EP3433346A1 - Laundry detergent composition - Google Patents

Laundry detergent composition

Info

Publication number
EP3433346A1
EP3433346A1 EP17704507.7A EP17704507A EP3433346A1 EP 3433346 A1 EP3433346 A1 EP 3433346A1 EP 17704507 A EP17704507 A EP 17704507A EP 3433346 A1 EP3433346 A1 EP 3433346A1
Authority
EP
European Patent Office
Prior art keywords
laundry detergent
detergent composition
aqueous liquid
liquid laundry
composition according
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP17704507.7A
Other languages
German (de)
French (fr)
Other versions
EP3433346B1 (en
Inventor
Stephen Norman Batchelor
Jayne Michelle Bird
Andrew David Green
Clare Anne JONES
Alyn James Parry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever Global IP Ltd
Unilever IP Holdings BV
Original Assignee
Unilever PLC
Unilever NV
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 NV filed Critical Unilever PLC
Publication of EP3433346A1 publication Critical patent/EP3433346A1/en
Application granted granted Critical
Publication of EP3433346B1 publication Critical patent/EP3433346B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/94—Mixtures with anionic, cationic or non-ionic 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/83—Mixtures of non-ionic with anionic 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3723—Polyamines or polyalkyleneimines
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/04—Carboxylic acids or salts thereof
    • C11D1/06—Ether- or thioether carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/75—Amino oxides
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/90—Betaines

Definitions

  • the present invention provides an alkoxylated polyethylene imine polymer and surfactant formulation for use in domestic laundry.
  • WO2014/060235 discloses a laundry detergent composition comprising (a) nonionic surfactant, (b) anionic surfactant, (c) alkyl ether carboxylic acid or carboxylate salt thereof, and, (d) a polyglucosamine or a copolymer of glucosamine and N- acetylglucosamine; and to its use to soften fabrics.
  • the present invention provides an aqueous liquid laundry detergent composition comprising:
  • R2 is selected from saturated and mono-unsaturated C10 to C26 linear or branched alkyl chains, preferably a C12 to C20 linear alkyl chains, most preferably a
  • n is selected from: 6 to 20, preferably 7 to
  • laundry detergent composition comprises in total from 10 to 20 wt% of anionic surfactant.
  • the present invention provides a domestic method of treating a textile, the method comprising the steps of: treating a textile with from 1 g/L of an aqueous solution of the laundry detergent composition as defined in any one of the preceding claims; and,
  • the surfactant used is preferably as preferred for the composition aspects of the present invention.
  • Domestic methods are preferably conducted in a domestic washing machine or by hand washing.
  • the temperature of the wash is preferably from 285 to 313K.
  • the main wash time is preferably 5 to 30 minutes.
  • the textile is preferably an item of clothing, bedding or table cloth.
  • Preferred items of clothing are cotton containing shirts, trousers, underwear and jumpers.
  • Linear alkyl benzene sulfonate Weights of Linear alkyl benzene sulfonate are calculated as the protonated form.
  • the linear alkyl benzene sulfonate has an alkyl chain length of C8 to C15, preferably C12 to C14.
  • Linear alkyl benzene sulphonate may be obtained, by sulphonating commercially available linear alkyl benzene (LAB); suitable LAB includes low 2-phenyl LAB, such as those supplied by Sasol under the tradename IsochemĀ® or those supplied by Petresa under the tradename PetrelabĀ®, other suitable LAB include high 2-phenyl LAB, such as those supplied by Sasol under the tradename HybleneĀ®.
  • Another suitable route is alkyl benzene sulphonate that is obtained by DETAL catalyzed process, preferably having 8 to 15 carbon atoms. Other synthesis routes, such as HF, may also be suitable.
  • Ri-(OCH 2 CH2)m-OS0 3 H is C10 to C22 saturate or unsaturated linear alkyl chain, more preferably a saturated C12 to C16 linear alkyl chain, most preferably C12 linear alkyl chain (lauryl).
  • the average number of moles of ethoxylation per mole of surfactant is m, m is preferably 0.5 to 1.5.
  • Weights of alkyl ether carboxylic acid are calculated as the protonated form, R2-(OCH2CH2)n-OCH2COOH. They may be used as salt version for example sodium salt, or amine salt.
  • the alkyl chain may be linear or branched, preferably it is linear.
  • the alkyl chain may be aliphatic or contain one cis or trans double bond.
  • the alkyl chain is preferably selected from CH3(CH2)i5, CH3(CH2)i7,
  • alkyl ether carboxylic acid is most preferably of the structure:
  • Alkyl ether carboxylic acid are available from Kao (Akypo Ā®), Huntsman (EmpicolĀ®) and Clariant (Emulsogen Ā®).
  • the zwitterionic surfactant contains a linear C8 to C16 aliphatic alkyl chain and a positive and negative charged atom within the surfactant molecule.
  • Preferred zwitterionic surfactants are betaines and amine oxides.
  • the amine oxide is preferably of the structure:
  • R3 is C12-C14, most preferably C12 (lauryl).
  • Amine Oxides are available from Huntsman, for example, EmpigenĀ® OB.
  • the betaine is preferably a carbobetaine.
  • the carbobetaine is preferably selected from the structures:
  • R 4 is C12-C14, most preferably C12 (lauryl). Betaines are available from
  • the zwitterionic is most preferably a carbobetaine.
  • the aqueous liquid laundry detergent may comprise Non-ionic surfactant, preferably an alkyl ethoxylated non-ionic surfactant.
  • Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having an aliphatic hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids or amides, especially ethylene oxide either alone or with propylene oxide.
  • the preferred nonionic detergent compounds are the condensation products of aliphatic Cs to Cis primary or secondary linear or branched alcohols with ethylene oxide.
  • the alkyl ethoxylated non-ionic surfactant is a Cs to Cie primary alcohol with a mole average ethoxylation of 7EO to 9EO units.
  • the fraction (weight% of non-ionic)/(weight% of anionic surfactant) is from 0 to 0.2, more preferably 0 to 0.05. Most preferably the formulation does not contain non-ionic.
  • the aqueous liquid laundry detergent may comprises from 0 to 4wt% of further surfactants, for example thos described in "Surface Active Agents" Vol. 1 , by Schwartz & Perry,
  • alkyl sulphates especially those obtained by sulphating linear or branched Cs to Cie alcohols; soaps; alkyl (preferably methyl) ester sulphonates, and mixtures thereof.
  • the alkoxylated polyethyelene imine comprises a polyethyleneimine backbone wherein the modification of the polyethyleneimine backbone is intended to leave the polymer without quaternisation.
  • Such materials may be represented as PEI(X)YAO where X represents the molecular weight of the unmodified PEI and Y represents the average moles of alkoxylation (AO) per available NH in the unsubstituted polyethyleneimine backbone.
  • Y is preferably from 7 to 40 more preferably it is in the range of 16 to 26, most preferably 18 to 22.
  • X is selected to be from about 300 to about 10000 weight average molecular weight and is preferably about 600.
  • the alkoxylation is preferably selected from ethoxylation or propoxylation, or a combination of the two, Ethoxylation is most preferred.
  • the alkoxy chains may be capped with groups selected from: H; CH3; SO3 " ; CH2COO " ; PO3 2" ; C2H5; n-propyl, i-propyl; n-butyl; t-butyl; and, sulfosuccinate, most preferably H.
  • alkoxylated PEI is PEI(600)20EO.
  • Terephthalate Polyester Soil Release Polymer comprise polymers of aromatic dicarboxylic acids and alkylene glycols (including polymers containing polyalkylene glycols), as described in WO2009/153184, EP2692842 and WO2014/019903.
  • Terephthalate Polyester Soil Release Polymer examples include the REPEL-O-TEXĀ® line of polymers supplied by Rhodia, including REPEL-O-TEXĀ® SRP6 and REPEL-O-TEXĀ® SF-2.
