GB2311543A - Tripeptide builder for bleaching and detergent compositions - Google Patents

Description

BUILDER MATERIAL Technical field This invention relates to a tripeptide builder material, containing phenylalanine, which acts as a (heavy) metal sequestering or chelating agent.

The tripeptide can also act as a bleach stabilizer, when included in an oxygen-releasing bleach system, containing a peroxy compound. This inclusion permits a controlled bleaching action, when the bleaching composition is used in a washing process.

Background to the invention In the past phosphorus-containing builders were found to be good chelating agents and they were widely used. Through research done in the past years several biodegradable alternatives for polyphosphate containing sequestering or chelating materials have been found, which possess similar builder characteristics, for example copolymers of acrylic/maleic polymeric builders and polycarboxylate builders. Alsopolyamino acid agents have been found to be usable in detergent compositions as builders or dispersing agents, as taught for example in EP-A- 454126 which describes polyamino acids, including polyaspartic acid, as biodegradable builders/co-builders in the formulation of detergents.

The Applicants have now found that tripeptides, containing phenylalanine, are excellent (heavy) metal sequestering or chelating agents. Also tripeptides of aminoacid derivatives have been found to show good sequestering or chelating benefits.

Additionally, polymeric tripeptides have been found to be good builder material for (heavy) metal chelation or sequestering. The tripeptides and the polymeric tripeptides may be included in essentially any cleaning or food product.

The tripeptides of the present invention, are either derivable from naturally occurring, peptide containing compounds or obtainable from natural occurring aminoacids. Preferred tripeptides are compounds consisting of the aminoacids phenylalanine, histidine and aspartic acid. These tripeptides have shown to be very specific sequestering or chelating agents for heavy metal ions, especially copper ions. These excellent copper ion sequestering or chelating properties make the tripeptides good bleach stabilizers, when combined with a oxygen-releasing bleach system and used in a bleaching process.

The use of peroxy compounds for bleaching purposes is well known in the art. It is well known that the presence of certain heavy metal ions may catalyze peroxy bleach decomposition. Such heavy metal ions are inevitably present in the wash liquors of laundry and dish washing processes, being components of many food and/or body soils.

The use of a stabilizing agent to minimize the rapid decomposition of the peroxy compound is well established in the peroxy bleaching art, because, among other things, the oxygen released by such rapid decomposition of the peroxy compound in general has no bleaching action as contrasted with the normal autodecomposition of the peroxy compound which does result in a bleaching action. In fact, the rapid decomposition of the peroxy compound may be harmful to the fabrics in the bleaching process.

Heavy metal sequestering or chelating agents have been employed to control the levels of free heavy metal ions in the aqueous peroxy solutions used in bleaching processes, thus acting as bleach stabilizers by preventing the heavy metal ion catalyzed decomposition of the peroxy bleaches. By heavy metal ion sequestrant it is meant herein components which act to sequester (chelate) heavy metal ions. These components may also have calcium and magnesium chelation capacity, but preferentially they show selectivity to binding heavy metal ions such as iron, manganese and copper.

Summary of the invention According to the present invention there is provided a tripeptide builder material characterized in that it contains phenylalanine. The tripeptide builder material preferably consists of the aminoacids histidine, phenylalanine and aspartic acid.

In accord with the present invention there is also provided a polymeric tripeptide builder material, characterized in that it consists of repeated units of the tripeptide.

The tripeptide and polymeric tripeptide builder material can be included in a bleaching composition containing an oxygen-releasing bleach system. When included in a bleaching composition the tripeptide and polymeric tripeptide have excellent bleach stabilizing properties. Preferably said oxygen releasing bleach system contains a hydrogen peroxide source and a peroxyacid bleach precursor.

The bleaching compositions in accordance with the invention may be used in essentially any detergent and in any bleaching process.

Detailed desclintion of the invention Tripeptide The essential feature of the present invention is a tripeptide builder material, containing phenylalanine. Herein, the term 'tripeptide' means a peptide, consisting of three aminoacid units.

Polymeric tripeptides, that is a polymer comprising repeated tripeptide units, are also envisaged as builder materials in accordance with the present invention. The tripeptide units may be randomly devided along the polymeric tripeptide chain. The number of repeated tripeptide units in the polymeric tripeptide, and therefore the molecular weight ofthe polymeric tripeptide, may vary.

The tripeptides may be either derived from naturally occurring peptide containing compounds or synthesized from naturally occurring aminoacids.

The tripeptides and polymeric tripeptides can for example be synthesized by thermal polymerization reactions known in the art ( for example S.W. Fox, K. Harada, JACS. 1958, 80, 2694 and JACS.1960, 82, 3715).

Bleaching composition Additionally the tripeptide or polymeric tripeptide of the invention can be included in a bleaching composition which contains an oxygen-releasing bleaching system.

The tripeptides or polymeric tripeptides of the present invention, when included in bleaching compositions, are excellent bleach stabilizers. The bleaching compositions herein are useful in the bleaching of cellulosic fibrous material. The term cellulosic fibrous material as used herein has reference to wood, cotton, linen, jute and other materials of a cellulosic nature, and also includes individual fibres, for example wood pulp or cotton fibre, as well as yarns, tows, webs, fabrics (woven or non-woven) and other aggregates of such fibres. The bleaching compositions in accordance with the invention are also useflil in the bleaching of synthetic textiles including polyamides, viscose, rayon, and polyesters.

The bleaching compositions in accordance with the invention are also useful in cleaning compositions. These cleaning compositions may be used in essentially any washing, laundering or cleaning processes in which bleaching is required. Thus, the cleaning compositions may be used in home or industrial laundering or automatic dish washing processes, as laundry additive compositions, stain pretreat compositions, carpet and upholstery cleaners, and in any process involving the cleaning of hard surfaces such as bottle washing, dairy cleaning and kitchen and bathroom cleaning processes, including for example toilet bowl cleaning.

In processes for the bleaching of cellulosic fibre or synthetic textiles the bleaching compositions of the invention are used in an aqueous solution.

The most preferred peroxy compound for use in such processes is hydrogen peroxide. The pH of the aqueous peroxy solution is often adjusted with inorganic alkali metal basic materials, such as sodium hydroxide, sodium carbonate, sodium silicate and mixtures thereof. The optimum pH lies somewhere between 7.5 to 12.5.

Whilst silicates, especially sodium silicate may be used to provide alkalinity in the peroxy solutions for use in the bleaching of cellulosic fibres its tendency to form as deposits on the fibres being bleached means that its use is preferably kept to a minimum. Most preferably, the peroxy solutions for use in the bleaching of cellulosic fibres and synthetic textiles using the bleaching compositions of the invention contain no sodium silicate.

The methods for bleaching using the peroxy solutions containing the bleaching compositions of the present invention vary widely, as for example, from using the peroxy solutions at temperatures of from about 70"C to about 100 C for periods of time from about 30 minutes to about 6-8 hours, as well as continuous bleaching methods which entail the use of the peroxy solutions at normal temperatures, i.e., about 25"C and contacting the cellulose material by saturation, removing the excess moisture and exposing the cellulose material to saturated steam at temperatures form about 100"C to about 135 C, for period of time from a few seconds (about 20) to about 1 hour and even longer in some cases. U.S. Patents 2,839,353, 2,960,383, and 2,983,568 are illustrative of being representative of continuous peroxy bleaching methods.

Oxvgen-releasing bleaching system The bleach composition, containing the tripeptide or polymeric tripeptide, contains an oxygen-releasing bleaching system, containing an oxygen bleaching species including for example, inorganic perhydrate bleaches or organic peroxyacids.

In a preferred execution the bleaching system contains a hydrogen peroxide source and a peroxyacid bleach precursor compound. The production of the peroxyacid occurs by an in situ reaction of the precursor with a source of hydrogen peroxide. Preferred sources of hydrogen peroxide include inorganic perhydrate bleaches.

Inorganic perhydrate bleaches Inorganic perhydrate salts are a preferred source of hydrogen peroxide.

These salts are normally incorporated in the form of the sodium salt at a level of from 1% to 95% by weight, more preferably from 10% to 90% by weight and most preferably from 20% to 80% by weight of the bleaching compositions. When incorporated in a bleaching composition which is comprised in a detergent composition in accordance with the present invention, the inorganic perhydrate salts are preferably present at a level of from 1% to 40% by weight, more preferably from 2% to 30% by weight and most preferably from 5% to 25% by weight of the detergent composition.

Examples of inorganic perhydrate salts include perborate, perphosphate, persulfate and persilicate salts. A preferred inorganic perhydrate salt is an alkali or alkaline earth metal percarbonate salt.

Sodium percarbonate, which is a preferred percarbonate salt for inclusion in bleach compositions in accordance with the invention, is an addition compound having a formula corresponding to 2Na2CO3.3H202, and is available commercially as a crystalline solid. The percarbonate is most preferably incorporated into such compositions in a coated form which provides in product stability.

Sodium perborate can be in the form of the monohydrate of nominal formula NaBO2H202 or the tetrahydrate NaBO2H202.3H2O.

The inorganic perhydrate salts are normally the alkali metal salts. The inorganic perhydrate salt may be included as the crystalline solid without additional protection. For certain perhydrate salts however, the preferred executions of such granular compositions utilize a coated form of the material which provides better storage stability for the perhydrate salt in the granular product.

A suitable coating material providing in product stability comprises mixed salt of a water soluble alkali metal sulphate and carbonate. Such coatings together with coating processes have previously been described in GB 1,466,799, granted to Interox on 9th March 1977. The weight ratio of the mixed salt coating material to percarbonate lies in the range from 1: 200 to 1: 4, more preferably from 1: 99 to 1: 9, and most preferably from 1: 49 to 1:19. Preferably, the mixed salt is of sodium sulphate and sodium carbonate which has the general formula Na2SO4.n.Na2CO3 wherein n is form 0.1 to 3, preferably n is from 0.3 to 1.0 and most preferably n is from 0.2 to 0.5.

Other coatings which contain silicate (alone or with borate salts or boric acids or other inorganics), waxes, oils, fatty soaps can also be used advantageously within the present invention.

Potassium peroxymonopersulfate is another inorganic perhydrate salt of use in the detergent compositions herein.

Peroxvacid bleach precursor compound Peroxyacid bleach precursors are preferably incorporated at a level of from 1% to 50% by weight, more preferably from 2% to 30% by weight, most preferably from 5% to 20% by weight of the bleaching compositions.

When incorporated in a bleaching composition which is comprised in a detergent composition in accordance with the invention, the peroxyacid bleach precursors are preferably present at a level of from 0.5% to 20% by weight, more preferably from 1% to 15% by weight and most preferably from 1.5% to 10% by weight of the detergent composition.

Suitable peroxyacid bleach precursors typically contain one or more N- or 0- acyl groups, which precursors can be selected from a wide range of classes. Suitable classes include anhydrides, esters, imides and acylated derivatives of imidazoles and oximes. Examples of useful materials within these classes are disclosed in GB-A-1586789. Suitable esters are disclosed in GB-A-836988, 864798, 1147871,2143231 and EP-A-0170386.

N-acvlated lactam precursor compound N-acylated precursor compounds of the lactam class are disclosed generally in GB-A-855735. Whilst the broadest aspect of the invention contemplates the use of any lactam usefil as a peroxyacid precursor, preferred materials comprise the caprolactams and valerolactams.

Suitable N-acylated lactam precursors have the formula:

wherein n is from 0 to about 8, preferably from 0 to 2, and R6 is H, an alkyl, aryl, alkoxyaryl or alkaryl group containing from 1 to 12 carbons, or a substituted phenyl group containing from 6 to 18 carbon atoms Suitable caprolactam bleach precursors are of the formula:

wherein R1 is H or an alkyl, aryl, alkoxyaryl or alkaryl group containing from 1 to 12 carbon atoms, preferably from 6 to 12 carbon atoms, most preferably R1 is phenyl.

Suitable valero lactams have the formula:

wherein R1 is H or an alkyl, aryl, alkoxyaryl or alkaryl group containing from 1 to 12 carbon atoms, preferably from 6 to 12 carbon atoms. In highly preferred embodiments, R1 is selected from phenyl, heptyl, octyl, nonyl, 2,4,4-trimethylpentyl, decenyl and mixtures thereof.

The most preferred materials are those which are normally solid at < 300C, particularly the phenyl derivatives, ie. benzoyl valerolactam, benzoyl caprolactam and their substituted benzoyl analogues such as chloro, amino alkyl, alkyl, aryl and alkoxy derivatives.

Caprolactam and valerolactam precursor materials wherein the R1 moiety contains at least 6, preferably from 6 to 12, carbon atoms provide peroxyacids on perhydrolysis of a hydrophobic character which afford nucleophilic and body soil clean-up. Precursor compounds wherein R1 comprises from 1 to 6 carbon atoms provide hydrophilic bleaching species which are particularly efficient for bleaching beverage stains. Mixtures of 'hydrophobic' and 'hydrophilic' caprolactams and valero lactams, typically at weight ratios of 1:5 to 5:1, preferably 1:1, can be used herein for mixed stain removal benefits.

