acid black 1 and acid blue 29.
  • the acid dye is present at 0.0005 wt.% to 0.01 wt.% of the formulation.
  • composition may comprise one or more hydrophobic dyes selected from
  • Hydrophobic dyes are dyes which do not contain any charged water solubilising group. Hydrophobic dyes may be selected from the groups of disperse and solvent dyes. Blue and violet anthraquinone and mono-azo dye are preferred.
  • Preferred dyes include solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63 and disperse violet 77.
  • the hydrophobic dye is present at 0.0001 wt.% to 0.005 wt.% of the
  • Basic dyes are organic dyes which carry a net positive charge. They deposit onto cotton. They are of particular utility for used in composition that contain predominantly cationic surfactants. Dyes may be selected from the basic violet and basic blue dyes listed in the Colour Index International.
  • Preferred examples include triarylmethane basic dyes, methane basic dye, anthraquinone basic dyes, basic blue 16, basic blue 65, basic blue 66, basic blue 67, basic blue 71 , basic blue 159, basic violet 19, basic violet 35, basic violet 38, basic violet 48; basic blue 3, basic blue 75, basic blue 95, basic blue 122, basic blue 124, basic blue 141 .
  • Reactive dyes are dyes which contain an organic group capable of reacting with cellulose and linking the dye to cellulose with a covalent bond. They deposit onto cotton.
  • the reactive group is hydrolysed or reactive group of the dyes has been reacted with an organic species for example a polymer, so as to the link the dye to this species.
  • Dyes may be selected from the reactive violet and reactive blue dyes listed in the Colour Index International.
  • Preferred examples include reactive blue 19, reactive blue 163, reactive blue 182 and reactive blue, reactive blue 96.
  • Dye conjugates are formed by binding direct, acid or basic dyes to polymers or particles via physical forces. Dependent on the choice of polymer or particle they deposit on cotton or synthetics. A description is given in WO 2006/055787.
  • Particularly preferred dyes are: direct violet 7, direct violet 9, direct violet 1 1 , direct violet 26, direct violet 31 , direct violet 35, direct violet 40, direct violet 41 , direct violet 51 , direct violet 99, acid blue 98, acid violet 50, acid blue 59, acid violet 17, acid black 1 , acid blue 29, solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63, disperse violet 77 and mixtures thereof.
  • Shading dye can be used in the absence of fluorescer, but it is especially preferred to use a shading dye in combination with a fluorescer, for example in order to reduce yellowing due to chemical changes in adsorbed fluorescer.
  • the detergent compositions may also optionally contain relatively low levels of organic detergent builder material.
  • organic detergent builder material examples include citrates, succinates, malonates, carboxymethyl succinates, carboxylates, polycarboxylates and polyacetyl carboxylates.
  • suitable organic builders include the higher molecular weight polymers and copolymers known to have builder properties.
  • such materials include appropriate polyacrylic acid, polymaleic acid, and polyacrylic/polymaleic acid copolymers and their salts, for example those sold by BASF under the name SOKALANTM.
  • the organic builder materials may comprise from about 0.5 to 20 wt.%, preferably from 1 to 10 wt.%, of the composition.
  • the preferred builder level is less than 10 wt.% and preferably less than 5 wt.% of the composition.
  • compositions may have their rheology modified by use of a material or materials that form a structuring network within the composition.
  • Suitable structurants include polymers, hydrogenated castor oil, microfibrous cellulose and natural based structurants for example citrus pulp fibre. Citrus pulp fibre is particularly preferred especially if lipase enzyme is included in the composition.
  • compositions may comprise visual cues of solid material that is not dissolved in the composition.
  • Preferred visual cues are lamellar cues formed from polymer film and possibly comprising functional ingredients that may not be as stable if exposed to the alkaline liquid. Enzymes and bleach catalysts are examples of such ingredients. Also perfume, particularly microencapsulated perfume. Packaging and dosing
  • liquids are supplied in multidose plastics packs with a top or bottom closure.
  • a dosing measure may be supplied with the pack either as a part of the cap or as an integrated system.

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Abstract

The invention relates to an aqueous laundry liquid detergent composition comprising:- a) from 4 to 50 wt.% of one or more surfactants; b) from 0.25 to 5 wt.% of a fatty acid; c) from 1 to 20 wt.% of triethanolamine; d) from 25 to 94 wt.% of water; wherein the weight ratio of triethanolamine (c) to fatty acid (b) is from 3:1 to 12:1.