  • Other suitable soil release polymers include TexCareĀ® polymers, including TexCareĀ® SRA- 100, TexCareĀ® SRA-300, TexCareĀ® SRN-100, TexCareĀ® SRN-170, TexCareĀ® SRN-240, TexCareĀ® SRN-300, and TexCareĀ® SRN-325, all supplied by Clariant.
  • Preferred structure are -[(Z) a -0-OC-Ar-CO-] b and (Z) a -0-OC-[Ar-CO-0-C 3 H 6 -0-OC]b-Ar-CO- 0-(Z) a , where Ar is selected from 1 ,4 substituted phenylene and 1 ,3 substituted phenylene substituted in the 5 position with a sulphonates (SO3 " ) group; Z is selected from
  • ethoxy;propoxy; and mixtures of ethoxy and propoxy; a is from 5 to 100 and b from 2 to 40.
  • C3H6 is i-propyl.
  • the alkoxy chains are capped with groups selected from H; CH3; SO3 " ; CH2COO " ; PO3 2" ; C2H5; n-propyl, i-propyl; n-butyl; t-butyl; and, sulfosuccinate.
  • M t preferably the Terephthalate Polyester Soil Release Polymer is:
  • composition may comprise one or more further polymers. Examples are:
  • carboxymethylcellulose poly (ethylene glycol), polyvinyl alcohol), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid
  • Polymers present to prevent dye deposition may be present, for example
  • Such polymers are preferably present at levels of less then 0.5wt%.
  • composition is preferably devoid of silicone polymers and polymers bearing quaternised N groups.
  • the detergent compositions may also optionally contain relatively low levels of organic detergent builder or sequestrant material.
  • organic detergent builder or sequestrant material examples include the alkali metal, citrates, succinates, malonates, carboxymethyl succinates, carboxylates, polycarboxylates and polyacetyl carboxylates.
  • Specific examples include sodium, potassium and lithium salts of oxydisuccinic acid, mellitic acid, benzene polycarboxylic acids, ethylene diamine tetra-acetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid, and citric acid.
  • DEQUESTTM organic phosphonate type sequestering agents sold by Monsanto and alkanehydroxy phosphonates.
  • 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, such as those sold by BASF under the name SOKALANTM.
  • the aqueous liquid laundry detergent formunation comprise from 0.1 % to 2.0 wt% builder and sequesterant material. Citrate is most preferred.
  • Dyes are described in Color Chemistry Synthesis, Properties and Applications of Organic Dyes and Pigments, (H Zollinger, Wiley VCH, Zurich, 2003) and, Industrial Dyes Chemistry, Properties Applications. (K Hunger (ed), Wiley-VCH Weinheim 2003).
  • Shading Dyes for use in laundry detergents preferably have an extinction coefficient at the maximum absorption in the visible range (400 to 700nm) of greater than
  • the dyes are blue or violet in colour.
  • Preferred shading dye chromophores are azo, azine, anthraquinone, and triphenylmethane.
  • Preferred mono-azo dyes contain a heterocyclic ring and are most preferably thiophene dyes.
  • Azine dye are preferably selected from sulphonated phenazine dyes and cationic phenazine dyes. Preferred examples are acid blue 98, acid violet 50, dye with CAS-No 72749-80-5, acid blue 59.
  • the shading dye is present is present in the composition in range from 0.0001 to
  • the shading dye is a blue or violet shading dye.
  • a mixture of shading dyes may be used.
  • the shading dye is most preferably a reactive blue anthraquinone dye covalently linked to an alkoxylated polyethyleneimine.
  • the alkoxylation is preferably selected from ethoxylation and propoxylation, most preferably propoxylation.
  • the polyethylene imine before reaction with the dye and the propoxylation has a molecular weight of 600 to 1800.
  • An example structure of a preferred reactive anthraquinone covalently attached to a propoxylated polyethylene imine is:
  • Preferred reactive anthraquinone dyes are: Reactive blue 1 ; Reactive blue 2; Reactive blue 4; Reactive blue 5; Reactive blue 6; Reactive blue 12; Reactive blue 16; reactive blue 19; Reactive blue 24 ; Reactive blue 27; Reactive blue 29; Reactive blue 36; Reactive blue 44; Reactive blue 46 ; Reactive blue 47; reactive blue 49; Reactive blue 50; Reactive blue 53; Reactive blue 55; Reactive blue 61 ; Reactive blue 66; Reactive blue 68; Reactive blue 69; Reactive blue 74; Reactive blue 86; Reactive blue 93; Reactive blue 94; Reactive bluel 01 ; Reactive bluel 03; Reactive bluel 14; Reactive bluel 17; Reactive bluel 25; Reactive blue141 ; Reactive blue142; Reactive blue 145; Reactive blue 149; Reactive blue 155;
  • the dyes are listed according to Colour Index (Society of Dyers and Colourists/American Association of Textile Chemists and Colorists) classification.
  • proteases hydrolyse bonds within peptides and proteins, in the laundry context this leads to enhanced removal of protein or peptide containing stains.
  • suitable proteases families include aspartic proteases; cysteine proteases; glutamic proteases; aspargine peptide lyase; serine proteases and threonine proteases. Such protease families are described in the MEROPS peptidase database (http://merops.sanger.ac.uk/). Serine proteases are preferred. Subtilase type serine proteases are more preferred.
  • the term "subtilases" refers to a sub-group of serine protease according to Siezen et al., Protein Engng.
  • Serine proteases are a subgroup of proteases characterized by having a serine in the active site, which forms a covalent adduct with the substrate.
  • the subtilases may be divided into 6 subdivisions, i.e. the Subtilisin family, the Thermitase family, the Proteinase K family, the Lantibiotic peptidase family, the Kexin family and the Pyrolysin family.
  • subtilases are those derived from Bacillus such as Bacillus lentus, B.
  • trypsin-like proteases examples include trypsin (e.g. of porcine or bovine origin) and the Fusarium protease described in WO89/06270, W094/25583 and WO05/040372, and the chymotrypsin proteases derived from Cellumonas described in WO05/052161 and WO05/052146. Further Examples of useful proteases are the variants described in: W092/19729,
  • subtilase variants may comprise the mutations: S3T, V4I, S9R, A15T, K27R, * 36D,
  • protease is a subtilisins (EC 3.4.21.62).
  • subtilases are those derived from Bacillus such as Bacillus lentus,
  • subtilis B. alkalophilus, B. subtilis, B. amyloliquefaciens, Bacillus pumilus and Bacillus gibsonii described in; US7262042 and WO09/021867, and subtilisin lentus, subtilisin Novo, subtilisin Carlsberg, Bacillus licheniformis, subtilisin BPN', subtilisin 309, subtilisin 147 and subtilisin 168 described in WO89/06279 and protease PD138 described in (WO93/18140).
  • the subsilisin is derived from Bacillus, preferably Bacillus lentus, B. alkalophilus, B. subtilis, B.
  • subtilisin is derived from Bacillus gibsonii or Bacillus Lentus.
  • Suitable commercially available protease enzymes include those sold under the trade names names AlcalaseĀ®, BlazeĀ®; DuralaseTm, DurazymTm, RelaseĀ®, RelaseĀ® Ultra, SavinaseĀ®, SavinaseĀ® Ultra, PrimaseĀ®, PolarzymeĀ®, KannaseĀ®, LiquanaseĀ®, LiquanaseĀ® Ultra, OvozymeĀ®, CoronaseĀ®, CoronaseĀ® Ultra, NeutraseĀ®, EverlaseĀ® and EsperaseĀ® all could be sold as UltraĀ® or EvityĀ® (Novozymes A/S). Those sold under the tradename MaxataseĀ®, MaxacalĀ®, MaxapemĀ®, ProperaseĀ®,
  • BLAP Henkel/Kemira
  • BLAP R BLAP with S3T + V4I + V199M + V205I + L217D
  • BLAP X BLAP with S3T + V4I + V205I
  • BLAP F49 BLAP with S3T + V4I + A194P + V199M + V205I + L217D
  • One or more further enzymes are preferred present in a laundry composition of the invention and when practicing a method of the invention.
