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
  • C11D1/66—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
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
• • 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
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2075—Carboxylic acids-salts thereof
  • C11D3/2086—Hydroxy carboxylic acids-salts thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/36—Organic compounds containing phosphorus
  • C11D3/361—Phosphonates, phosphinates or phosphonites
• • 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
  • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
  • C11D2111/10—Objects to be cleaned
  • C11D2111/12—Soft surfaces, e.g. textile

Definitions

• Powder laundry detergents are widely used that have sodium percarbonate together with TAED as an activator to effect cleaning and stain removal; these formulations also have high levels of insoluble matter present.
• WO 2010/122050 discloses detergent particles prepared by extruding a surfactant mixture, comprising anionic and non-ionic surfactant, and coating with sodium carbonate. It would be advantageous to more efficacious detergent particles without having to increase the surfactant level of the particles.
• the present invention provides a particulate detergent composition comprising:
• a surfactant selected from: anionic and non-ionic surfactants
• the particulate detergent composition comprises from 0 to 1 wt% peroxide, preferably 0 to 0.1 wt % and most preferably 0 wt%.
• the present invention provides a particulate detergent composition comprising:
• a surfactant selected from: anionic and non-ionic surfactants
• the particulate detergent composition comprises from 0 to 1 wt% peroxide, preferably 0 to 0.1 wt % and most preferably 0 wt%,
• the particulate detergent particles have perpendicular dimensions x, y and z, wherein x is from 0.5 to 2 mm, y is from 2 to 8mm, and z is from 2 to 8 mm, and wherein the inorganic salt are present on the detergent particle as a coating and the surfactant is present as a core.
• integers (i), (ii), (iii) and (iv) are present in the core.
• the present invention provides a method of treating a textile, the method comprising the steps of:
• aqueous solution of the laundry treatment composition having a pH in the range from 7.2 to 10 and comprising: from 0.1 to 3.0 g/L, preferably 0.3 to 1 .5 g/L, of the surfactant; from 0.1 to 3.0 g/L, preferably 0.3 to 1 .5 g/L of an active selected from: citric acid and sodium salts thereof; from 0.02 g/L to 0.65 g/L, preferably 0.06 to 0.33 g/L, of a phosphonate sequestrant; and, from 0.1 to 3.0 g/L, preferably from 0.3 to 1 .5 g/L of sodium carbonate; and,
• the particulate detergent composition is devoid of zeolite.
• the particulate detergent composition is and sodium tripoly phosphate (STP) free.
• STP sodium tripoly phosphate
• the preferred format is one in which integers (i), (ii), (iii) and (iv) are preferably extruded substantially as described in WO 2010/122050 and coated with integer (v).
• step (b) drying the liquid surfactant blend of step (a) in an evaporator or drier to a moisture content of less than 1 .5 wt% and cooling the output from the evaporator or dryer;
• the particulate detergent composition when dissolved in an aqueous medium is alkaline.
• this alkaline solution there are sodium ions present and whilst there may not be any sodium citrate in the particulate detergent composition upon dissolution sodium citrate is generated in solution. It is preferred that sodium citrate is present in the particulate detergent composition.
• Phosphonate sequestrants are commercially available. Commercially available DequestTM phosphonate sequestrants are particularly preferred.
• Phosphonate sequestrants (Dequest ® 2010) 1 - Hydroxyethylidene -1 ,1 ,-diphosphonic acid, (Dequest ® 2066) Diethylenetriamine penta(methylene phosphonic acid), (Dequest ® 7000) 2-Phosphonobutane - 1 ,2,4 - tricarboxylic acid, (Dequest ® 2066C2) Diethylenetriamine penta(methylene phosphonic acid), Dequest ® 2047 ([ethylenebis[nitrilobis(methylene)]]]
• Dequest ® 2016 (1 - Hydroxyethylene-1 ,1 ,-diphsophonic acid sodium salt, Na4HEDP).
• Dequest ® 2016 and Dequest ® 2047 are particularly preferred. Soil Removal Polymer
• Soil release polymers improve the main wash performance of the compositions when used in the low in wash surfactant process of the present invention.
• One preferred class of polymer is the fabric-substantive polymers comprising at least one of (i) saccharide or (ii) dicarboxylic acid and polyol monomer units.
