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WO1992007927A1 - Fabric treatment composition - Google Patents

Fabric treatment composition Download PDF

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Publication number
WO1992007927A1
WO1992007927A1 PCT/US1991/007919 US9107919W WO9207927A1 WO 1992007927 A1 WO1992007927 A1 WO 1992007927A1 US 9107919 W US9107919 W US 9107919W WO 9207927 A1 WO9207927 A1 WO 9207927A1
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WO
WIPO (PCT)
Prior art keywords
fabric treatment
composition according
treatment composition
weight
clay
Prior art date
Application number
PCT/US1991/007919
Other languages
French (fr)
Inventor
Christian August Antoine Marteleur
Andre Christian Convents
Original Assignee
The Procter & Gamble Company
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 The Procter & Gamble Company filed Critical The Procter & Gamble Company
Publication of WO1992007927A1 publication Critical patent/WO1992007927A1/en

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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
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • C11D3/3738—Alkoxylated silicones
    • 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
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
    • C11D3/1246—Silicates, e.g. diatomaceous earth
    • C11D3/1253—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • C11D3/3742—Nitrogen containing silicones

Definitions

  • the present invention relates to fabric treatment compositions.
  • fabric treatment compositions comprising softening clays and softening polysiloxanes and flocculating agents.
  • compositions is well known in the art and has found wide commercial application.
  • Clays have been used in particular because their application and the softening they impart on fabrics is different from that of cationic softeners.
  • DE-3 833 648 describes improved agglomeration of detergents containing softening clay. Further a humectant is provided in EP-A-313 146 facilitating improved wetability of the clay.
  • EP-A-354 856 the combination of siloxanes and cationic quaternary ammonium is disclosed.
  • EP-A-381487 discloses liquid detergent compositions containing a clay component which is pretreated with siloxane to supply phase and viscosity stability while not deteriorating the cleaning performance.
  • polysiloxanes softening clay and a clay flocculating agent, preferably as an intimate mixture. Further it is an objective to provide softening-through-the-wash detergent compositions comprising such fabric treatment compositions, preferably granular detergent compositions.
  • the present invention relates to fabric treatment compositions comprising a softening clay, a clay
  • the substituted polysiloxane is present in said compositions at 0.1% to 50% of said softening clay and the clay
  • flocculating agent is present at 0.005% to 20% of said softening clay.
  • the fabric treatment composition can be applied in liquid or granular products and used as such in the wash or in the rinse cycle of the laundry.
  • the fabric treatment composition can be applied in liquid or granular products and used as such in the wash or in the rinse cycle of the laundry.
  • said fabric treatment compositions are comprised in softening-through-the-wash (STW) detergent compositions.
  • STW detergent compositions contain at least one surfactant and from 1% to 50%, preferably from 1% to 20%, more
  • compositions Even more preferred are particles comprising
  • compositions or preferably in granular STW detergent compositions.
  • - softening refers to a range of fabric treatments other than cleaning; in particular it includes softening, anti-wrinkling, anti-static and ease of ironing treatments.
  • - clays are softening clays as described in more
  • One essential component of the present compositions consists of a clay. Any clay used in the art or mixtures thereof can be used in the present invention.
  • smectite clays exhibit a cation-exchange capacity of at least 50 meq per 100 grams of clay.
  • clays which have a particle size in the 5-50 micrometer range.
  • smectite clays are hectorite clays of the general formula
  • the value of (x+y) is the layer charge of the hectorite clay.
  • the hectorite clays suitable for the detergent compositions of the present invention have a layer charge distribution such that at least 50% is in the range of from 0.23 to 0.31.
  • hectorite clays of natural origin having a layer charge distribution such that at least 65% is in the range of from 0.23 to 0.31.
  • Specific non-limiting examples of fabric softening smectite clay minerals are :
  • Clay flocculating agents are not commonly used in fabric treatment compositions. On the contrary, one is inclined to use clay dispersants, which aid in removing clay stains from fabrics. Clay flocculating agents are, however, very well known in other industries like oil well drilling, and for ore flotation in metallurgy. Most of these materials are fairly long chain polymers and
  • copolymers derived from such monomers as ethylene oxide, acrylamide, acrylic acid, dimethylamino ethyl methacrylate, vinyl alcohol, vinyl pyrrolidone, ethylene imine. Gums, like guar gum, are suitable as well.
  • polymers of ethylene oxide, acryl amide, or acrylic acid are in the range of from 100,000 to 10 million.
  • the most preferred polymer is poly-(ethylene-oxide).
  • Molecular weight distributions can be readily determined using gel permeation chromatography, against standards of poly-(ethylene-oxide) of narrow molecular weight