Description

LAUNDRY COMPOSITION
Field of the Invention
This invention relates to a laundry composition. More particularly the invention relates to an aqueous liquid laundry detergent.
Background of the Invention
It is useful to include fatty acid in aqueous liquid laundry detergent compositions to provide, amongst other things foam control to the composition when in use by the consumer. However at a pH of above 7 and to 8, we have found that the fatty acid in the formulation can be unstable and lead to phase separation, especially phase separation where a separate fatty acid based phase is layered on top of the formulation.
Summary of the Invention
We have found inclusion of fatty acid up to 5 wt.% can be achieved by using
triethanolamine as a neutralising species, that by a specific minimum weight ratio of triethanolamine to fatty acid in the composition, the stability of the formulation can be improved, and the aforementioned problem solved.
According to the present invention there is provided an aqueous laundry liquid detergent composition according to claim 1.
Preferably the weight ratio of triethanolamine (c) to fatty acid (b) is from 4:1 to 1 1 :1 .
The surfactant is preferably present at a level of 5 to 40 wt.%, more preferably from 6 to 30 wt.%. A preferred surfactant system comprises the anionic surfactants linear alkylbeneze sulfonate and sodium lauryl ether sulfate as well as the nonionic surfactant alcohol ethoxylate. The fatty acid is preferably present at a level of from 0.5 to 5 wt.%, more preferably from 0.75 to 4 wt.%. The fatty acid is preferably a C6-C22 fatty acid and/or salt thereof.
Preferably the composition comprises from 0.1 to 5 wt.%, preferably from 0.25 wt.% to 4 wt.%, more preferably from 0.5 to 2.5 wt.%, of one or more sequestrants. Preferably, said sequestrants are phosphonic acids and/or salts thereof.
The phosphonic acid (or salt thereof) sequestrant is preferably present, and is preferably selected from the group consisting of: 1 -Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP); Diethylenetriaminepenta(methylenephosphonic acid) (DTPMP);
Hexamethylenediaminetetra(methylenephosphonic acid) (HDTMP);
Aminotris(methylenephosphonic acid) (ATMP);
Ethylenediaminetetra(methylenephosphonic acid) (EDTMP);
Tetramethylenediaminetetra(methylenephosphonic acid) (TDTMP); and,
Phosphonobutanetricarboxylic acid (PBTC).
The sequestrant is preferably in acid form. This means that it is a phosphonic acid.
The preferred phosphonic acid sequestrant is 1 -Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP).
If the composition comprises sulfites, they are present at a level of less than 0.1 wt.%, preferably less than 0.01 wt.%, more preferably less than 0.001 wt.%, most preferably the composition is free from sulfites.
The composition preferably comprises 0.05 to 6 wt.%, preferably from 0.1 to 5 wt.% of one or more polyester soil release polymer(s).
Preferably the composition comprises from 0.25 to 8 wt.%, preferably from 0.5 to 6 wt.% of an alkoxylated polyethyleneimine. Preferably the alkoxylated polyethyleneimine is an ethoxylated polyethyleneimine.
The composition preferably comprises from 0.0001 to 1 wt.%, preferably from 0.001 to 0.5 wt.%, more preferably from 0.001 to 0.25 wt.% of an isothiazolinone preservative. Preferably the isothiazolinone is benzisothiazolinone and/or methylisothiazolinone. A preferred aqueous laundry liquid detergent composition comprises:- a) from 6 to 30 wt.% of a surfactant system comprising linear alkylbenzene sulfonate, sodium lauryl ether sulfate, and alcohol ethoxylate;
b) from 0.5 to 5 wt.%, of a C6-C22 fatty acid and/or salt thereof;
c) from 5 to 16 wt.% of triethanolamine;
d) from 25 to 94 wt.% of water;
e) from 0.5 to 2.5 wt.% of a phosphonic acid sequestrant, preferably 1 - Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP);
f) from 0.5 to 6 wt.% of an ethoxylated polyethyleneimine;
g) from 0.1 to 5 wt.% of one or more polyester soil release polymer(s);
h) from 0.001 to 0.25 wt.% of a benzisothiazolinone and/or methylisothiazolinone preservative,
and has a pH of from above 7.0 to 8.0.
