EP1902120A1 - Compositions de traitement pour lessive - Google Patents

Compositions de traitement pour lessive

Info

Publication number
EP1902120A1
EP1902120A1 EP06743030A EP06743030A EP1902120A1 EP 1902120 A1 EP1902120 A1 EP 1902120A1 EP 06743030 A EP06743030 A EP 06743030A EP 06743030 A EP06743030 A EP 06743030A EP 1902120 A1 EP1902120 A1 EP 1902120A1
Authority
EP
European Patent Office
Prior art keywords
conjugate
polysaccharide
emulsion
mixtures
cationic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06743030A
Other languages
German (de)
English (en)
Inventor
Christopher Clarkson Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Publication of EP1902120A1 publication Critical patent/EP1902120A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/001—Softening compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/662—Carbohydrates or derivatives
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/667—Neutral esters, e.g. sorbitan esters
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/001—Softening compositions
    • C11D3/0015—Softening compositions liquid
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • C11D3/227—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin with nitrogen-containing groups

Definitions

  • the present invention relates to the deposition during laundering of non-silicone fabric lubricants such as sugar polyesters by the use of cationic polysaccharides.
  • compositions which are capable of imparting softening to substrates such as fabric, hair and skin are well known in the art. To date, silicones and related compounds are widely used as softening agents.
  • silicones have a number of inherent disadvantages, hence the need exists for new softening compounds that do not have the disadvantages of silicones.
  • compositions comprising a water-soluble or dispersible polysaccharide having a hydrophobic agent bonded thereto by a hydrolytically stable bond and a sugar polyester.
  • the hydrophobic polysaccharide acts as a deposition aid for the sugar polyester.
  • WO 04/022685 and WO 04/022686 disclose a delivery system for water insoluble fabric care benefit agents, including silicones, dispersible polyolefins and polymer latexes, based on a cationic cellulosic delivery enhancing agent.
  • compositions comprising a non-silicone fabric lubricant which in turn comprises a sugar polyester, and a delivery enhancing agent that is a cationic polysaccharide give benefits of improved biodegradability, lower cost and less hydrophobing without any loss of softening benefit.
  • a polysaccharide conjugate comprising:
  • non-silicone fabric lubricant is in the dispersed phase of an emulsion.
  • a second aspect of the invention provides an emulsion comprising the conjugate of the first aspect.
  • a third aspect of the invention provides a granule comprising the emulsion of the second aspect.
  • a fourth aspect of the invention provides a laundry treatment composition comprising the conjugate of the first aspect .
  • an aqueous wash medium comprising the conjugate as provided by the first aspect of the invention. - A -
  • a method for depositing a sugar polyester onto a substrate comprising contacting, in an aqueous medium, the substrate and a conjugate according to the first aspect of the invention.
  • a seventh aspect of the invention provides a use of the conjugate according to the first aspect of the invention to provide a softening benefit to a substrate.
  • the non-silicone fabric lubricant is in the dispersed phase of an emulsion.
  • the emulsion may be dried or otherwise encapsulated, to provide a dispersible form of the polysaccharide conjugate.
  • the dispersible form can comprise an adjunct, preferably a granulate, suitable for inclusion in a laundry composition.
  • the level of the cationic polysaccharide and non- silicone fabric lubricant conjugate in a fully formulated laundry composition will be from 0.01 to 15 percent (%) by weight of the fully formulated composition.
  • the aqueous wash medium of the fifth aspect may contain further components, accordant with normal laundry product dosages.
  • the conjugate of the present invention comprises from 10% to 98%, by weight of the conjugate, of at least one water insoluble fabric care benefit agent which comprises a non-silicone fabric lubricant and from 2% to 20%, by weight of the conjugate, of at least one delivery enhancing agent that is a cationic polysaccharide with a backbone comprising ⁇ i_ 4 linkages.
  • the conjugate may optionally further comprise from 0.1% to 15% by weight of the conjugate of an anionic, nonionic, cationic or zwitterionic emulsifying surfactant or mixture thereof.
  • the conjugate itself is understood to mean a discrete moiety which is pre-made before addition as part of a laundry formulation.
  • the conjugate of the present invention comprises from 2% to 20% by weight of the conjugate, of at least one delivery enhancing agent that is a cationic polysaccharide with a backbone comprising ⁇ i_ 4 linkages.
  • the cationic polysaccharide is a ⁇ 1-4 -linked polysaccharide having an affinity for cellulose.
  • the cationic polysaccharide may be straight or branched.