  • the amount of clay flocculating agent ranges from 0.005% to 20%.
  • clay flocculating agents having a (weight average) molecular weight of less than 800,000 the preferred amount is from 2% to 20% of the clay.
  • (weight average) molecular weight above 800,000 the preferred amount is from 0.005% to 2% of the clay.
  • the amount of siloxane ranges from 0.1% to 50% by weight of the clay, preferably from 0.1% to 20%, most preferably from 1.0% to 10%.
  • siloxanes useful in the present invention can be described as softening, straight or branched,
  • organo-functional polydi-C 1-4 -alkyl siloxane having the general formula :
  • R is C 1-4 -alkyl
  • R' is R or a polyether of (C 2 - 3 -oxides) 1-50 , with a capping group of H or R;
  • R" is branched or straight C 1-4 -alkyl
  • q 1 and q 2 are integers
  • n is an integer from 0 to 6;
  • Y is a polyether of (C 2-3 -oxides) k , where k has an average value from 7 to 100, with a capping group of H or C 1-4 -alkyl; or Y is : whereby X and V are selected from -H;
  • W can be selected from X and V. or Y is
  • T and P are selected from -H, -COOH, -CO-O-C 1-2 -alkyl, or
  • n being an integer from 4 to 100.
  • the most preferred siloxanes of said general formula are characterized by either of the following
  • R' is methyl and R" is propyl
  • y is a polyether consisting of 12 ethyl oxides and an acetic acid capping group or
  • R' is methyl and R" is propyl
  • y is a polyether consisting of 12 ethyl oxides and acetic acid capping group or
  • R is methyl and R" is methyl-2-propyl
  • y is an -(amino ethyl)amine
  • the fabric treatment compositions herein can comprise in addition to the essential compounds other useful
  • Suitable examples among these other softening compounds include the following softening amines of the formula
  • R 1 R 2 R 3 N, wherein R 1 is C 6 to C 20 hydrocarbyl
  • R 2 is C 1 to C 20 hydrocarbyl
  • R 3 is C 1 to
  • the softening amine is present as a complex with a fatty acid of the formula RCOOH, wherein R is a C 9 to C 20 alkyl or alkenyl. It is desirable that the
  • softening amine/fatty acid complex be present in the form of microfine particles, having a particle size in the range from 0.1 to 20 micrometers. These softening amine/fatty acid complexes are disclosed more fully in EP-A-133 804. Preferred are fabric treatment compositions that contain from 1% to 10% of the amine.
  • Suitable are also complexes of the above described softening amine and phosphate esters of the formula
  • R 8 and R 9 are C 1 -C 20 alkyl, or ethoxylated
  • Suitable optional softening ingredients are also the softening amines disclosed in GB 2 173 827, in particular the substituted cyclic amines. Suitable are imidazolines of the general formula
  • Preferred fabric treatment compositions contain from 1% to 10% of the substituted cyclic amine.
  • optional ingredients include the softening amides of the formula R 10 R 11 NCOR 12 , wherein R 10 and R 11 are independently selected from C 1 -C 22
  • R 12 is hydrogen, or a C 1 -C 22 alkyl or alkenyl, an
  • aryl or alkyl-aryl group aryl or alkyl-aryl group.
  • Preferred examples of these softening amides are ditallow-acetamide and
  • the softening amides are preferably present in the fabric treatment softening composition at 1%-10%.
  • the fabric treatment compositions herein can contain, in addition to ingredients already mentioned, various other optional ingredients typically used in commercial products to provide aesthetic or additional product performance benefits.
  • Typical ingredients include pH regulants, humectants, which are more fully disclosed in EP-313 146, silicones, perfumes, dyes, hydrotropes and gel-control agents, freeze-thaw stabilizers, bactericides or preservatives.
  • Preferred fabric treatment compositions contain from 0.05% to 30% of these ingredients.
  • the fabric treatment compositions of the present invention can be provided in liquid or granular form. It can be applied in the rinse cycle or, together with a detergent composition, in the wash. In a preferred
  • said fabric treatment compositions are comprised in softening-through-the-wash (STW) detergent compositions.
  • STW softening-through-the-wash
  • said fabric treatment compositions are particulate agglomerates, and in a more preferred embodiment said agglomerates are integrated in particulate detergent compositions to form granular STW detergents.
  • the fabric treatment compositions of the present invention can be provided in liquid form as an aqueous dispersion. If provided as an aqueous dispersion, the fabric treatment composition preferably further comprises an antisettling agent. According to the invention, the aqueous dispersion comprises clay of the fabric treatment composition from 0.5% to 30% of the aqueous dispersion and siloxane and clay flocculating agent in according amounts.
  • a suitable antisettling agent must provide a fully activated support matrix to suspend particles within the liquid compositions.
  • Particles in this sense are granules or droplets of suspendable size for the desired properties of the liquid composition. Usually said particle size will be less than 200 micrometers.
  • the individual particles can comprise one or more of the essential or optional compounds of the fabric treatment compositions.
  • an acceptable antisettling agent must not adversely effect the viscosity, elasticity or aesthetics of the product.
  • antisettling agents are used in the compositions of the present invention at levels of from 0.25% to 5%.