The aqueous liquid may preferably comprise one or more hydrophobically modified alkali swellable emulsion (HASE) copolymers, which may be linear in nature or crosslinked.
Detailed Description of the Invention
Surfactants
The composition comprises surfactant at a level of from 4 to 50 wt.%. Preferably surfactant is included at a level of from 5 to 40 wt.%, more preferably from 6 to 30 wt.%. The surfactant system may comprise one or more anionic, nonionic, cationic and amphoteric (zwitterionic) surfactants.
Suitable anionic surfactant compounds which may be used can be salts of organic sulfates and sulfonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals.
Examples of suitable synthetic anionic surfactant compounds are alkyl sulfates, especially those obtained by sulfating higher Cs to C18 alcohols, produced for example from tallow or coconut oil, alkyl C9 to C20 benzene sulfonates, particularly linear secondary alkyl C10 to C15 benzene sulfonates; and alkyl glyceryl ether sulfates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum.
The surfactant preferably comprises anionic surfactant. Preferred anionic surfactant compounds comprise Cn to C15 linear alkyl benzene sulfonate, and C10 to Cis alkyl sulfate ethoxylated with an average of 1 to 3 EO.
Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide. Specific nonionic detergent compounds are C6 to C22 alkyl phenol-ethylene oxide condensates, generally 5 to 25 EO, i.e. 5 to 25 units of ethylene oxide per molecule, and the condensation products of aliphatic Cs to C18 primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 40 EO.
The nonionic surfactant preferably comprises alcohol ethoxylate. The alcohol ethoxylates are formed from the reaction of primary or secondary alcohols with ethylene oxide.
Typically an aliphatic Cs to C18 primary or secondary linear or branched alcohol is reacted with ethylene oxide in the required molar amount to produce the alcohol ethoxylate.
Preferred alcohol ethoxylates have from 2 to 40, preferably from 3 to 30, more preferably from 5 to 20 ethylene oxide units attached to the aliphatic chain.
Other surfactants such as amphoteric (zwitterionic) and cationic surfactants may also be present.
A preferred surfactant system comprises the anionic surfactants linear alkylbeneze sulfonate and sodium lauryl ether sulfate as well as the nonionic surfactant alcohol ethoxylate. Preferably the surfactant system comprises Cn to C15 linear alkyl benzene sulfonate, C10 to C18 alkyl sulfate ethoxylated with an average of 1 to 3 EO, and an ethoxylated alcohol which is a Cs to Cis alcohol ethoxylated with from 5 to 20 moles of EO. Fatty Acid
As described herein, the term fatty acid includes the free fatty acid as well as neutralised salts thereof. The fatty acid is present at a level of from 0.25 to 5 wt.%. Preferably, the fatty acid is present at a level of from 0.5 to 5 wt.%, more preferably from 0.75 to 4 wt.%. The fatty acid is preferably a C6-C22 fatty acid and/or salt thereof. For the purposes of interpreting the level of surfactant present in the formulation, fatty acid and their salts are not included in the level of surfactant.
Triethanolamine
The composition comprises from 1 to 20 wt.%, preferably from 2 to 18 wt.%, more preferably from 4 to 16 wt.%, of triethanolamine. Further preferred levels of
triethanolamine may range from 5 to 16 wt.%, and 6 to 16 wt.%.
Triethanolamine is an alkanolamine, and is present to neutralise the acids present in the formulation and to provide the correct pH of the composition.
The composition preferably has a pH of between 7 to 8.
If other alkanolamines are present, then the weight ratio of triethanolamine to the sum of other alkanolamines is greater than 12:1. Preferably the weight ratio of triethanolamine to the sum of other alkanolamines is greater than 16:1 , more preferably at least than 20:1 . It is preferred that triethanolamine is the sole alkanolamine present, and most preferably triethanolamine is the sole neutralising species present in the formulation. It is preferred if monoethanolamine and any alkali metal (or salt version thereof) is absent from the formulation. Aqueous composition
The composition is an aqueous laundry liquid. Water is present at a level of from 25 to 94 wt.%.