• the soil release polymers for polyester will comprise polymers of aromatic dicarboxylic acids and alkylene glycols (including polymers containing polyalkylene glycols).
• the polymeric soil release agents useful herein especially include those soil release agents having: (a) one or more nonionic hydrophilic components consisting essentially of:
• hydrophilic segment does not encompass any oxypropylene unit unless it is bonded to adjacent moieties at each end by ether linkages, or
• poly (vinyl ester) segments preferably polyvinyl acetate), having a degree of polymerization of at least 2, or
• Ci -C alkyl ether or C hydroxyalkyl ether substituents, or mixtures therein wherein said substituents are present in the form of Ci -C 4 alkyl ether or C 4 hydroxyalkyl ether cellulose derivatives, or mixtures therein, and such cellulose derivatives are amphiphilic, whereby they have a sufficient level of Ci -C alkyl ether and/or C hydroxyalkyl ether units to deposit upon conventional polyester synthetic fibre surfaces and retain a sufficient level of hydroxyls, once adhered to such conventional synthetic fibre surface, to increase fibre surface hydrophilicity, or a combination of (a) and (b).
• polyoxyethylene segments of (a)(i) will have a degree of
• Suitable oxy C 4 -Ce alkylene hydrophobic segments include, but are not limited to, end-caps of polymeric soil release agents such as MO 3 S(CH 2 ) n OCH 2 CH 2 O-, where M is sodium and n is an integer from 4-6, as disclosed in U.S. Pat. No. 4,721 ,580, issued Jan. 26, 1988 to Gosselink.
• Soil release agents characterized by polyvinyl ester) hydrophobic segments include graft copolymers of polyvinyl ester), e.g., Ci -C 6 vinyl esters, preferably polyvinyl acetate) grafted onto polyalkylene oxide backbones, such as polyethylene oxide backbones.
• polyvinyl ester e.g., Ci -C 6 vinyl esters, preferably polyvinyl acetate
• polyalkylene oxide backbones such as polyethylene oxide backbones.
• Commercially available soil release agents of this kind include the SOKALAN type of material, e.g., SOKALAN HP-22, available from BASF (West Germany).
• One type of preferred soil release agent is a copolymer having random blocks of ethylene terephthalate and polyethylene oxide (PEO) terephthalate.
• the molecular weight of this polymeric soil release agent is in the range of from about 25,000 to about 55,000. See U.S. Pat. No. 3,959,230 to Hays, issued May 25, 1976 and U.S. Pat. No. 3,893,929 to Basadur issued Jul. 8, 1975.
• Another preferred polymeric soil release agent is a polyester with repeat units of ethylene terephthalate units contains 10 to 15 wt% of ethylene terephthalate units together with 90 to 80 wt% weight of polyoxyethylene terephthalate units, derived from a polyoxyethylene glycol of average molecular weight 300-5,000. Examples of this polymer include the commercially available material ZELCON 5126 (from DuPont) and MILEASE T (from ICI). See also U.S. Pat. No. 4,702,857, issued Oct. 27, 1987 to Gosselink.
• Another preferred polymeric soil release agent is a sulphonated product of a substantially linear ester oligomer comprised of an oligomeric ester backbone of terephthaloyl and oxyalkyleneoxy repeat units and terminal moieties covalently attached to the backbone.
• Pat. No. 4,968,451 issued Nov. 6, 1990 to J.J. Scheibel and E. P. Gosselink.
• Suitable polymeric soil release agents include the terephthalate polyesters of U.S. Pat. No. 4,71 1 ,730, issued Dec. 8, 1987 to Gosselink et al, the anionic end-capped oligomeric esters of U.S. Pat. No. 4,721 ,580, issued Jan. 26, 1988 to
• Preferred polymeric soil release agents also include the soil release agents of U.S. Pat. No. 4,877,896, issued Oct. 31 , 1989 to Maldonado et al, which discloses anionic, especially sulfoarolyl, end-capped terephthalate esters.
• Still another preferred soil release agent is an oligomer with repeat units of terephthaloyl units, sulfoisoterephthaloyl units, oxyethyleneoxy and oxy-1 ,2- propylene units.
• the repeat units form the backbone of the oligomer and are preferably terminated with modified isethionate end-caps.
