CN115023487A - Home care compositions comprising dehydroacetic acid - Google Patents

Home care compositions comprising dehydroacetic acid Download PDF

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CN115023487A
CN115023487A CN202180011028.3A CN202180011028A CN115023487A CN 115023487 A CN115023487 A CN 115023487A CN 202180011028 A CN202180011028 A CN 202180011028A CN 115023487 A CN115023487 A CN 115023487A
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salt
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S·阿帕沃
S·马哈帕特拉
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Unilever IP Holdings BV
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    • 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
    • C11D3/2096—Heterocyclic compounds
    • 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
    • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)

Abstract

The present invention relates to a home care composition comprising dehydroacetic acid, a surfactant and an organic acid or salt thereof comprising citric acid or salt thereof.

Description

Home care compositions comprising dehydroacetic acid
Technical Field
The present invention relates to a home care composition comprising dehydroacetic acid (DHA).
Background
In many cases, consumers use home care compositions in their daily activities, such as laundry and home cleaning. For example, to care for their fabrics, they often prefer to use home care compositions, e.g., fabric washing compositions, fabric conditioning compositions in the wash. Also, to maintain the surrounding environment, they tend to use home care compositions, e.g., hard surface cleaning compositions, during home cleaning activities. Household cleaning includes cleaning hard surfaces, e.g., dishes, sinks, platforms, kitchen countertops, tiles, floors, toilets, cabinets, doors, machines such as dishwashers, washing machines.
Typically, surfaces (e.g., fabrics and hard surfaces) are treated by applying the household care composition in neat or diluted form, typically followed by cleaning the surface with a cleaning implement, optionally rinsing the surface; and drying the surface for cleaning. The surface may be cleaned by using a suitable means (e.g., brush, sanding, sponge, paper, cloth, wet wipes), by hand, and using a cleaning machine such as a washing machine. The rinsing step (if performed) may typically be performed one or more times by rinsing the surface with water; and the drying step may be performed by using a machine or by simply exposing the surface to air. For example, laundry washing involves cleaning fabrics by applying the fabric washing composition in neat or diluted form, rinsing the fabrics with water and drying by exposing them to air. Furthermore, for example, hard surfaces such as toilets and floors are often cleaned by applying thereto a hard surface cleaning composition in neat or diluted form, and then immediately or after a certain time period in a suitable manner; and optionally, but typically, cleaning is performed by subsequently rinsing the hard surface with water. In some cases, hard surfaces can also be cleaned by applying the composition to the surface and leaving it there.
US2019055498 discloses a natural laundry detergent comprising an emulsifier in an amount of from about 20% to about 40% by weight of the composition, a natural surfactant in an amount of from about 3.0% to about 23% by weight of the composition, water in an amount of less than about 60% by weight of the composition, a saponified oil in an amount of from about 0.50% to about 10.5% by weight of the composition, an organic chelating agent in an amount of from about 0.10% to about 2.5% by weight of the composition, one or more preservatives in an amount of from about 0.10% to about 2.0% by weight of the composition, and a polymeric thickening component in an amount of from about 0.05% to about 1.0% by weight of the composition.
WO 2002/097020 discloses a germicidal liquid detergent composition comprising: a) from 1% to 50% by weight of the total composition of one or more surfactants selected from any one of the following surfactant types: anionic, nonionic, cationic and amphoteric surfactants; b) from 0.01% to 5% by weight of the total composition of at least one nonionic, non phenolic antimicrobial agent selected from the group consisting of: benzoic acid, sorbic acid, trimethyldodecenol (commonly known as "farnesol"), dehydroacetic acid and salts thereof; c) from 0% to 10% by weight of the total composition of at least one aromatic sulphonate hydrotrope selected from: benzene sulfonate, cumene sulfonate, xylene sulfonate and toluene sulfonate; d) from 0% to 20% by weight of the total composition of a water-soluble hydroxyl-containing solvent selected from the group consisting of monohydric alcohols, polyhydric alcohols and glycol ethers of the general formula R- (O-R1) n-OH (wherein R and R1 are alkyl groups, which may be the same or different, containing from 1 to 4 carbon atoms, and n is an integer from 1 to 3); and e) water. The sum of components "c" and "d" is present in a range of 0.5% to 30% by weight of the total composition.