  • the level of each enzyme in the laundry composition of the invention is from 0.0001 wt% to 0.1 wt% protein.
  • the further enzyme is selected from: alpha-amylases; lipases; and, cellulases.
  • Suitable lipases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful lipases include lipases from Humicola (synonym Thermomyces), e.g. from H. lanuginosa (T. lanuginosus) as described in EP 258 068 and EP 305 216 or from H. insolens as described in WO 96/13580, a Pseudomonas lipase, e.g. from P. alcaligenes or P. pseudoalcaligenes (EP 218 272), P. cepacia (EP 331 376), P. stutzeri (GB 1 ,372,034), P.
  • lipase variants such as those described in WO 92/05249,
  • LipolaseTM and Lipolase UltraTM LipexTM and LipocleanTM (Novozymes A/S).
  • the method of the invention may be carried out in the presence of phospholipase classified as EC 3.1.1 .4 and/or EC 3.1.1.32.
  • phospholipase is an enzyme which has activity towards phospholipids.
  • Phospholipids such as lecithin or phosphatidylcholine, consist of glycerol esterified with two fatty acids in an outer (sn-1 ) and the middle (sn-2) positions and esterified with phosphoric acid in the third position; the phosphoric acid, in turn, may be esterified to an amino-alcohol.
  • Phospholipases are enzymes which participate in the hydrolysis of phospholipids.
  • phospholipases Ai and A2 which hydrolyze one fatty acyl group (in the sn-1 and sn-2 position, respectively) to form lysophospholipid
  • lysophospholipase or phospholipase B
  • Phospholipase C and phospholipase D release diacyl glycerol or phosphatidic acid respectively.
  • the method of the invention may be carried out in the presence of cutinase classified in EC 3.1 .1.74.
  • the cutinase used according to the invention may be of any origin.
  • Preferably cutinases are of microbial origin, in particular of bacterial, of fungal or of yeast origin.
  • Suitable amylases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included.
  • Amylases include, for example, alpha- amylases obtained from Bacillus, e.g. a special strain of B. lichen iformis, described in more detail in GB 1 ,296,839, or the Bacillus sp.
  • Suitable cellulases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Suitable cellulases include cellulases from the genera Bacillus, Pseudomonas, Humicola, Fusarium, Thielavia, Acremonium, e.g. the fungal cellulases produced from Humicola insolens, Thielavia terrestris, Myceliophthora
  • thermophila and Fusarium oxysporum disclosed in US 4,435,307, US 5,648,263,
  • cellulases include CelluzymeTM, CarezymeTM, CellucleanTM, EndolaseTM, RenozymeTM (Novozymes A/S), ClazinaseTM and Puradax HATM (Genencor International Inc.), and KAC-500(B)TM (Kao Corporation).
  • CellucleanTM is preferred.
  • Suitable peroxidases/oxidases include those of plant, bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful peroxidases include peroxidases from Coprinus, e.g. from C. cinereus, and variants thereof as those described in WO 93/24618, WO 95/10602, and WO 98/15257.
  • Commercially available peroxidases include GuardzymeTM and NovozymTM 51004 (Novozymes A/S).
  • Any enzyme present in the composition may be stabilized using conventional stabilizing agents, e.g., a polyol such as 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 such as 4-formylphenyl boronic acid, and the composition may be formulated as described in e.g., WO 92/19709 and WO 92/19708.
  • a polyol such as 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 such as 4-formylphenyl boronic acid
  • a polyol such as propylene glycol or glycerol
  • a sugar or sugar alcohol lactic acid, boric acid, or
  • alkyi groups are sufficiently long to form branched or cyclic chains, the alkyi groups encompass branched, cyclic and linear alkyi chains.
  • the alkyi groups are preferably linear or branched, most preferably linear.
  • the composition preferably comprises a fluorescent agent (optical brightener).
  • fluorescent agents are well known and many such fluorescent agents are available commercially.
  • these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts.
  • Preferred classes of fluorescer are: Di-styryl biphenyl compounds, e.g. Tinopal (Trade Mark) CBS-X, Di-amine stilbene di-sulphonic acid compounds, e.g. Tinopal DMS pure Xtra and Blankophor (Trade Mark) HRH, and Pyrazoline compounds, e.g. Blankophor SN.
  • Di-styryl biphenyl compounds e.g. Tinopal (Trade Mark) CBS-X
  • Di-amine stilbene di-sulphonic acid compounds e.g. Tinopal DMS pure Xtra and Blankophor (Trade Mark) HRH
  • Pyrazoline compounds e.g. Blankophor SN.
  • Preferred fluorescers are: sodium 2 (4-styryl-3-sulphophenyl)-2H-napthol[1 ,2-d]triazole, disodium 4,4'-bis ā‡ [(4-anilino-6-(N methyl-N-2 hydroxyethyl) amino 1 ,3,5-triazin-2- yl)]amino ā‡ stilbene-2-2' disulophonate, disodium 4,4'-bis ā‡ [(4-anilino-6-morpholino-1 ,3,5- triazin-2-yl)]amino ā‡ stilbene-2-2' disulphonate, and disodium 4,4'-bis(2-sulphostyryl)biphenyl.
  • the total amount of the fluorescent agent or agents used in the composition is preferably from 0.0001 to 0.5 wt %, more preferably 0.005 to 2 wt %, most preferably 0.05 to 0.25 wt %.
  • the aqueous solution used in the method has a fluorescer present.
  • the fluorescer is present in the aqueous solution used in the method preferably in the range from 0.0001 g/l to 0.1 g/l, more preferably 0.001 to 0.02 g/l.
  • the composition comprises a perfume.
  • the perfume is preferably in the range from 0.001 to 3 wt %, more preferably 0.05 to 0.5 wt%, most preferably from 0.1 to 1 wt %.
  • CTFA Cosmetic, Toiletry and Fragrance
  • the perfume comprises at least one note (compound) from: alpha-isomethyl ionone, benzyl salicylate; citronellol; coumarin; hexyl cinnamal; linalool; Pentanoic acid, 2-methyl-, ethyl ester; octanal; benzyl acetate; 1 ,6-octadien-3-ol, 3,7-dimethyl-, 3-acetate; cyclohexanol, 2-(1 , 1 -dimethylethyl)-, 1 -acetate; delta-damascone; beta-ionone; verdyl acetate; dodecanal; hexyl cinnamic aldehyde; cyclopentadecanolide; benzeneacetic acid, 2- phenylethyl ester;amyl salicylate; beta-caryophyllene; ethyl undecyl
  • Useful components of the perfume include materials of both natural and synthetic origin. They include single compounds and mixtures. Specific examples of such components may be found in the current literature, e.g., in Fenaroli's Handbook of Flavor Ingredients, 1975, CRC Press; Synthetic Food Adjuncts, 1947 by M. B. Jacobs, edited by Van Nostrand; or Perfume and Flavor Chemicals by S. Arctander 1969, Montclair, N.J. (USA).
  • compositions of the present invention it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.
  • top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2):80 [1955]).
  • Preferred top-notes are selected from citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol.
  • Perfume top note may be used to cue the whiteness and brightness benefit of the invention.
  • perfume may be encapsulated, typical perfume components which it is advantageous to encapsulate, include those with a relatively low boiling point, preferably those with a boiling point of less than 300, preferably 100-250 Celsius. It is also
  • perfume ingredients which have a low CLog P (ie. those which will have a greater tendency to be partitioned into water), preferably with a CLog P of less than 3.0.
  • These materials, of relatively low boiling point and relatively low CLog P have been called the "delayed blooming" perfume ingredients and include one or more of the following materials: allyl caproate, amyl acetate, amyl propionate, anisic aldehyde, anisole, benzaldehyde, benzyl acetate, benzyl acetone, benzyl alcohol, benzyl formate, benzyl iso valerate, benzyl propionate, beta gamma hexenol, camphor gum, laevo-carvone, d- carvone, cinnamic alcohol, cinamyl formate, cis-jasmone, cis-3-hexenyl acetate,
  • compositions of the present invention it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components from the list given of delayed blooming perfumes given above present in the perfume.