  • a polysaccharide comprises a plurality of saccharide rings which have pendant hydroxyl groups.
  • these hydroxyl groups may be independently substituted by, or replaced with, one or more other substituents .
  • An example of such a substituent is a hydrophobic agent for example an alkyl chain.
  • the "average degree of substitution" for a given class of substituent means the average number of substituents of that class per saccharide ring for the totality of polysaccharide molecules in the sample and is determined for all saccharide rings.
  • the cationic polysaccharide preferably has the structure given by the following formula:
  • R p is a saccharide ring or oligosaccharide consisting of 2 or 3 saccharide rings
  • R 1 , R 2 , R 3 are each independently H, CH 3 , C 8 - 24 alkyl (linear or branched) ,
  • n is from 1 to 10;
  • Rx is H, CH 3 , Cs-24 alkyl (linear or branched) ,
  • Z is a chlorine ion, bromine ion, or mixture thereof;
  • R 5 is H, CH 3 , CH 2 CH 3 , or mixtures thereof;
  • R 7 is CH 3 , CH 2 CH 3 , a phenyl group, a Cs-24 alkyl group (linear or branched) , or mixture thereof; and
  • R 8 and R 9 are each independently CH 3 , CH 2 CH 3 , phenyl, or mixtures thereof:
  • R 4 is H,
  • P is a repeat unit of an addition polymer formed by radical polymerization of a cationic monomer
  • Z 1 is a chlorine ion, bromine ion or mixtures thereof and q is from 1 to 10, such that at least one of R 1 , R 2 , R 3 is cationic.
  • a preferred group of polysaccharides (locust bean gum, for example) have pendant galactose or other sugar residues which make them effectively more water dispersible/soluble than the unmodified polysaccharide backbone, but which are not hydrolysed from the backbone under conditions of use.
  • the polysaccharide has a backbone comprising ⁇ 1-4 linkages. More preferably it has a backbone that is poly-glucan, poly- mannan, or gluco-mannan or mixtures thereof and most preferably the polysaccharide is a galacto-mannan or xylo- glucan or mixtures thereof.
  • a particularly preferred group of polysaccharides is Cellulose, Locust Bean Gum, Tara Gum, Tamarind xyloglucan, and guar gum or mixtures thereof.
  • the present invention comprises from 10% to 98%, by weight of the conjugate, of at least one water insoluble fabric care benefit agent which comprises a non-silicone fabric lubricant .
  • the preferred water insoluble fabric lubricant for use in the invention is a sugar polyester (SPE) .
  • the sugar polyester is preferably selected from the group consisting of sucrose polyesters, glucose polyesters and cellobiose polyesters, and is most preferably a sucrose polyester.
  • the preferred sucrose polyesters for use in the conjugates of the present invention have 2 to 4 hydrocarbon chains per sugar ring, where the hydrocarbon chain has a length of from 12 to 22 carbon atoms.
  • a particularly preferred sucrose polyester is sucrose tetraerucate.
  • An example of a preferred sucrose polyester is Ryoto Sugar Ester ER290 supplied by Mitsubishi Kagaku Foods Corporation, which is a sucrose tetraerucate and according to the manufacturers specification is mainly Pentaerucate, Tetraerucate and Hexaerucate and has a HLB value of 2.
  • sucrose polyesters normally contain a spread of degree of substitution on the saccharide rings, for example, sucrose tetrastearate also comprises tristearate, pentastearate, hexastearate, etc. It should also be noted that a spread of fatty chain lengths may also exist: for example in ER290, according to the manufacturer, only 90% of the fatty chains are actually stearate. Furthermore, the sugar polyesters may contain traces of surfactant which is separate from the optional surfactants according to the invention.
  • Deposition of the non-silicone fabric lubricant onto a substrate includes deposition by adsorption, co- crystallisation, entrapment and/or adhesion.
  • the non-silicone fabric lubricant may or may not be chemically bonded to the polysaccharide.
  • the non-silicone fabric lubricant is not chemically bonded to the polysaccharide.
  • some of the non-silicone fabric lubricant is chemically bonded to the polysaccharide, whilst some is not.
  • chemically bonded is meant the non-silicone fabric lubricant is attached by a chemical bond (such as a covalent bond or an ionic bond) to the polysaccharide. That non-silicone fabric lubricant which is not chemically bonded to the polysaccharide may be bonded thereto by a physical bond (such as hydrogen bonds, van der waal forces, hydrophobic interactions, electrostatic interactions, etc) .