Highly preferred caprolactam and valerolactam precursors include benzoyl caprolactam, nonanoyl capro-lactam, benzoyl valerolactam, nonanoyl valerolactam, 3,5,5-trimethylhexanoyl caprolactam, 3,5,5-trimethylhexanoyl valerolactam, octanoyl caprolactam, octanoyl valerolactam, decanoyl caprolactam, decanoyl valerolactam, undecenoyl caprolactam, undecenoyl valerolactam, (6-octanamidocaproyl)oxybenzene-sulfonate, (6nonanamidocaproyl)oxybenzenesulfonate, (6-decanamidocaproyl)oxybenzenesulfonate, and mixtures thereof. Examples of highly preferred substituted benzoyl lactams include methylbenzoyl caprolactam, methylbenzoyl valerolactam, ethylbenzoyl caprolactam, ethylbenzoyl valerolactam, propylbenzoyl caprolactam, propylbenzoyl valerolactam, isopropylbenzoyl caprolactam, isopropylbenzoyl valerolactam, butylbenzoyl caprolactam, butylbenzoyl valerolactam, tert-butylbenzoyl caprolactam, tertbutylbenzoyl valerolactam, pentylbenzoyl caprolactam, pentylbenzoyl valerolactam, hexylbenzoyl caprolactam, hexylbenzoyl valerolactam, ethoxybenzoyl caprolactam, ethoxybenzoyl valerolactam, propoxybenzoyl caprolactam, propoxybenzoyl valerolactam, isopropoxybenzoyl caprolactam, isopropoxybenzoyl valerolactam, butoxybenzoyl caprolactam, butoxybenzoyl valerolactam, tert-butoxybenzoyl caprolactam, tertbutoxybenzoyl valerolactam, pentoxybenzoyl caprolactam, pentoxybenzoyl valerolactam, hexoxybenzoyl caprolactam, hexoxybenzoyl valerolactam, 2,4,6-trichlorobenzoyl caprolactam, 2,4 ,6-trichlorobenzoyl valerolactam, pentafluorobenzoyl caprolactam, pentafluorobenzoyl valerolactam, dichlorobenzoyl caprolactam, dimethoxybenzoyl caprolactam, 4chlorobenzoyl caprolactam, 2,4-dichlororbenzoyl caprolactam, terephthaloyl dicaprolactam, pentafluorobenzoyl caprolactam, pentafluorobenzoyl valerolactam, dichlorobenzoyl valerolactam, dimethoxybenzoyl valerolactam, 4-chlorobenzoyl valerolactam, 2,4-dichlororbenzoyl valerolactam, terephthaloyl divalerolactam, 4-nitrobenzoyl caprolactam, 4nitrobenzoyl valerolactam, and mixtures thereof.

Perbenzoic acid precursor Essentially any perbenzoic acid precursors are suitable herein, including those of the N-acylated lactam class, which are preferred.

Suitable O-acylated perbenzoic acid precursor compounds include the substituted and unsubstituted benzoyl oxybenzene sulfonates, including for example benzoyl oxybenzene sulfonate:

Also suitable are the benzoylation products of sorbitol, glucose, and all saccharides with benzoylating agents, including for example:

Ac = COCH3; Bz = Benzoyl Preferred perbenzoic acid precursor compounds of the imide type include Nbenzoyl succinimide, tetrabenzoyl ethylene diamine and the N-benzoyl substituted ureas. Suitable imidazole type perbenzoic acid precursors include N-benzoyl imidazole and N-benzoyl benzimidazole and other useful N-acyl group-containing perbenzoic acid precursors include N-benzoyl pyrrolidone, dibenzoyl taurine and benzoyl pyroglutamic acid.

Preferred perbenzoic acid precursors include the benzoyl diacyl peroxides, the benzoyl tetraacyl peroxides, and the compound having the formula:

Phthalic anhydride is another suitable perbenzoic acid precursor compound herein:

Perbenzoic acid derivative precursors Suitable perbenzoic acid derivative precursors include any of the herein disclosed perbenzoic precursors in which the perbenzoic group is substituted by essentially any functional group including alkyl groups.

Cationic peroxyacid precursors Cationic peroxyacid precursor compounds are also suitable herein. Typically such cationic peroxyacid precursors are formed by substituting the peroxyacid part with an ammonium or alkyl ammmonium group, preferably an ethyl or methyl ammonium group.

Cationic peroxyacid precursors are described in U.S. Patents 4,904,406; 4,751,015; 4,988,451; 4,397,757; 5,269,962; 5,127,852; 5,093,022; 5,106,528; U.K. 1,382,594; EP 475,512, 458,396 and 284,292; and in JP 87-318,332.

Examples of preferred cationic peroxyacid precursors are described in UK Patent Application No. 9407944.9 and US Patent Application Nos.

08/298903, 08/298650, 08/298904 and 08/298906.

Suitable cationic peroxyacid precursors include any of the ammonium or alkyl ammonium substituted alkyl or benzoyl oxybenzene sulfonates, Nacylated caprolactams, and monobenzoyltetraacetyl glucose benzoyl peroxides.

A preferred cationically substituted benzoyl oxybenzene sulfonate is the 4 (trimethyl ammonium) methyl derivative of benzoyl oxybenzene sulfonate:

A preferred cationically substituted alkyl oxybenzene sulfonate is the methyl ammonium derivative of 2,3,3-tri-methyl hexanoyloxybenzene sulfonate.

Preferred cationic peroxyacid precursors of the N-acylated caprolactam class include the trialkyl ammonium methylene benzoyl caprolactams, particularly trimethyl ammonium methylene benzoyl caprolactam:

Another preferred cationic peroxyacid precursor is 2-(N,N,N-trimethyl ammonium) ethyl sodium 4-sulphophenyl carbonate chloride.

Alkvl fattv peroxvacid bleach precursors Alkyl fatty peroxyacid bleach precursors form alkyl fatty peroxyacids on perhydrolysis. Preferred precursors of this type give rise to peracetic acid on perhydrolysis.

Preferred alkyl fatty peroxyacid precursor compounds of the imide type include the N-,N,N1N1 tetra acetylated alkylene diamines wherein the alkylene group contains from 1 to 6 carbon atoms, particularly those compounds in which the alkylene group contains 1, 2 and 6 carbon atoms.

Tetraacetyl ethylene diamine (TAED) is particularly preferred.

Amide substituted peroxyacid bleach precursors Another preferred class of peroxyacid bleach activator compounds are the amide substituted compounds of the following general formulae:

wherein R1 is an alkyl or aryl group with from 1 to 14 carbon atoms, R2 is an alkylene, arylene, and alkarylene group containing from 1 to 14 carbon atoms, and R5 is H or an alkyl, aryl, or alkaryl group containing 1 to 10 carbon atoms and L can be essentially any leaving group. R1 preferably contains from 6 to 12 carbon atoms. R2 preferably contains from 4 to 8 carbon atoms. R1 may be straight chain or branched alkyl containing branching, substitution, or both and may be sourced from either synthetic sources or natural sources including for example, tallow fat. Analogous structural variations are permissible for R2. The substitution can include alkyl, aryl, halogen, nitrogen, sulphur and other typical substituent groups or organic compounds. R5 is preferably H or methyl. R1 and R5 should not contain more than 18 carbon atoms in total. L may be selected from any of the leaving groups described hereinbefore for the analogues having R1 as an aryl or alkaryl group. Amide substituted bleach activator compounds of this type are described in EP-A-0 170386.

The L group must be sufficiently reactive for the reaction to occur within the optimum time frame (e.g., a wash cycle) However, if L is too reactive, this activator will be difficult to stabilize for use in a bleaching composition.

These characteristics are generally paralleled by the pKa of the conjugate acid of the leaving group, although exceptions to this convention are known.

Ordinarily, leaving groups that exhibit such behaviour are those in which their conjugate acid has a pKa in the range of from 4 to 13, preferably from 6 to 11 and most preferably from 8 to 11.

Preferred bleach precursors are those wherein R1, R2 and R5 are as defined for the amide substituted compounds and L is selected from the group consisting of:

and mixtures thereof, wherein R1 is an alkyl, aryl, or alkaryl group containing from 1 to 14 carbon atoms, R3 is an alkyl chain containing from 1 to 8 carbon atoms, R4 is H or R3, and Y is H or a solubilizing group.

The preferred solubilizing groups are -SO3M+, -CO2-M+,-SO4-M+, -N+(R3)4X3 and O < --N(R )3 and most preferably -SO3M+ and -CO2-M+ wherein R3 is an alkyl chain containing from 1 to 4 carbon atoms, M is a cation which provides solubility to the bleach activator and X is an anion which provides solubility to the bleach activator. Preferably, M is an alkali metal, ammonium or substituted ammonium cation, with sodium and potassium being most preferred, and X is a halide, hydroxide, methylsulfate or acetate anion. It should be noted that bleach activators with a leaving group that does not contain a solubilizing groups should be well dispersed in the bleaching solution in order to assist in their dissolution.

Organic peroxyacids The compositions may contain as components of the bleaching system organic peroxyacids, typically at a level of from 2% to 30% by weight, more preferably from 5% to 20% by weight of the bleaching composition. When the bleaching compositions are comprised in a detergent composition in accordance with the present invention, the organic peroxyacid is preferably present at a level of from 1 % to 15% by weight and more preferably from 1 % to 10% by weight of the detergent composition.

A preferred class of organic peroxyacid compounds are the amide substituted compounds of the following general formulae:

wherein R1 is an alkyl, aryl or alkaryl group with from 1 to 14 carbon atoms, R2 is an alkylene, arylene, and alkarylene group containing from 1 to 14 carbon atoms, and R5 is H or an alkyl, aryl, or alkaryl group containing 1 to 10 carbon atoms. R1 preferably contains from 6 to 12 carbon atoms. R2 preferably contains from 4 to 8 carbon atoms. R1 may be straight chain or branched alkyl, substituted aryl or alkylaryl containing branching, substitution, or both and may be sourced from either synthetic sources or natural sources including for example, tallow fat. Analogous structural variations are permissible for R2. The substitution can include alkyl, aryl, halogen, nitrogen, sulphur and other typical substituent groups or organic compounds. R5 is preferably H or methyl. R1 and R5 should not contain more than 18 carbon atoms in total. Amide substituted organic peroxyacid compounds of this type are described in EP-A-01 70386.

Other organic peroxyacids include diperoxydodecanedioc acid, diperoxytetradecanedioc acid, diperoxyhexadecanedioc acid, mono- and diperazelaic acid, mono- and diperbrassylic Examples of inorganic perhydrate salts include perborate, percarbonate, perphosphate, persulfate and persilicate salts. The inorganic perhydrate salts are normally the alkali metal salts. Salts in which hydrogen peroxide is clathrated are described in GB-A-1494953.

Detergent composition The tripeptide and the polymeric tripeptides of the invention and also the bleach composition in accordance with the invention can be comprised in detergent compositions. The precise nature of the detergent compositions, and levels of incorporation of different components thereof will depend on the physical form of the composition, and the precise nature of the laundering operation for which it is to be used.

The detergent compositions may for example, be formulated as hand and machine laundry detergent compositions, including laundry additive compositions and compositions suitable for use in the pretreatment of stained fabrics.

The detergent composition, comprising the bleach composition of the invention preferably contain one or more additional detergent components selected from surfactants, builders, organic polymeric compounds, additional enzymes, bleach catalysts, suds suppressors, lime soap dispersants, soil suspension and anti-redeposition agents and corrosion inhibitors.

Surfactant The detergent compositions in accordance with the invention preferably contain as an additional detergent component a surfactant selected from anionic, cationic, nonionic ampholytic, amphoteric and zwitterionic surfactants and mixtures thereof.

The surfactant is typically present at a level of from 0.1% to 60% by weight.

More preferred levels of incorporation of surfactant are from 1% to 35% by weight, most preferably from 1 % to 20% by weight.

A typical listing of anionic, nonionic, ampholytic, and zwitterionic classes, and species of these surfactants, is given in U.S.P. 3,929,678 issued to Laughlin and Heuring on December 30, 1975. Further examples are given in "Surface Active Agents and Detergents" (Vol. I and II by Schwartz, Perry and Berch). A list of suitable cationic surfactants is given in U.S.P.

4,259,217 issued to Murphy on March31, 1981.

Where present, ampholytic, amphoteric and zwitteronic surfactants are generally used in combination with one or more anionic and/or nonionic surfactants.

Anionic surfactant Essentially any anionic surfactants useful for detersive purposes can be included in the compositions. These can include salts (including, for example, sodium, potassium, ammonium, and substituted ammonium salts such as mono-, di- and triethanolamine salts) of the anionic sulfate, sulfonate, carboxylate and sarcosinate surfactants.

Other anionic surfactants include the isethionates such as the acyl isethionates, N-acyl taurates, fatty acid amides of methyl tauride, alkyl succinates and sulfosuccinates, monoesters of sulfosuccinate (especially saturated and

A preferred source for alkyl sulfates herein are the C14, C16 or C18 alkyl groups derived from coconut oils or palm oils. Preferably the so obtained C14, C16 and C18 alkyl sulfates are combined with anionic C12 alkylethoxy sulfate and/ or nonionic polyhydroxy fatty acid amide surfactants, which are both derivable from the same palm oils or coconut oils. This preferred combination provides a total surfactant system, derived from either palm oil cut or coconut oil cut. Preferably, in this surfactant system the ratio of the anionic surfactant to the nonionic surfactant is from 1:2 to 2: 1, more preferably from 1:1.

