MXPA97006671A - Composition containing coloring and cellulas fixers for te washing - Google Patents

Abstract

The present invention relates to a laundry composition comprising a cellulose enzyme and a dye fixing agent characterized in that the enzyme is present at a level ranging from 0.05 CEVU / gram to 125 CEVU / grain of finished product and the coloring fixing agent. is present at levels between 0.01% to 50% in pe

Description

COMPOSITION CONTAINING COLORING AND CELLULAS FIXERS FOR WASHING FABRICS FIELD OF THE INVENTION The present invention relates to laundry compositions, specifically fabric conditioning compositions, for use in the rinse cycle of the washing process in order to improve color depth maintenance of colored fabrics under single or multiple wash cycles.

BACKGROUND OF THE INVENTION As the ode changes into more colorful fabrics, especially of multiple colors, the problem of dye transfer during moisture treatments has become more acute. When mixed colored fabrics and mixed loads of colored fabrics and white fabrics are washed in a washing process, there is a risk of dye transfer through the treatment solution from one fabric to another. The dye transfer can occur when the color runs out and causes paleness of the colors of coloring and / or staining of fabrics and is of course undesirable and unacceptable. The paleness of colored fabrics ba or repeated washing cycles is a concern identified for the laundry consumer. Pali can occur through loss of dye in the wash solution due to a poor bond between the dye and the fiber of the fabric, but it can also occur through the formation of lint on the surface of the fabric. The fo rm ers of fabric cleaning products, detergents with a cleaning function and fabric softener formulators that are added during rinsing providing anti-static and anti-static benefits to fabrics, have clearly recognized the need to improve loyalty. of the color of dyed fabrics. A wide variety of ingredients to be used in laundry operations to improve the appearance of fabrics has been suggested in the past. For example, cellulase enzymes have been used to increase the appearance in cotton fabrics (colored). Other means to deal with the problem of color loss employ dye transfer inhibiting agents in the wash solution. Although the use of cellulases and dye transfer inhibiting agents can satisfy consumer needs to a certain degree to maintain color fidelity, there is certainly a need for improvements in this area. EP 462 806 discloses a method and composition for treating fabric to reduce the amount of dye released from colored fabrics during wet treatments such as washing and rinsing processes. To achieve this, cationic dye fixing agents are added to the laundry composition so that the temperature of the wash solution is less than 40 ° C throughout the process. Optionally, enzymes such as cellulaea, protease and arm lasas are added to the detergent composition. It is described that specific levels of cellulase, very specifically cellulases as described in the application of International Patent UO 91/17243, would lead from 0.05 CEVU / g to 125 CEVU / g the finished product in combination with ionic cation fixatives, leads to an improved color depth maintenance of colored fabrics under individual or multiple wash cycles.

BRIEF DESCRIPTION OF THE INVENTION The present invention relates to laundry compositions, detergents as well as fabric softeners that are added during rinsing comprising a cellulase enzyme and a cationic dye fixing agent wherein the enzyme is present at a level varying from 0.05 CEVU / ga 125 CEVU / g of finished product and wherein the dye fixing agent is present at levels comprised between 0.01% and 50% by weight. The most preferred cellulases are those described in the International Patent Application UO 91/17243. A cellulase preparation useful in the compositions of the invention may consist essentially of a homogeneous endoglucanase component, which is immunoreactive with an antibody raised against a highly purified 43kD cellulase derived from Hurnicola Lnsolens DBM 1800, or which is homologous to said endoglucanase of 43H). Dye fixative agents reported include members selected from the group consisting of cationic dye fixatives, e.g., Sandofix TPS *, Sandofix UE56R, Indosol CRR, Solidogen FRZR and similar from Sandoz.