  • the ratio of non-silicone fabric lubricant which is bonded to the polysaccharide by a chemical bond to that non-silicone fabric lubricant which is not bonded by a chemical bond is in the range of from 1:1000 to 1:1 and preferably from 1:200 to 1:4.
  • the polysaccharide of the invention may further comprise a hydrophobic agent bonded thereto.
  • the optional hydrophobic agent is one that renders the material more surface active than the polysaccharide alone.
  • surface active is meant that the material tends to accumulate at oil/water interfaces and lower their surface tension.
  • the hydrophobicity should not be so great as to prevent the dissolution or dispersion of the polysaccharide in water.
  • the hydrophobic agent is preferably selected from the group consisting of hydrocarbon and hydrophobic polymer.
  • the hydrophobic agent is attached to the polysaccharide by a stable bond. That means that the bonding of the hydrophobic agent should be sufficiently stable so as not to undergo hydrolysis during processing or on storage prior to use or in the environment of the treatment process for the duration of that process. For example, in laundry cleaning applications, the bond between the hydrophobic agent and polysaccharide should be sufficiently stable so that it does not undergo hydrolysis in the wash liquor, at the wash temperature, before the non-silicone fabric lubricant has been deposited onto the fabric.
  • the bond between the hydrophobic agent and the polysaccharide is such that the decay rate constant (k ⁇ ) of the material in an aqueous solution at 0.01 wt% of the material together with 0.1 wt% of anionic surfactant at a temperature of 40°C at a pH of 10.5 is such that k d ⁇ l ⁇ "3 s "1 .
  • the non-silicone fabric lubricant of the polysaccharide conjugate as described above, is in the dispersed phase of an emulsion.
  • the polysaccharide conjugate of the invention can also be provided with further, or all, of the components in the form of an emulsion.
  • the emulsion comprises the water insoluble fabric care benefit agent and the delivery enhancing agent as the dispersed phase.
  • the dispersed phase of the emulsion comprises cationic polysaccharide with the hydrophobic agent as well as the non-silicone fabric lubricant bonded thereto.
  • the emulsion must contain another liquid component (as well as any liquid components in the conjugate of the invention, for example, the SPE) , preferably a polar solvent, such as water.
  • the emulsion has typically from 30 to 99.9%, preferably from 40 to 99% of the other liquid component, preferably a polar solvent, most preferably water.
  • Low water emulsions may be for example 30 to 60% water, preferably 40 to 55% water.
  • High water emulsions may be for example 60 to 99.9% water, preferably 80 to 99% water.
  • Moderate water emulsions may be for example 55 to 80% water.
  • the emulsion may be in a "dried" form, in which case it typically contains from 1 to 20% water. These "dried" emulsions may be incorporated into a granule. The granule may form part of or the whole of a fully formulated laundry detergent.
  • the emulsion may contain an emulsifying agent, preferably an emulsifying surfactant for the non-silicone lubricant of the invention.
  • an emulsifying agent preferably an emulsifying surfactant for the non-silicone lubricant of the invention.
  • the cationic polysaccharide is itself an emulsifying agent.
  • it is the sole emulsifying agent.
  • the emulsifying agent is especially one or more surfactants, for example, selected from any class, sub class or specific surfactant (s) disclosed herein in any context.
  • the emulsifying agent most preferably comprises or consists of a nonionic surfactant. Additionally or alternatively, one or more selected additional surfactants from anionic, cationic, zwitterionic and amphoteric surfactants may be incorporated in or used as the emulsifying agent.
  • the conjugate of the invention may further comprise from 1% to 30% by weight of the conjugate of an anionic or nonionic cleaning surfactant or mixture thereof.
  • Suitable nonionic surfactants include the (poly) -alkoxylated analogues of saturated or unsaturated fatty alcohols, for example, having from 8 to 22, preferably from 9 to 18, more preferably from 10 to 15 carbon atoms on average in the hydrocarbon chain thereof and preferably on average from 3 to 11, more preferably from 4 to 9 alkyleneoxy groups.
  • the alkyleneoxy groups are independently selected from ethyleneoxy, propyleneoxy and butylenoxy, especially ethyleneoxy and propylenoxy, or solely ethyleneoxy groups and alkyl polyglucosides as disclosed in EP 0 495 176.
  • the (poly) alkoxylated analogues of saturated or unsaturated fatty alcohols have a hydrophilic-lipophilic balance (HLB) of between 8 to 18.