DHA is an effective agent, but can yellow when used in liquid home care compositions (e.g., liquid laundry and liquid dishwashing compositions). This yellowing can lead to poor product aesthetics and methods to reduce this yellowing are highly desirable.
Despite the prior art, there is still a need for improved systems for liquid home care compositions, in particular for liquid home care compositions comprising DHA and exhibiting reduced yellowing.
Accordingly, and in a first aspect, there is provided a liquid home care composition comprising dehydroacetic acid, an anionic surfactant and an organic acid or salt thereof (comprising citric acid or salt thereof). The home care composition has been found to exhibit reduced yellowing.
Summary of The Invention
In a first aspect, the present invention relates to a liquid household care composition comprising
a)0.001 to 2% by weight of dehydroacetic acid,
b)3 to 30 wt% of an anionic surfactant; and
c)0.2 to 5% by weight of an organic acid or salt thereof, including citric acid or salt thereof.
Detailed Description
Any feature of one aspect of the invention may be used in any other aspect of the invention. The term "comprising" means "including", but not necessarily "consisting of … … or" consisting of … … ". In other words, the listed steps or options need not be exhaustive. Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts of material or conditions of reaction, physical properties of materials and/or use are to be understood as modified by the word "about". Numerical ranges expressed in the format "from x to y" are understood to include x and y. When multiple preferred ranges are described in the format of "x to y" for a particular feature, it is to be understood that all ranges combining the different endpoints are also contemplated. Amounts used herein are expressed as weight percent based on the total weight of the composition and are abbreviated as "wt%", unless otherwise indicated. The use of any and all examples, or exemplary language, e.g., "such as" provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed.
In a first aspect, the present invention relates to a liquid home care composition (the composition) comprising dehydroacetic acid, an anionic surfactant and an organic acid or salt thereof, wherein the organic acid or salt thereof comprises citric acid or salt thereof.
Preferably, home care compositions refer to compositions suitable for use in maintaining the home and surrounding environment (including fabric care) through liquid laundry compositions; and maintaining the ambient environment, e.g., ware, dishes, including surfaces, with a liquid dishwashing composition, e.g., a hand dishwashing composition.
Dehydroacetic acid
The composition comprises 0.001 to 2 wt.%, preferably 0.005 to 1.5 wt.%, more preferably 0.01 to 1 wt.%, even more preferably 0.05 to 1 wt.%, even more preferably 0.1 to 0.5 wt.%, still more preferably 0.2 to 0.5 wt.%, yet more preferably 0.2 to 0.4 wt.%, still more preferably 0.2 to 0.3 wt.% of dehydroacetic acid.
Anionic surfactants
The composition comprises from 3 to 30 wt%, preferably from 4 to 27 wt%, more preferably from 5 to 25 wt%, even more preferably from 7 to 23 wt%, even more preferably from 9 to 21 wt%, yet more preferably from 12 to 18 wt%, yet more preferably from 12 to 16 wt%, yet more preferably from 12 to 15 wt% of a surfactant.
Preferably, the anionic surfactant is selected from Linear Alkylbenzene Sulphonate (LAS), alkoxylated primary alcohol sulphate, non-alkoxylated primary alcohol sulphate, olefin sulphonate, ester sulphonate and secondary alcohol sulphate.
Particularly preferably, the anionic surfactant useful in the composition is LAS having an alkyl chain containing from 8 to 20 carbon atoms. Typically, the counter ion of the anionic surfactant is an alkali metal, typically sodium, although other amine-based counter ions may also be present in place of the alkali metal. A preferred LAS that can be used as an anionic surfactant in the composition is the sodium salt of linear alkyl benzene sulphonic acid having an alkyl chain length of 8 to 15, more preferably 12 to 14 carbon atoms (Na-LAS).