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the maintenance of improved color depth of colored fabrics under individual or multiple wash cycles. The improvement in color fidelity obtained by the present invention can be measured in several ways. One way is that panels of qualifying experts usually compare, in accordance with established panel score unit (PSU) scales, fabrics treated with and without the composition in accordance with the present invention. Another way is the determination of the so-called Delta-E values. Delta-E is defined, for example, in OSTH D2244. Delta E is the color difference calculated as or defined in ASTM D2244, that is, the magnitude and direction of the difference between the peylophysical color stimuli defined by tristorulus values, or by the coordinates of crornaticity and luminance factor, co or is calculated by means of a specified set of difference equations color defined in the CIÉ 1976 CIELAB component color space, the Freiele-MacAdarn-Chickering opponent color space or any equivalent * color space. Alternatively, the depth of color can be characterized by the ratio k / s where is a coefficient of extinction of the dye proportional to its concentration in the fabric, while s is a dispersion coefficient which means the reflectivity of light of the support cloth. K decreases when the dye is displaced from the garments from which it comes off and f increases when the fabric has more lint. Both effects result in a lower k / s ratio and consequently lead to a loss of color depth. The purpose of the present invention is to face both mechanisms of loss of depth of color at the same time, that is, it affects both coke and a unique combination of technologies that act cooperatively towards a better maintenance of / s under cycles of repeated washing.

Cellulase Enzymes An essential component of the laundry composition according to the invention is the cellulase enzyme. Cellulases useful in the present invention include bacterial or fungal cellulases. Preferably, they will have an optimum pH between 5 and 9.5. Suitable celluloses are described in the US patent. No. 4,435,307, Barbesgoard et al., Which describes fungal cellulases produced from Hurnicola insolens. Suitable cellulases are also described in patents GB-fl-2 075,028, GB-A-2 095,275 and DE-OS-2, 47, 832. Examples of said cellulases are cellulases produced by a strain of Humicola insolens (Húmicola grísea var. therrnoidea), particularly by strain DSfl 1800 Humicola Other suitable cellulases, for example, cellulases that originate from Humicola insolens having a molecular weight of approximately 50KDa, an isoelectric point of 5.5 and containing 415 amino acids. Especially suitable cellulases are cellulases that have color care benefits. Examples of said cellulases are cellulases which are described in European Patent Application No. 91202879.2, filed on November 6, 1991 (Novo Nordisk ñ / S). The cellulase added to the composition of the present invention may be in the form of a granular material that does not form fine powder, e.g., "marurnes" or "pill", or in the form of a liquid, e.g., one wherein the cellulase is supplied with a suspended cellulase concentrate, e.g., in a nonionic surfactant or dissolved in an aqueous medium. Preferred cellulases for use herein are characterized in that they provide at least 10% removal of radiolabeled, mobilized, carotid imotylcellulose, to C ^ CHC - a method described in EPfl 3 50 098 (incorporated herein by reference in its entirety) to 25x10-6 weight of cellulase protein in laundry test solution. The majority of the preferred cellulases are those that are described in the international patent application U091 / 17243. For example, a cellulase preparation useful in the compositions of the invention may consist essentially of a homogeneous endoglucanase component, which is immunoreactive with an antibody raised against a highly purified 43 kD cellulase derived from Hurmcola msolens, DSM 1800, or which is homologous to said endoglucanase of 43 | D. The cellulases of the present should be used in the compositions of the present invention at a level equivalent to an activity of from about 0.05 to about 125 CEVU / gram of the composition CCEVU = Cellulose Viscosity Uni (equivalent), as describes, for example, in UO 91/131361 and most preferably from about 5 to about 100 CEVU / gram. Said cellulase levels are selected to provide the preferred cellulase activity at a level such that the compositions deliver an amount of cellulase deserving appearance and / or fabric softener less than about 50 CEVU per liter of rinse solution, preferably less than about 30 CEVU per * lit or, very preferably below about 25 CEVU per liter, and most preferably still below 20 CEVU per liter, during the rinse cycle of a machine washing process. Preferably, the compositions of the present invention are used in the rinse cycle at a level to provide approximately 0.05 CEVU per liter of rinse solution to approximately 50 CEVU per liter of rinse solution, most preferably around * of 0.1 CEVU per liter at about 20 CEVU per liter, still preferably about 0.1 CEVU per liter at about 5 CEVU per * liter, and most preferably still about 0.1 CEVU per liter at about 1.5 CEVU per liter. The cellulase consisting essentially of a homogeneous endoglucanase component which is in unreacted with an antibody produced against highly purified 43 kD cellulase derived from Humicola msolens, DSM 1800, or which is homologous to the 43 kD endoglucanase and BAN cellulases, such as those available from NOVO NORDISK A / S are especially useful here. If used, said enzyme preparations will typically comprise from about 0.001% to about 2%, by weight, of the present compositions.