  • HLB hydrophilic-lipophilic balance
  • the HLB of a polyethoxylated primary alcohol nonionic surfactant can be calculated by
  • MW (EO) the molecular weight of the hydrophilic part (based on the average number of EO groups)
  • MW(TOT) the molecular weight of the whole surfactant (based on the average chain length of the hydrocarbon chain)
  • HLB MW(EO) + 0.57 MW(PO) + 0.4 MW (BO)
  • the alkyl polyglucosides may have the following formula;
  • alkylpolyglucosides include GlucoponTM.
  • the weight ratio of cationic polysaccharide to emulsifying agent is from 1:10 to 200:1, preferably 1:5 to 10:1. It should be noted that the cationic polysaccharide is frequently not a pure material due to incomplete conversion and the ratio of the material as made to the emulsifying agent is typically around 3:1.
  • the weight ratio of insoluble fabric care benefit agent to emulsifying agent is from 1000:1 to 1:1, preferably from 60:1 to 5:1, more preferably around 33:1 (where the cationic polysaccharide is not the sole emulsifying agent) .
  • the emulsion is prepared by mixing the non-silicone lubricant and cationic polysaccharide of the invention, other liquid component (e.g. water) and preferably, also an emulsifying agent, such as a surfactant, especially a non- ionic surfactant.
  • a surfactant especially a non- ionic surfactant.
  • This mixture is then subjected to vigorous agitation e.g. in a high shear mixture to form a stable emulsion.
  • the water is then removed e.g. by spray drying.
  • the conjugate of the invention may be incorporated by admixture with other components of a laundry treatment composition.
  • the conjugate of the invention is incorporated into laundry compositions as a discrete pre-made ingredient.
  • a composition may optionally also comprise only a diluent (which may comprise solid and/or liquid) and/or also it may comprise an active ingredient.
  • the conjugate of the invention is typically included in said laundry compositions at levels of from 0.001% to 10%, preferably from 0.005% to 5%, most preferably from 0.01% to 3% by weight of the total laundry composition.
  • typical inclusion levels of the emulsion in the laundry treatment composition are from 0.01% to 40%, more preferably from 0.001% to 30%, even more preferably from 0.1% to 20%, especially from 1% to 10% by weight of the total composition.
  • compositions of the invention may be in any suitable physical form e.g. a solid such as a powder or granules, a tablet, a solid bar, a paste, gel or liquid, especially, an aqueous based liquid.
  • a solid such as a powder or granules, a tablet, a solid bar, a paste, gel or liquid, especially, an aqueous based liquid.
  • the compositions may be used in laundry compositions, especially in liquid, powder or tablet laundry composition.
  • the conjugates of the present invention may be contained in main wash (fabric washing) laundry compositions.
  • Conjugates according to the invention may contain at least one further component, for example a fabric softening agent which may be the same as but which is separate from the water insoluble fabric care benefit agent which forms part of the conjugate of the invention.
  • compositions of the invention may contain a surface- active compound (surfactant) which may be chosen from soap and non-soap anionic, cationic, nonionic, amphoteric and zwitterionic surface-active compounds and mixtures thereof.
  • surfactant may be chosen from soap and non-soap anionic, cationic, nonionic, amphoteric and zwitterionic surface-active compounds and mixtures thereof.
  • surface-active compounds are available and are fully described in the literature, for example, in "Surface- Active Agents and Detergents", Volumes I and II, by Schwartz, Perry and Berch. These surface-active compounds may be the same as but are separate from the emulsifying surfactant which optionally forms part of the conjugate of the invention.
  • the preferred detergent-active compounds that can be used are soaps and synthetic non-soap anionic and nonionic compounds.
  • compositions of the invention may contain linear alkylbenzene sulphonate, particularly linear alkylbenzene sulphonates having an alkyl chain length of C8-C15. It is preferred if the level of linear alkylbenzene sulphonate is from 0 wt% to 30 wt%, more preferably 1 wt% to 25 wt%, most preferably from 2 wt% to 15 wt%, by weight of the total composition.
  • compositions of the invention may contain other anionic surfactants in amounts additional to the percentages quoted above.
  • Suitable anionic surfactants are well-known to those skilled in the art. Examples include primary and secondary alkyl sulphates, particularly C8-C 1 5 primary alkyl sulphates; alkyl ether sulphates; olefin sulphonates; alkyl xylene sulphonates; dialkyl sulphosuccinates; and fatty acid ester sulphonates. Sodium salts are generally preferred.
  • These anionic surfactants may be the same as but are separate from the emulsifying surfactant which optionally forms part of the conjugates of the invention.
  • compositions of the invention may optionally also contain nonionic surfactant.