The aqueous composition can take the form of an isotropic liquid, or it can be a structured liquid using an external structurant. Additional preferred ingredients
Sequestrant
The composition comprises from 0.1 to 5 wt.%, preferably from 0.25 to 4 wt.%, more preferably from 0.5 to 2.5 wt.% of one or more sequestrants.
A preferred sequestrant is a phosphonic acid or a salt thereof.
The phosphonic acid (or salt thereof) sequestrant is preferably selected from the group consisting of: 1 -Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP);
Diethylenetriaminepenta(methylenephosphonic acid) (DTPMP);
Hexamethylenediaminetetra(methylenephosphonic acid) (HDTMP);
Aminotris(methylenephosphonic acid) (ATMP);
Ethylenediaminetetra(methylenephosphonic acid) (EDTMP);
Tetramethylenediaminetetra(methylenephosphonic acid) (TDTMP); and,
Phosphonobutanetricarboxylic acid (PBTC).
It is preferable that the sequestrant is added to the formulation in acid form.
Preferred phosphonic acid sequestrants are 1 -Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP), commercially available as Dequest® 2010; and
Diethylenetriaminepenta(methylenephosphonic acid) (DTPMP), commercially available as Dequest® 2066. The most preferred sequestrant is 1 -Hydroxyethylidene-1 ,1 - diphosphonic acid (HEDP). Sulfites
If the composition comprises sulfites (for example sodium sulfite), then they are present at a level of less than 0.1 wt.%, preferably less than 0.01 wt.%, more preferably less than 0.001 wt.%. It is most preferred that the composition is free from sulfites. Soil release polymer
The composition may optionally, but preferably comprise from 0.05 to 6 wt.%, preferably from 0.1 to 5 wt.% of one or more polyester soil release polymer(s). Suitable polyester based soil release polymers are described in WO 2014/029479 and WO 2016/005338. Alkoxylated polvethylenimine
The composition preferably comprises from 0.25 to 8 wt.%, preferably from 0.5 to 6 wt.% of an alkoxylated polyethyleneimine. Another preferred level is from 1 to 4 wt.%. The polyethyleneimine may be linear or branched. It may be branched to the extent that it is a dendrimer. The alkoxylation may typically be ethoxylation or propoxylation, or a mixture of both. Where a nitrogen atom is alkoxylated, a preferred average degree of alkoxylation is from 10 to 30, preferably from 15 to 25. A preferred material is ethoxylated polyethyleneimine, with an average degree of ethoxylation being from 10 to 30 preferably from 15 to 25, where a nitrogen atom is ethoxylated.
Preservative
It is preferred that the composition comprises a preservative. Preferably the composition comprises from 0.0001 to 1 wt.%, preferably from 0.001 to 0.5 wt.%, more preferably from 0.001 to 0.25 wt.% of a preservative.
Preferably the composition comprises from 0.0001 to 1 wt.%, preferably from 0.001 to 0.5 wt.%, more preferably from 0.001 to 0.25 wt.% of an isothiazolinone preservative. The preferred isothiazolinone preservatives are benzisothiazolinone and/or
methylisothiazolinone. These are commercially available as Proxel® GXL and Neolone® 950.
Thickening polymer
The composition may comprise a thickening polymer. If it does, then preferably the thickening polymer comprises a hydrophobically modified alkali swellable emulsion
(HASE) copolymer. The copolymer may be linear in nature or crosslinked. If present, then preferably the thickening polymer is present at a level of from 0.1 to 5 wt.%.
Hydrophobically modified alkali swellable emulsion (HASE) copolymers are known as synthetic associative thickeners. These copolymers typically contain a backbone comprising a major part of residues of randomly distributed methacrylic acid (MAA) and ethylacrylate (EA) monomers. Inserted into this backbone are a small proportion of hydrophobically modified groups, usually less than 3 mol%. The monomers to form these hydrophobic groups are sometimes referred to as surfmers or associative monomers. Due to its structure, the copolymer, when dissolved in an alkaline aqueous liquid, induces a variety of interacting forces such as hydrophobic, hydrogen bonding, electrostatic, etc and this modifies the rheology of the liquid. It is further known that the HASE copolymers and their thickening behaviour may be further modified by use of crosslinkers. HASE copolymers are usually synthesized via emulsion polymerization.