Fabric Softeners / Anti-Static The compositions and methods of the present optional can also comprise one or more fabric softening or antistatic agents to provide additional fabric care benefits. If used, said ingredients will typically comprise from about 0.5% to about 35% by weight of the present compositions, but can comprise up to 90% by weight of the compositions, or greater, in highly concentrated or solid forms. Preferred fabric softening agents to be used in the present invention are quaternary ammonium compounds or amine precursors which have the formula (I) or (II) below.

(I) (II) Q is -OC (O) - or -C (0) -0- or -0-C (0) -0- or -NR «-C (0) - or -C (0) -NR * -, or mixtures thereof, e.g., an amide substituent and an ester substituent on the same molecule; R is (CH2) n-0-T2 or T3; R2 is (CH2) rn-Q-T4 or TS or R3; R3 is C1-C4 alkyl or C1-C4 hydroxyalkyl or H; R * is H or Ci-C-alkyl or hydroxy-Ci-C4 alkyl; Ti, T2, T3, T *, T5 are (the same or different) C11-C22 alkyl or alkenyl; n and m are integers from 1 to 4; and X- is an anion compatible with softener *. The alkyl or alkenyl chain Ti, T2, T3, T *, T5 must contain at least 11 carbon atoms, preferably at least 16 carbon atoms. The chain can be straight or branched. Sebum is a convenient and low-cost source of long chain alkyl and alkenyl material. The compounds wherein T, T, T31 T *, Ts represents the mixture of long chain materials typical for sebum are particularly preferred. Specific examples of quaternary ammonium compounds suitable for use in the aqueous fabric softening compositions herein include: 1) N, N-di (tallowyloxyethyl) -N, N-dimethylammonium chloride; 2) N, N-di (tallowyloxyethyl) -N-rnethyl-N- (2-hydroxyethyl) ammonium chloride or its corresponding amide (available from VARI OFT 222); 3) Chloride of N, N-d? (l-set > or lox? -2 -oxo-yl) -N, N- di ethyl amoruo; 4) Chloride of N, N-d? (2-sebo? Lox? Et ilcarboniloxiet il) -N, N-dirnet LO callus; 5) N- (2- sebo lox? -2-et? L) -N- (2-sebo? Lox? -2 -oxo-eti 1) -N, N-d? Met? Lamon? Ole chloride; 6) Chloride of N, N, N-tp (seboyl-oxy-ethyl) -N-rneti larnome; 7) N- (2-sebum? Lox? -2-oxoet? L) -N- (tallow? N, Nd? Met il-ammonium chloride; and 8) 1,2-d? Tallow chloride? ox? -3-tr? rnet? larnon? opropane; and mixtures of any of the above materials. Of these, compounds 1-7 are examples of compounds of formula (I), compound 8 is a compound of formula (II). Particularly preferred is N, N ~ d (tallowyl-1-yl-ethyl) -N, N-d-methylene chloride, wherein the tallow chains are at least partially unsaturated. The level of unsaturation of the sebum chain can be measured by the iodine value (VY) of the corresponding fatty acid, which in the present case must be * preflopibly in the range of 5 to 100, distinguishing two categories of compounds, which have a IV of about 25. In fact, for compounds of the formula (I) made from tallow fatty acids having a VY of 5 to 25, preferably 15 to 20, it has been found that a cis / isomer weight ratio trans greater than about 30/70, preferably greater than about 50/50 and most preferably even greater than about 70/30 provides optimum concentrating capacity. For compounds of the formula (I) made from tallow fatty acids having a VY of about 25, the ratio of cis to trans isomers has been found to be less critical unless very high concentrations are required. Other examples of suitable quaternary ammoniums of formula (I) and (II) can be obtained for example: by replacing "tallow" in the above compounds, for example, by coconut oil, palm oil, lauroyl, oleyl, ricinoleyl, stearyl , palrnityl or the like, said fatty acid chains being completely saturated or preferably at least partially unsaturated; - replacing "methyl" in the above compounds with ethyl, ethoxy, propyl, propoxy, isopropyl, butyl, isobutyl or t-butyl; replacing "chloride" in the above compounds with bromide, ethyl sulfate, urea, sulfate, nitrate and the like. In fact, the anion is simply present as a counter ion of the positively charged quaternary ammonium compounds. The nature of the counterion is not critical at all for the practice of the present invention. The scope of this invention is not considered limited to any particular anion. By "amine precursors thereof" is meant the secondary or tertiary amines corresponding to the above quaternary ammonium compounds, said amines being substantially protonated in the compositions herein due to the claimed pH values. The ammonium or quaternary ammonium precursor compounds herein are present at levels of about IX to about 80% of the compositions in the present invention, depending on the performance of the composition that can be diluted with a preferred level of component. active from about 5% to