  • this non-ionic surfactant may be the same as but is separate from the nonionic surfactant which may be present as the emulsifying agent where the conjugate of the invention is in the form of an emulsion.
  • Nonionic surfactants that may be used include the primary and secondary alcohol ethoxylates, especially the
  • Non-ethoxylated nonionic surfactants include alkyl-polyglycosides, glycerol monoethers, and polyhydroxyamides (glucamide) .
  • the level of nonionic surfactant is from 0 wt% to 30 wt%, preferably from 1 wt% to 25 wt%, most preferably from 2 wt% to 15 wt%, by weight of the total composition.
  • surfactant surface-active compound
  • amount present will depend on the intended use of the detergent composition.
  • surfactant systems may be chosen, as is well known to the skilled formulator, for hand-washing products and for products intended for use in different types of washing machine.
  • the total amount of surfactant present will also depend on the intended end use and may be as high as 60 wt%, for example, in a composition for washing fabrics by hand. In compositions for machine washing of fabrics, an amount of from 5 to 40% by weight of the total composition is generally appropriate. Typically the compositions will comprise at least 2% surfactant e.g. from 2 to 60%, preferably from 15 to 40% most preferably from 25 to 35% by weight of the total composition.
  • Detergent compositions suitable for use in most automatic fabric washing machines generally contain anionic non-soap surfactant, or nonionic surfactant, or combinations of the two in any suitable ratio, optionally together with soap.
  • the laundry compositions of the invention will generally also contain one or more detergency builders.
  • the total amount of detergency builder in the compositions will typically range from 5 to 80 wt%, preferably from 10 to 60 wt% based on the total composition.
  • Inorganic builders that may be present include sodium carbonate, if desired in combination with a crystallisation seed for calcium carbonate, as disclosed in GB 1 437 950 (Unilever) ; crystalline and amorphous aluminosilicates, for example, zeolites as disclosed in GB 1 473 201 (Henkel) , amorphous aluminosilicates as disclosed in GB 1 473 202 (Henkel) and mixed crystalline/amorphous aluminosilicates as disclosed in GB 1 470 250 (Procter & Gamble) ; and layered silicates as disclosed in EP 164 514B (Hoechst) .
  • Inorganic phosphate builders for example, sodium orthophosphate, pyrophosphate and tripolyphosphate are also suitable for use with this invention.
  • compositions of the invention preferably contain an alkali metal, preferably sodium, aluminosilicate builder.
  • Sodium aluminosilicates may generally be incorporated in amounts of from 10 to 70% by weight (anhydrous basis), preferably from 25 to 50 wt%.
  • the alkali metal aluminosilicate may be either crystalline or amorphous or mixtures thereof, having the general formula: 0.8-1.5 Na 2 O. AI2O3. 0.8-6 SiO 2
  • These materials contain some bound water and are required to have a calcium ion exchange capacity of at least 50 mg CaO/g.
  • the preferred sodium aluminosilicates contain 1.5-3.5 SiO 2 units (in the formula above) . Both the amorphous and the crystalline materials can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature. Suitable crystalline sodium aluminosilicate ion-exchange detergency builders are described, for example, in GB 1 429 143 (Procter & Gamble) . The preferred sodium aluminosilicates of this type are the well-known commercially available zeolites A and X, and mixtures thereof.
  • the zeolite may be the commercially available zeolite 4A now widely used in laundry detergent powders.
  • the zeolite builder incorporated in the compositions of the invention is maximum aluminium zeolite P (zeolite MAP) as described and claimed in EP 384 070A (Unilever) .
  • Zeolite MAP is defined as an alkali metal aluminosilicate of the zeolite P type having a silicon to aluminium weight ratio not exceeding 1.33, preferably within the range of from 0.90 to 1.33, and more preferably within the range of from 0.90 to 1.20.
  • zeolite MAP having a silicon to aluminium weight ratio not exceeding 1.07, more preferably about 1.00.
  • the calcium binding capacity of zeolite MAP is generally at least 150 mg CaO per g of anhydrous material.
  • Organic builders that may be present include polycarboxylate polymers such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphinates; monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono-, di and trisuccinates, carboxymethyloxy succinates, carboxymethyloxymalonates, dipicolinates, hydroxyethyliminodiacetates, alkyl- and alkenylmalonates and succinates; and sulphonated fatty acid salts. This list is not intended to be exhaustive.