Alternatively, the anionic surfactant is an alkoxylated primary alcohol sulfate. It is generally represented by the formula RO (C) 2 H 4 O) x SO 3 - M + Wherein R is a saturated or unsaturated alkyl chain having from 10 to 22 carbon atoms, M is a cation which renders the compound water-soluble, especially an alkali metal, ammonium or substituted ammonium cation, and x is on average from 1 to 15. Preferably, R is an alkyl chain having 12 to 16 carbon atoms, M is sodium and x averages 1 to 9, preferably x is 1 to 7. An example of an alkoxylated primary alcohol sulfate is Sodium Lauryl Ether Sulfate (SLES). Can be used as the middle part of a compositionPreferred alkoxylated primary alcohol sulfates of the ionic surfactant are SLES having an average of from 1 to 5 moles of Ethylene Oxide (EO) units per mole, more preferably from 1 to 3 EO units per mole.
Alternatively, the anionic surfactant is a non-alkoxylated primary alcohol sulfate. A preferred example of a non-alkoxylated primary alcohol sulfate that may be used as an anionic surfactant in the composition is sodium lauryl sulfate.
Alternatively, the anionic surfactant is a water-soluble alkali metal salt of an organic sulfuric acid having an alkyl group containing from 8 to 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl groups. Examples include sodium and potassium alkyl sulfates (especially those obtained by sulfating higher C8 to C18 alcohols, e.g., alcohols produced from tallow or coconut oil), sodium alkyl glyceryl ether sulfates (especially those ethers of higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum, ester sulfonates and alpha-olefin sulfonates).
Mixtures of any of the above anionic surfactants may also be used.
Amphoteric surfactant
Preferably, the composition further comprises an amphoteric surfactant. Preferably, the amphoteric surfactant is selected from the group consisting of alkyl amine oxides, alkyl betaines, alkyl amidopropyl betaines, alkyl sultaines (sultaines), alkyl glycinates, alkyl carboxyglycinates, alkyl amphoacetates, alkyl amphopropionates, alkyl amphoglycinates, alkyl amidopropyl hydroxybetaines, acyl taurates and acyl glutamates, having an alkyl group containing from about 8 to about 22 carbon atoms, the term "alkyl" being used for the alkyl portion including higher acyl groups. More preferably, the amphoteric surfactant is selected from alkylamidopropyl betaines, even more preferably cocamidopropyl betaine. The amphoteric surfactant (when included) is preferably present in an amount ranging from 0.1 to 5 wt.%, more preferably from 0.1 to 4 wt.%, even more preferably from 1 to 3 wt.%. Mixtures of any of the above materials may also be used.
Cationic surfactant
Preferably, the composition further comprises a cationic surfactant. Examples of suitable cationic surfactants include quaternary ammonium salts, wherein the ammonium salt has the general formula: r is 1 R 2 R 3 R 4 N + X - Wherein R is 1 Is C 12 -C 18 Alkyl radical, R 2 、R 3 And R 4 Each of which is independently C 1 -C 3 Alkyl and X is an inorganic anion. R 1 Preferably a straight chain alkyl group containing 14 to 16 carbon atoms, more preferably 16 carbon atoms. R 2 -R 4 Preferably methyl. The inorganic anion is preferably selected from halide, sulfate, hydrogen sulfate or OH - . Thus, for the purposes of the present invention, quaternary ammonium hydroxides are considered to be quaternary ammonium salts. More preferably, the anion is a halide or sulfate ion, most preferably chloride, bromide or sulfate ion. One specific example of a cationic surfactant is cetyltrimethylammonium bromide.
Another type of quaternary ammonium cationic surfactant is the benzalkonium halides (benzalkonium halides) class, also known as alkyldimethylbenzyl ammonium halides. The most common and preferred cationic surfactant that can be used in the composition is benzalkonium chloride, also known as alkyldimethylbenzyl ammonium chloride (ADBAC). A preferred class of benzalkonium chlorides is given in the formula below.
Figure BDA0003764643700000061
n＝8、10、12、14、16、18
The cationic surfactant (when included) is preferably present in an amount ranging from 0.1 to 5 wt%, more preferably from 0.1 to 4 wt%, even more preferably from 1 to 3 wt%.
Organic acids or salts thereof
The composition comprises an organic acid or salt thereof (comprising citric acid or salt thereof). Preferably, the organic acid or salt thereof may further comprise succinic acid, malic acid, lactic acid, tartaric acid, caproic acid, cyclohexanoic acid, heptanoic acid, caprylic acid, 4-methyloctanoic acid, nonanoic acid, decanoic acid, benzoic acid, 4-methoxybenzoic acid, and mixtures thereof. Examples of salts of organic acids include the corresponding salts of these organic acids, which are preferably formed with sodium and potassium, more preferably with sodium, e.g., trisodium citrate. More preferably, the organic acid or salt thereof may further comprise maleic acid or salt thereof. Even more preferably, the organic acid or salt thereof is selected from citric acid or salts thereof, e.g., trisodium citrate. Preferably, the composition does not comprise silver dihydrogen citrate.