about 15%, or concentrated, with a preferred level of active component from about 15% to about 50%, most preferably from about 15% to about 35%. For many prior fabric softening agents, the pH of the compositions herein is an essential parameter of the present invention. In fact, the pH influences the stability of the quaternary ammonium or amine precursor compounds, and of the cellulase, especially under conditions of prolonged storage. The pH, as defined in the present context, is measured in the net compositions, or in the continuous phase after the separation of the dispersed phase by ultracentrifuging, at 20 ° C. For optimum hydrolytic capacity of compositions comprising softeners with ester bonds, the net pH, measured under the aforementioned conditions, should be in the range of about 2.0 to about 4.5, preferably from about 2.0 to about 3.5. The pH of said compositions herein can be regulated by the adhesion of a Bronsted acid. With softeners that do not have an ester, the pH may be higher, typically on the 3.5 to 8.0 scale. Examples of suitable acids include inorganic mineral acids, carboxy acid acids, in particular carboxylic acids of low molecular weight (C1-C5), and alkyl sulphonic acids. Suitable inorganic acids include HCl, H2SO4, HNO3 and H3PO. Suitable organic acids include formic, acetic, citric, methylsulphonic and ethylsulphonic acids. The preferred acids are citric, hydrochloric, phosphoric, formic, ronic, phonic and benzoic acids. Softening agents also useful in the compositions of the present invention are nonionic fabric softening materials, preferably in combination with cationic softening agents. Typically, various non-ionic fabric softening materials have an HLB of from about 2 to about 9, very typically from about 3 to about 7. Such non-ionic fabric softening materials tend to be easily dispersed by themselves, or when they combine with other materials such as an individual long chain alkyl cationic surfactant described in more detail below. The dispersibility can be improved by using individual long chain alkyl cationic surfactant mixed with other materials as discussed below, the use of hot water and / or more agitation. In general, the selected materials should be relatively crystalline, higher melting point (eg,> 40 ° C) and relatively insoluble in water. The level of optional non-ionic softener in the compositions herein is typically from about 0.1% to about 10%, preferably from about 1% to about 5%. Preferred nonionic softeners are partial fatty acid esters of polyhydric alcohols, anhydrides thereof, wherein the alcohol, or anhydride contains from 2 to 18, preferably from 2 to 8, carbon atoms and each fatty acid portion contains from 12 to 30, preferably from 16 to 20, carbon atoms. Typically, said softeners contain from 1 to 3, preferably 1-2 fatty acid groups per molecule. The polyhydric alcohol moiety of the ester can be * ethylene glycol, glycerol, poly (eg, di-, tri-, tetra, penta-, and / or hexa-) glycerol, xylitol, sucrose, eptritol, pentaerythritol, sorbitol or sorbitan Sorbitan esters and polyglycerol monostearate are particularly preferred. The fatty acid portion of the ester is usually derived from fatty acids having from 12 to 30, preferably from 16 to 20, carbon atoms, typical examples of said fatty acids being lauric acid, myristic acid, palmitic acid, stearic acid and acid behenic The highly preferred optional nonionic softening agents for use in the present invention are the sorbitan esters, which are sorbitol dehydrated product, and the glycerol esters. Commercial sorbitan monostearate is a suitable material. Also useful are mixtures of sorbitan etherate and sorbitan palrnite having weight ratios of stearate / palmitate ranging from about 10: 1 to about 1:10, and 1,5-sorbitan esters. Glycerol and polyglycerol esters, especially ono and / or glycerol, diglycerol, triglycerol and polyglycerol esters, are preferred herein (e.g., polyglycerol monostearate with a trade name of Radiasurf 7248). Useful glycerol and polyglycerol esters include monoesters with stearic, oleic, palmitic, lauric, isostearic, ironic and / or behenic acids and the diesters of stearic, oleic, palmitic, lauric, isoesteapic, behenic and / or myristic acids. It is understood that the typical monoster contains some di and tri ester, etc. "Glycerol esters" also include polyglycerol esters, e.g., diglycerol to octaglycerol. The polyglycerol polyols are formed by condensing glycepine or epichlorohydrin together to link the glycerol moieties through ether linkages. Mono- and / or diesters of the polyglycerol polyols are preferred, the fatty acyl groups typically being those described above for the sorbitan and glycerol esters.