Preferred hydrophobically modified alkali swellable emulsion (HASE) copolymers are made up of the addition polymerisation of: a) unsaturated diacid or an unsaturated cyclic anhydride precursor of such an ethylenically unsaturated diacid; b) acrylic acid or methacrylic acid; c) C-i-Cs alkyl ester of acrylic acid or methacrylic acid; and, d) a surfmer which is a hydrophobic material which is an unsaturated alkoxylated ester, preferably with 15 to 35 alkoxy groups and an alkyl chain length of > 10 carbon atoms. The copolymer may additionally comprise a crosslinking agent to make a crosslinked thickening polymer.
Fluorescer
The composition may optionally, but preferably comprise a fluorescer. If present, then preferably the composition comprises from 0.005 to 2 wt.%, preferably from 0.01 to 1 wt.%, more preferably from 0.1 to 0.5 wt.% of a fluorescer.
Preferred fluorescers are diamino stilbene disulfonic acid fluorescers. The fluorescer is preferably of the diamino stilbene disulfonic acid cyanuric chloride type. In these materials, the diamino stilbene disulfonic acid is reacted with cyanuric chloride to provide the fluorescer material. An example of a preferred fluorescer is Tinopal® 5BM-GX available from BASF. Other ingredients
The composition may further comprise one of more of the following ingredients:
structurants, foam boosting agents, bactericides, pH buffering agents, polyelectrolytes, anti-shrinking agents, anti-wrinkle agents, anti-oxidants, sunscreens, anti-corrosion agents, drape imparting agents, anti-static agents, ironing aids, colorants, pearlisers, opacifiers, and shading dye.
Hydrotrope
The liquid detergent composition may optionally include a hydrotrope, which can prevent liquid crystal formation. The addition of the hydrotrope thus aids the clarity/transparency of the composition. Suitable hydrotropes include but are not limited to propylene glycol and glycerol.
Enzymes
The detergent composition may comprise an effective amount of at least one enzyme selected from the group comprising, pectate lyase, protease, amylase, cellulase, lipase, mannanase. Advantageously it comprises at least 2 of this group of enzymes, more advantageously at least 3 and most advantageously at least 4 of the enzymes from this group.
Enzyme Stabilizers
Any enzyme present in the composition may be stabilized using conventional stabilizing agents, e.g., a polyol for example propylene glycol or glycerol, a sugar or sugar alcohol, lactic acid, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative for example 4-formylphenyl boronic acid, and the composition may be formulated as described in e.g. WO 92/19709 and WO 92/19708.
Lignin compounds
When a lipase enzyme is included a lignin compound may be used in the composition in an amount that can be optimised by trial and error. Lignin is a component of all vascular plants, found mostly between cellular structures but also within the cells and in the cell walls.
Preferably the lignin compound comprises a lignin polymer and more preferably it is a modified lignin polymer. A modified lignin polymer as used herein is lignin that has been subjected to a chemical reaction to attach chemical moieties to the lignin covalently. The attached chemical moieties are preferably randomly substituted.
Bleach Catalyst
Compositions may comprise a weight efficient bleach system. Such systems typically do not utilise the conventional percarbonate and bleach activator approach. An air bleach catalyst system is preferred. Suitable complexes and organic molecule (ligand) precursors for forming complexes are available to the skilled worker, for example, from: WO 98/39098; WO 98/39406, WO 97/48787, WO 00/29537; WO 00/52124, and WO 00/60045, incorporated by reference. An example of a preferred catalyst is a transition metal complex of MeN4Py ligand (N,N-bis(pyridin-2-yl-methyl)-1 -,1 -bis(pyridin- 2-yl)-1 -aminoethane). Suitable bispidon catalyst materials and their action are described in WO 02/48301. The bleach catalyst may be encapsulated to reduce interaction with other components of the liquid during storage.
Photobleaches may also be employed. A "photobleach" is any chemical species that forms a reactive bleaching species on exposure to sunlight, and preferably is not permanently consumed in the reaction. Preferred photo-bleaches include singlet oxygen photo-bleaches and radical photo-bleaches. Suitable singlet oxygen photo-bleaches may be selected from, water soluble phthalocyanine compounds, particularly metallated phthalocyanine compounds where the metal is Zn or AI-Z1 where Z1 is a halide, sulphate, nitrate, carboxylate, alkanolate or hydroxyl ion. Preferably the phthalocyanin has 1 -4 SO3X groups covalently bonded to it where X is an alkali metal or ammonium ion. Such compounds are described in WO 2005/014769 (Ciba).