The composition comprises from 0.2 to 5 wt%, preferably from 0.3 to 4 wt%, more preferably from 0.4 to 3 wt%, even more preferably from 0.5 to 3 wt%, even more preferably from 1 to 2 wt% of an organic acid or salt thereof containing citric acid or salt thereof.
The addition of an organic acid or salt thereof, such as citric acid or salt thereof, in increasing amounts may affect a physical parameter of the composition, such as the viscosity of the composition. In this case, however, a viscosity modifier, such as a glycol, may be added to the composition.
Water (W)
Preferably, the composition further comprises water in an amount ranging from 5 to 99 wt.%, more preferably 10 to 90 wt.%, even more preferably 15 to 80 wt.%, even more preferably 20 to 70 wt.%, still more preferably 30 to 65 wt.%, yet more preferably 35 to 60 wt.%, and yet more preferably 40 to 55 wt.%.
Chelating agents
Preferably, the composition further comprises one or more chelating agents. Preferably, the chelating agent comprised by the composition may be present in an amount of 0.1 to 5 wt.%, more preferably 0.25 to 4 wt.%, even more preferably 0.5 to 2.5 wt.%.
Preferred chelating agents are phosphonic acids or salts thereof. The phosphonic acid (or salt thereof) chelating agent is preferably selected from 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP; commercially available as dequest (R) 2010), diethylenetriamine penta (methylenephosphonic acid) (DTPMP; commercially available as dequest (R) 2066), hexamethylenediamine tetra (methylenephosphonic acid) (HDTMP), aminotris (methylenephosphonic Acid) (ATMP), ethylenediamine tetra (methylenephosphonic acid) (EDTMP), tetramethylenediamine tetra (methylenephosphonic acid) (TDTMP); and phosphonic butane tricarboxylic acid (PBTC).
The most preferred chelating agent is 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP). The chelating agent is preferably added to the formulation in acid form.
Hydrotrope
Preferably, the composition further comprises a hydrotrope. Hydrotropes are known to increase the solubility of surfactants in water.
Preferably, the composition comprises from 0.01 to 1 wt%, preferably from 0.05 to 0.8 wt%, more preferably from 0.1 to 0.6 wt%, even more preferably from 0.2 to 0.4 wt% of a hydrotrope.
Suitable hydrotropes that may be used include sulfonate compounds, glycols, alcohols, polyethers and mixtures thereof.
Suitable sulfonate compounds include alkali metal sulfonates attached to a benzene backbone or a diphenyl ether backbone having a straight or branched alkyl chain containing from 1 to 5 carbon atoms. In the chemical structure shown below, when R or (R1+ R2) consists of 1 to 5 carbon atoms, then the sulfonate compound functions as a hydrotrope.
Examples of sulfonate compounds that function as hydrotropes include alkylxylene sulfonates, alkylcumene sulfonates, and alkyltoluene sulfonates. Specific examples of sulfonate compounds that function as hydrotropes are Sodium Xylene Sulfonate (SXS), Sodium Cumene Sulfonate (SCS), and Sodium Toluene Sulfonate (STS). Preferred sulfonate compounds that can be used as hydrotropes in the composition are any of SXS, SCS, and STS.
Examples of suitable glycols that can be used as hydrotropes include polyethylene glycol-200, polyethylene glycol-400, monopropylene glycol. A preferred glycol useful as a hydrotrope is polyethylene glycol-200. Examples of suitable alcohols that can be used as hydrotropes include ethanol and propanol. A preferred alcohol that can be used as a hydrotrope is ethanol.
Examples of suitable polyethers that can be used as hydrotropes include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monobenzyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol mono-n-butyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether. A preferred polyether that can be used as a hydrotrope is ethylene glycol monomethyl ether.