Dye fixatives Another essential component of the laundry composition according to the invention are dye fixatives. Dye fixing agents or "fixatives" are commercially available, well-known materials that are designed to improve fixation during washing of fabric dyes by minimizing the loss of fabric dye. However, the combination of said fixatives with cellulase in the rinse is used in the present invention to improve the overall appearance of the tolas. Many dye fixatives are cationic, and are based on several organic nitrogen compounds that are quaternized or otherwise charged. Loe fixers are available under various trade names from several suppliers. Representative examples include CROSC0L0R PMF (July, 1981, Code No. 7894) and CROSCOLR NOFF (January 1988, Code No. 8544) of Crosfield; INDOSOL E-50 (February 17, 1984, Ref. No. 6008.35.84, based on polyethylenenea) from Crosfield; INDOSOL E-50 (February 27, 1984, Ref. No. 6008.35.84, based on polyethylene-amine) from Sandoz; ANDOFIX TPS, which is also available from Sandoz and is a preferred cationic fixative for use in the present and ANDOFTX UE (cationic resinous compounds). If used, said dye fixatives will be employed with the cellulase in the rinse bath at levels of at least about 0.04 ppm, typically from about 0.04 ppm to about 4,000 ppm, depending on the product used (concentrate or diluted) and also the rinsing levels. Other cationic dye fixing agents are described in "Aftertreat ents for irnprovmg the fastness of dyes on textile fibers" by Chpstopher C. Cool (REV PROG. CLORATION Vol. 12, 1982). Dye fixing agents suitable for use in the present invention are ammonium compounds such as fatty acid-diarynin v. Condensates. gr. hydrochloride, hydrochloride, acetate, methosulfate and benzylhydrochloride hydrate, oleic acid methyldiethylmelanin, monostearylethylenediaminetrimethylammonium methosulfate and oxidized products of tertiary amines, derivatives of polymeric alkyldiamines, polyacrylamide cyanuric chloride condensates and aminated glycerol dichlorhydrins. The amount of dye fixing agent to be employed in the composition of the invention is preferably from 0.01% to 50% by weight of the composition, most preferably from 0.1% to 25% by weight, most preferably 0.5% by weight. 10% by weight.

SL the fabric softening composition is formulated with either a pre-soaking composition or as a spray composition for pre-treatment in place of a composition that is added during rinsing, the level of coloring fixing agent can be up to 80% by weight of the composition.