Alkyl ethoxysulfate surfactants are preferably selected from the group consisting of the C6-C 18 alkyl sulfates which have been ethoxylated with from about 0.5 to about 20 moles of ethylene oxide per molecule. More preferably, the alkyl ethoxysulfate surfactant is a C6-C18 alkyl sulfate which has been ethoxylated with from about 0.5 to about 20, preferably from about 0.5 to about 5, moles of ethylene oxide per molecule.

Anionic sulfonate surfactant Anionic sulfonate surfactants suitable for use herein include the salts of C- C20 linear alkylbenzene sulfonates, alkyl ester sulfonates, C6-C22 primary or secondary alkane sulfonates, C6-C24 olefin sulfonates, sulfonated polycarboxylic acids, alkyl glycerol sulfonates, fatty acyl glycerol sulfonates, fatty oleyl glycerol sulfonates, and any mixtures thereof.

Preferred detergent compositions comprise oleoyl sarcosinate and alkyl glycerol sulfate. This combination of surfactants has been found to have very good greasy stain removal performance. The weight ratio of oleoyl sarcosinate to alkyl glycerol sulfate is preferably from 1:2 to 3:1.

Anionic carboxvlate surfactant Anionic carboxylate surfactants suitable for use herein include the alkyl ethoxy carboxylates, the alkyl polyethoxy polycarboxylate surfactants and the soaps ('alkyl carboxyls'), especially certain secondary soaps as described herein.

Preferred alkyl ethoxy carboxylates for use herein include those with the formula RO(CH2CH20)X CH2C00-M+ wherein R is a C6 to Clg alkyl group, x ranges from O to 10, and the ethoxylate distribution is such that, on a weight basis, the amount of material where x is 0 is less than about 20 %, and the amount of material where x is greater than 7, is less than about 25 %, the average x is from about 2 to 4 when the average R is C13 or less, and the average x is from about 3 to 10 when the average R is greater than C13, and M is a cation, preferably chosen from alkali metal, alkaline earth metal, ammonium, mono-, di-, and tri-ethanol-ammonium, most preferably from sodium, potassium, ammonium and mixtures thereof with magnesium ions. The preferred alkyl ethoxy carboxylates are those where R is a C12 to C18 alkyl group.

Alkyl polyethoxy polycarboxylate surfactants suitable for use herein include those having the formula RO-(CHRl-CHR2-O)-R3 wherein R is a C6 to C18 alkyl group, x is from 1 to 25, R1 and R2 are selected from the group consisting of hydrogen, methyl acid radical, succinic acid radical, hydroxysuccinic acid radical, and mixtures thereof, wherein at least one R1 or R2 is a succinic acid radical or hydroxysuccinic acid radical, and R3 is selected from the group consisting of hydrogen, substituted or unsubstituted hydrocarbon having between 1 and 8 carbon atoms, and mixtures thereof.

Anionic secondarv soap surfactant Preferred soap surfactants are secondary soap surfactants which contain a carboxyl unit connected to a secondary carbon. The secondary carbon can be in a ring structure, e.g. as in p-octyl benzoic acid, or as in alkyl substituted cyclohexyl carboxylates. The secondary soap surfactants should preferably contain no ether linkages, no ester linkages and no hydroxyl groups. There should preferably be no nitrogen atoms in the head-group (amphiphilic portion). The secondary soap surfactants usually contain 11-15 total carbon atoms, although slightly more (e.g., up to 16) can be tolerated, e.g. p-octyl benzoic acid.

The following general structures further illustrate some of the preferred secondary soap surfactants: A. A highly preferred class of secondary soaps comprises the secondary carboxyl materials of the formula R3 CH(R4)COOM, wherein R3 is CH3(CH2)x and R4 is CH3(CH2)y, wherein y can be O or an integer from 1 to 4, xis an integer from 4 to 10 and the sum of (x + y) is 6- 10, preferably 7-9, most preferably 8.

B. Another preferred class of secondary soaps comprises those carboxyl compounds wherein the carboxyl substituent is on a ring hydrocarbyl unit, i.e., secondary soaps of the formula R5-R6-COOM, wherein R5 is C7-C10, preferably C8-C9, alkyl or alkenyl and R6 is a ring structure, such as benzene, cyclopentane and cyclohexane. (Note: R5 can be in the ortho, meta or para position relative to the carboxyl on the ring.) C. Still another preferred class of secondary soaps comprises secondary carboxyl compounds of the formula CH3(CHR)k-(CH2)m-(CHR)n CH(COOM)(CHR)0-(CH2-(CHR)q-CH3, wherein each R is Cl-C4 alkyl, wherein k, n, o, q are integers in the range of 0-8, provided that the total number of carbon atoms (including the carboxylate) is in the range of 10 to 18.

In each of the above formulas A, B and C, the species M can be any suitable, especially water-solubilizing, counterion.

Especially preferred secondary soap surfactants for use herein are water soluble members selected from the group consisting of the water-soluble salts of 2-methyl-1 -undecanoic acid 2-ethyl-1-decanoic acid, 2-propyl-1 - nonanoic acid, 2-butyl-1 -octanoic acid and 2-pentyl-1 -heptanoic acid.

Alkali metal sarcosinate surfactant Other suitable anionic surfactants are the alkali metal sarcosinates of formula R-CON (R1) CH2 COOM, wherein R is a C5-C17 linear or branched alkyl or alkenyl group, R1 is a C1-C4 alkyl group and M is an alkali metal ion. Preferred examples are the myristyl and oleoyl methyl sarcosinates in the form of their sodium salts.

Nonionic surfactant Essentially any anionic surfactants useful for detersive purposes can be included in the detergent compositions in accordance with the present invention. Exemplary, non-limiting classes of useful nonionic surfactants are listed below.

Nonionic Dolvhvdroxv fattv acid amide surfactant Polyhydroxy fatty acid amides suitable for use herein are those having the structural formula R2CONR1Z wherein : R1 is H, C1-C4 hydrocarbyl, 2hydroxy ethyl, 2-hydroxy propyl, or a mixture thereof, preferable C1-C4 alkyl, more preferably C1 or C2 alkyl, most preferably C1 alkyl (i.e., methyl); and R2 is a Cg-C31 hydrocarbyl, preferably straight-chain Cs-C 19 alkyl or alkenyl, more preferably straight-chain Cg-C17 alkyl or alkenyl, most preferably straight-chain C1 1-C17 alkyl or alkenyl, or mixture thereof, and Z is a polyhydroxyhydrocarbyl having a linear hydrocarbyl chain with at least 3 hydroxyls directly connected to the chain, or an alkoxylated derivative (preferably ethoxylated or propoxylated) thereof. Z preferably will be derived from a reducing sugar in a reductive amination reaction; more preferably Z is a glycityl.

Nonionic condensates of alkvl phenols The polyethylene, polypropylene, and polybutylene oxide condensates of alkyl phenols are suitable for use herein. In general, the polyethylene oxide condensates are preferred. These compounds include the condensation products of alkyl phenols having an alkyl group containing from about 6 to about 18 carbon atoms in either a straight chain or branched chain configuration with the alkylene oxide.

Nonionic ethoxvlated alcohol surfactant The alkyl ethoxylate condensation products of aliphatic alcohols with from about 1 to about 25 moles of ethylene oxide are suitable for use herein. The alkyl chain of the aliphatic alcohol can either be straight or branched, primary or secondary, and generally contains from 6 to 22 carbon atoms.

Particularly preferred are the condensation products of alcohols having an alkyl group containing from 8 to 20 carbon atoms with from about 2 to about 10 moles of ethylene oxide per mole of alcohol.

Nonionic ethoxvlated/pronoxylated fatty alcohol surfactant The ethoxylated C6-C18 fatty alcohols and C6-C 18 mixed ethoxylated/propoxylated fatty alcohols are suitable surfactants for use herein, particularly where water soluble. Preferably the ethoxylated fatty alcohols are the C l0-Cl 8 ethoxylated fatty alcohols with a degree of ethoxylation of from 3 to 50, most preferably these are the C12-Cl 8 ethoxylated fatty alcohols with a degree of ethoxylation from 3 to 40.

Preferably the mixed ethoxylated/propoxylated fatty alcohols have an alkyl chain length of from 10 to 18 carbon atoms, a degree of ethoxylation of from 3 to 30 and a degree of propoxylation of from 1 to 10.

Nonionic EO/PO condensates with propylene glvcol The condensation products of ethylene oxide with a hydrophobic base formed by the condensation of propylene oxide with propylene glycol are suitable for use herein. The hydrophobic portion of these compounds preferably has a molecular weight of from about 1500 to about 1800 and exhibits water insolubility. Examples of compounds of this type include certain of the commercially-available PluronicrM surfactants, marketed by BASF.

Nonionic EO condensation products with propylene oxide/ethylene diamine adducts The condensation products of ethylene oxide with the product resulting from the reaction of propylene oxide and ethylenediamine are suitable for use herein. The hydrophobic moiety of these products consists of the reaction product of ethylenediamine and excess propylene oxide, and generally has a molecular weight of from about 2500 to about 3000. Examples of this type of nonionic surfactant include certain of the commercially available Tetronicw compounds, marketed by BASF.

Nonionic alkvlpolvsaccharide surfactant Suitable alkylpolysaccharides for use herein are disclosed in U.S. Patent 4,565,647, Llenado, issued January 21, 1986, having a hydrophobic group containing from about 6 to about 30 carbon atoms, preferably from about 10 to about 16 carbon atoms and a polysaccharide, e.g., a polyglycoside, hydrophilic group containing from about 1.3 to about 10, preferably from about 1.3 to about 3, most preferably from about 1.3 to about 2.7 saccharide units. Any reducing saccharide containing 5 or 6 carbon atoms can be used, e.g., glucose, galactose and galactosyl moieties can be substituted for the glucosyl moieties. (Optionally the hydrophobic group is attached at the 2-, 3-, 4-, etc. positions thus giving a glucose or galactose as opposed to a glucoside or galactoside.) The intersaccharide bonds can be, e.g., between the one position of the additional saccharide units and the 2-, 3-, 4-, and/or 6- positions on the preceding saccharide units.

The preferred alkylpolyglycosides have the formula R20(C,H2nO)t(glycosy1X, wherein R2 is selected from the group consisting of alkyl, alkylphenyl, hydroxyalkyl, hydroxyalkylphenyl, and mixtures thereof in which the alkyl groups contain from 10 to 18, preferably from 12 to 14, carbon atoms; n is 2 or 3; t is from 0 to 10, preferably 0, and X is from 1.3 to 8, preferably from 1.3 to 3, most preferably from 1.3 to 2.7. The glycosyl is preferably derived from glucose.

Nonionic fattv acid amide surfactant Fatty acid amide surfactants suitable for use herein are those having the formula: R6CON(R7)2 wherein R6 is an alkyl group containing from 7 to 21, preferably from 9 to 17 carbon atoms and each R7 is selected from the group consisting of hydrogen, C 1 -C4 alkyl, C 1 -C4 hydroxyalkyl, and (C2H40)xH, where x is in the range of from 1 to 3.

Amphoteric surfactant Suitable amphoteric surfactants for use herein include the amine oxide surfactants and the alkyl amphocarboxylic acids.

A suitable example of an alkyl aphodicarboxylic acid for use herein is Miranol(TM) C2M Conc. manufactured by Miranol, Inc., Dayton, NJ.

Amine Oxide surfactant Amine oxides useful herein include those compounds having the formula R3(OR4)XN0(R5)2 wherein R3 is selected from an alkyl, hydroxyalkyl, acylamidopropoyl and alkyl phenyl group, or mixtures thereof, containing from 8 to 26 carbon atoms, preferably 8 to 18 carbon atoms; R4 is an alkylene or hydroxyalkylene group containing from 2 to 3 carbon atoms, preferably 2 carbon atoms, or mixtures thereof, x is from 0 to 5, preferably from 0 to 3; and each R5 is an alkyl or hydyroxyalkyl group containing from 1 to 3, preferably from 1 to 2 carbon atoms, or a polyethylene oxide group containing from 1 to 3, preferable 1, ethylene oxide groups. The R5 groups can be attached to each other, e.g., through an oxygen or nitrogen atom, to form a ring structure.

These amine oxide surfactants in particular include C1 0-C 18 alkyl dimethyl amine oxides and C8-C18 alkoxy ethyl dihydroxyethyl amine oxides.

Examples of such materials include dimethyloctylamine oxide, diethyldecylamine oxide, bis-(2-hydroxyethyl)dodecylamine oxide, dimethyldodecylamine oxide, dipropyltetradecylamine oxide, methylethylhexadecylamine oxide, dodecylamidopropyl dimethylamine oxide, cetyl dimethylamine oxide, stearyl dimethylamine oxide, tallow dimethylamine oxide and dimethyl-2-hydroxyoctadecylamine oxide.

Preferred are Clo-C18 alkyl dimethylamine oxide, and C 10-18 acylamido alkyl dimethylamine oxide.

Zwitterionic surfactant Zwitterionic surfactants can also be incorporated into the detergent compositions in accordance with the invention. These surfactants can be broadly described as derivatives of secondary and tertiary amines, derivatives of heterocyclic secondary and tertiary alpines, or derivatives of quaternary ammonium, quaternary phosphonium or tertiary sulfonium compounds. Betaine and sultaine surfactants are exemplary zwitterionic surfactants for use herein.