When present, the bleach catalyst is typically incorporated at a level of about 0.0001 to about 10 wt.%, preferably about 0.001 to about 5 wt.% Perfume
The composition may optionally, but preferably comprise a perfume. The perfume may be present as a free oil, or it may be an encapsulated perfume. A preferred level of inclusion of perfume is from 0.1 to 3 wt.%. When the composition is used at very low levels of product dosage, it is advantageous to ensure that perfume is employed efficiently.
A particularly preferred way of ensuring that perfume is employed efficiently is to use an encapsulated perfume. Use of a perfume that is encapsulated reduces the amount of perfume vapour that is produced by the composition before it is diluted. This is important when the perfume concentration is increased to allow the amount of perfume per wash to be kept at a reasonably high level.
It is even more preferable that the perfume is not only encapsulated but also that the encapsulated perfume is provided with a deposition aid to increase the efficiency of perfume deposition and retention on fabrics. The deposition aid is preferably attached to the encapsulate by means of a covalent bond, entanglement or strong adsorption, preferably by a covalent bond or entanglement. Shading dyes
Shading dye can be used to improve the performance of the compositions. Preferred dyes are violet or blue. It is believed that the deposition on fabrics of a low level of a dye of these shades, masks yellowing of fabrics. A further advantage of shading dyes is that they can be used to mask any yellow tint in the composition itself.
Suitable and preferred classes of dyes are discussed below. Direct Dyes:
Direct dyes (otherwise known as substantive dyes) are the class of water soluble dyes which have an affinity for fibres and are taken up directly. Direct violet and direct blue dyes are preferred.
Preferably bis-azo or tris-azo dyes are used. Preferred dyes are direct violet 7, direct violet 9, direct violet 1 1 , direct violet 26, direct violet 31 , direct violet 35, direct violet 40, direct violet 41 , direct violet 51 , and direct violet 99. Bis-azo copper containing dyes for example direct violet 66 may be used. The benzidene based dyes are less preferred. Preferably the direct dye is present at 0.000001 to 1 wt.% more preferably 0.00001 wt.% to 0.0010 wt.% of the composition.
In another embodiment the direct dye may be covalently linked to the photo-bleach, for example as described in WO 2006/024612.
Acid dyes:
Cotton substantive acid dyes give benefits to cotton containing garments. Preferred dyes and mixes of dyes are blue or violet. Preferred acid dyes are azine dyes and non-azine dyes. Preferred azine dyes are: acid blue 98, acid violet 50, and acid blue 59, more preferably acid violet 50 and acid blue 98. Other preferred non-azine acid dyes are acid violet 17, acid black 1 and acid blue 29.
Preferably the acid dye is present at 0.0005 wt.% to 0.01 wt.% of the formulation.
Hydrophobic dyes:
The composition may comprise one or more hydrophobic dyes selected from
benzodifuranes, methine, triphenylmethanes, napthalimides, pyrazole, napthoquinone, anthraquinone and mono-azo or di-azo dye chromophores. Hydrophobic dyes are dyes which do not contain any charged water solubilising group. Hydrophobic dyes may be selected from the groups of disperse and solvent dyes. Blue and violet anthraquinone and mono-azo dye are preferred.
Preferred dyes include solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63 and disperse violet 77.
Preferably the hydrophobic dye is present at 0.0001 wt.% to 0.005 wt.% of the
formulation. Basic dyes:
Basic dyes are organic dyes which carry a net positive charge. They deposit onto cotton. They are of particular utility for used in composition that contain predominantly cationic surfactants. Dyes may be selected from the basic violet and basic blue dyes listed in the Colour Index International.
Preferred examples include triarylmethane basic dyes, methane basic dye, anthraquinone basic dyes, basic blue 16, basic blue 65, basic blue 66, basic blue 67, basic blue 71 , basic blue 159, basic violet 19, basic violet 35, basic violet 38, basic violet 48; basic blue 3, basic blue 75, basic blue 95, basic blue 122, basic blue 124, basic blue 141 .