Optional ingredients Fully formulated fabric softening compositions preferably contain, in addition to the fabric softening actives such as those presented in formula T or TT, one or more of the following effective ingredients to inhibit the transfer of dyes from one fabric to another during the washing process . Especially suitable polirnecic color-transfer inhibiting agents are polyarnine N-oxide polymers, copolymers of N-vmylpyrrolidone and N-inylimidazole, polyvinylpyrrolidone polymers or combinations thereof. a) Polyamine N-oxide polymers The polyamide N-oxide polymers suitable for use herein contain units having the following structural formula: P (I) fix where P is a polimepable unit, where the group R-N-0 can be set to, or where the group R-N-0 forms part of the polirnectable unit or a combination of both.

A is NC (0), C02, CIO), -0-, -S-, -N-; x is 0 or 1; R are aliphatic, aliphatic ethoxy, aromatic, heterocyclic or alicyclic groups or any combination thereof where the nitrogen of the group N-0 can be fixed or where the nitrogen of the group N-0 is part of these groups. The group N-0 can be represented by the following general structures: 0 0 (R1) x - N ~ (E2) y = N- (R1) x (R3) z wherein R1, R2 and R3 are aliphatic, aromatic, heterocyclic or alicyclic groups or combinations thereof, x and / or yy / oz is 0 or 1 and wherein the nitrogen of the group N-0 may be fixed or where the nitrogen of the group N-0 forms part of these groups. The group N-0 may be part of the polybleatable unit (P) or it may be attached to the polymeric base structure or a combination of both. Suitable polyamide N-ors wherein the N-0 group or part of the polible unit comprises polyamine N-oxides wherein R is selected from allytic, aromatic, alicyclic or heterocyclic groups. A class of said polyarnine N-oxides comprises the group of polyarnine N-oxides wherein the nitrogen of the group N-0 is part of the group R. The preferred polyarnine N-oxides are those wherein R is a heterocyclic group. ico tal co or pyridine, pyrrole, imidazole, pyrrolidine, pipepdine, quinolma, ac idma and derivatives thereof. Another class of polyarnine N-oxides comprises the group of polyamphenid N-oxides wherein the nitrogen of the group N-0 is attached to the R group. Other suitable polyarnine N-oxides are the polyamine oxides to which the group N-0 is fixed to the polyrneable unit. A preferred class of these polyarnine N-oxides are the polyacrylamide N-oxides having the general formula (I) wherein R is an aromatic, heterocyclic or alicyclic group wherein the nitrogen of the functional group N-0 is part of said group R. Examples of these classes are polyarynin oxides wherein R is a heterocyclic compound such as pipdine, pyrrole, i-idazole and derivatives thereof. Another preferred class of polyamine N-oxides are the polyolefin oxides having the general formula (I) wherein R is an aromatic, heterocyclic or alicyclic group wherein the 1") The nitrogen of the functional group N-0 is attached to said R groups. Examples of these classes are polyarynin oxides wherein the R groups can be aromatic such as phenyl. Any * polymer base structure can be used as long as the amine oxide polymer formed is soluble in water and has dye transfer inhibiting properties. Examples of suitable polyrnene base structures are polymers, polyalkylenes, polyesters, polyethers, polyarynides, polyimides, polyacrylates and mixtures thereof. The N-oxide or amine polymers of the present invention typically have an amine to amine N-oxide ratio of 10: 1 to 1: 1000000. However, the amount