Enzyme
Optionally, the composition further comprises an enzyme with or without a suitable enzyme stabilizer. Preferably, the composition further comprises an effective amount of at least one enzyme, with or without a suitable enzyme stabilizer. Examples of suitable enzymes include pectate lyases, proteases, amylases, cellulases, lipases, mannanases; with or without suitable stabilizers.
Preferably, the viscosity of the composition is at 25 ℃ and 21 seconds -1 May suitably be in the range of from about 200 to about 10,000 mpa.s. The shear rate is the shear rate normally applied to the liquid when poured from the bottle. The viscosity of the pourable liquid home care composition is typically from 200 to 1,500mpa.s, preferably from 100 to 800 mpa.s.
Preferably, the composition does not comprise an isothiazolinone compound. Such compounds include Methylisothiazolinone (MIT), Chloromethylisothiazolinone (CMIT), Benzisothiazolinone (BIT), Octylisothiazolinone (OIT), Dichlorooctylisothiazolinone (DCOIT) and butylbenzoisothiazolinone (BBIT).
Preferably, the composition does not contain a fatty alcohol ethoxylate surfactant. Preferably, the composition comprises 0 to 0.1 wt.% of the fatty alcohol ethoxylate.
pH of the composition
The pH of the composition ranges from 2.0 to 8.0, preferably from 2.5 to 7.5, more preferably from 3.0 to 7.0, even more preferably from 3.5 to 7.0, further more preferably from 4.0 to 7.5, still more preferably from 4.5 to 7.5, yet more preferably from 5.0 to 7.5, still further more preferably from 5.5 to 7.5, and still further more preferably from 6.0 to 6.5.
The pH of the composition can be adjusted using suitable pH adjusting agents, such as hydrochloric acid and sodium hydroxide.
Thus, the composition is preferably a liquid laundry composition comprising:
a)0.001 to 2% by weight of dehydroacetic acid,
b)3 to 30 wt% of an anionic surfactant; and
c)0.2 to 5% by weight of an organic acid or salt thereof comprising citric acid or salt thereof,
wherein the pH of the composition is in the range of 2 to 8.
Thus, the composition is preferably a liquid dishwashing composition comprising:
a)0.001 to 2% by weight of dehydroacetic acid,
b)3 to 30 wt% of an anionic surfactant; and
c)0.2 to 5% by weight of an organic acid or salt thereof comprising citric acid or salt thereof,
wherein the pH of the composition is in the range of 2 to 8.
Aromatic alcohols
Optionally, the composition further comprises an aromatic alcohol selected from the group consisting of aryl alcohols, aryloxy alcohols, and mixtures thereof. Suitable examples of aryloxy alcohols include phenoxyethanol and phenoxypropanol.
If an aromatic alcohol is used in the composition, it is preferably used in an amount ranging from 0.001 to 5 wt.%, more preferably from 0.005 to 4 wt.%, even more preferably from 0.01 to 3 wt.%, even more preferably from 0.05 to 2 wt.%, still more preferably from 0.1 to 1 wt.%.
Polymer and process for producing the same
The composition may also comprise one or more polymers. Preferably, the polymer may be of the cationic, anionic, amphoteric or nonionic type with a molecular weight above 100,000 daltons. They are known to increase the viscosity and stability of liquid compositions to enhance skin feel during and after use, and to enhance lather creaminess (lather) and lather stability.
Examples of polymers include polyvinyl alcohol, polyacrylic acid, silanes, siloxanes and mixtures thereof.
If present, the polymer is preferably present in the composition in an amount ranging from 0.001 to 10 wt.%, more preferably from 0.005 to 9 wt.%, even more preferably from 0.01 to 8 wt.%, even more preferably from 0.05 to 7 wt.%, still more preferably from 0.1 to 6 wt.%, yet more preferably from 0.5 to 5 wt.%, even further more preferably from 1 to 4 wt.%, still further more preferably from 1 to 3 wt.%.
Soil release polymers
Soil Release Polymers (SRPs) help improve soil release from fabrics by modifying the fabric surface during the laundering process. Adsorption of the SRP on the fabric surface is facilitated by the affinity between the chemical structure of the SRP and the target fiber.