  • perfumes with which the present invention can be applied are the so-called aromatherapy' materials. These include many components also used in perfumery, including components of essential oils such as Clary Sage, Eucalyptus, Geranium,
  • the laundry treatment composition does not contain a peroxygen bleach, e.g., sodium percarbonate, sodium perborate, and peracid.
  • a peroxygen bleach e.g., sodium percarbonate, sodium perborate, and peracid.
  • the EPEI Ethoxylated PolyEthylene Imine
  • the SRP Soil Removal Polymer
  • the SRP is as described in WO2014/019903 (Unilever).
  • the viscosity of the formulation were measured using a Paar Physica MCR300 is a commercial stress rheometer. The results are presented in the table below for formulation in the absence of the SRP polymer (0.0 wt%).
  • the inventive formulation F1 and F2 containing the alkyl ether carboxylic acid have high viscosity then the control with sodium lauryl ether sulfate alone.
  • the inventive formulation F1 and F2 containing the alkyl ether carboxylic acid have higher viscosity then the control with sodium lauryl ether sulfate alone.

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Abstract

The present invention provides an alkoxylated polyethylene imine polymer and surfactant formulation for use in domestic laundry.

Description

LAUNDRY DETERGENT COMPOSITION
Field of Invention
The present invention provides an alkoxylated polyethylene imine polymer and surfactant formulation for use in domestic laundry.
Background of the Invention
Domestic Laundry liquid formulation containing Linear AlkyI benzene sulfonate surfactant, AlkyI Ether Sulfate surfactant, and low levels of non-ionic surfactant and zwitterionic surfactant are ubiquitous. To enhance cleaning performance alkoxylated polyethylene imine polymers, preferably in combination with polyethylene terephthalate soil removal polymers. The addition of these polymers greatly reduces the viscosity of the formulation. Effective methods to increase the viscosity of the formulation are required, which do not reduce the surfactant level. WO2013/087286 (Unilever) discloses liquids formulations containing alkyl ether carboxylic acids, betaines, anionic surfactant, non-ionic surfactant for providing softening benefits.
WO2014/060235 (Unilever) discloses a laundry detergent composition comprising (a) nonionic surfactant, (b) anionic surfactant, (c) alkyl ether carboxylic acid or carboxylate salt thereof, and, (d) a polyglucosamine or a copolymer of glucosamine and N- acetylglucosamine; and to its use to soften fabrics.
Summary of the Invention
Surprisingly it is found that partial or complete replacement of the alkyl ether sulfate anionic surfactant with alkyl ether carboxylic acid anionic surfactant, increases the viscosity of the formulation. In one aspect the present invention provides an aqueous liquid laundry detergent composition comprising:
(i) from 2 to 10 wt%, preferably from 2.5 to 5 wt%, of linear alkyl benzene anionic
sulfonate surfactant;
(ii) from 0.5 to 4 wt%, preferably 1.5 to 2.5 wt%, of zwitterionic surfactant selected from: amine oxide; and, carbobetaines;
(iii) from 0.1 to 4 wt%, preferably 0.5 to 2 wt%, of an alkali metal salt, preferably NaCI;
(iv) from 1 to 5 wt%, preferably 1.5 to 4 wt%, of an alkoxylated polyethylene imine,
preferably ethoxylated polyethylene imine;
(v) from 1 to 10 wt%, preferably 2 to 6 wt%, most preferably 3 to 5 wt%, of an alkyl ether carboxylic acid anionic surfactant of the following structure:
R2-(OCH2CH2)n-OCH2-COOH, wherein:
R2 is selected from saturated and mono-unsaturated C10 to C26 linear or branched alkyl chains, preferably a C12 to C20 linear alkyl chains, most preferably a
C16 to C18 linear alkyl chain, and wherein n is selected from: 6 to 20, preferably 7 to
13, more preferably 8 to 12, most preferably 9.5 to 10.5;
(vi) from 0 to 10 wt%, preferably from 2.5 to 5 wt%, of alkyl ether sulfate anionic surfactant with 0.5 to 1 .5 mole equivalent of ethoxylation, preferably 0.9 to 1 .2;
(vii) from 0 to 2 wt%, preferably 0.2 to 1wt% of a terephthalate polyester soil release
polymer;
(viii) from 0 to 4 wt%, preferably from 0 to 1wt%, of a non-ionic surfactant; and
(ix) from 0.0 to 0.2 wt%, preferably from 0.002 to 0.02 wt%, of a protease enzyme, wherein the laundry detergent composition comprises in total from 10 to 20 wt% of anionic surfactant.
In another aspect the present invention provides a domestic method of treating a textile, the method comprising the steps of: treating a textile with from 1 g/L of an aqueous solution of the laundry detergent composition as defined in any one of the preceding claims; and,
allowing said aqueous laundry detergent solution to remain in contact with the textile for 10 minutes to 2 days then rinsing and drying the textile. In the method aspects of the present invention the surfactant used is preferably as preferred for the composition aspects of the present invention.
Domestic methods are preferably conducted in a domestic washing machine or by hand washing. The temperature of the wash is preferably from 285 to 313K. The main wash time is preferably 5 to 30 minutes.
The textile is preferably an item of clothing, bedding or table cloth. Preferred items of clothing are cotton containing shirts, trousers, underwear and jumpers.
Detailed Description of the Invention
Linear alkyl benzene sulfonate
Weights of Linear alkyl benzene sulfonate are calculated as the protonated form. The linear alkyl benzene sulfonate has an alkyl chain length of C8 to C15, preferably C12 to C14.
Linear alkyl benzene sulphonate (LAS) may be obtained, by sulphonating commercially available linear alkyl benzene (LAB); suitable LAB includes low 2-phenyl LAB, such as those supplied by Sasol under the tradename IsochemĀ® or those supplied by Petresa under the tradename PetrelabĀ®, other suitable LAB include high 2-phenyl LAB, such as those supplied by Sasol under the tradename HybleneĀ®. Another suitable route is alkyl benzene sulphonate that is obtained by DETAL catalyzed process, preferably having 8 to 15 carbon atoms. Other synthesis routes, such as HF, may also be suitable.
Alkyl ether sulfate
Weights of alkyl ether sulfate are calculated as the protonated form,
Ri-(OCH2CH2)m-OS03H. Preferably Ri is C10 to C22 saturate or unsaturated linear alkyl chain, more preferably a saturated C12 to C16 linear alkyl chain, most preferably C12 linear alkyl chain (lauryl). The average number of moles of ethoxylation per mole of surfactant is m, m is preferably 0.5 to 1.5.
Alkyl ether carboxylic acid
Weights of alkyl ether carboxylic acid are calculated as the protonated form, R2-(OCH2CH2)n-OCH2COOH. They may be used as salt version for example sodium salt, or amine salt.
The alkyl chain may be linear or branched, preferably it is linear.
The alkyl chain may be aliphatic or contain one cis or trans double bond.
The alkyl chain is preferably selected from CH3(CH2)i5, CH3(CH2)i7,
CH3(CH2)7CH=CH(CH2)8-.
The alkyl ether carboxylic acid is most preferably of the structure:
CH3(CH2)7CH=CH(CH2)8(OCH2CH2)ioOCH2COOH. Alkyl ether carboxylic acid are available from Kao (Akypo Ā®), Huntsman (EmpicolĀ®) and Clariant (Emulsogen Ā®).
Zwitterionic surfactant
The zwitterionic surfactant contains a linear C8 to C16 aliphatic alkyl chain and a positive and negative charged atom within the surfactant molecule. Preferred zwitterionic surfactants are betaines and amine oxides.
The amine oxide is preferably of the structure:
Preferably R3 is C12-C14, most preferably C12 (lauryl). Amine Oxides are available from Huntsman, for example, EmpigenĀ® OB. The betaine is preferably a carbobetaine. The carbobetaine is preferably selected from the structures:
Preferably R4 is C12-C14, most preferably C12 (lauryl). Betaines are available from
Huntsman, for example EmpigenĀ® BB. Cocoamidopropyl betaine (Cas-No 61789-40-0) most preferred.