Betaine surfactant The betaines useful herein are those compounds having the formula R(R')2N+R2COO- wherein R is a C6-C18 hydrocarbyl group, preferably a Clo-C16 alkyl group or C10-l6 acylamido alkyl group, each R1 is typically C1-C3 alkyl, preferably methyl,m and R2 is a C1-C5 hydrocarbyl group, preferably a C 1 -C3 alkylene group, more preferably a C 1 -C2 alkylene group. Examples of suitable betaines include coconut acylamidopropyldimethyl betaine; hexadecyl dimethyl betaine; C12-14 acylamidopropylbetaine; C8.14 acylamidohexyldiethyl betaine; 4[C14-16 acylmethylamidodiethylammonio]-l -carboxybutane; C 16- 18 acylamidodimethylbetaine; C 12-16 acylamidopentanediethyl-betaine; [C 1216 acylmethylamidodimethylbetaine. Preferred betaines are C 12-18 dimethyl-ammonio hexanoate and the C l 0-l 8 acylamidopropane (or ethane) dimethyl (or diethyl) betaines. Complex betaine surfactants are also suitable for use herein.

Sultaine surfactant The sultaines useful herein are those compounds having the formula (R(R1)2N+R2SO3- wherein R is a C6-C18 hydrocarbyl group, preferably a Clo-C16 alkyl group, more preferably a C12-C13 alkyl group, each R1 is typically Cl -C3 alkyl, preferably methyl, and R2 is a Cl -C6 hydrocarbyl group, preferably a C1 -C3 alkylene or, preferably, hydroxyalkylene group.

Ampholvtic surfactant Ampholytic surfactants can be incorporated into the detergent compositions in accordance with the present invention. These surfactants can be broadly described as aliphatic derivatives of secondary or tertiary amines, or aliphatic derivatives of heterocyclic secondary and tertiary amines in which the aliphatic radical can be straight chain or branched.

Cationic surfactants Cationic surfactants can also be used in the detergent compositions herein.

Suitable cationic surfactants include the quaternary ammonium surfactants selected from mono C6-C16, preferably C6-C10 N-alkyl or alkenyl ammonium surfactants wherein the remaining N positions are substituted by methyl, hydroxyethyl or hydroxypropyl groups.

Water-soluble builder compound The detergent compositions of the present invention preferably contain a water-soluble builder compound, typically present at a level of from 1% to 80% by weight, preferably from 10% to 70% by weight, most preferably from 20% to 60% by weight of the composition.

Suitable water-soluble builder compounds include the water soluble monomeric polycarboxylates, or their acid forms, homo or copolymeric polycarboxylic acids or their salts in which the polycarboxylic acid comprises at least two carboxylic radicals separated from each other by not more that two carbon atoms, carbonates, bicarbonates, borates, phosphates, silicates and mixtures of any of the foregoing.

The carboxylate or polycarboxylate builder can be momomeric or oligomeric in type although monomeric polycarboxylates are generally preferred for reasons of cost and performance.

Suitable carboxylates containing one carboxy group include the water soluble salts of lactic acid, glycolic acid and ether derivatives thereof.

Polycarboxylates containing two carboxy groups include the water-soluble salts of succinic acid, malonic acid, (ethylenedioxy) diacetic acid, maleic acid, diglycolic acid, tartaric acid, tartronic acid and fumaric acid, as well as the ether carboxylates and the sulfinyl carboxylates. Polycarboxylates containing three carboxy groups include, in particular, water-soluble citrates, aconitrates and citraconates as well as succinate derivatives such as the carboxymethyloxysuccinates described in British Patent No. 1,379,241, lactoxysuccinates described in British Patent No. 1,389,732, and aminosuccinates described in Netherlands Application 7205873, and the oxypolycarboxylate materials such as 2-oxa- 1,1,3-propane tricarboxylates described in British Patent No. 1,387,447.

Polycarboxylates containing four carboxy groups include oxydisuccinates disclosed in British Patent No. 1,261,829, 1,1,2,2-ethane tetracarboxylates, 1,1,3,3-propane tetracarboxylates and 1,1,2,3-propane tetracarboxylates.

Polycarboxylates containing sulfo substituents include the sulfosuccinate derivatives disclosed in British Patent Nos. 1,398,421 and 1,398,422 and in U.S. Patent No. 3,936,448, and the sulfonated pyrolysed citrates described in British Patent No. 1,439,000.

Alicyclic and heterocyclic polycarboxylates include cyclopentane-cis,cis,cistetracarboxylates, cyclopentadienide pentacarboxylates, 2,3,4,5 tetrahydroftiran - cis, cis, cis-tetracarboxylates, 2,5-tetrahydrofuran - cis dicarboxylates, 2,2,5,5-tetrahydrofuran - tetracarboxylates, 1,2,3,4,5,6hexane - hexacarboxylates and carboxymethyl derivatives of polyhydric alcohols such as sorbitol, mannitol and xylitol. Aromatic polycarboxylates include mellitic acid, pyromellitic acid and the phthalic acid derivatives disclosed in British Patent No. 1,425,343.

Of the above, the preferred polycarboxylates are hydroxycarboxylates containing up to three carboxy groups per molecule, more particularly citrates.

The parent acids of the monomeric or oligomeric polycarboxylate chelating agents or mixtures thereof with their salts, e.g. citric acid or citrate/citric acid mixtures are also contemplated as usefill builder components.

Borate builders, as well as builders containing borate-forming materials that can produce borate under detergent storage or wash conditions can also be used but are not preferred at wash conditions less that about 50"C, especially less than about 40"C.

Examples of carbonate builders are the alkaline earth and alkali metal carbonates, including sodium carbonate and sesqui-carbonate and mixtures thereof with ultra-fine calcium carbonate as disclosed in German Patent Application No. 2,321,001 published on November 15, 1973.

Specific examples of water-soluble phosphate builders are the alkali metal tripolyphosphates, sodium, potassium and ammonium pyrophosphate, sodium and potassium and ammonium pyrophosphate, sodium and potassium orthophosphate, sodium polymeta/phosphate in which the degree of polymerization ranges from about 6 to 21, and salts of phytic acid.

Suitable silicates include the water soluble sodium silicates with an Si02: Na20 ratio of from 1.0 to 2.8, with ratios of from 1.6 to 2.4 being preferred, and 2.0 ratio being most preferred. The silicates may be in the form of either the anhydrous salt or a hydrated salt. Sodium silicate with an SiO2: Na20 ratio of 2.0 is the most preferred silicate.

Silicates are preferably present in the detergent compositions in accord with the invention at a level of from 5% to 50% by weight of the composition, more preferably from 10% to 40% by weight.

Partiallv soluble or insoluble builder compound The detergent compositions in accordance with the present invention may contain a partially soluble or insoluble builder compound, typically present at a level of from 1% to 80% by weight, preferably from 10% to 70% by weight, most preferably from 20% to 60% weight of the composition.

Examples of largely water insoluble builders include the sodium aluminosilicates. Suitable aluminosilicate zeolites have the unit cell formula Naz[(A102)z(SiO2)y]. XH2O wherein z and y are at least 6; the molar ratio of z toy is from 1.0 to 0.5 and x is at least 5, preferably from 7.5 to 276, more preferably from 10 to 264. The aluminosilicate material are in hydrated form and are preferably crystalline, containing from 10% to 28%, more preferably from 18% to 22% water in bound form.

The aluminosilicate zeolites can be naturally occurring materials, but are preferably synthetically derived. Synthetic crystalline aluminosilicate ion exchange materials are available under the designations Zeolite A, Zeolite B, Zeolite P, Zeolite X, Zeoilte MAP, Zeolite HS and mixtures thereof. Zeolite A has the formula Na 12 [A102) 12 (SiO2)12J. xH2O wherein x is from 20 to 30, especially 27. Zeolite X has the formula Na86 [(AlO2)86(SiO2)106]. 276 H2O.

Crvstalline layered silicate The detergent compositions in accordance with the invention preferably contains a crystalline layered silicate, preferably present at a level of from 0.05% to 40%, more preferably from 0.5% to 30%, most preferably from 2% to 20% by weight of the composition.

The weight ratio of crystalline layered silicate to any peroxyacid bleach precursor compound is preferably from 10:1 to 1:5, more preferably from 5:1 to 1 :2, most preferably from 3:1 to 1:1.

Preferred are the crystalline layered sodium silicates having the general formula NaMSix02x+1 YH20 wherein M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20. Crystalline layered sodium silicates of this type are disclosed in EP-A-0164514 and methods for their preparation are disclosed in DE-A-3417649 and DE-A-3742043. For the purpose of the present invention, x in the general formula above has a value of 2, 3 or 4 and is preferably 2. The most preferred material is 6-Na2Si205, available from Hoechst AG as NaSKS-6.

The crystalline layered sodium silicate material is preferably present in granular detergent compositions as a particulate in intimate admixture with a solid, water-soluble ionisable material as described in PCT Patent Application No. WO 92/18594. The solid, water-soluble ionisable material is selected from organic acids, organic and inorganic acid salts and mixtures thereof, with citric acid being preferred.

Heaw metal ion sequestrant The detergent compositions in accordance with the invention may contain as an optional component other heavy metal ion sequestrants.

Heavy metal ion sequestrants are generally present at a level of from 0.005% to 20%, preferably from 0.1% to 10%, more preferably from 0.25% to 7.5% and most preferably from 0.5% to 5% by weight of the compositions.

Suitable additional heavy metal ion sequestrant for use herein include nitrilotriacetic acid and the polyaminocarboxylic acids ethylenediaminotetracetic acid, ethylenetriamine pentacetic acid, ethylenediamine disuccinic acid, ethylenediamine diglutaric acid, 2hydroxypropylenediamine disuccinic acid or any salts thereof.

Especially preferred is ethylenediamine-N,N'-disuccinic acid (EDDS) or the alkali metal, alkaline earth metal, ammonium, or substituted ammonium salts thereof, or mixtures thereof. Preferred EDDS compounds are the free acid form and the sodium or magnesium salt or complex thereof. Examples of such preferred sodium salts of EDDS include Na2EDDS and Na3EDDS.

Examples of such preferred magnesium complexes of EDDS include MgEDDS and Mg2EDDS.

Optional enzvmes The detergent compositions in accordance with the present invention may also comprise one or more optional enzymes.

Preferred optional enzymatic materials include the commercially available lipases, neutral and alkaline proteases, cellulases, amylases, esterases, pectinases, lactases and peroxidases conventionally incorporated into detergent compositions. Suitable enzymes are discussed in US Patents 3,519,570 and 3,533,139.

Preferred commercially available protease enzymes include those sold under the tradenames Alcalase, Savinase, Primase, Durazu, and Esperase by Novo Industries A/S (Denmark), those sold under the tradename Maxatase, Maxacal and Maxapem by Gist-Brocades, those sold by Genencor International, and those sold under the tradename Opticlean and Optimase by Solvay Enzymes. Protease enzyme may be incorporated into the compositions in accordance with the invention at a level of from 0.0001% to 4% active enzyme by weight of the composition.

Lipolytic enzyme (lipase) may be present at levels of active lipolytic enzyme of from 0.0001% to 2% by weight, preferably 0.001% to 1% by weight, most preferably from 0.001% to 0.5% by weight ofthe compositions.

The lipase may be fungal or bacterial in origin being obtained, for example, from a lipase producing strain of Humicola sp., Thermomvces sp. or Pseudomonas sp. including Pseudomonas pseudoalcaligenes or Pseudomas fluorescens. Lipase from chemically or genetically modified mutants of these strains are also useful herein.

A preferred lipase is derived from Pseudomonas pseudoalcaligenes, which is described in Granted European Patent, EP-B-0218272.

Another preferred lipase herein is obtained by cloning the gene from Humicola lanuginosa and express auxiliary metal cation having little or no bleach catalytic activity, such as zinc or aluminum cations, and a sequestrant having defined stability constants for the catalytic and auxiliary metal cations, particularly ethylenediaminetetraacetic acid, ethylenediaminetetra(methylenephosphonic acid) and water-soluble salts thereof. Such catalysts are disclosed in U.S.

Pat. 4,430,243.

Bleach catalvsts Bleach catalyst, preferably metal containing bleach catalysts can be included in the detergent compositions in accordance with the present invention.

Preferred types of bleach catalysts include the manganese-based complexes disclosed in U.S. Pat. 5,246,621 and U.S. Pat. 5,244,594. Preferred examples ofthese catalysts include MnIV2(u-0)3(1,4,7-trimethyl-1,4,7trazacyclononane)2-(PF6)2, MnIII2(u-O)1(u-OAc)2(1,4,7-trimethyl-1,4,7 triazacyclononane)2-(C104)2, MnIVq(u-0)6(1 ,4,7-triazacyclononane)4- (ClO4)2, MnIIIMnIV4(u-O)1(u-OAc)2-(1,4,7-trimethyl-1,4,7triazacyclononane)2-(C104)3, and mixtures thereof. Others are described in European patent application publication no. 549,272. Other ligands suitable for use herein include 1 ,5,9-trimethyl- 1 ,5,9-triazacyclododecane, 2-methyl 1 ,4,7-triazacyclononane, 2-methyl- 1 ,4,7-triazacyclononane, 1,2,4,7tetramethyl-1,4,7-triazacyclononane, and mixtures thereof.