Reactive dyes:
Reactive dyes are dyes which contain an organic group capable of reacting with cellulose and linking the dye to cellulose with a covalent bond. They deposit onto cotton. Preferably the reactive group is hydrolysed or reactive group of the dyes has been reacted with an organic species for example a polymer, so as to the link the dye to this species. Dyes may be selected from the reactive violet and reactive blue dyes listed in the Colour Index International.
Preferred examples include reactive blue 19, reactive blue 163, reactive blue 182 and reactive blue, reactive blue 96.
Dye conjugates:
Dye conjugates are formed by binding direct, acid or basic dyes to polymers or particles via physical forces. Dependent on the choice of polymer or particle they deposit on cotton or synthetics. A description is given in WO 2006/055787.
Particularly preferred dyes are: direct violet 7, direct violet 9, direct violet 1 1 , direct violet 26, direct violet 31 , direct violet 35, direct violet 40, direct violet 41 , direct violet 51 , direct violet 99, acid blue 98, acid violet 50, acid blue 59, acid violet 17, acid black 1 , acid blue 29, solvent violet 13, disperse violet 27 disperse violet 26, disperse violet 28, disperse violet 63, disperse violet 77 and mixtures thereof. Shading dye can be used in the absence of fluorescer, but it is especially preferred to use a shading dye in combination with a fluorescer, for example in order to reduce yellowing due to chemical changes in adsorbed fluorescer.
Builders
The detergent compositions may also optionally contain relatively low levels of organic detergent builder material. Examples include citrates, succinates, malonates, carboxymethyl succinates, carboxylates, polycarboxylates and polyacetyl carboxylates.
Other suitable organic builders include the higher molecular weight polymers and copolymers known to have builder properties. For example, such materials include appropriate polyacrylic acid, polymaleic acid, and polyacrylic/polymaleic acid copolymers and their salts, for example those sold by BASF under the name SOKALAN™.
If utilized, the organic builder materials may comprise from about 0.5 to 20 wt.%, preferably from 1 to 10 wt.%, of the composition. The preferred builder level is less than 10 wt.% and preferably less than 5 wt.% of the composition. External Structurants
The compositions may have their rheology modified by use of a material or materials that form a structuring network within the composition. Suitable structurants include polymers, hydrogenated castor oil, microfibrous cellulose and natural based structurants for example citrus pulp fibre. Citrus pulp fibre is particularly preferred especially if lipase enzyme is included in the composition.
Visual Cues
The compositions may comprise visual cues of solid material that is not dissolved in the composition. Preferred visual cues are lamellar cues formed from polymer film and possibly comprising functional ingredients that may not be as stable if exposed to the alkaline liquid. Enzymes and bleach catalysts are examples of such ingredients. Also perfume, particularly microencapsulated perfume. Packaging and dosing
Preferably the liquids are supplied in multidose plastics packs with a top or bottom closure. A dosing measure may be supplied with the pack either as a part of the cap or as an integrated system. The invention will now be further described with reference to the following non-limiting examples.

Claims

1 . An aqueous laundry liquid detergent composition comprising:- a) from 4 to 50 wt.% of one or more surfactants;
b) from 0.25 to 5 wt.%, preferably from 0.5 to 5 wt.%, more preferably from 0.75 to 4 wt.%, of a fatty acid;
c) from 1 to 20 wt.% preferably from 2 to 18 wt.%, more preferably from 4 to 16 wt.% of triethanolamine;
d) from 25 to 94 wt.% of water;
wherein the weight ratio of triethanolamine (c) to fatty acid (b) is from 3:1 to 12:1 , preferably from 4:1 to 1 1 :1 and the pH of the composition is from above 7.0 and to 8.0.
2. A composition according to claim 1 , wherein the surfactant is present at a level of 5 to 40 wt.%, preferably from 6 to 30 wt.%, and wherein the surfactant comprises the anionic surfactants: linear alkylbenzene sulfonate and sodium lauryl ether sulfate, and a nonionic surfactant: alcohol ethoxylate.
3. A composition according to claim 1 or claim 2, wherein the fatty acid is a C6-C22 fatty acid and/or salt thereof.
4. A composition according to any preceding claim, comprising from 0.1 to 5 wt.%, preferably from 0.25 wt.% to 4 wt.%, more preferably from 0.5 to 2.5 wt.%, of one or more sequestrants, said sequestrants are preferably phosphonic acids and/or salts thereof.