The zwitterionic is most preferably a carbobetaine.
Non-ionic surfactant
The aqueous liquid laundry detergent may comprise Non-ionic surfactant, preferably an alkyl ethoxylated non-ionic surfactant.
Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having an aliphatic hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids or amides, especially ethylene oxide either alone or with propylene oxide. The preferred nonionic detergent compounds are the condensation products of aliphatic Cs to Cis primary or secondary linear or branched alcohols with ethylene oxide.
Preferably the alkyl ethoxylated non-ionic surfactant is a Cs to Cie primary alcohol with a mole average ethoxylation of 7EO to 9EO units.
Preferably the fraction (weight% of non-ionic)/(weight% of anionic surfactant) is from 0 to 0.2, more preferably 0 to 0.05. Most preferably the formulation does not contain non-ionic.
Further Surfactant
The aqueous liquid laundry detergent may comprises from 0 to 4wt% of further surfactants, for example thos described in "Surface Active Agents" Vol. 1 , by Schwartz & Perry,
Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon's Emulsifiers and Detergents" published by Manufacturing
Confectioners Company or in "Tenside-Taschenbuch", H. Stache, 2nd Edn., Carl Hauser Verlag, 1981 or in Anionic Surfactants: Organic Chemistry edited by Helmut W. Stache (Marcel Dekker 1996) .
Examples of suitable further anionic detergent compounds are; alkyl sulphates, especially those obtained by sulphating linear or branched Cs to Cie alcohols; soaps; alkyl (preferably methyl) ester sulphonates, and mixtures thereof. Alkoxylate Polyethylene Imine
The alkoxylated polyethyelene imine comprises a polyethyleneimine backbone wherein the modification of the polyethyleneimine backbone is intended to leave the polymer without quaternisation. Such materials may be represented as PEI(X)YAO where X represents the molecular weight of the unmodified PEI and Y represents the average moles of alkoxylation (AO) per available NH in the unsubstituted polyethyleneimine backbone. Y is preferably from 7 to 40 more preferably it is in the range of 16 to 26, most preferably 18 to 22. X is selected to be from about 300 to about 10000 weight average molecular weight and is preferably about 600.
The alkoxylation is preferably selected from ethoxylation or propoxylation, or a combination of the two, Ethoxylation is most preferred. The alkoxy chains may be capped with groups selected from: H; CH3; SO3"; CH2COO"; PO32"; C2H5; n-propyl, i-propyl; n-butyl; t-butyl; and, sulfosuccinate, most preferably H.
Most preferably the alkoxylated PEI is PEI(600)20EO.
Terephthalate Polyester Soil Release Polymer Terephthalate Polyester Soil Release Polymer comprise polymers of aromatic dicarboxylic acids and alkylene glycols (including polymers containing polyalkylene glycols), as described in WO2009/153184, EP2692842 and WO2014/019903.
Examples of Terephthalate Polyester Soil Release Polymer are the REPEL-O-TEXĀ® line of polymers supplied by Rhodia, including REPEL-O-TEXĀ® SRP6 and REPEL-O-TEXĀ® SF-2. Other suitable soil release polymers include TexCareĀ® polymers, including TexCareĀ® SRA- 100, TexCareĀ® SRA-300, TexCareĀ® SRN-100, TexCareĀ® SRN-170, TexCareĀ® SRN-240, TexCareĀ® SRN-300, and TexCareĀ® SRN-325, all supplied by Clariant. Preferred structure are -[(Z)a-0-OC-Ar-CO-]b and (Z)a-0-OC-[Ar-CO-0-C3H6-0-OC]b-Ar-CO- 0-(Z)a, where Ar is selected from 1 ,4 substituted phenylene and 1 ,3 substituted phenylene substituted in the 5 position with a sulphonates (SO3") group; Z is selected from
ethoxy;propoxy; and mixtures of ethoxy and propoxy; a is from 5 to 100 and b from 2 to 40. C3H6 is i-propyl.
The alkoxy chains are capped with groups selected from H; CH3; SO3"; CH2COO"; PO32"; C2H5; n-propyl, i-propyl; n-butyl; t-butyl; and, sulfosuccinate.
M t preferably the Terephthalate Polyester Soil Release Polymer is:
wherein c is from 4 to 9; d is from 1 to 3; e is from 40 to 50. Polymers
The composition may comprise one or more further polymers. Examples are
carboxymethylcellulose, poly (ethylene glycol), polyvinyl alcohol), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid
copolymers.
Polymers present to prevent dye deposition may be present, for example
poly(vinylpyrrolidone), poly(vinylpyridine-N-oxide), and poly(vinylimidazole).
Such polymers are preferably present at levels of less then 0.5wt%.
The composition is preferably devoid of silicone polymers and polymers bearing quaternised N groups. Builders and Sequestrants
The detergent compositions may also optionally contain relatively low levels of organic detergent builder or sequestrant material. Examples include the alkali metal, citrates, succinates, malonates, carboxymethyl succinates, carboxylates, polycarboxylates and polyacetyl carboxylates. Specific examples include sodium, potassium and lithium salts of oxydisuccinic acid, mellitic acid, benzene polycarboxylic acids, ethylene diamine tetra-acetic acid, diethylenetriamine-pentaacetic acid, alkyl- or alkenylsuccinic acid, nitrilotriacetic acid, and citric acid. Other examples are DEQUESTā„¢, organic phosphonate type sequestering agents sold by Monsanto and alkanehydroxy phosphonates.
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, such as those sold by BASF under the name SOKALANā„¢.
If utilised, the aqueous liquid laundry detergent formunation comprise from 0.1 % to 2.0 wt% builder and sequesterant material. Citrate is most preferred. Shading Dye
Dyes are described in Color Chemistry Synthesis, Properties and Applications of Organic Dyes and Pigments, (H Zollinger, Wiley VCH, Zurich, 2003) and, Industrial Dyes Chemistry, Properties Applications. (K Hunger (ed), Wiley-VCH Weinheim 2003).
Shading Dyes for use in laundry detergents preferably have an extinction coefficient at the maximum absorption in the visible range (400 to 700nm) of greater than
5000 L mol"1 cm-1, preferably greater than 10000 L mol"1 cm-1. The dyes are blue or violet in colour.
Preferred shading dye chromophores are azo, azine, anthraquinone, and triphenylmethane.
Preferred mono-azo dyes contain a heterocyclic ring and are most preferably thiophene dyes. The mono-azo dyes are preferably alkoxylated and are preferably uncharged or anionically charged at pH=7. Alkoxylated thiophene dyes are discussed in WO/2013/142495 and WO/2008/087497. Preferred examples of thiophene dyes are shown below:
Azine dye are preferably selected from sulphonated phenazine dyes and cationic phenazine dyes. Preferred examples are acid blue 98, acid violet 50, dye with CAS-No 72749-80-5, acid blue 59.
The shading dye is present is present in the composition in range from 0.0001 to
0.5 wt %, preferably 0.001 to 0.1 wt%. Depending upon the nature of the shading dye there are preferred ranges depending upon the efficacy of the shading dye which is dependent on class and particular efficacy within any particular class. As stated above the shading dye is a blue or violet shading dye. A mixture of shading dyes may be used.
The shading dye is most preferably a reactive blue anthraquinone dye covalently linked to an alkoxylated polyethyleneimine. The alkoxylation is preferably selected from ethoxylation and propoxylation, most preferably propoxylation. Preferably 80 to 95 mol% of the N-H groups in the polyethylene imine are replaced with iso-propyl alcohol groups by propoxylation.
Preferably the polyethylene imine before reaction with the dye and the propoxylation has a molecular weight of 600 to 1800. An example structure of a preferred reactive anthraquinone covalently attached to a propoxylated polyethylene imine is:
(Structure I).