The bleach catalysts useful in the detergent compositions herein may also be selected as appropriate for the present invention. For examples of suitable bleach catalysts see U.S. Pat. 4,246,612 and U.S. Pat. 5,227,084. See also U.S. Pat. 5,194,416 which teaches mononuclear manganese (IV) complexes such as Mn(1 ,4,7-trimethyl-1 ,4,7-triazacyclononane)(OCH3)3,(PF6).

Still another type of bleach catalyst, as disclosed in U.S. Pat. 5,114,606, is a water-soluble complex of manganese (III), and/or (IV) with a ligand which is a non-carboxylate polyhydroxy compound having at least three consecutive C-OH groups. Preferred ligands include sorbitol, iditol, dulsitol, mannitol, xylithol, arabitol, adonitol, meso-erythritol, meso-inositol, lactose, and mixtures thereof.

U.S. Pat. 5,114,611 teaches a bleach catalyst comprising a complex of transition metals, including Mn, Co, Fe, or Cu, with an non-(macro)-cyclic ligand. Said ligands are of the formula:

wherein R1, R2, R3, and R4 can each be selected from H, substituted alkyl and aryl groups such that each R1-N=C-R2 and R3-C=N-R4 form a five or six-membered ring. Said ring can further be substituted. B is a bridging group selected from O, S. CR5R6, NR7 and C=O, wherein R5, R6, and R7 can each be H, alkyl, or aryl groups, including substituted or unsubstituted groups. Preferred ligands include pyridine, pyridazine, pyrimidine, pyrazine, imidazole, pyrazole, and triazole rings. Optionally, said rings may be substituted with substituents such as alkyl, aryl, alkoxy, halide, and nitro.

Particularly preferred is the ligand 2,2'-bispyridylamine. Preferred bleach catalysts include Co, Cu, Mn, Fe,-bispyridylmethane and -bispyridylamine complexes. Highly preferred catalysts include Co(2,2'-bispyridylamine)C12, Di(isothiocyanato)bispyridylamine-cobalt (II), trisdipyridylamine-cobalt(ll) perchlorate, Co(2,2-bispyridylamine)202ClO4, Bis-(2,2 '-bispyridylamine) copper(II) perchlorate, tris(di-2-pyridylamine) iron(ll) perchlorate, and mixtures thereof.

Preferred examples include binuclear Mn complexes with tetra-N-dentate and bi-N-dentate ligands, including N4Mn111(u.O)2Mn1VN4)+and [Bipy2MnIII(u-O)2MnIVbipy2l-(ClO4)3.

Other bleach catalysts are described, for example, in European patent application, publication no. 408,131 (cobalt complex catalysts), European patent applications, publication nos. 384,503, and 306,089 (metalloporphyrin catalysts), U.S. 4,728,455 (manganese/multidentate ligand catalyst), U.S. 4,711,748 and European patent application, publication no.

224,952, (absorbed manganese on aluminosilicate catalyst), U.S. 4,601,845 (aluminosilicate support with manganese and zinc or magnesium salt), U.S.

4,626,373 (manganese/ligand catalyst), U.S. 4,119,557 (ferric complex catalyst), German Pat. specification 2,054,019 (cobalt chelant catalyst) Canadian 866,191 (transition metal-containing salts) and U.S. 4,430,243 (chelants with manganese cations and non-catalytic metal cations).

Highly preferred catalyst are describedU.S. 4,728,455 (manganese gluconate catalysts).

Further suitable bleach catalysts are polyoxymetalates, whereof the synthesis is described in C.L.Hill, JACS. 1993, 115, 11823. A preferred polyoxymetalate has the following structure: [RC(CH2O)3V3P2W15O59]6 , wherein R= CH3, N02 or CH20H.

The counter ion Q can be n-Bu4N+ or H+ or mixtures thereof. Other related bleach catalysts are for example [Q4]2WO4, OV(O-iPr)3 and Q6[P2W18 62) These complexes have been found to be very hydrolytical stable and very effective at low levels (i.e. less than 1% by weight ofthe detergent compositions). They are preferred bleach catalysts in bleach systems containing a peroxy compound.

The bleach catalyst is typically used in a catalytically effective amount in the compositions and processes herein. By "catalytically effective amount" is meant an amount which is sufficient, under whatever comparative test conditions are employed, to enhance bleaching and removal of the stain or stains of interest from the target substrate. The test conditions will vary, depending on the type of washing appliance used and the habits of the user.

Some users elect to use very hot water; others use warm or even cold water in laundering operations. Of course, the catalytic performance of the bleach catalyst will be affected by such considerations, and the levels of bleach catalyst used in flilly-formulated detergent and bleach compositions can be appropriately adjusted. As a practical matter, and not by way of limitation, the compositions and processes herein can be adjusted to provide on the order of at least one part per ten million of the active bleach catalyst species in the aqueous washing liquor, and will preferably provide from about 1 ppm to about 200 ppm of the catalyst species in the wash liquor. To illustrate this point further, on the order of 3 micromolar manganese catalyst is effective at 400C, pH 10 under European conditions using perborate and a peroxyacid bleach precursor. An increase in concentration of 3-5 fold may be required under U.S. conditions to achieve the same results.

Organic polymeric compound Organic polymeric compounds are preferred additional components of the detergent compositions in accord with the invention. By organic polymeric compound it is meant herein essentially any polymeric organic compound commonly used as dispersants, and anti-redeposition and soil suspension agents in detergent compositions, but excluding any of the high molecular weight organic polymeric compounds described as flocculating agents herein.

Organic polymeric compound is typically incorporated in the detergent compositions in accordance with the invention at a level of from 0.1% to 30%, preferably from 0.5% to 15%, most preferably from 1% to 10% by weight of the compositions.

Examples of organic polymeric compounds include the water soluble organic homo- or co-polymeric polycarboxylic acids or their salts in which the polycarboxylic acid comprises at least two carboxyl radicals separated from each other by not more than two carbon atoms. Polymers of the latter type are disclosed in GB-A-1,596,756. Examples of such salts are polyacrylates of MWt 2000-5000 and their copolymers with maleic anhydride, such copolymers having a molecular weight of from 20,000 to 100,000, especially 40,000 to 80,000.

Other suitable organic polymeric compounds include the copolymers of acrylamide and acrylate having a molecular weight of from 3,000 to 100,000, and the acrylate/flimarate copolymers having a molecular weight of from 2,000 to 80,000. These compounds are disclosed in EP-A-305282, EP A-305283 and EP-A-351629.

Terpolymers containing monomer units selected from maleic acid, acrylic acid, polyaspartic acid and vinyl alcohol, particularly those having an average molecular weight of from 5,000 to 10,000, are also suitable herein.

Other organic polymeric compounds suitable for incorporation in the detergent compositions herein include cellulose derivatives such as methylcellulose, carboxymethylcellulose and hydroxyethylcellulose.

Further useful organic polymeric compounds are the polyethylene glycols, particularly those of molecular weight 1000-10000, more particularly 2000 to 8000 and most preferably about 4000.

Suds suppressing svstem The detergent compositions in accordance with the invention, when formulated for use in machine washing compositions, preferably comprise a suds suppressing system present at a level of from 0.01% to 15%, preferably from 0.05% to 10%, most preferably from 0.1% to 5% by weight of the composition.

Suitable suds suppressing systems for use herein may comprise essentially any known anti foam compound, including, for example silicone antifoam compounds, 2-alkyl and alcanol antifoam compounds.

By antifoam compound it is meant herein any compound or mixtures of compounds which act such as to depress the foaming or sudsing produced by a solution of a detergent composition, particularly in the presence of agitation of that solution.

Particularly preferred antifoam compounds for use herein are silicone antifoam compounds defined herein as any antifoam compound including a silicone component. Such silicone antifoam compounds also typically contain a silica component. The term "silicone" as used herein, and in general throughout the industry, encompasses a variety of relatively high molecular weight polymers containing siloxane units and hydrocarbyl group of various types. Preferred silicone antifoam compounds are the siloxanes, particularly the polydimethylsiloxanes having trimethylsilyl end blocking units.

Other suitable antifoam compounds include the monocarboxylic fatty acids and soluble salts thereof. These materials are described in US Patent 2,954,347, issued September 27, 1960 to Wayne St. John. The monocarboxylic fatty acids, and salts thereof, for use as suds suppressor typically have hydrocarbyl chains of 10 to about 24 carbon atoms, preferably 12 to 18 carbon atoms. Suitable salts include the alkali metal salts such as sodium, potassium, and lithium salts, and ammonium and alkanolammonium salts.

Other suitable antifoam compounds include, for example, high molecular weight fatty esters (e.g. fatty acid triglycerides), fatty acid esters of monovalent alcohols, aliphatic C18-C40 ketones (e.g. stearone) N-alkylated amino triazines such as tri- to hexa-alkylmelamines or di- to tetra alkyldiamine chlortriazines formed as products of cyanuric chloride with two or three moles of a primary or secondary amine containing 1 to 24 carbon atoms, propylene oxide, bis stearic acid amide and monostearyl di-alkali metal (e.g. sodium, potassium, lithium) phosphates and phosphate esters.

Copolymers of ethylene oxide and propylene oxide, particularly the mixed ethoxylated/propoxylated fatty alcohols with an alkyl chain length of from 10 to 16 carbon atoms, a degree of ethoxylation of from 3 to 30 and a degree of propoxylation of from I to 10, are also suitable antifoam compounds for use herein.

Suitable 2-alky-alcanols antifoam compounds for use herein have been described in DE 40 21 265. The 2-alkyl-alcanols suitable for use herein consist of a C6 to C16 alkyl chain carrying a terminal hydroxy group, and said alkyl chain is substituted in the a position by a C1 to C 10 alkyl chain.

Mixtures of 2-alkyl-alcanols can be used in the compositions according to the present invention.

A preferred suds suppressing system comprises (a) antifoam compound, preferably silicone antifoam compound, most preferably a silicone antifoam compound comprising in combination (i) polydimethyl siloxane, at a level of from 50% to 99%, preferably 75% to 95% by weight of the silicone antifoam compound; and (ii) silica, at a level of from 1% to 50%, preferably 5% to 25% by weight of the silicone/silica antifoam compound; wherein said silica/silicone antifoam compound is incorporated at a level of from 5% to 50%, preferably 10% to 40% by weight; (b) a dispersant compound, most preferably comprising a silicone glycol rake copolymer with a polyoxyalkylene content of 72-78% and an ethylene oxide to propylene oxide ratio of from 1:0.9 to 1:1.1, at a level of from 0.5% to 10%, preferably 1% to 10% by weight; a particularly preferred silicone glycol rake copolymer of this type is DCO544, commercially available from DOW Corning under the tradename DCO544; (c) an inert carrier fluid compound, most preferably comprising a C 16- C18 ethoxylated alcohol with a degree of ethoxylation of from 5 to 50, preferably 8 to 15, at a level of from 5% to 80%, preferably 10% to 70%, by weight; A preferred particulate suds suppressor system useful herein comprises a mixture of an alkylated siloxane of the type hereinabove disclosed and solid silica.

The solid silica can be a fumed silica, a precipitated silica or a silica, made by the gel formation technique. The silica particles suitable have an average particle size of from 0.1 to 50 micrometers, preferably from 1 to 20 micrometers and a surface area of at least 50m2/g. These silica particles can be rendered hydrophobic by treating them with dialkylsilyl groups and/or trialkylsilyl groups either bonded directly onto the silica or by means of a silicone resin. It is preferred to employ a silica the particles of which have been rendered hydrophobic with dimethyl and/or trimethyl silyl groups. A preferred particulate antifoam compound for inclusion in the detergent compositions in accordance with the invention suitably contain an amount of silica such that the weight ratio of silica to silicone lies in the range from 1:100 to 3:10, preferably from 1:50 to 1:7.

Another suitable particulate suds suppressing system is represented by a hydrophobic silanated (most preferably trimethyl-silanated) silica having a particle size in the range from 10 nanometers to 20 nanometers and a specific surface area above 50m2/g, intimately admixed with dimethyl silicone fluid having a molecular weight in the range from about 500 to about 200,000 at a weight ratio of silicone to silanated silica of from about 1:1 to about 1:2.

A highly preferred particulate suds suppressing system is described in EP-A0210731 and comprises a silicone antifoam compound and an organic carrier material having a melting point in the range 50"C to 85"C, wherein the organic carrier material comprises a monoester of glycerol and a fatty acid having a carbon chain containing from 12 to 20 carbon atoms. EP-A0210721 discloses other preferred particulate suds suppressing systems wherein the organic carrier material is a fatty acid or alcohol having a carbon chain containing from 12 to 20 carbon atoms, or a mixture thereof, with a melting point of from 450C to 800C.

Other highly preferred particulate suds suppressing systems are described in copending European Application 91870007.1 in the name of the Procter and Gamble Company which systems comprise silicone antifoam compound, a carrier material, an organic coating material and glycerol at a weight ratio of glycerol : silicone antifoam compound of 1:2 to 3:1. Copending European Application 91201342.0 also discloses highly preferred particulate suds suppressing systems comprising silicone antifoam compound, a carrier material, an organic coating material and crystalline or amorphous aluminosilicate at a weight ratio of aluminosilicate : silicone antifoam compound of 1:3 to 3:1. The preferred camier material in both of the above described highly preferred granular suds controlling agents is starch.