The SRPs useful in the present invention can include a variety of charged (e.g., anionic) as well as uncharged monomeric units, and the structure can be linear, branched, or star-shaped. The SRP structure may also include end-capping groups to control molecular weight or to modify polymer properties, such as surface activity. Weight average molecular weight (M) of SRP w ) May suitably be in the range of from about 1000 to about 20,000, preferably in the range of from about 1500 to about 10,000.
The SRP used in the present invention may suitably be selected from copolyesters of dicarboxylic acids (e.g. adipic acid, phthalic acid or terephthalic acid), diols (e.g. ethylene glycol or propylene glycol) and polyglycols (e.g. polyethylene glycol or polypropylene glycol). The copolyester may also comprise monomeric units substituted with anionic groups, such as sulfonated isophthaloyl units. Examples of such materials include oligoesters produced by transesterification/oligomerization of poly (ethylene glycol) methyl ether, dimethyl terephthalate ("DMT"), propylene glycol ("PG"), and poly (ethylene glycol) ("PEG"); partially and fully anionic end-capped oligoesters, such as oligomers from ethylene glycol ("EG"), PG, DMT, and sodium 3, 6-dioxa-8-hydroxyoctanesulfonate; non-ionic end-capped block polyester oligomeric compounds, for example, those produced from DMT, Me-capped PEG and EG and/or PG, or a combination of DMT, EG and/or PG, Me-capped PEG and sodium dimethyl-5-sulfoisophthalate, and co-blocks of ethylene terephthalate or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate.
Other types of SRPs useful in the present invention include cellulose derivatives, e.g., hydroxyether cellulose polymers, C 1 -C 4 Alkyl celluloses and C 4 Hydroxyalkyl cellulose; polymers having poly (vinyl ester) hydrophobic segments, e.g. graft copolymers of poly (vinyl ester), e.g. C grafted onto a polyalkylene oxide backbone 1 -C 6 Vinyl esters (e.g., poly (vinyl acetate)); poly (vinyl caprolactam) and related copolymers with monomers such as vinyl pyrrolidone and/or dimethylaminoethyl methacrylate; and polyester-polyamide polymers prepared by the condensation of adipic acid, caprolactam and polyethylene glycol.
Preferred SRPs for use in the present invention include copolyesters formed by the condensation of terephthalate and a glycol (preferably 1, 2-propanediol), and also contain endcaps formed from repeat units of alkylene oxides capped with alkyl groups. Examples of such materials have a structure corresponding to general formula (I):
Figure BDA0003764643700000111
wherein R is 1 And R 2 Independently of one another are X- (OC) 2 H 4 ) n -(OC 3 H 6 ) m ；
Wherein X is C 1-4 Alkyl, and preferably methyl;
n is a number from 12 to 120, preferably from 40 to 50;
m is a number from 1 to 10, preferably from 1 to 7; and
a is a number from 4 to 9.
Since they are averages, m, n and a are not necessarily integers for the overall polymer.
Mixtures of any of the above materials may also be used.
When included, the total level of SRP may range from 0.1 to 10%, depending on the level of polymer intended for use in the final diluted composition, and is desirably from 0.3 to 7%, more preferably from 0.5 to 5% (by weight based on the total weight of the diluted composition).
Suitable soil release polymers are described in U.S. Pat. nos. 5,574,179; 4,956,447, respectively; 4,861,512, respectively; 4,702,857, respectively; WO 2007/079850 and WO2016/005271 are described in more detail. If used, the soil release polymer is typically incorporated in the liquid household care compositions herein in an amount ranging from 0.01% to 10% by weight, more preferably from 0.1% to 5% by weight.
Polymeric cleaning accelerator
In addition to the soil release polymers of the invention described above, the compositions of the invention may further contain one or more additional polymeric cleaning promoters, such as anti-redeposition polymers.
The anti-redeposition polymer stabilizes soils in the wash solution, thereby preventing soil redeposition. Soil release polymers suitable for use in the present invention include alkoxylated polyethyleneimines. The polyethyleneimine is composed of ethyleneimine units-CH 2 CH 2 NH-and in the case of branching, the hydrogen on the nitrogen is replaced by another chain of ethyleneimine units. Preferred alkoxylated polyethyleneimines for use in the present invention have a weight average molecular weight (M) of about 300 to about 10000 w ) The polyethyleneimine skeleton of (2). The polyethyleneimine backbone may be linear or branched. It may be branched to the extent that it is a dendrimer. The alkoxylation can generally be ethoxylation or propoxylation, or a mixture of both. When the nitrogen atom is alkoxylated, the preferred average degree of alkoxylation is from 10 to 30, preferably from 15 to 25 alkoxy groups per modification. Preferred materials are ethoxylated polyethyleneimines having an average degree of ethoxylation of from 10 to 30, preferably from 15 to 25, ethoxy groups per ethoxylated nitrogen atom in the polyethyleneimine backbone.