  • polycarboxylate polymers such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphinates
  • monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono-, di and trisuccinates, carboxymethyloxy succinates, carboxymethyloxymalonates, dipicolinates, hydroxyethy
  • Especially preferred organic builders are citrates, suitably used in amounts of from 5 to 30 wt%, preferably from 10 to 25 wt%; and acrylic polymers, more especially acrylic/maleic copolymers, suitably used in amounts of from 0.5 to 15 wt%, preferably from 1 to 10 wt%.
  • Builders both inorganic and organic, are preferably present in alkali metal salt, especially sodium salt, form.
  • compositions according to the invention may also suitably contain a bleach system.
  • Fabric washing compositions may desirably contain peroxy bleach compounds, for example, inorganic persalts or organic peroxyacids, capable of yielding hydrogen peroxide in aqueous solution.
  • Suitable peroxy bleach compounds include organic peroxides such as urea peroxide, and inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates .
  • organic peroxides such as urea peroxide
  • inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates .
  • Preferred inorganic persalts are sodium perborate monohydrate and tetrahydrate, and sodium percarbonate .
  • sodium percarbonate having a protective coating against destabilisation by moisture Especially preferred is sodium percarbonate having a protective coating against destabilisation by moisture.
  • Sodium percarbonate having a protective coating comprising sodium metaborate and sodium silicate is disclosed in GB 2 123 044B (Kao) .
  • the peroxy bleach compound is suitably present in an amount of from 0.1 to 35 wt%, preferably from 0.5 to 25 wt%.
  • the peroxy bleach compound may be used in conjunction with a bleach activator (bleach precursor) to improve bleaching action at low wash temperatures.
  • the bleach precursor is suitably present in an amount of from 0.1 to 8 wt%, preferably from 0.5 to 5 wt%.
  • Preferred bleach precursors are peroxycarboxylic acid precursors, more especially peracetic acid precursors and pernoanoic acid precursors.
  • Especially preferred bleach precursors suitable for use in the present invention are N, N, N ' , N ' , -tetracetyl ethylenediamine (TAED) and sodium nonanoyloxybenzene sulphonate (SNOBS) .
  • TAED peracetic acid precursor
  • SNOBS sodium nonanoyloxybenzene sulphonate
  • the novel quaternary ammonium and phosphonium bleach precursors disclosed in US 4 751 015 and US 4 818 426 (Lever Brothers Company) and EP 402 971A (Unilever) , and the cationic bleach precursors disclosed in EP 284 292A and EP 303 520A (Kao) are also of interest.
  • the bleach system can be either supplemented with or replaced by a peroxyacid.
  • peracids can be found in US 4 686 063 and US 5 397 501 (Unilever).
  • a preferred example is the imido peroxycarboxylic class of peracids described in EP A 325 288, EP A 349 940, DE 382 3172 and EP 325 289.
  • a particularly preferred example is phthalimido peroxy caproic acid (PAP).
  • PAP phthalimido peroxy caproic acid
  • Such peracids are suitably present at 0.1 - 12%, preferably 0.5 - 10%.
  • a bleach stabiliser may also be present.
  • Suitable bleach stabilisers include ethylenediamine tetra-acetate (EDTA) , the polyphosphonates such as Dequest (Trade Mark) and non-phosphate stabilisers such as EDDS (ethylene diamine di-succinic acid) . These bleach stabilisers are also useful for stain removal especially in products containing low levels of bleaching species or no bleaching species.
  • An especially preferred bleach system comprises a peroxy bleach compound (preferably sodium percarbonate optionally together with a bleach activator) , and a transition metal bleach catalyst as described and claimed in EP 458 397A ,EP 458 398A and EP 509 787A (Unilever) .
  • a peroxy bleach compound preferably sodium percarbonate optionally together with a bleach activator
  • a transition metal bleach catalyst as described and claimed in EP 458 397A ,EP 458 398A and EP 509 787A (Unilever) .
  • Bleach systems may comprise transition metal catalyst systems such as those disclosed in WO9965905; WO0012667; WO0012808; WO0029537, and, WO0060045. These catalyst systems have the advantage that they require no added peroxyl compounds and can work, directly or indirectly, using atmospheric oxygen.
  • compositions according to the invention may also contain one or more enzyme (s).
  • Suitable enzymes include the proteases, amylases, cellulases, oxidases, peroxidases and lipases usable for incorporation in detergent compositions.
  • Preferred proteolytic enzymes are, catalytically active protein materials which degrade or alter protein types of stains when present as in fabric stains in a hydrolysis reaction. They may be of any suitable origin, such as vegetable, animal, bacterial or yeast origin.