of amine oxide groups present in the polyarynn oxide polymer can be varied by appropriate copolymerization or by an appropriate degree of N-oxidation. Preferably, the ratio of amine to amine N-oxide is from 2: 3 to 1: 1000000. Most preferably, from 1: 4 to 1: 000000, most preferably still from 1: 7 to 1: 1000000. The polymers of the present invention actually encompass random or block copolymers wherein one type of monomer is an amine N-oxide and in another type of monomer it is either? N N-amine oxide or not. The amine oxide unit of the polyamine N-oxides have a PKa < 10, preferably PKa < 7, most preferably PKa < 6. Polyamine oxides can be obtained in almost any degree of polishing. The degree of polymerization is not critical as long as the material has the desired water solubility and the desired dye suspension power. Typically, the average molecular weight is on the scale of 500 to 1,000,000; preferably 1,000 to 50,000, most preferably 2,000 to 30,000, most preferably even 3,000 to 20,000. b) Copolymers of N-vinylpyrrolidone and N-vinylimidazole The polymers of N-vim li idazole and N-vinylpyrrolidone used in the present invention have a molecular weight of from 5,000 to 1,000,000, most preferably from 20,000 to 200,000. The polymers highly preferred for used in the compositions according to the present invention comprise a polymer selected from copolymers of N-vinylimidozole and N-vinylpyrrolidone wherein said polymer has an average molecular weight scale of 5., 000 to 50,000, most preferably from 8,000 to 30,000, most preferably even from 10,000 to 20,000. The average molecular weight scale was determined by light scattering as described in Barth H.G. and Mays 3.H. Chemical Analysis Vol. 113, "Modern Methods of Polyner Charactenzation". Highly preferred polymers have a molecular weight of from 5,000 to 50,000, most preferably from 8,000 to 30,000, most preferably from 10,000 to 20,000. The copolymers of N-vinyl imidazole and N-vmvpyrrolidone characterized by having said average molecular weight scale provide excellent dye transfer inhibition properties while not adversely affecting the cleaning performance of the detergent compositions formulated therewith. The preferred copolymers of N ~ v? N? Lmidazole and N-vinyl pyrrolidone have a molar ratio of N-vinylimidazole to N-vinipyrrol Ldone from I to 0.2, most preferably from 0.8 to 0.3, most preferably still from 0.6 to 0.4. c) Polyvinylpyrrolidone The detergent compositions of the present invention can also use polyvinylpyrrolidone ("PVP") having an average molecular weight of from about 2,500 to about 400,000, preferably from about 5,000 to about 200,000, most preferably from about ,000 to approximately 50,000, and u and preferably still from around 5,000 to approximately 15,000. Suitable polyvinyl pyrrolidones are commercially available from ISP Corporation, Ne? York, NY and Montreal, Canada under the product name PVP K-15 (molecular weight of 10,000 with viscosity), PVP K-30 (average molecular weight of 40,000), PVP K-60 (average molecular weight of 160,000), and PVP K-90 (average molecular weight of 360,000). Other polyvinyl pyrrolidones nrz suitable that are commercially available from BASF Corporation include Sokalan HP 165 and Sokalan HP 12; polyvinyl lpyrrolidones known to those skilled in the art in the detergent field (see, for example, EP-O-262,897 and EP-A-256,696). d) Polyvinyloxazolidone The detergent compositions of the present invention can also use polyvinylloxazole donuts as an inhibitor agent for pigmentation of color-ante polnepco.