Preferred reactive anthraquinone dyes are: Reactive blue 1 ; Reactive blue 2; Reactive blue 4; Reactive blue 5; Reactive blue 6; Reactive blue 12; Reactive blue 16; reactive blue 19; Reactive blue 24 ; Reactive blue 27; Reactive blue 29; Reactive blue 36; Reactive blue 44; Reactive blue 46 ; Reactive blue 47; reactive blue 49; Reactive blue 50; Reactive blue 53; Reactive blue 55; Reactive blue 61 ; Reactive blue 66; Reactive blue 68; Reactive blue 69; Reactive blue 74; Reactive blue 86; Reactive blue 93; Reactive blue 94; Reactive bluel 01 ; Reactive bluel 03; Reactive bluel 14; Reactive bluel 17; Reactive bluel 25; Reactive blue141 ; Reactive blue142; Reactive blue 145; Reactive blue 149; Reactive blue 155;
Reactive blue 164; Reactive blue 166; Reactive blue 177; Reactive blue 181 ; Reactive blue 185; Reactive blue 188; Reactive blue 189; Reactive blue 206; Reactive blue 208; Reactive blue 246; Reactive blue 247; Reactive blue 258; Reactive blue 261 ; Reactive blue 262; Reactive blue 263; and Reactive blue 172.
The dyes are listed according to Colour Index (Society of Dyers and Colourists/American Association of Textile Chemists and Colorists) classification.
Protease Enzyme
Protease enzymes hydrolyse bonds within peptides and proteins, in the laundry context this leads to enhanced removal of protein or peptide containing stains. Examples of suitable proteases families include aspartic proteases; cysteine proteases; glutamic proteases; aspargine peptide lyase; serine proteases and threonine proteases. Such protease families are described in the MEROPS peptidase database (http://merops.sanger.ac.uk/). Serine proteases are preferred. Subtilase type serine proteases are more preferred. The term "subtilases" refers to a sub-group of serine protease according to Siezen et al., Protein Engng. 4 (1991 ) 719-737 and Siezen et al. Protein Science 6 (1997) 501 -523. Serine proteases are a subgroup of proteases characterized by having a serine in the active site, which forms a covalent adduct with the substrate. The subtilases may be divided into 6 subdivisions, i.e. the Subtilisin family, the Thermitase family, the Proteinase K family, the Lantibiotic peptidase family, the Kexin family and the Pyrolysin family.
Examples of subtilases are those derived from Bacillus such as Bacillus lentus, B.
alkalophilus, B. subtilis, B. amyloliquefaciens, Bacillus pumilus and Bacillus gibsonii described in; US7262042 and WO09/021867, and subtilisin lentus, subtilisin Novo, subtilisin Carlsberg, Bacillus licheniformis, subtilisin BPN', subtilisin 309, subtilisin 147 and subtilisin 168 described in WO89/06279 and protease PD138 described in (WO93/18140). Other useful proteases may be those described in W092/175177, WO01/016285, WO02/026024 and WO02/016547. Examples of trypsin-like proteases are trypsin (e.g. of porcine or bovine origin) and the Fusarium protease described in WO89/06270, W094/25583 and WO05/040372, and the chymotrypsin proteases derived from Cellumonas described in WO05/052161 and WO05/052146. Further Examples of useful proteases are the variants described in: W092/19729,
WO96/034946, WO98/201 15, WO98/201 16, WO99/01 1768, WO01/44452, WO03/006602, WO04/03186, WO04/041979, WO07/006305, W01 1/036263, W01 1/036264, especially the variants with substitutions in one or more of the following positions: 3, 4, 9, 15, 27, 36, 57, 68, 76, 87, 95, 96, 97, 98, 99, 100, 101 , 102, 103, 104, 106, 1 18, 120, 123, 128, 129, 130, 160, 167, 170, 194, 195, 199, 205, 206, 217, 218, 222, 224, 232, 235, 236, 245, 248, 252 and 274 using the BPN' numbering. More preferred the subtilase variants may comprise the mutations: S3T, V4I, S9R, A15T, K27R, *36D, V68A, N76D, N87S,R, *97E, A98S,
S99G,D,A, S99AD, S101 G,M,R S103A, V104I,Y,N, S106A, G1 18V,R, H120D,N, N123S, S128L, P129Q, S130A, G160D, Y167A, R170S, A194P, G195E, V199M, V205I, L217D, N218D, M222S, A232V, K235L, Q236H, Q245R, N252K, T274A (using BPN' numbering).
Most preferably the protease is a subtilisins (EC 3.4.21.62).
Examples of subtilases are those derived from Bacillus such as Bacillus lentus,
B. alkalophilus, B. subtilis, B. amyloliquefaciens, Bacillus pumilus and Bacillus gibsonii described in; US7262042 and WO09/021867, and subtilisin lentus, subtilisin Novo, subtilisin Carlsberg, Bacillus licheniformis, subtilisin BPN', subtilisin 309, subtilisin 147 and subtilisin 168 described in WO89/06279 and protease PD138 described in (WO93/18140). Preferably the subsilisin is derived from Bacillus, preferably Bacillus lentus, B. alkalophilus, B. subtilis, B. amyloliquefaciens, Bacillus pumilus and Bacillus gibsonii as described in US 6,312,936 Bl, US 5,679,630, US 4,760,025, US7,262,042 and WO09/021867. Most preferably the subtilisin is derived from Bacillus gibsonii or Bacillus Lentus.
Suitable commercially available protease enzymes include those sold under the trade names names AlcalaseĀ®, BlazeĀ®; DuralaseTm, DurazymTm, RelaseĀ®, RelaseĀ® Ultra, SavinaseĀ®, SavinaseĀ® Ultra, PrimaseĀ®, PolarzymeĀ®, KannaseĀ®, LiquanaseĀ®, LiquanaseĀ® Ultra, OvozymeĀ®, CoronaseĀ®, CoronaseĀ® Ultra, NeutraseĀ®, EverlaseĀ® and EsperaseĀ® all could be sold as UltraĀ® or EvityĀ® (Novozymes A/S). Those sold under the tradename MaxataseĀ®, MaxacalĀ®, MaxapemĀ®, ProperaseĀ®,
PurafectĀ®, Purafect PrimeĀ®, Purafect OxĀ®, FN 3Ā®, FN4Ā®, ExcellaseĀ® and Purafect OXPĀ® by Genencor International. Those sold under the tradename MaxataseĀ®, MaxacalĀ®, MaxapemĀ®, PurafectĀ®, Purafect PrimeĀ®, PreferenzTm, Purafect MAĀ®, Purafect OxĀ®, Purafect OxPĀ®, PuramaxĀ®,
ProperaseĀ®, EffectenzTm, FN2Ā®, FN3Ā® , FN4Ā®, ExcellaseĀ®, OpticleanĀ® and OptimaseĀ® (Danisco/DuPont), Axapemā„¢ (Gist-Brocases N.V.), Those available from Henkel/Kemira, namely BLAP (sequence shown in Figure 29 of US 5,352,604 with the following mutations S99D + SIOI R + S103A + V104I + G159S, hereinafter referred to as BLAP), BLAP R (BLAP with S3T + V4I + V199M + V205I + L217D), BLAP X (BLAP with S3T + V4I + V205I) and BLAP F49 (BLAP with S3T + V4I + A194P + V199M + V205I + L217D) - all from Henkel/Kemira; and KAP (Bacillus alkalophilus subtilisin with mutations A230V + S256G + S259N) from Kao.
Inclusion of protease in the formulation enhances cleaning. Further Enzymes
One or more further enzymes are preferred present in a laundry composition of the invention and when practicing a method of the invention.
Preferably the level of each enzyme in the laundry composition of the invention is from 0.0001 wt% to 0.1 wt% protein.
Preferably the further enzyme is selected from: alpha-amylases; lipases; and, cellulases.