• a particularly preferred soil release agent of this type comprises about one sulfoisophthaloyl unit, 5 terephthaloyl units, oxyethyleneoxy and oxy-1 ,2-propyleneoxy units in a ratio of from about 1 .7 to about 1 .8, and two end-cap units of sodium 2-(2- hydroxyethoxy)-ethanesulphonate.
• Said soil release agent also comprises from about 0.5% to about 20%, by weight of the oligomer, of a crystalline-reducing stabilizer, preferably selected from the group consisting of xylene sulfonate, cumene sulfonate, toluene sulfonate, and mixtures thereof.
• a crystalline-reducing stabilizer preferably selected from the group consisting of xylene sulfonate, cumene sulfonate, toluene sulfonate, and mixtures thereof.
• Suitable soil release polymers are described in WO 2008095626 (Clariant); WO 2006133867 (Clariant); WO 2006133868 (Clariant); WO 2005097959 (Clariant); WO 9858044 (Clariant); WO 2000004120 (Rhodia Chimie); US 6242404 (Rhodia Inc); WO 2001023515 (Rhodia Inc); WO 9941346 (Rhodia Chim); WO 9815346 (Rhodia Inc); WO 9741 197 (BASF); EP 728795 (BASF); US 5008032 (BASF); WO 2002077063 (BASF); EP 483606 ( BASF); EP 442101 (BASF); WO 9820092 (Proctor & Gamble); EP 201 124 (Proctor & Gamble); EP 199403 (Proctor & Gamble); DE 2527793 (Proctor & Gamble); WO 9919429 (Proctor & Gamble); WO 9859030
• the most preferred soil release polymers are the water soluble/miscible or dispersible polyesters such as: linear polyesters sold under the Repel-O-Tex brand by Rhodia (Gerol), or the Texcare brand by Clariant, especially Texcare SRN170, and heavily branched polyesters such as those available from Sasol and described in US 71 19056.
• the polyesters are preferably nonionic and comprise a mid block of spaced apart terephthalate repeat units and at least one end block based on polyethylene glycol with a lower alkyl or hydrogen termination.
• the coated laundry detergent particle is curved.
• the coated laundry detergent particle may be shaped as a disc.
• the coated laundry detergent particle does not have hole; that is to say, the coated laundry detergent particle does not have a conduit passing there though that passes through the core, i.e., the coated detergent particle has a topologic genus of zero.
• particulate detergent particles has perpendicular dimensions x, y and z, wherein x is from 0.5 to 2 mm, y is from 2 to 8mm, and z is from 2 to 8 mm.
• the inorganic salt is present on the detergent particle as a coating and the surfactant is present as a core.
• the inorganic coating reduces agglomeration and deterioration on storage.
• nonionic and anionic surfactants of the surfactant system may be chosen from the surfactants described "Surface Active Agents" Vol. 1 , by
• surfactants used are saturated.
• Suitable anionic detergent compounds which may be used are usually water- soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals.
• suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulphates, especially those obtained by sulphating higher Cs to Cis alcohols, produced for example from tallow or coconut oil, sodium and potassium alkyl C 9 to C 2 o benzene sulphonates, particularly sodium linear secondary alkyl Ci 0 to Ci 5 benzene sulphonates; and sodium alkyl glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum.
• anionic surfactants are sodium lauryl ether sulfate (SLES), particularly preferred with 1 to 3 ethoxy groups, sodium Cio to Ci 5 alkyl benzene sulphonates and sodium C12 to Cis alkyl sulphates. Also applicable are surfactants such as those described in EP-A-328 177 (Unilever), which show resistance to salting-out, the alkyl polyglycoside surfactants described in EP-A-070 074, and alkyl monoglycosides. The chains of the surfactants may be branched or linear. Soaps may also be present.
• the fatty acid soap used preferably contains from about 16 to about 22 carbon atoms, preferably in a straight chain configuration.
• the anionic contribution from soap is preferably from 0 to 30 wt % of the total anionic.
• At least 50 wt % of the anionic surfactant is selected from: sodium C to Ci5 alkyl benzene sulphonates; and, sodium Ci 2 to Ci 8 alkyl sulphates. Even more preferably, the anionic surfactant is sodium C to Ci 5 alkyl benzene sulphonates.
• Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
• Preferred nonionic detergent compounds are C 6 to C 2 2 alkyl phenol- ethylene oxide condensates, generally 5 to 25 EO, i.e. 5 to 25 units of ethylene oxide per molecule, and the condensation products of aliphatic Cs to Cis primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 50 EO.
• the non-ionic is 10 to 50 EO, more preferably 20 to 35 EO. Alkyl ethoxylates are particularly preferred.
• Cationic surfactant may be present as minor ingredients at levels preferably between 0 to 5 wt % on total surfactant.
• surfactants are mixed together before being dried. Conventional mixing equipment may be used.
• the surfactant core of the laundry detergent particle may be formed by extrusion or roller compaction and subsequently coated with an inorganic salt.
• the surfactant system used is calcium tolerant and this is a preferred aspect because this reduces the need for builder.
• Such blends are called calcium tolerant surfactant blends if they pass the test set out hereinafter.
• the invention may also be of use for washing with soft water, either naturally occurring or made using a water softener. In this case, calcium tolerance is no longer important and blends other than calcium tolerant ones may be used.
• the surfactant blend in question is prepared at a concentration of 0.7 g surfactant solids per litre of water containing sufficient calcium ions to give a French hardness of 40 (4 x 10 "3 Molar Ca 2+ ).
• Other hardness ion free electrolytes such as sodium chloride, sodium sulphate, and sodium hydroxide are added to the solution to adjust the ionic strength to 0.05M and the pH to 10.
• the adsorption of light of wavelength 540 nm through 4 mm of sample is measured 15 minutes after sample preparation. Ten measurements are made and an average value is calculated. Samples that give an absorption value of less than 0.08 are deemed to be calcium tolerant.
• Suitable calcium tolerant co- surfactants include SLES 1 -7EO, and alkyl-ethoxylate nonionic surfactants, particularly those with melting points less than 40°C.
• a LAS/SLES surfactant blend has a superior foam profile to a LAS nonionic surfactant blend and is therefore preferred for hand washing formulations requiring high levels of foam.
• SLES may be used at levels of up to 30 wt % of the surfactant blend.
• the amount of coating should lay in the range 1 to 40 wt% of the particle, preferably 20 to 40 wt%, more preferably 25 to 35 wt% for the best results in terms of anti-caking properties of the detergent particles.
• the coating is preferably applied to the surface of the surfactant core, by deposition from an aqueous solution of the water soluble inorganic salt.
• an aqueous solution of the water soluble inorganic salt can be performed using a slurry.
• the aqueous solution preferably contains greater than 50g/L, more preferably 200 g/L of the salt.
• An aqueous spray-on of the coating solution in a fluidised bed has been found to give good results and may also generate a slight rounding of the detergent particles during the fluidisation process. Drying and/or cooling may be needed to finish the process.
• a preferred calcium tolerant coated laundry detergent particle comprises 15 to 100 wt% on surfactant of anionic surfactant of which 20 to 30 wt% on surfactant is sodium lauryl ether sulphate.
• the coated laundry detergent particle comprises from 10 to 100 wt %, more preferably 50 to 100 wt %, even more preferably 80 to 100 wt %, most preferably 90 to 100 wt % of a laundry detergent formulation in a package.
• the package is that of a commercial formulation for sale to the general public and is preferably in the range of 0.01 kg to 5 kg, preferably 0.02 kg to 2 kg, most preferably 0.5 kg to 2 kg.
• the coated laundry detergent particle is such that at least 90 to 100 % of the coated laundry detergent particles in the in the x, y and z dimensions are within a 20 %, preferably 10%, variable from the largest to the smallest coated laundry detergent particle.
• the particle preferably comprises from 0 to 15 wt % water, more preferably 0 to 10 wt %, most preferably from 1 to 5 wt % water, at 293K and 50% relative humidity. This facilitates the storage stability of the particle and its mechanical properties.
• adjuncts as described below may be present in the coating or the core. These may be in the core or the coating.
• Fluorescent Agent
• the coated laundry detergent particle 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.
• the total amount of the fluorescent agent or agents used in the composition is generally from 0.005 to 2 wt %, more preferably 0.01 to 0.1 wt %. Suitable Fluorescer for use in the invention are described in chapter 7 of Industrial Dyes edited by K.Hunger 2003 Wiley-VCH ISBN 3-527-30426-6.