  • proteolytic enzymes or proteases of various qualities and origins and having activity in various pH ranges of from 4-12 are available and can be used in the instant invention.
  • suitable proteolytic enzymes are the subtilisins which are obtained from particular strains of B. Subtilis B. licheniformis, such as the commercially available subtilisins Maxatase (Trade Mark) , as supplied by Genencor International N. V., Delft, Holland, and Alcalase (Trade Mark), as supplied by Novozymes Industri A/S, Copenhagen, Denmark.
  • protease obtained from a strain of Bacillus having maximum activity throughout the pH range of 8-12, being commercially available, e.g. from Novozymes Industri A/S under the registered trade-names Esperase (Trade Mark) and Savinase (Trade-Mark) .
  • Esperase Trade Mark
  • Savinase Trade-Mark
  • Other commercial proteases are Kazusase (Trade Mark obtainable from Showa-Denko of Japan) , Optimase (Trade Mark from Miles Kali-Chemie, Hannover, West Germany) , and Superase (Trade Mark obtainable from Pfizer of U.S.A.).
  • Detergency enzymes are commonly employed in granular form in amounts of from about 0.1 to about 3.0 wt%. However, any suitable physical form of enzyme may be used.
  • compositions of the invention may contain alkali metal (preferably sodium) carbonate, in order to increase detergency and ease processing.
  • Sodium carbonate may suitably be present in amounts ranging from 1 to 60 wt%, preferably from 2 to 40 wt%. However, compositions containing little or no sodium carbonate are also within the scope of the invention.
  • Powder flow may be improved by the incorporation of a small amount of a powder structurant, for example, a fatty acid (or fatty acid soap) , a sugar, an acrylate or acrylate/maleate copolymer, or sodium silicate.
  • a powder structurant for example, a fatty acid (or fatty acid soap) , a sugar, an acrylate or acrylate/maleate copolymer, or sodium silicate.
  • a powder structurant for example, a fatty acid (or fatty acid soap) , a sugar, an acrylate or acrylate/maleate copolymer, or sodium silicate.
  • fatty acid soap suitably present in an amount of from 1 to 5 wt%.
  • detergent compositions of the invention include sodium silicate; anti-redeposition agents such as cellulosic polymers; soil release polymers; inorganic salts such as sodium sulphate; or lather boosters as appropriate; dyes; coloured speckles; fluorescers and decoupling polymers. This list is not intended to be exhaustive. However, many of these ingredients will be better delivered as benefit agent groups in materials according to the first aspect of the invention.
  • the detergent composition when diluted in the wash liquor will typically give a pH of the wash liquor from 7 to 10.5 for a main wash detergent.
  • Particulate detergent compositions are suitably prepared by spray-drying a slurry of compatible heat-insensitive ingredients, and then spraying on or post-dosing those ingredients unsuitable for processing via the slurry.
  • the skilled detergent formulator will have no difficulty in deciding which ingredients should be included in the slurry and which should not.
  • Particulate detergent compositions of the invention preferably have a bulk density of at least 400 g/1, more preferably at least 500 g/1.
  • Especially preferred compositions have bulk densities of at least 650 g/litre, more preferably at least 700 g/litre.
  • Such powders may be prepared either by post-tower densification of spray-dried powder, or by wholly non-tower methods such as dry mixing and granulation; in both cases a high-speed mixer/granulator may advantageously be used. Processes using high-speed mixer/granulators are disclosed, for example, in EP 340 013A, EP 367 339A, EP 390 251A and EP 420 317A (Unilever) .
  • Liquid detergent compositions can be prepared by admixing the essential and optional ingredients thereof in any desired order to provide compositions containing components in the requisite concentrations.
  • Liquid compositions according to the present invention can also be in compact form which means it will contain a lower level of water compared to a conventional liquid detergent.
  • Product forms include powders, liquids, gels, tablets, any of which are optionally incorporated in a water-soluble or water dispersible sachet.
  • the means for manufacturing any of the product forms are well known in the art. If the composition of the invention is to be incorporated in a powder (optionally the powder to be tableted) , and whether or not pre-emulsified, it is optionally included in a separate granular component, e.g. also containing a water soluble organic or inorganic material, or in encapsulated form.
  • the substrate may be any substrate onto which it is desirable to deposit non-silicone fabric lubricant and which is subjected to treatment such as a washing or rinsing process .
  • the substrate may be a textile fabric. It has been found that particular good results are achieved when using a natural fabric substrate such as cotton, or fabric blends containing cotton.
  • the treatment of the substrate with the material of the invention can be made by any suitable method such as washing, soaking or rinsing of the substrate.