An exemplary particulate suds suppressing system for use herein is a particulate agglomerate component, made by an agglomeration process, comprising in combination (i) from 5% to 30%, preferably from 8% to 15% by weight of the component of silicone antifoam compound, preferably comprising in combination polydimethyl siloxane and silica; (ii) from 50% to 90%, preferably from 60% to 80% by weight of the component, of carrier material, preferably starch; (iii) from 5% to 30%, preferably from 10% to 20% by weight of the component of agglomerate binder compound, where herein such compound can be any compound, or mixtures thereof typically employed as binders for agglomerates, most preferably said agglomerate binder compound comprises a C16-C18 ethoxylated alcohol with a degree of ethoxylation of from 50 to 100; and (iv) from 2% to 15%, preferably from 3% to 10%, by weight of C12-C22 hydrogenated fatty acid.

Polvmeric dve transfer inhibiting agents The detergent compositions herein may also comprise from 0.01% to 10 %, preferably from 0.05% to 0.5% by weight of polymeric dye transfer inhibiting agents.

The polymeric dye transfer inhibiting agents are preferably selected from polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and Nvinylimidazole, polyvinylpyrrolidonepolymers or combinations thereof.

a) Polvamine N-oxide polymers Polyamine N-oxide polymers suitable for use herein contain units having the following structure formula:

wherein P is a polymerisable unit, whereto the R-N-O group can be attached to, or wherein the R-N-O group forms part of the polymerisable unit or a combination of both.

-O-, -S-, -N-; xis O or 1; R are aliphatic, ethoxylated aliphatics, aromatic, heterocyclic or alicyclic groups or any combination thereof whereto the nitrogen of the N-O group can be attached or wherein the nitrogen of the N-O group is part of these groups.

The N-O group can be represented by the following general structures:

wherein R1, R2, and R3 are aliphatic groups, aromatic, heterocyclic or alicyclic groups or combinations thereof, x or/and y or/and z is 0 or 1 and wherein the nitrogen of the N-O group can be attached or wherein the nitrogen of the N-O group forms part of these groups. The N-O group can be part of the polymerisable unit (P) or can be attached to the polymeric backbone or a combination of both.

Suitable polyamine N-oxides wherein the N-O group forms part of the polymerisable unit comprise polyamine N-oxides wherein R is selected from aliphatic, aromatic, alicyclic or heterocyclic groups. One class of said polyamine N-oxides comprises the group of polyamine N-oxides wherein the nitrogen of the N-O group forms part of the R-group. Preferred polyamine N-oxides are those wherein R is a heterocyclic group such as pyrridine, pyrrole, imidazole, pyrrolidine, piperidine, quinoline, acridine and derivatives thereof.

Another class of said polyamine N-oxides comprises the group of polyamine N-oxides wherein the nitrogen of the N-O group is attached to the R-group.

Other suitable polyamine N-oxides are the polyamine oxides whereto the N O group is attached to the polymerisable unit.

Preferred class of these polyamine N-oxides are the polyamine N-oxides having the general formula (I) wherein R is an aromatic,heterocyclic or alicyclic groups wherein the nitrogen of the N-0 functional group is part of said R group. Examples of these classes are polyamine oxides wherein R is a heterocyclic compound such as pyrridine, pyrrole, imidazole and derivatives thereof.

Another preferred class of polyamine N-oxides are the polyamine oxides having the general formula (I) wherein R are aromatic, heterocyclic or alicyclic groups wherein the nitrogen of the N-O functional group is attached to said R groups. Examples of these classes are polyamine oxides wherein R groups can be aromatic such as phenyl.

Any polymer backbone can be used as long as the amine oxide polymer formed is water-soluble and has dye transfer inhibiting properties. Examples of suitable polymeric backbones are polyvinyls, polyalkylenes, polyesters, polyethers, polyamide, polyimides, polyacrylates and mixtures thereof.

The amine N-oxide polymers in the detergent compositions in accordance with the present invention typically have a ratio of amine to the amine Noxide of 10:1 to 1:1000000. However the amount of amine oxide groups present in the polyamine oxide polymer can be varied by appropriate copolymerization or by appropriate degree of N-oxidation. Preferably, the ratio of amine to amine N-oxide is from 2:3 to 1:1000000. More preferably from 1:4 to 1:1000000, most preferably from 1:7 to 1:1000000. The polymers of the present invention actually encompass random or block copolymers where one monomer type is an amine N-oxide and the other monomer type is either an amine N-oxide or not. The amine oxide unit of the polyamine N-oxides has a PKa < 10, preferably PKa < 7, more preferred PKa < 6.

The polyamine oxides can be obtained in almost any degree of polymerisation. The degree of polymerisation is not critical provided the material has the desired water-solubility and dye-suspending power.

Typically, the average molecular weight is within the range of 500 to 1000,000; preferably from 1,000 to 50,000, more preferably from 2,000 to 30,000, most preferably from 3,000 to 20,000.

b) Copolvmers of N-vinvlpvrrolidone and N-vinvlimidazole Preferred polymers for use herein may comprise a polymer selected from Nvinylimidazole N-vinylpyrrolidone copolymers wherein said polymer has an average molecular weight range from 5,000 to 50,000 more preferably from 8,000 to 30,000, most preferably from 10,000 to 20,000. The preferred Nvinylimidazole N-vinylpyrrolidone copolymers have a molar ratio of Nvinylimidazole to N-vinylpyrrolidone from 1 to 0.2, more preferably from 0.8 to 0.3, most preferably from 0.6 to 0.4.

c) Polvvinvlnvrrolidone The detergent compositions herein may also utilize polyvinylpyrrolidone ("PVP" having an average molecular weight of from 2,500 to 400,000, preferably from 5,000 to 200,000, more preferably from 5,000 to 50,000, and most preferably from 5,000 to 15,000. Suitable polyvinylpyrrolidones are commercially vailable from ISP Corporation, New York, NY and Montreal, Canada under the product names PVP K-15 (viscosity molecular weight of 10,000), PVP K-30 (average molecular weight of 40,000), PVP K60 (average molecular weight of 160,000), and PVP K-90 (average molecular weight of 360,000). PVP K-15 is also available from ISP Corporation. Other suitable polyvinylpyrrolidones which are commercially available from BASF Cooperation include Sokalan HP 165 and Sokalan HP 12.

Polyvinylpyrrolidone may be incorporated in the detergent compositions in accordance with the invention at a level of from 0.01% to 5% by weight of the detergent, preferably from 0.05% to 3% by weight, and more preferably from 0.1% to 2% by weight. The amount of polyvinylpyrrolidone delivered in the wash solution is preferably from 0.5 ppm to 250 ppm, preferably from 2.5 ppm to 150 ppm, more preferably from 5 ppm to 100 ppm.

A preferred detergent composition in accordance with the invention comprises a polyvinylpyrrolidone in combination with a crystalline sodium silicate, preferably a crystalline Layered sodium silicate, such as NaSKS (trade name). This combination has found to have excellent dye transfer inhibitor properties, which is believed to be caused by a synergetic effect between both compounds.

d) Polvvinvloxazolidone The detergent compositions herein may also utilize polyvinyloxazolidones as polymeric dye transfer inhibiting agents. Said polyvinyloxazolidones have an average molecular weight of from 2,500 to 400,000, preferably from 5,000 to 200,000, more preferably from 5,000 to 50,000, and most preferably from 5,000 to 15,000.

The amount of polyvinyloxazolidone incorporated in the detergent compositions may be from 0.01% to 5% by weight, preferably from 0.05% to 3% by weight, and more preferably from 0.1% to 2% by weight. The amount of polyvinyloxazolidone delivered in the wash solution is typically from 0.5 ppm to 250 ppm, preferably from 2.5 ppm to 150 ppm, more preferably from 5 ppm to 100 ppm.

*e) Polwinvlimidazole The detergent compositions herein may also utilize polyvinylimidazole as polymeric dye transfer inhibiting agent. Said polyvinylimidazoles preferably have an average molecular weight of from 2,500 to 400,000, more preferably from 5,000 to 50,000, and most preferably from 5,000 to 15,000.

The amount of polyvinylimidazole incorpoarted in the detergent compositions may be from 0.01% to 5% by weight, preferably from 0.05% to 3% by weight, and more preferably from 0.1% to 2% by weight. The amount of polyvinylimidazole delivered in the wash solution is from 0.5 ppm to 250 ppm, preferably from 2.5 ppm to 150 ppm, more preferably from 5 ppm to 100 ppm.

Optical brihtener The detergent compositions herein may also optionally contain from about 0.005% to 5% by weight of certain types of hydrophilic optical brighteners which also provide a dye transfer inhibition action. If used, the compositions herein will preferably comprise from about 0.01% to 1% by weight of such optical brighteners.

Hydrophilic optical brighteners useflil herein include those having the structural formula:

wherein R1 is selected from anilino, N-2-bis-hydroxyethyl and NH-2hydroxyethyl; R2 is selected from N-2-bis-hydroxyethyl, N-2-hydroxyethyl N-methylamino, morphilino, chloro and amino; and M is a salt-forming cation such as sodium or potassium.

When in the above formula, R1 is anilino, R2 is N-2-bis-hydroxyethyl and M is a cation such as sodium, the brightener is 4,4',-bis[(4-anilino-6-(N-2 bis-hydroxyethyl)-s-triazine-2-yl)amino] -2,2'-stilbenedisulfonic acid and disodium salt. This particular brightener species is commercially marketed under the tradename Tinopal-UNPA-GX by Ciba-Geigy Corporation.

Tinopal-UNPA-GX is the preferred hydrophilic optical brightener useflil in the detergent compositions herein.

When in the above formula, R1 is anilino, R2 is N-2-hydroxyethyl-N-2methylamino and M is a cation such as sodium, the brightener is 4,4'-bis[(4 anilino-6 -(N-2 -hydroxyethyl.N-methylamino)-s-t:riazine-2 -yl)amino] 2,2'- stilbenedisulfonic acid disodium salt. This particular brightener species is commercially marketed under the tradename Tinopal SBM-GX by Ciba Geigy Corporation.

When in the above formula, R1 is anilino, R2 is morphilino and M is a cation such as sodium, the brightener is 4,4'-bisl(4-anilino-6-morphilino-s- triazine-2-yl)amino]2,2'-stilbenedisulfonic acid, sodium salt. This particular brightener species is commercially marketed under the tradename Tinopal AMS-GX by Ciba Geigy Corporation.

The specific optical brightener species selected for use in the present invention provide especially effective dye transfer inhibition performance benefits when used in combination with the selected polymeric dye transfer inhibiting agents hereinbefore described. The combination of such selected polymeric materials (e.g., PVNO and/or PVPVI) with such selected optical brighteners (e.g., Tinopal UNPA-GX, Tinopal 5BM-GX and/or Ti noted that the term clay mineral, as used herein, excludes sodium aluminosilicate builder compounds.

The weight ratio of clay mineral compound to any peroxyacid bleach precursor compound is preferably from 10:1 to 1:5, more preferably from 5:1 to 1:2,mostpreferablyfrom3:1 to 1:1.

The clay mineral compound is preferably a smectite clay compound.

Smectite clays are disclosed in the US Patents No.s 3,862,058 3,948,790, 3,954,632 and 4,062,647 and European Patents No.s EP-A-299,575 and EP A-313,146 all in the name of the Procter and Gamble Company.

The term smectite clays herein includes both the clays in which aluminium oxide is present in a silicate lattice and the clays in which magnesium oxide is present in a silicate lattice. Typical smectite clay compounds include the compounds having the general formula Al2(Si2O5)2(OH)2.nH20 and the compounds having the general formula Mg3(Si2Os)2(OH)2.nH2O. Smectite clays tend to adopt an expandable three layer structure.

Specific examples of suitable smectite clays include those selected from the classes of the montmorillonites, hectorites, volchonskoites, nontronites, saponites and sauconites, particularly those having an alkali or alkaline earth metal ion within the crystal lattice structure. Sodium or calcium montmorillonite are particularly preferred.

Suitable smectite clays, particularly montmorillonites, are sold by various suppliers including English China Clays, Laviosa, Georgia Kaolin and Colin Stewart Minerals.

Clays for use herein preferably have a largest particle dimension of from 0.01 am to 800cut, more preferably from lmm to 400 mm, more preferably from 5mm to 200 mm.

Particles of the clay mineral compound may be included as components of agglomerate particles containing other detergent compounds. Where present as such components, the term "largest particle dimension" of the clay mineral compound refers to the largest dimension of the clay mineral compound refers to the largest dimension of the clay mineral component as such and not to the agglomerated particle as a whole.

Substitution of small cations, such as protons, sodium ions, potassium ions, magensium ions and calcium ions, and of certain organic molecules inlcuding those having positively charged functional groups can typically take place within the crystal lattice structure of the smectite clays. A clay may be chosen for its ability to preferentially absorb one cation type, such ability being assessed by measurements of relative ion exchange capacity.

The smectite clays suitable herein typically have a cation exchange capacity of at least 50 meq/lOOg. U.S. Patent No. 3,954,632 describes a method for measurement of cation exchange capacity.

The crystal lattice structure of the clay mineral compounds may have, in a preferred execution, a cationic fabric softening agent substituted therein.

Such substituted clays have been termed 'hydrophobically activated' clays.

The cationic fabric softening agents are typically present at a weight ratio, cationic fabric softening agent to clay, of from 1:200 to 1:10, preferably from 1:100 to 1:20. Preferred cationic fabric softening agents include the water insoluble tertiary amines or dilong chain amide materials as disclosed in GB-A-1 514 276 and EP-B-O 011 340.