Mixtures of any of the above materials may also be used.
When included, the compositions of the present invention may preferably comprise from 0.025 to 8 wt%, more preferably from 0.5 to 6 wt% (by weight based on the total weight of the diluted composition) of one or more antiredeposition polymers, such as the alkoxylated polyethyleneimines described above.
Polymeric thickeners
The compositions of the present invention may also comprise one or more polymeric thickeners. Polymeric thickeners suitable for use in the present invention include hydrophobically modified alkali swellable emulsion (HASE) copolymers. Exemplary HASE copolymers for use in the present invention include linear or crosslinked copolymers prepared by addition polymerization of a monomer mixture comprising at least one acidic vinyl monomer, such as (meth) acrylic acid (i.e., methacrylic acid and/or acrylic acid); and at least one associative monomer. The term "associative monomer" in the context of the present invention means a monomer having an ethylenically unsaturated moiety (for addition polymerization with other monomers in the mixture) and a hydrophobic moiety. Preferred types of associative monomers include a polyoxyalkylene moiety between the ethylenically unsaturated moiety and the hydrophobic moiety. Preferred HASE copolymers for use in the present invention include linear or crosslinked copolymers prepared by addition polymerization of (meth) acrylic acid with the following monomers: (i) at least one selected from linear or branched C 8 -C 40 Alkyl (preferably straight chain C) 12 -C 22 Alkyl) polyethoxylated (meth) acrylate associative monomers; and (ii) at least one member selected from the group consisting of C 1 -C 4 Alkyl (meth) acrylates, polyacid vinyl monomers (e.g., maleic acid, maleic anhydride, and/or salts thereof), and mixtures thereof. The polyethoxylated portion of associative monomer (i) typically comprises from about 5 to about 100, preferably from about 10 to about 80, more preferably from about 15 to about 60 oxyethylene repeat units.
Mixtures of any of the above materials may also be used.
When included, the compositions of the present invention may further comprise from 0.01 to 5 wt%, more preferably from 0.1 to 3 wt% of a polymeric thickener.
Fluorescent agent
The composition may further comprise a fluorescent agent. Typically, these fluorescers are provided and used in the form of their alkali metal salts (e.g., sodium salts). The total amount of the fluorescent agent or agents used in the composition is preferably from 0.005 to 2 wt%, more preferably from 0.01 to 0.5 wt% of the composition.
Preferred classes of fluorescers are: distyrylbiphenyl compounds such as Tinopal (trademark) CBS-X; diamine stilbene disulfonic acid compounds such as Tinopal DMS pure Xtra, Tinopal5BMGX and Blankophor (trade mark) HRH, and pyrazoline compounds such as Blankophor SN.
Preferred fluorescent agents are: sodium 2 (4-styryl-3-sulfophenyl) -2H-naphtho [1,2-d ] triazole, disodium 4,4' -bis { [ (4-anilino-6- (N-methyl-N-2-hydroxyethyl) amino 1,3, 5-triazin-2-yl) ] amino } stilbene-2-2 ' disulfonate, disodium 4,4' -bis { [ (4-anilino-6-morpholin-1, 3, 5-triazin-2-yl) ] amino } stilbene-2-2 ' disulfonate, and disodium 4,4' -bis (2-sulfostyryl) biphenyl.
Dye material
The composition may further comprise a dye as disclosed in WO 17202922.
External structurants
Optionally, the composition may further comprise one or more materials that form a structured network within the composition as a rheology modifier. Suitable structurants include hydrogenated castor oil, microfibrillar cellulose and citrus pulp fibre. The presence of the external structurant can provide shear thinning rheology and can also enable materials such as encapsulation and visual cues to be stably suspended in the liquid.