• Preferred fluorescers are selected from the classes distyrylbiphenyls,
• the fluorescer is preferably sulfonated.
• 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-sulfophenyl)- 2H-napthol[1 ,2-d]triazole, disodium 4,4'-bis ⁇ [(4-anilino-6-(N methyl-N-2
• Tinopal® DMS is the disodium salt of disodium 4,4'-bis ⁇ [(4-anilino-6-morpholino- 1 ,3,5-triazin-2-yl)]amino ⁇ stilbene-2-2' disulfonate.
• Tinopal® CBS is the disodium salt of disodium 4,4'-bis(2-sulfostyryl)biphenyl.
• the composition comprises a perfume.
• the perfume is preferably in the range from 0.001 to 3 wt %, most preferably 0.1 to 1 wt %.
• CTFA Cosmetic, Toiletry and
• perfume components there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.
• 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. It is preferred that the coated laundry detergent particle 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.
• composition may comprise one or more further polymers.
• further polymers are carboxymethylcellulose, poly (ethylene glycol), polyvinyl alcohol), polyethylene imines, ethoxylated polyethylene imines, water soluble polyester polymers polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid copolymers.
• One or more enzymes are preferred present in a composition of the invention.
• the level of each enzyme is from 0.0001 wt% to 0.5 wt% protein on product.
• enzymes include proteases, alpha-amylases, cellulases, lipases, peroxidases/oxidases, pectate lyases, and mannanases, or mixtures thereof.
• 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
• 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, WO 00/60063, WO 09/107091 and WO09/1 1 1258.
• Preferred commercially available lipase enzymes include LipolaseTM and Lipolase UltraTM, LipexTM (Novozymes A/S) and LipocleanTM.
• 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 A 2 which hydrolyze one fatty acyl group (in the sn-1 and sn-2 position, respectively) to form
• lysophospholipid lysophospholipid
• lysophospholipase or phospholipase B which can hydrolyze the remaining fatty acyl group in lysophospholipid.
• Phospholipase C and phospholipase D release diacyl glycerol or
• proteases include those of animal, vegetable or microbial origin. Microbial origin is preferred. Chemically modified or protein engineered mutants are included.
• the protease may be a serine protease or a metallo protease, preferably an alkaline microbial protease or a trypsin-like protease.
• Preferred commercially available protease enzymes include AlcalaseTM, SavinaseTM, PrimaseTM,
• DuralaseTM DyrazymTM, EsperaseTM, EverlaseTM, PolarzymeTM, and KannaseTM, (Novozymes A S), MaxataseTM, MaxacalTM, MaxapemTM, ProperaseTM,
• the method of the invention may be carried out in the presence of cutinase.
• cutinase used according to the invention may be of any origin.
• 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. licheniformis, 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 DuramylTM, TermamylTM, Termamyl UltraTM, NatalaseTM,
• 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
• cellulases include CelluzymeTM, CarezymeTM, EndolaseTM, RenozymeTM (Novozymes A/S), ClazinaseTM and Puradax HATM (Genencor International Inc.), and KAC-500(B)TM (Kao Corporation).
• 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.
• composition of the invention serves to boost enzyme cleaning.
• proteases e.g., SavinaseTM
• lipases e.g., LipexTM
• the boosting of the enzyme efficacy is ascribed to the high citrate, sequestrate levels.
• 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.
• 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.
• Sequesterants may be present in the coated laundry detergent particles. It is preferred that the coated detergent particle has a core to shell ratio of from 3 to 1 :1 , most preferably 2.5 to 1 .5:1 ; the optimal ratio of core to shell is 2:1 .
• Soil release polymer (same as in J below) 2.0
• Silicon Antifoam (same as in J below) 0.5
• the washing experiment was carried out using water at a total hardness of 25°FH (4:1 Ca:Mg). Washes were carried out at a liquor to cloth ratio of 4:1 with a total load weight of 3 Kg.
• the wash composition comprised of a mix of 50% cotton and 50% polyester.
• the non-peroxide compositions (J and S) were added at 38 g and the peroxide composition was added at 85g respectively to the wash. After washing, the cloths are left to dry in the dark overnight. The reflection measurements are then taking and ⁇ E, with respect to the white tile
• SRI Stain Removal Index

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