Cationic fabric softening agents Cationic fabric softening agents can also be incorporated into detergent compositions in accordance with the present invention. These may be present as distinct components or as components ofthe, hereinbefore described, hydrophobically activated clay materials. Suitable cationic fabric softening agents include the water insoluble tertiary amines or dilong chain amide materials as disclosed in GB-A- 1 514 276 and EP-B-O 011 340.

Cationic fabric softening agents are typically incorporated at total levels of from 0.5% to 15% by weight, normally from 1% to 5% by weight.

Other optional ingredients Other optional ingredients suitable for inclusion in the detergent compositions in accordance with the invention include perfumes, colours and filler salts, with sodium sulfate being a preferred filler salt.

Form of the compositions The detergent compositions in accordance with the invention can be formulated in any desirable form such as powders, granulates, pastes, and tablets.

Solid compositions The detergent compositions in accordance with the invention are preferably in the form of solids, such as powders and granules.

The particle size of the components of granular compositions in accordance with the invention should preferably be such that no more that 5% of particles are greater than 1 .4mm in diameter and not more than 5% of particles are less than 0.1 Smm in diameter.

The bulk density of granular detergent compositions in accordance with the present invention typically have a bulk density of at least 450 gllitre, more usually at least 600 g/litre and more preferably from 650 gflitre to 1200 g/litre.

Making processes - granular compositions In general, granular detergent compositions in accordance with the present invention can be made via a variety of methods including dry mixing, spray drying, agglomeration and granulation.

Laundry washing methods The compositions in accordance with the invention may be used in essentially any washing or cleaning method, including machine laundry washing methods.

Machine laundry methods herein typically comprise treating soiled laundry with an aqueous wash solution in a washing machine having dissolved or dispensed therein an effective amount of a machine laundry detergent composition in accord with the invention. The detergent can be added to the wash solution either via the dispenser drawer of the washing machine or by a dispensing device. By an effective amount of the detergent composition it is meant from 40g to 300g of product dissolved or dispersed in a wash solution of volume from 5 to 65 litres, as are typical product dosages and wash solution volumes commonly employed in conventional machine laundry methods.

In a preferred washing method herein a dispensing device containing an effective amount of detergent product is introduced into the drum of a frontloading washing machine before the commencement of the wash cycle.

The dispensing device is a container for the detergent product which is used to deliver the product directly into the drum of the washing machine. Its volume capacity should be such as to be able to contain sufficient detergent product as would normally be used in the washing method.

Once the washing machine has been loaded with laundry the dispensing device containing the detergent product is placed inside the drum. At the commencement of the wash cycle of the washing machine water is introduced into the drum and the drum periodically rotates. The design of the dispensing device should be such that it permits containment of the dry detergent product but then allows release of this product during the wash cycle in response to its agitation as the drum rotates and also as a result of its immersion in the wash water.

To allow for release of the detergent product during the wash the device may possess a number of openings through which the product may pass.

Alternatively, the device may be made of a material which is permeable to liquid but impermeable to the solid product, which will allow release of dissolved product. Preferably, the detergent product will be rapidly released at the start of the wash cycle thereby providing transient localised high concentrations of product in the drum of the washing machine at this stage of the wash cycle.

Preferred dispensing devices are reusable and are designed in such a way that container integrity is maintained in both the dry state and during the wash cycle. Especially preferred dispensing devices for use in accord with the invention have been described in the following patents; GB-B-2, 157, 717, GB-B-2, 157, 718, EP-A-0201376, EP-A-0288345 and EP-A-0288346.

An article by J.Bland published in Manufacturing Chemist, November 1989, pages 41-46 also describes especially preferred dispensing devices for use with granular laundry products which are of a type commonly know as the "granulette".

Especially preferred dispensing devices are disclosed in European Patent Application Publication Nos. 0343069 & 0343070. The latter Application discloses a device comprising a flexible sheath in the form of a bag extending from a support ring defining an orifice, the orifice being adapted to admit to the bag sufficient product for one washing cycle in a washing process. A portion of the washing medium flows through the orifice into the bag, dissolves the product, and the solution then passes outwardly through the orifice into the washing medium. The support ring is provided with a masking arrangemnt to prevent egress of wetted, undissolved, product, this arrangement typically comprising radially extending walls extending from a central boss in a spoked wheel configuration, or a similar structure in which the walls have a helical form.

Preferably the dispensing device is pretreated with a 100/0-30% solution of a soil release polymer. The pre-treatment consist of an immersion of the dispensing device into such a solution containing a soil release polymer, whereafter the dispensing device is dried. This pre-treatment keeps the reusable dispensing device clear from hydrophobic soils, such as human body soils, car oils, vegatable oils and greasy food, when used in a washing process.

The main types of soil release agents, which are useful in the pre-treatment of the dispensing device and which provide benefits to primarily hydrophobic synthetic fabrics include synthetic soil release agents, preferably terephthalate based and polysaccharide ethers. Polymeric soil release agents are described in the art, for example US 4 795 584 and EPO 253 567 disclose soil release polymers comprising ethyleneoxy terephthalate and polyethyleneoxy terephthalate units having a molecular weight of 900 to 9000. The soil release agents useful herein especially include those soil release agents having one or more nonionic hydrophile components consisting essentially of at least one oxyalkylene unit, preferably having a degree of polymerisation of at least 2, more preferably 2 to 10. Preferably the soil release agent further comprises at least one terephthalate or substituted terephthalate unit, preferably the soil release agent either comprises a polyester backbone comprising at least one terephthalate unit and at least one sulphoisophthalate unit and at least one end capping unit.

A preferred polymeric soil release agent is a polyester with repeat units of ethylene terephthalate units contains 10-15% by weight of ethylene terephthalate units together with 90-80% by 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. Patent 4,702,857, issued October 27, 1987 to Gosselink.

Other soil release polymers are polysaccharide ethers such as cellulose ethers, which have been described for example in EPO 054 325 which discloses a detergent composition having reduced soil redeposition effects comprising carboxymethyl cellulose, a linear polycarboxylate and a cellulose ether having a degree of substitution (ds) of at least 0.5 and a degree of polymerisation (dp) of less than 300. GB 1 534 641 discloses cellulose ether soil release agents such as alkyl and hydroxyalkyl cellulose ethers. US 4 441 881 discloses modified cellulose ethers such as alkyl and hydroxyalkyl cellulose ethers having a molecular weight of 19000 to 185000 and a degree of substitution up to 3.

Synthetic soil release agents and polysaccharide ethers have been described for example in US 4 740 326. The soil release polymers are selected from either alkyl or hydroxyalkyl cellulose ethers having a molar degree of substitution (ds) of from 1.5 to 2.7 and average molecular weight of from 2000 to 100000 or various ethylene terephthalate and polyethylene oxide terephthalate polymers having an average molecular weight of from 1000 to 100000 and mixtures thereof.

Another preferred polymeric soil release agent is a sulfonated 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. These soil release agents are described fully in U.S. Patent 4,968,451, issued November 6, 1990 to J.J.

Scheibel and E.P. Gosselink. Other suitable polymeric soil release agents include the terephthalate polyesters of U.S. Patent 4,711,730, issued December 8, 1987 to Gosselink et al, the anionic end-capped oligomeric esters of U.S. Patent 4,721,580, issued January 26, 1988 to Gosselink, and the block polyester oligomeric compounds of U.S. Patent 4,702,857, issued October 27, 1987 to Gosselink. Preferred polymeric soil release agents also include the soil release agents of U.S. Patent 4,877,896, issued October 31, 1989 to Maldonado et al, which discloses anionic, especially sulfoarolyl, end-capped terephthalate esters.

Packaging for the compositions Commercially marketed executions of the bleaching compositions can be packaged in any suitable container including those constructed from paper, cardboard, plastic materials and any suitable laminates. A preferred packaging execution is described in copending European Application No.

93970141.4.

Abbreviations used in Examples In the detergent compositions, the abbreviated component identifications have the following meanings: LAS Sodium linear C12 alkyl benzene sulfonate TAS Sodium tallow alkyl sulfate OS Oleoyl Sarcosinate C45AS Sodium C14-C15 linear alkyl sulfate AGS C14 alkyl glycerol sulfate CxyEzS Sodium Clx.CIy branched alkyl sulfate condensed with z moles of ethylene oxide C45E7 A C14-15 predominantly linear primary alcohol condensed with an average of 7 moles of ethylene oxide C25E3 A C12 15 branched primary alcohol condensed with an average of 3 moles of ethylene oxide C25E5 A C12-15 branched primary alcohol condensed with an average of 5 moles of ethylene oxide CEQ RlCOOCH2CH2.N+(CH3)3 with R1 = C11-C13 QAS R2.N+(CH3)2(C2H40H) with R2 = C12 - C14 Soap Sodium linear alkyl carboxylate derived from an 80/20 mixture of tallow and coconut oils.

TFAA C16-C18 N-methyl glucamide CFAA C12-C14 N-methyl glucamide TPKFA C12-C14 topped whole cut fatty acids STPP Anhydrous sodium tripolyphosphate Zeolite A Hydrated Sodium Aluminosilicate of formula Nal2(A1 2Si 2)12. 27H20 having a primary particle size in the range from 0.1 to 10 micrometers NaSKS-6 Crystalline layered silicate of formula 3 -Na2Si205 Citric acid Anhydrous citric acid Carbonate Anhydrous sodium carbonate with a particle size between 200 m and 900un Bicarbonate Anhydrous sodium bicarbonate with a particle size distribution between 400yun and 1200Kun Silicate Amorphous Sodium Silicate (SiO2:Na2O; 2.0 ratio) Sodium sulfate : Anhydrous sodium sulfate Citrate Tri-sodium citrate dihydrate of activity 86.4% with a particle size distribution between 425cut and 850 yun Tripeptide 1 Tripeptide consisting of aspartic acid, phenylalanine and histidine amino acid units (AspPheHis-NH2) Tripeptide 2 Tripeptide consisting of aspartic acid, phenylalanine and histidine amino acid units (AspPheHis) MA/AA Coplymer of 1:4 maleic/acrylic acid, average molecular weight about 70,000.

CMC Sodium carboxymethyl cellulose Protease Proteolytic enzyme of activity 4KNPU/g sold by NOVO Industries A/S under the tradename Savinase Alcalase Proteolytic enzyme of activity 3AU/g sold by NOVO Industries A/S Cellulase Cellulytic enzyme of activity 1000 CEVU/g sold by NOVO Industries A/S under the tradename Carezyme Amylase Amylolytic enzyme of activity 60KNU/g sold by NOVO Industries A/S under the tradename Termamyl 60T Lipase Lipolytic enzyme of activity 1 100kLU/g sold by NOVO Industries A/S under the tradename Lipolase Endolase Endoglunase enzyme of activity 3000 CEVU/g sold by NOVO Industries A/S PB4 Sodium perborate tetrahydrate of nominal formula NaB02 .3H20.H202 PB 1 Anhydrous sodium perborate bleach of nominal formula NaBo2.H2o2 Percarbonate Sodium Percarbonate of nominal formula 2Na2C03 .3H202 NOBS Nonanoyloxybenzene sulfonate in the form of the sodium salt.

TAED Tetraacetylethylenediamine DTPMP Diethylene triamine penta (methylene phosphonate), marketed by Monsanto under the Trade name Dequest 2060 Photoactivated : Sulfonated Zinc Phthlocyanine encapsulated in bleach dextrin soluble polymer Brightener 1 Disodium 4 ,4'-bis(2-sulphostyryl)biphenyl Brightener 2 Disodium 4 ,4'-bis(4-anilino-6-morpholino- 1.3.5 - triazin-2-yl)amino) stilbene-2 :2'-disulfonate.

HEDP l,l-hydroxyethane diphosphonic acid PVP : Polyvinyl pyrrolidone PVNO Polyvinylpyridine N-oxide PVPVI Copolymer of polyvinylpyrolidone and vinylimidazole SRP 1 Sulfobenzoyl end capped esters with oxyethylene oxy and terephtaloyl backbone SRP 2 Diethoxylated poly (1, 2 propylene terephtalate) short block polymer Silicone antifoam: Polydimethylsiloxane foam controller with siloxane-oxyalkylene copolymer as dispersing agent with a ratio of said foam controller to said dispersing agent of 10:1 to 100:1.