Suitable lipases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful lipases include lipases from Humicola (synonym Thermomyces), e.g. from H. lanuginosa (T. lanuginosus) as described in EP 258 068 and EP 305 216 or from H. insolens as described in WO 96/13580, a Pseudomonas lipase, e.g. from P. alcaligenes or P. pseudoalcaligenes (EP 218 272), P. cepacia (EP 331 376), P. stutzeri (GB 1 ,372,034), P. fluorescens, Pseudomonas sp. strain SD 705 (WO 95/06720 and WO 96/27002), P. wisconsinensis (WO 96/12012), a Bacillus lipase, e.g. from B. subtilis (Dartois et al. (1993), Biochemica et Biophysica Acta, 1 131 , 253-360),
B. stearothermophilus (JP 64/744992) or B. pumilus (WO 91/16422).
Other examples are lipase variants such as those described in WO 92/05249,
WO 94/01541 , EP 407 225, EP 260 105, WO 95/35381 , WO 96/00292, WO 95/30744, WO 94/25578, WO 95/14783, WO 95/22615, WO 97/04079 and WO 97/07202, and
WO 00/60063.
Preferred commercially available lipase enzymes include Lipolaseā„¢ and Lipolase Ultraā„¢, Lipexā„¢ and Lipocleanā„¢ (Novozymes A/S).
The method of the invention may be carried out in the presence of phospholipase classified as EC 3.1.1 .4 and/or EC 3.1.1.32. As used herein, the term phospholipase is an enzyme which has activity towards phospholipids.
Phospholipids, such as lecithin or phosphatidylcholine, consist of glycerol esterified with two fatty acids in an outer (sn-1 ) and the middle (sn-2) positions and esterified with phosphoric acid in the third position; the phosphoric acid, in turn, may be esterified to an amino-alcohol. Phospholipases are enzymes which participate in the hydrolysis of phospholipids. Several types of phospholipase activity can be distinguished, including phospholipases Ai and A2 which hydrolyze one fatty acyl group (in the sn-1 and sn-2 position, respectively) to form lysophospholipid; and lysophospholipase (or phospholipase B) which can hydrolyze the remaining fatty acyl group in lysophospholipid. Phospholipase C and phospholipase D (phosphodiesterases) release diacyl glycerol or phosphatidic acid respectively.
The method of the invention may be carried out in the presence of cutinase classified in EC 3.1 .1.74. The cutinase used according to the invention may be of any origin. Preferably cutinases are of microbial origin, in particular of bacterial, of fungal or of yeast origin. Suitable amylases (alpha and/or beta) include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Amylases include, for example, alpha- amylases obtained from Bacillus, e.g. a special strain of B. lichen iformis, described in more detail in GB 1 ,296,839, or the Bacillus sp. strains disclosed in WO 95/026397 or WO 00/060060. Commercially available amylases are Duramylā„¢, Termamylā„¢, Termamyl Ultraā„¢, Natalaseā„¢, Stainzymeā„¢, Fungamylā„¢ and BANā„¢ (Novozymes A/S), Rapidaseā„¢ and Purastarā„¢ (from Genencor International Inc.). Suitable cellulases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Suitable cellulases include cellulases from the genera Bacillus, Pseudomonas, Humicola, Fusarium, Thielavia, Acremonium, e.g. the fungal cellulases produced from Humicola insolens, Thielavia terrestris, Myceliophthora
thermophila, and Fusarium oxysporum disclosed in US 4,435,307, US 5,648,263,
US 5,691 ,178, US 5,776,757, WO 89/09259, WO 96/029397, and WO 98/012307.
Commercially available cellulases include Celluzymeā„¢, Carezymeā„¢, Cellucleanā„¢, Endolaseā„¢, Renozymeā„¢ (Novozymes A/S), Clazinaseā„¢ and Puradax HAā„¢ (Genencor International Inc.), and KAC-500(B)ā„¢ (Kao Corporation). Cellucleanā„¢ is preferred. Suitable peroxidases/oxidases include those of plant, bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful peroxidases include peroxidases from Coprinus, e.g. from C. cinereus, and variants thereof as those described in WO 93/24618, WO 95/10602, and WO 98/15257. Commercially available peroxidases include Guardzymeā„¢ and Novozymā„¢ 51004 (Novozymes A/S).
Further enzymes suitable for use are discussed in WO2009/087524, WO2009/090576, WO2009/107091 , WO2009/1 1 1258, and WO2009/148983.
Enzyme Stabilizers
Any enzyme present in the composition may be stabilized using conventional stabilizing agents, e.g., a polyol such as 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 such as 4-formylphenyl boronic acid, and the composition may be formulated as described in e.g., WO 92/19709 and WO 92/19708.
Where alkyi groups are sufficiently long to form branched or cyclic chains, the alkyi groups encompass branched, cyclic and linear alkyi chains. The alkyi groups are preferably linear or branched, most preferably linear. Fluorescent Agent
The composition preferably comprises a fluorescent agent (optical brightener). Fluorescent agents are well known and many such fluorescent agents are available commercially.
Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts.
Preferred classes of fluorescer are: Di-styryl biphenyl compounds, e.g. Tinopal (Trade Mark) CBS-X, Di-amine stilbene di-sulphonic acid compounds, e.g. Tinopal DMS pure Xtra and Blankophor (Trade Mark) HRH, and Pyrazoline compounds, e.g. Blankophor SN.
Preferred fluorescers are: sodium 2 (4-styryl-3-sulphophenyl)-2H-napthol[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' disulophonate, disodium 4,4'-bis{[(4-anilino-6-morpholino-1 ,3,5- triazin-2-yl)]amino} stilbene-2-2' disulphonate, and disodium 4,4'-bis(2-sulphostyryl)biphenyl.
The total amount of the fluorescent agent or agents used in the composition is preferably from 0.0001 to 0.5 wt %, more preferably 0.005 to 2 wt %, most preferably 0.05 to 0.25 wt %. The aqueous solution used in the method has a fluorescer present. The fluorescer is present in the aqueous solution used in the method preferably in the range from 0.0001 g/l to 0.1 g/l, more preferably 0.001 to 0.02 g/l.
Perfume
The composition comprises a perfume. The perfume is preferably in the range from 0.001 to 3 wt %, more preferably 0.05 to 0.5 wt%, most preferably from 0.1 to 1 wt %. Many suitable examples of perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance
Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993 Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.
Preferably the perfume comprises at least one note (compound) from: alpha-isomethyl ionone, benzyl salicylate; citronellol; coumarin; hexyl cinnamal; linalool; Pentanoic acid, 2-methyl-, ethyl ester; octanal; benzyl acetate; 1 ,6-octadien-3-ol, 3,7-dimethyl-, 3-acetate; cyclohexanol, 2-(1 , 1 -dimethylethyl)-, 1 -acetate; delta-damascone; beta-ionone; verdyl acetate; dodecanal; hexyl cinnamic aldehyde; cyclopentadecanolide; benzeneacetic acid, 2- phenylethyl ester;amyl salicylate; beta-caryophyllene; ethyl undecylenate; geranyl anthranilate; alpha-irone; beta-phenyl ethyl benzoate; alpa-santalol; cedrol; cedryl acetate; cedry formate; cyclohexyl salicyate; gamma-dodecalactone; and, beta phenylethyl phenyl acetate.
Useful components of the perfume include materials of both natural and synthetic origin. They include single compounds and mixtures. Specific examples of such components may be found in the current literature, e.g., in Fenaroli's Handbook of Flavor Ingredients, 1975, CRC Press; Synthetic Food Adjuncts, 1947 by M. B. Jacobs, edited by Van Nostrand; or Perfume and Flavor Chemicals by S. Arctander 1969, Montclair, N.J. (USA).
It is commonplace for a plurality of perfume components to be present in a formulation. In the compositions of the present invention it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.
In perfume mixtures preferably 15 to 25 wt% are top notes. Top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2):80 [1955]). Preferred top-notes are selected from citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol.
The International Fragrance Association has published a list of fragrance ingredients (perfumes) in 201 1 . (http://www.ifraorq.Org/en-us/inqredients#.U7Z4hPldWzk)
The Research Institute for Fragrance Materials provides a database of perfumes
(fragrances) with safety information.