Said polyvinyloxazolidones have an average molecular weight of 2,500 to 400,000, preferably 5,000 to 200,000, very preferably from 5,000 to 50,000, and most preferably even from 5,000 to 15,000. e) Polyvinyl-idazole The compositions of the present invention can also use polymerase-1-imidazole as a polymerase dye transfer inhibiting agent. Said polyvinyl imidazoles preferably have an average molecular weight of 2,500 to 400,000, preferably from about 5,000 to about 200,000, most preferably from 5,000 to 50,000, and most preferably even from 5,000 to 15,000. Other optional ingredients are stabilizers, such as the well-known antioxidants and reducing agents, soil release polymers, chelating agents, preservatives, optical brighteners, anti-ignition agents, anti-scavenging agents and the like. The invention will now be illustrated in the following non-limiting examples.

EXAMPLES EXAMPLE 1 Compositions that are added during rinsing that have cellulase and color fixative. % (p /?) Levels Vol rnáx. Vol. Mm Europe 25 15 E.U.A. 80 60 Japan 60 20 Diluted doses 110 Concentrates 35 Levels of rinsing in ppm for Z of levels in the product Level in the product (%? /?) Diluted Concentrates 0.1 Min Max Min Max EUROPE 4.40 7.33 1.40 2.33 E.U.A 1.38 1.83 0.44 0.58 JAPAN 1.83 5.50 0.58 1.75 Global minimum 0.44 Global maximum 7.33 Level in the product (Z p / p) Diluted Concentrates 0.5 Min Max Min Max EUROPE 22.00 36.67 7.00 11.67 E.U.A 6.88 9.17 2.19 2.92 JAPAN 9.17 27.50 2.92 8.75 Global minimum 2.19 Global maximum 36.67 Level, in the product (% p / p) Concentrated dilute 10 Mi Max Min Max EUROPE 440.00 733.33 140.00 233.33 E.U.ñ 137.50 183.33 43.75 58.33 JAPAN 183.33 550.00 58.33 175.00 Global me imo 43.75 Global max 733.33 Level in the product Diluted Concentrates (% w / w) 25 Min Max Min Max EUROPE 1100.00 1833.33 350.00 583.33 E.U.A 343.75 458.33 109.38 145.83 JAPAN 458.33 1375.00 145.83 437.50 Global minimum 109.38 Global maximum 1833.33 Level in the product Diluted Concentrates (% p / p) 50 Min M x Min Max EUROPE 2200.00 3666.67 700.00 1166.67 E.U.A 687.50 916.67 218.75 291.67 JAPAN 916.67 2750.00 291.67 875.00 Global minimum 218.75 Global, maximum 3666.67 Blue cotton socks with strong color release were washed in a 10 cycle test with compositions A, B, C and D. The softener active used is N, Nd? (2-tallow? L? Ox? ethyl) -N, Nd? met? larpmonium and the cellulase used in the preparation consisted essentially of a homogeneous endoglucanase component, which is immunoreactive with an antibody produced against a highly purified 43kD cellulase derived from Hurnicola insolens DSM 1800. The values of color are measured with a Spectraflash meter (Data color Int.). Colorant contents and delta E values are given vs. new socks not treated.

• The difference is calculated against the values without softener. The more positive the difference, the better the maintenance of color. These results show the combination of Sandofix T S and the cellulase used improves color care by providing benefits for lint removal and color-enhanced maintenance under real wash conditions.

Claims (10)

NOVELTY OF THE INVENTION CLAIMS

1. - A laundry composition comprising a cellulase enzyme and a dye fixing agent characterized in that the enzyme is present at a level ranging from 0.05 CEVU / gram to 125 CEVU / gram of finished product and the coloring fixing agent is present at levels comprised between 0.01% and 50% by weight.

2. A laundry composition according to claim 1, further characterized in that the cellulase enzyme consists essentially of a homogeneous endoglucanase component, which is in unreactive with an antibody produced against a highly purified 43 kD cellulase derived from Humicola insolens, DSM 1800, or that is homologous to said endoglucanase of 43kD.

3. A laundry composition according to claim 1, further characterized in that the cationic dye fixing agent is selected from the group consisting of aliphatic polyamines, fatty acid-amine condensates, oxidized products of tertiary amines, derivatives of polymeric alkyldiamines. , condensates of polyamine-cyanuric chloride and glycerol dichlorohydrins to inadas, derivatives of methylolamide, condensation products of formaldehyde and derivatives of cyanamide.

4. - A laundry composition according to claim 1, further characterized in that the composition is a detergent composition.

5. The laundry composition according to claim 1, further characterized in that the composition is a fabric softening composition.

6. A fabric softening composition according to claim 5, further characterized in that the composition contains a quaternary ammonium softening agent, an amine precursor softening agent, or mixtures thereof.

7. A fabric softening composition according to claim 6, further characterized in that the quaternary ammonium softening agent is N, Nd? (2-tallowyl-l-ox? -ethyl) -N, Nd? Rnet chloride. Ammonium

8. A fabric softening composition according to claim 7, further characterized in that the tallow chains in said quaternary ammonium softening agent are derived from fatty acids having an iodine value (VY) of from 5 to 25 and a by weight of c? s ~ trans isomer greater than about 30/70.

9. A fabric softening composition according to claim 7, further characterized in that the tallow chains in said quaternary ammonium softening agent are derived from fatty acids having an iodine value (VY) greater than 25.

10. - A method for improving the maintenance of color depth of washed fabrics comprising the steps of contacting the fabric with a composition according to claim 5.