In the following Examples all levels are quoted as % by weight of the composition: Example 1 The following laundry detergent compositions A to F were prepared in accord with the invention:

A B C D E F LAS 8.0 8.0 8.0 8.0 8.0 8.0 C25E3 3.4 3.4 3.4 3.4 3.4 3.4 CEQ 0.8 - - 0.8 QAS S 0.8 - X 0.8 Zeolite A 18.1 18.1 18.1 18.1 18.1 18.1 Carbonate 13.0 13.0 13.0 27.0 27.0 27.0 Silicate 1.4 1.4 1.4 3.0 3.0 3.0 Sodium sulfate 26.1 26.1 26.1 26.1 26.1 26.1 Tripeptide 1 1.0 2.0 3.0 0.5 0.2 0.8 PB4 9.0 9.0 9.0 9.0 9.0 9.0 TAED 1.5 1.5. 1.5 1.5 1.5 1.5 DETPMP 0.25 0.25 0.25 0.25 0.25 0.25 HEDP 0.3 0.3 0.3 0.3 0.3 0.3

Protease 0.26 0.26 0.26 0.26 0.26 0.26 Amylase 0.1 0.1 0.1 0.1 0.1 0.1 MA/AA 0.3 0.3 0.3 0.3 0.3 0.3 CMC 0.2 0.2 0.2 0.2 0.2 0.2 Photoactivated 15 15 15 15 15 15 bleach (ppm) ppm ppm ppm ppm ppm ppm Brightener 1 0.09 0.09 0.09 0.09 0.09 0.09 Perfiime 0.3 0.3 0.3 0.3 0.3 0.3 Silicone antifoam 0.5 0.5 0.5 0.5 0.5 0.5 Misc/minors to 100% Density in g/litre 850 850 850 850 850 850 Example 2 The following granular laundry detergent compositions G to I of bulk density 750 g/litre were prepared in accord with the invention:

G H I LAS 5.25 5.61 4.76 TAS 1.25 1.86 1.57 C45AS - 2.24 3.89 C25AE3S - 0.76 1.18 C45E7 3.25 - 5.0 C25E3 5.5 CEQ 0.8 2.0 2.0 STPP 19.7 Zeolite A 19.5 19.5 NaSKS-6/citric acid - 10.6 10.6 (79:21) Carbonate 6.1 21.4 21.4 Bicarbonate 2.0 2.0 Silicate 6.8 Sodium sulfate 39.8 - 14.3

Tripeptide 1 5.0 6.0 1.0 PB4 5.0 12.7 TAED 0.5 3.1 DETPMP 0.25 0.2 0.2 HEDP 0.3 0.3 Protease 0.26 0.85 0.85 Lipase 0.15 0.15 0.15 Cellulase 0.28 0.28 0.28 Amylase 0.1 0.1 0.1 MA/AA 0.8 1.6 1.6 CMC 0.2 0.4 0.4 PVP 0.9 1.3 0.8 Photoactivated bleach 15 ppm 27 ppm 27 ppm (ppm) Brightener 1 0.08 0.19 0.19 Brightener 2 0.04 0.04 Perfiune 0.3 0.3 0.3 Silicone antifoam 0.5 2.4 2.4 Minors/misc to 100% Example 3 The following detergent formulations, according to the present invention were prepared, where J is a phosphorus-containing detergent composition, K is a zeolite-containing detergent composition and L is a compact detergent composition:

J K L Blown Powder STPP 24.0 - 24.0 Zeolite A - 24.0 C45AS 9.0 6.0 13.0 MA/AA 2.0 4.0 2.0 LAS 6.0 8.0 11.0 TAS 2.0 - Silicate 7.0 3.0 3.0 CMC 1.0 1.0 0.5 Brightener 2 0.2 0.2 0.2 Soap 1.0 1.0 1.0 DTPMP 0.4 0.4 0.2 Spray On C45E7 2.5 2.5 2.0 C25E3 2.5 2.5 2.0 Silicone antifoam 0.3 0.3 0.3 PerfUme 0.3 0.3 0.3 additives Tripeptide 1 1.0 0.5 4.0 Carbonate 6.0 13.0 15.0 PB4 18.0 18.0 10.0 PB1 4.0 4.0 0 TAED 3.0 3.0 1.0 Photoactivated bleach 0.02 0.02 0.02 Protease 1.0 1.0 1.0 Lipase 0.4 0.4 0.4 Amylase 0.25 0.30 0.15 mixed sodium sulfate 3.0 3.0 5.0

Balance (Moisture & 100.0 100.0 100.0 Miscellaneous) Density itre) 630 670 670 Example 4 The following nil bleach-containing detergent formulations of particular use in the washing of colored clothing, according to the present invention were prepared:

M N O Blown Powder Zeolite A 15.0 15.0 Sodium sulfate 0.0 5.0 LAS 3.0 3.0 DTPMP 0.4 0.5 CMC 0.4 0.4 MA/AA 4.0 4.0 Agglomerates C45AS - - 11.0 LAS 6.0 5.0 TAS 3.0 2.0 Silicate 4.0 4.0 Zeolite A 10.0 15.0 13.0 CMC - - 0.5 MA/AA 2.0 Carbonate 9.0 7.0 7.0 Spray On Perfilme 0.3 0.3 0.5 C45E7 4.0 4.0 4.0 C25E3 2.0 2.0 2.0 Dry additives Tripeptide 1.5 0.5 3.5 MA/AA 3.0 NaSKS-6 - - 12.0 Citrate 10.0 - 8.0 Bicarbonate 7.0 3.0 5.0 Carbonate 8.0 5.0 7.0 PVPVI/PVNO 0.5 0.5 0.5 Alcalase 0.5 0.3 0.9 Lipase 0.4 0.4 0.4 Amylase 0.6 0.6 0.6

Cellulase 0.6 0.6 0.6 Silicone antifoam 5.0 5.0 5.0 additives Sodium sulfate 0.0 9.0 0.0 Balance (Moisture and 100.0 100.0 100.0 Miscellaneous) Density (g/litre) 700 700 700 Example 5 The following detergent formulations, according to the present invention were prepared:

P Q R S OS 6.5 7.5 8.5 6.5 AGS 4.0 4.2 4.4 5.0 LAS 20.0 14.0 24.0 22.0 QAS 0.7 1.0 - 0.7 TFAA - 1.0 - C25E5/C45E7 - 2.0 - 0.5 C45E3S 2 2.5 STPP 30.0 18.0 30.0 # 22.0 Silicate 9.0 5.0 10.0 8.0 Tripeptide 2 1.0 2.0 2.5 3.5 Carbonate 13.0 7.5 - 5.0 Bicarbonate - 7.5 - DTPMP 0.7 1.0 - SRP 1 0.3 0.2 - 0.1 MA/AA 2.0 1.5 2.0 1.0 CMC 0.8 0.4 0.4 0.2 Protease 0.8 1.0 0.5 0.5 Amylase 0.8 0.4 - 0.25 Lipase 0.2 0.1 0.2 0.1 Cellulase 0.15 0.05 - Photoactivated 70ppm 45ppm 1 Oppm bleach (ppm) Brightener 1 0.2 0.2 0.08 0.2 PB1 6.0 2.0 - NOBS 2.0 1.0 - - Balance 100 100 100 100 (Moisture and Miscellaneous) Example 6 The following detergent formulations, according to the present invention were prepared:

T U V Blown Powder Zeolite A 30.0 22.0 6.0 Sodium sulfate 19.0 5.0 7.0 MA/AA 3.0 3.0 6.0 C10AE3S 1.4 2.9 1.5 C16AS 1.2 1.2 1.2 C12AS 3.6 2.1 2.2 12AE3 2.25 3.6 2.2 CFAA 7.6 0.6 7.8 C45AS 8.0 7.0 7.0 Silicate - 1.0 5.0 Soap <S Example 7 The following high density and bleach-containing detergent formulations, according to the present invention were prepared:

w x Y Blown Powder Zeolite A 15.0 15.0 15.0 Sodim sulfate 0.0 5.0 0.0 LAS 3.0 3.0 3.0 QAS 1.5 1.5 DTPMP 0.4 0.4 0.4 CMC 0.4 | OA 0.4 MA/AA 4.0 2.0 2.0 Agglomerates LAS 5.0 5.0 5.0 TAS 2.0 2.0 1.0 Silicate 3.0 3.0 4.0 zeolite A 8.0 8.0 8.0 Carbonate 8.0 8.0 | 4.0 Spray On Perfume 0.3 0.3 0.3 C45E7 2.0 2.0 2.0 C25E3 2.0 Dry additives Tripeptide 2 5.5 3.0 1.2 Citrate 5.0 - 2.0 Bicarbonate 3.0 Carbonate 8.0 @ 15.0 10.0 TAED 6.0 2.0 5.0 PB1 @ 14.0 7.0 10.0 Polyethylene oxide of MW - - 0.2 5,000,000 Bentonite clay 10.0 Protease | 1.0 1.0 1.0 Lipase 0.4 0.4 0.4 Amylase 0.6 0.6 0.6

Cellulase 0.6 0.6 0.6 Silicone antifoam 5.0 5.0 5.0 Dry additives Sodium sulfate 0.0 3.0 0.0 Balance (Moisture and 100.0 100.0 100.0 Miscellaneous) Density (g/litre) 850 850 850 Example 8 The following high density detergent formulations, according to the present invention were prepared:

z AA Agglometate C45AS 11.0 14.0 Zeolite A 15.0 6.0 Carbonate 4.0 | 8.0 MA/AA 4.0 2.0 CMC 0.5 0.5 DTPMP 0.4 @ 0.4 Spray On C25E5 5.0 5.0 Perfilme 0.5 0.5 Additives Tripeptide 2 7.0 2.0 HEDP 0.5 0.3 SKS 6 13.0 10.0 Citrate 3.0 1.0 TAED 5.0 7.0 Percarbonate 20.0 20.0 SRP 1 0.3 0.3 Protease 1.4 1.4 Lipase 0.4 0.4 Cellulase 0.6 0.6 Amylase 0.6 0.6 Silicone antifoam 5.0 5.0 Brightener 1 0.2 0.2 Brightener 2 0.2 Balance (Moisture and 100 100 Miscellaneous) Density (goitre) 850 850 Example 9 The following liquid detergent formulations, according to the present invention were prepared:

AB AC AD AE AF AG AH AI LAS 10.0 13.0 9.0 25.0 - - - C25AS 4.0 1.0 2.0 10.0 - 13.0 18.0 15.0 C25E3S 1.0 - - 3.0 - 2.0 2.0 4.0 C25E7 6.0 8.0 13.0 2.5 - - 4.0 4.0 TFAA - - - 4.5 - 6.0 8.0 8.0 QAS - - - - 3.0 1.0 - TPKFA 2.0 - 13.0 2.0 - 15.0 7.0 7.0 Rapeseed fatty acids acids - - - 5.0 - - 4.0 4.0 Citric acid 2.0 3.0 1.0 1.5 1.0 1.0 1.0 1.0 Dodecenyl/tetradecenyl 12.0 10.0 - - 15.0 - - succinic acid Oleic acid 4.0 2.0 1.0 - 1.0 - - Ethanol 4.0 4.0 7.0 2.0 7.0 2.0 3.0 2.0 1,2 Pro anediol 4.0 4.0 2.0 7.0 6.0 8.0 10.0 13.0 Mono Ethanol Amine - - - 5.0 - - 9.0 9.0 Tri Ethanol Amine- - 8 - - - - NaOH us to pH 8.0 8.0 7.6 7.7 8.0 7.5 8.0 8.2 Ethoxylated 0.5 - 0.5 0.2 - - 0.4 0.3 tetraethylene pentamine Tripeptide 1 0.2 0.4 0.8 1.5 2.0 2.5 3.5 4.5 DTPMP 1.0 1.0 0.5 1.0 2.0 1.2 1.0 SRP2 0.3 3 - 0.3 0.1 - - 0.2 0.1 PVNO 0.1 Protease 0.5 0.5 0.4 0.25 - 0.5 0.3 0.6 Alcalase - - - - 1.5 - - Lipase - 0.10 - 0.01 - - 0.15 0.15 Amylase 0.25 0.25 0.6 0.5 0.25 0.9 0.6 0.6 Cellulase - - - 0.05 - - 0.15 0.15 Endolase - - - 0.10 - - 0.07 Boric acid 0.1 0.2 - 2.0 1.0 1.5 2.5 2.5 Na formate - - 1.0 - - - -

Ca chloride 0.01 0.01 - - - - 5 Bentonite clay 4.0 4.0 - Suspending clay SD3 - - - 0.6 0.3 - Balance (Moisture and 100 100 100 100 100 100 100 100 Miscellaneous)

Claims (12)

1. CLAIMS 1. A tripeptide builder material, characterized in that the tripeptide contains phenylalanine.
2. 2. A tripeptide builder material according to Claim 1 wherein said tripeptide contains histidine.
3. 3. A tripeptide builder material according to any of Claim 1-2 wherein the tripeptide contains aspartic acid.
4. 4. A tripeptide builder material, characterized in that the tripeptide consists of phenylalanine, histidine and aspartic acid.
5. 5. A polymeric tripeptide builder material comprising units of any of the tripeptides in accord with Claims 1-4.
6. 6. A bleaching composition comprising the tripeptide builder material according to any of Claims 1-4 or the polymeric tripeptide builder material according to Claim 5 or mixtures thereof, and an oxygen releasing bleach system.
7. 7. A bleaching composition according to Claim 6 wherein said oxygen releasing bleach system comprises an inorganic perhydrate salt and an organic peroxyacid precursor compound.
8. 8. A bleaching composition according to Claim 7 wherein said inorganic perhydrate salt is present at a level from of 1% to 95% by weight of the bleaching composition
9. 9. A bleaching composition according to Claim 7 wherein said peroxy acid bleach precursor is present at a level from of 1 % to 50% by weight of the bleaching composition.
10. 10. A detergent composition comprising the tripeptide builder material according to any of Claims 14 or the polymeric tripeptide builder material according to Claim 5 or mixtures thereof.
11. 11. A detergent composition comprising the bleaching composition according to any of Claims 6-11.
12. 12. The use of a detergent composition according to either of Claims 12 or 13 in a laundry washing method.