Perfume top note may be used to cue the whiteness and brightness benefit of the invention.
Some or all of the perfume may be encapsulated, typical perfume components which it is advantageous to encapsulate, include those with a relatively low boiling point, preferably those with a boiling point of less than 300, preferably 100-250 Celsius. It is also
advantageous to encapsulate perfume components which have a low CLog P (ie. those which will have a greater tendency to be partitioned into water), preferably with a CLog P of less than 3.0. These materials, of relatively low boiling point and relatively low CLog P have been called the "delayed blooming" perfume ingredients and include one or more of the following materials: allyl caproate, amyl acetate, amyl propionate, anisic aldehyde, anisole, benzaldehyde, benzyl acetate, benzyl acetone, benzyl alcohol, benzyl formate, benzyl iso valerate, benzyl propionate, beta gamma hexenol, camphor gum, laevo-carvone, d- carvone, cinnamic alcohol, cinamyl formate, cis-jasmone, cis-3-hexenyl acetate,
cuminic alcohol, cyclal c, dimethyl benzyl carbinol, dimethyl benzyl carbinol acetate, ethyl acetate, ethyl aceto acetate, ethyl amyl ketone, ethyl benzoate, ethyl butyrate, ethyl hexyl ketone, ethyl phenyl acetate, eucalyptol, eugenol, fenchyl acetate, flor acetate (tricyclo decenyl acetate) , frutene (tricyclco decenyl propionate) , geraniol, hexenol, hexenyl acetate, hexyl acetate, hexyl formate, hydratropic alcohol, hydroxycitronellal, indone, isoamyl alcohol, iso menthone, isopulegyl acetate, isoquinolone, ligustral, linalool, linalool oxide, linalyl formate, menthone, menthyl acetphenone, methyl amyl ketone, methyl anthranilate, methyl benzoate, methyl benyl acetate, methyl eugenol, methyl heptenone, methyl heptine carbonate, methyl heptyl ketone, methyl hexyl ketone, methyl phenyl carbinyl acetate, methyl salicylate, methyl-n-methyl anthranilate, nerol, octalactone, octyl alcohol, p-cresol, p- cresol methyl ether, p-methoxy acetophenone, p-methyl acetophenone, phenoxy ethanol, phenyl acetaldehyde, phenyl ethyl acetate, phenyl ethyl alcohol, phenyl ethyl dimethyl carbinol, prenyl acetate, propyl bornate, pulegone, rose oxide, safrole, 4-terpinenol, alpha- terpinenol, and /or viridine. It is commonplace for a plurality of perfume components to be present in a formulation. In the compositions of the present invention it is envisaged that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components from the list given of delayed blooming perfumes given above present in the perfume.
Another group of perfumes with which the present invention can be applied are the so- called aromatherapy' materials. These include many components also used in perfumery, including components of essential oils such as Clary Sage, Eucalyptus, Geranium,
Lavender, Mace Extract, Neroli, Nutmeg, Spearmint, Sweet Violet Leaf and Valerian.
It is preferred that the laundry treatment composition does not contain a peroxygen bleach, e.g., sodium percarbonate, sodium perborate, and peracid.
The indefinite article "a" or "an" and its corresponding definite article "the" as used herein means at least one, or one or more, unless specified otherwise. Experimental
The following formulations were made with varying level of salt and SRP addition.
The EPEI (Ethoxylated PolyEthylene Imine) used was a PEI of 600 molecular weight with 20 moles of ethoxylate per NH on the base PEI; it is available as Sokalan HP20 ex BASF. The SRP (Soil Removal Polymer) was used at a level of 0.0 wt% and 0.5 wt%. The SRP used was:
The SRP is as described in WO2014/019903 (Unilever).
The viscosity of the formulation were measured using a Paar Physica MCR300 is a commercial stress rheometer. The results are presented in the table below for formulation in the absence of the SRP polymer (0.0 wt%).
The inventive formulation F1 and F2 containing the alkyl ether carboxylic acid have high viscosity then the control with sodium lauryl ether sulfate alone.
The results are presented in the table below for formulation in the presence of the SRP polymer (0.5 wt%).
The inventive formulation F1 and F2 containing the alkyl ether carboxylic acid have higher viscosity then the control with sodium lauryl ether sulfate alone.

Claims

1. An aqueous liquid laundry detergent composition comprising:
(i) from 2 to 10 wt% of a linear alkyl benzene anionic sulfonate surfactant;
(ii) from 0.5 to 4 wt% of zwitterionic surfactant selected from: amine oxide and carbobetaines;
(iii) from 0.1 to 4 wt% of an alkali metal salt;
(iv) from 1 to 5 wt% of an alkoxylated polyethylene imine;
(v) from 1 to 10 wt% of an alkyl ether carboxylic acid anionic surfactant of the
following structure:
R2-(OCH2CH2)n-OCH2-COOH! wherein:
R2 is selected from saturated and mono-unsaturated C10 to C26 linear or branched alkyl chains, preferably a C12 to C20 linear alkyl chains, most preferably a C16 to C18 linear alkyl chain, and wherein n is selected from 6 to 20;
(vi) from 0 to 10 wt% of an alkyl ether sulfate anionic surfactant with 0.5 to 1.5 mole equivalent of ethoxylation;
(vii) from 0 to 2 wt% of a terephthalate polyester soil release polymer;
(viii) from 0 to 4 wt% of a non-ionic surfactant; and,
(ix) from 0.0 to 0.2 wt% of a protease enzyme, wherein the laundry detergent
composition comprises in total from 10 to 20 wt% of anionic surfactant.
2. An aqueous liquid laundry detergent composition according to claim 1 , wherein the composition comprises from 1 .5 to 2.5 wt% of a zwitterionic surfactant and from 0.5 to 2 wt% of an alkali metal salt.
3. An aqueous liquid laundry detergent composition according to claim 1 or 2, wherein the composition comprises from 2.5 to 5 wt% of an alkyl ether sulfate anionic surfactant. An aqueous liquid laundry detergent composition according to any one of the preceding claims, wherein the composition comprises from 3 to 5 wt% of an alkyl ether carboxylic acid anionic surfactant.
An aqueous liquid laundry detergent composition according to any one of the preceding claims, wherein the composition comprises from 2.5 to 5 wt% of a linear alkyl benzene anionic sulfonate surfactant.
An aqueous liquid laundry detergent composition according to any one of the preceding claims, wherein the alkoxylated polyethylene imine is an ethoxylated polyethylene imine,
An aqueous liquid laundry detergent composition according to any one of the preceding claims, wherein the composition comprises from 0.2 to 1 wt% of a terephthalate polyester soil release polymer.
An aqueous liquid laundry detergent composition according to claim 7, wherein the Terephthalate Polyester Soil Release Polymer is:
wherein c is from 4 to 9; d is from 1 to 3; e is from 40 to 50.
9. An aqueous liquid laundry detergent composition according to any one of the
preceding claims, wherein n is selected from 8 to 12, and R2 is selected from saturated and mono-unsaturated C16 to C18 linear alkyl chain.
10. An aqueous liquid laundry detergent composition according to any one of the
preceding claims, wherein the alkali metal salt is sodium chloride. A domestic method of treating a textile, the method comprising the steps of:
(i) treating a textile with from 1 g/L of an aqueous solution of the laundry detergent composition as defined in any one of the preceding claims; and,
(ii) allowing said aqueous laundry detergent solution to remain in contact with the textile for 10 minutes to 2 days then rinsing and drying the textile.
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BR112018070472B1 (en) * 2016-04-08 2023-04-18 Unilever Ip Holdings B.V. COMPOSITION OF AQUEOUS LIQUID DETERGENT FOR WASHING CLOTHES AND DOMESTIC METHOD OF TREATMENT OF A FABRIC
BR112019011999B1 (en) * 2016-12-15 2022-11-08 Unilever Ip Holdings B.V COMPOSITION OF AQUEOUS LIQUID DETERGENT FOR WASHING CLOTHES AND DOMESTIC METHOD OF TREATMENT OF A FABRIC
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