Product application
Preferably, the composition may be used as such (i.e. neat) or may be diluted prior to use. The degree of dilution is generally dependent on market choice. In some markets, more concentrated products are desired, while in other markets, more dilute products are preferred. If the composition is a liquid dishwashing composition, it is typically diluted with water in a ratio of, for example, 1:1, 1:3, 1:5 and 1: 10. On the other hand, if the composition is a liquid laundry composition, it may be diluted with water in a ratio of, for example, 1:50, 1:100, 1:200 to form a wash liquor.
Optional ingredients
The composition may optionally comprise ingredients such as perfumes, colorants, foam boosters, odor absorbing materials.
Examples
To evaluate the yellowing effect, liquid laundry compositions as shown in table 1 below were first prepared.
TABLE 1
Composition (A) By weight%
Salt NaCl 2.250
Tinopal CBS-X 0.030
NaOH 0.230
Triethanolamine 0.553
Citric acid 0.147
LAS acid 2.000
Ethoxylated polyethyleneimine 0.375
Texcare SRN UL50 0.100
SLES 3EO 4.500
CAPB 1.200
Perfume 0.380
Carnival Evity 16L 0.125
Medley S204 0.053
Acid blue 80 0.003
Defoaming agent 0.001
Water (W) To 100
pH 6.0 to 7.0
To the compositions shown in table 1, DHA and trisodium citrate were added as shown in table 2.
TABLE 2
Ex. DHA Trisodium citrate
A - -
B 0.3 -
1 0.3 0.1
2 0.3 0.2
3 0.3 0.3
4 0.3 1
5 0.3 2
6 0.3 3
Images of the compositions in table 2 were taken at time 0 (i.e. immediately after their preparation) and at the end of the storage period (12 weeks at 45 ℃). All images were converted to L, a, and b data using Hunter lab Ultra scan Vis (Hunter lab Associates Laboratories inc. Color measurements are presented by Hunter lab color space L, a, and b, where L is black-white space, a is green-red space, and b is blue-yellow space. For example, a larger value of b means more yellow. The values of L, a and b at week 12 and week 0 (initial data) are shown in table 3 below.
TABLE 2
Figure BDA0003764643700000151
Path length: 0.4 cm; incubation temperature 45 deg.C

Claims (15)

1. A liquid home care composition comprising:
a)0.001 to 2% by weight of dehydroacetic acid,
b)3 to 30 wt% of an anionic surfactant; and
c)0.2 to 5% by weight of an organic acid or salt thereof comprising citric acid or salt thereof.
2. The composition of claim 1, wherein the composition further comprises an amphoteric surfactant.
3. The composition of claim 1 or 2, wherein the organic acid or salt thereof is citric acid or salt thereof.
4. The composition of any one of claims 1 to 3, wherein the organic acid salt is trisodium citrate.
5. The composition of any one of claims 1 to 4, wherein the composition comprises water in an amount of 5 to 99 wt.%.
6. The composition of any one of claims 1 to 5, wherein the composition further comprises a phosphonic acid-based chelating agent.
7. The composition of any one of claims 1 to 6, wherein the composition further comprises a hydrotrope.
8. The composition of any one of claims 1 to 7, wherein the composition further comprises an enzyme.
9. The composition according to any one of claims 1 to 8, which is at 21s -1 The viscosity measured at this point is from 100 to 800 mPas.
10. The composition according to any one of claims 1 to 9, wherein the composition does not comprise an isothiazolinone compound.
11. The composition of any one of claims 1 to 10, wherein the composition does not comprise a fatty alcohol ethoxylate.
12. The composition of any one of claims 1 to 11, wherein the pH of the composition is from 2 to 8.
13. The composition of any one of claims 1 to 11, wherein the pH of the composition is from 4.5 to 7.5.
14. A composition according to any one of claims 1 to 13, wherein the composition is a laundry liquid composition.
15. The composition of any one of claims 1 to 13, wherein the composition is a liquid dishwashing composition.
CN202180011028.3A 2020-01-29 2021-01-26 Home care compositions comprising dehydroacetic acid Pending CN115023487A (en)

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IN202021003968 2020-01-29
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PCT/EP2021/051663 WO2021151852A1 (en) 2020-01-29 2021-01-26 A home care composition comprising dehydroacetic acid

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