5. A composition according to claim 4, wherein the sequestrant is selected from the group consisting of the following phosphonic acids and salts thereof: 1 - Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP);
Diethylenetriaminepenta(methylenephosphonic acid) (DTPMP);
Hexamethylenediaminetetra(methylenephosphonic acid) (HDTMP);
Aminotris(methylenephosphonic acid) (ATMP);
Ethylenediaminetetra(methylenephosphonic acid) (EDTMP);
Tetramethylenediaminetetra(methylenephosphonic acid) (TDTMP); and,
Phosphonobutanetricarboxylic acid (PBTC).
6. A composition according to claim 5, wherein the sequestrant is in acid form.
7. A composition according to claim 6, wherein the sequestrant is 1 - Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP).
8. A composition according to any preceding claim, wherein if the composition
comprises sulfites, they are present at a level of less than 0.1 wt.%, preferably less than 0.01 wt.%, more preferably less than 0.001 wt.%, most preferably the composition is free from sulfites.
9. A composition according to any preceding claim, wherein the composition
comprises from 0.05 to 6 wt.%, preferably from 0.1 to 5 wt.% of one or more polyester soil release polymer(s).
10. A composition according to any preceding claim, wherein the composition
comprises from 0.25 to 8 wt.%, preferably from 0.5 to 6 wt.% of an alkoxylated polyethyleneimine.
1 1 . A composition according to claim 10, wherein the alkoxylated polyethyleneimine is an ethoxylated polyethyleneimine.
12. A composition according to any preceding claim, wherein the composition
comprises from 0.0001 to 1 wt.%, preferably from 0.001 to 0.5 wt.%, more preferably from 0.001 to 0.25 wt.% of an isothiazolinone preservative.
13. A composition according to any claim 12, wherein the isothiazolinone is
benzisothiazolinone and/or methylisothiazolinone.
14. An aqueous laundry liquid detergent composition according to claim 1 comprising:- a) from 6 to 30 wt.% of a surfactant system comprising linear alkylbenzene sulfonate, sodium lauryl ether sulfate, and alcohol ethoxylate;
b) from 0.5 to 5 wt.%, of a C6-C22 fatty acid and/or salt thereof;
c) from 5 to 16 wt.% of triethanolamine;
d) from 25 to 94 wt.% of water; from 0.5 to 2.5 wt.% of a phosphonic acid sequestrant, preferably 1 -
Hydroxyethylidene-1 ,1 -diphosphonic acid (HEDP);
from 0.5 to 6 wt.% of an ethoxylated polyethyleneimine;
from 0.1 to 5 wt.% of one or more polyester soil release polymer(s); from 0.001 to 0.25 wt.% of a benzisothiazolinone and/or methylisothiazolinone preservative,
and wherein the pH of the composition is from above 7.0 and to 8.0.
15. A composition according to any preceding claim, further comprising one of more hydrophobically modified alkali swellable emulsion (HASE) copolymers, which may be linear in nature or crosslinked.
PCT/EP2017/062561 2016-05-27 2017-05-24 Laundry composition WO2017202922A1 (en)

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WO2021151852A1 (en) 2020-01-29 2021-08-05 Unilever Ip Holdings B.V. A home care composition comprising dehydroacetic acid
US11248192B2 (en) 2019-01-22 2022-02-15 Ecolab Usa Inc. Polymer blend to stabilize highly alkaline laundry detergent

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EP2794832A1 (en) * 2011-12-20 2014-10-29 Unilever Plc. Isotropic liquid detergents comprising soil release polymer

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US11248192B2 (en) 2019-01-22 2022-02-15 Ecolab Usa Inc. Polymer blend to stabilize highly alkaline laundry detergent
US11773349B2 (en) 2019-01-22 2023-10-03 Ecolab Usa Inc. Polymer blend to stabilize highly alkaline laundry detergent
US12104142B2 (en) 2019-01-22 2024-10-01 Ecolab Usa Inc. Polymer blend to stabilize highly alkaline laundry detergent
WO2021151852A1 (en) 2020-01-29 2021-08-05 Unilever Ip Holdings B.V. A home care composition comprising dehydroacetic acid

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