  • the treatment will involve a washing or rinsing method such as treatment in the main wash or rinse cycle of a washing machine and involves contacting the substrate with an aqueous medium comprising the conjugate of the invention.
  • the aqueous medium may contain further components, accordant with normal laundry product dosages.
  • Example B Preparation of polysaccharide complex using co- emulsifier
  • Celquat H-100 (ex National Starch, 0.5g) and Dobanol 25-7 (ex Shell, 0.15g) was weighed into a wide-necked bottle along with 5Og of water. This mixture was agitated using an ultrasonic probe (SoniprobeTM) at half power until no undissolved material was visible (3 x 1 minute periods) . Ryoto Sugar Ester ER290 (ex Mitsubishi Kagaku, 5g) was then added to the solution. The mixture was sheared using a SilversonTM L4R high shear mixer fitted with a 25mm diameter shearing head and a square-hole, high shear screen. The mixer was set at full speed (-6000 rpm) for five minutes at room temperature to produce an emulsion consisting of droplets of the polysaccharide conjugate dispersed in an aqueous solution.
  • Example 1 Spray-Dried Powder
  • sucrose polyester and cationic cellulose were made into a discrete pre-made conjugate as described earlier, and it was this that was added as an ingredient in the full formulation. So for this example, a conjugate containing 2.5g of sucrose polyester and 0.25g of cationic cellulose was prepared and subsequently added as an ingredient to the formulation.
  • Example 2 Detergent Granulate Prepared by Non-Spray Drying Method
  • composition was prepared by the two-stage mechanical granulation method described in EP-A- 367 339.
  • sucrose polyester and cationic cellulose were made into a discrete pre-made conjugate as described earlier, and it was this that was added as an ingredient in the full formulation. So for this example, a conjugate containing 4g of sucrose polyester and 0.4g of cationic polysaccharide was prepared and subsequently added as an ingredient to the formulation.
  • Example 3 Isotropic Laundry Liquid
  • sucrose polyester and cationic cellulose were made into a discrete pre-made conjugate as described earlier, and it was this that was added as an ingredient in the full formulation. So for this example, a conjugate containing 5g of sucrose polyester and 0.25g of cationic guar gum was prepared and subsequently added as an ingredient to the formulation.
  • Example 4 Structured Laundry Liquid
  • Oleic acid (Priolene 6907) 4.5
  • sucrose polyester and cationic cellulose were made into a discrete pre-made conjugate as described earlier, and it was this that was added as an ingredient in the full formulation. So for this example, a conjugate containing 2g of sucrose polyester and 0.15g of cationic guar was prepared and subsequently added as an ingredient to the formulation.
  • Minors antiredeposition polymers transition-metal scavangers/bleach stabilisers, fluorescers, antifoams, dye ⁇ -transfer-inhibition polymers, enzymes, and perfume .

Abstract

L'invention concerne un conjugué polysaccharide comprenant de 10 % à 98 % en poids d'au moins un agent de soin pour tissu insoluble dans l'eau et constitué d'un lubrifiant pour tissu sans silicone qui est dans la phase dispersée d'une émulsion, et de 2 % à 20 % en poids d'au moins un agent améliorant la distribution et qui est un polysaccharide cationique dont le squelette comprend des liaison β1-4.
EP06743030A 2005-07-11 2006-05-23 Compositions de traitement pour lessive Withdrawn EP1902120A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0514148A GB0514148D0 (en) 2005-07-11 2005-07-11 Laundry treatment compositions
PCT/EP2006/004892 WO2007006366A1 (fr) 2005-07-11 2006-05-23 Compositions de traitement pour lessive

Publications (1)

Publication Number Publication Date
EP1902120A1 true EP1902120A1 (fr) 2008-03-26

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EP06743030A Withdrawn EP1902120A1 (fr) 2005-07-11 2006-05-23 Compositions de traitement pour lessive

Country Status (3)

Country Link
EP (1) EP1902120A1 (fr)
GB (1) GB0514148D0 (fr)
WO (1) WO2007006366A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237016A (en) * 1977-11-21 1980-12-02 The Procter & Gamble Company Textile conditioning compositions with low content of cationic materials
JP3181432B2 (ja) * 1993-06-18 2001-07-03 花王株式会社 液体柔軟仕上剤組成物
GB9911437D0 (en) * 1999-05-17 1999-07-14 Unilever Plc Fabric softening compositions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007006366A1 *

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GB0514148D0 (en) 2005-08-17

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