  • Bentone R rheological additives are described as the products of a clay which contains a negative layer-lattice and an organic compound which contains a cation and at least one alkyl group containing at least 10 carbon atoms. Bentones have the property of swelling in certain organic liquids.
  • Organophillic quaternized ammonium-clay compounds are preferred antisettling agents as described in U.S. patent 4,287,086.
  • Fumed silicas are generally defined as a colloidal form of silica made by combustion of silicon tetrachloride in a hydrogen-oxygen furnace. Fumed silicas are normally used as thickener, thixotropic and reinforcing agents in inks, resins, rubber, paints and cosmetics.
  • CAB-O-SIL R fumed silicas are suitable antisettling agents for use in this invention.
  • antisettling agents are cellulosic suspending agents.
  • carboxy-alkyl-celluloses preferably carboxy-methyl-cellulose, are excellent suspending agents.
  • other suspending agents known in the art can be applied.
  • cellulosic suspending agents are also suitable antisettling agents.
  • a liquid which can be described as stringy (i.e., elastic), thick or lumpy is undesirable.
  • the antisettling agents described above avoid these
  • a viscosity in the range of from about 100 to about 1000 kg/(ms) is desirable.
  • liquid composition it is also desirable for the liquid composition to exhibit plastic rheology. Materials that exhibit plastic flow characteristics will flow only after an applied shearing stress exceeds a critical minimum value.
  • Fabric treatment compositions of the present invention can also be provided in granular form as particulate compositions.
  • particulate compositions comprise clay of the fabric treatment
  • composition from at least 15%, preferably above 50%, of the particulate compositions and siloxane and clay flocculating agent in according amounts.
  • the compounds of said fabric treatment composition are preferably
  • the typical agglomerate size useful in the present invention is from 0.2 to 1.2 millimeter on average, with individual agglomerates ranging from 0.05 mm to
  • the clays, siloxanes and clay flocculating agents are selected from the group consisting of the following classes:
  • the agglomerates containing clay and siloxane are made separately from the agglomerates containing the clay flocculating agent and both kinds of agglomerates are mixed according to the invention.
  • Agglomeration methods and equipment suitable for use herein include those methods known in the art.
  • Agglomeration methods include usage of agglomeration aids including for example sodium carbonate, sodium sulfate, potassium carbonate, potassium sulfate, magnesium sulfate, lithium sulfate, lithium carbonate, sodium citrate, sodium sesquicarbonate and water.
  • agglomeration aids including for example sodium carbonate, sodium sulfate, potassium carbonate, potassium sulfate, magnesium sulfate, lithium sulfate, lithium carbonate, sodium citrate, sodium sesquicarbonate and water.
  • equipment suitable for agglomeration of clay from smaller particles include a Dravo R pan agglomerator, Loedige R agglomeration KG/Schugi Beldner R -Granulator, whirling knife continuous vertical fluidized bed agglomerator.
  • the fabric treatment composition is present from 1% to 50%, preferably from 1% to 20% and most preferably from 5% to 15% of the total composition.
  • STW-detergent compositions of the present invention can be provided in liquid or granular form.
  • the detergent compounds can be either prepared and then mixed with the aqueous suspension or the granular agglomerates of the fabric treatment composition or the detergent compound and the fabric treatment composition compound can be prepared together in an integral process.
  • STW-detergent compositions and preferably granular SWT-detergent compositions of the present invention are characterized by comprising at least one surfactant in addition to said fabric treatment compositions. They can further contain other usual detergent compounds, in quantities common in the art.
  • Detersive surfactants particularly useful herein include well-known synthetic anionic, nonionic, amphoteric and zwitterionic surfactants. Typical of these are the alkyl benzene sulfonates, alkyl- and alkylether sulfates, paraffin sulfonates, olefin sulfonates, alkoxylated
  • detersive surfactants contain an alkyl group in the C 9 -C 18 range; the anionic detersive surfactants can be used in the form of their sodium, potassium or triethanolammonium salts; the nonionics generally contain from about 5 to about 17 ethylene oxide groups.
  • U.S. patent 3 995 669 contains detailed listings of such typical detersive surfactants.
  • C 11 -C 16 alkyl benzene sulfonates, C 12 -C 18 paraffin- sulfonates and alkyl phenols are especially preferred in the compositions of the present type.
  • water-soluble soaps e.g. the common sodium and potassium coconut or tallow soaps well-known in the art.
  • the detergent composition can comprise as little as 1% surfactant compositions but preferably it will contain 5% to 50%, more preferably 10% to 30% surfactants. Mixtures of the ethoxylated nonionics with anionics such as the alkyl benzene sulfonates, alkyl sulfates and paraffin sulfonates are preferred for through-the-wash cleansing of a broad spectrum of soils and stains from fabrics.
  • detergent composition useful in the present invention can contain other ingredients which aid in their cleaning performance.
  • detergent compositions can contain a detergent builder and/or metal ion sequestrant or chelant.
  • Compounds classifiable and well-known in the art as detergent builders include the nitrilotriacetates, polycarboxylates, citrates, carbonates, zeolites, water-soluble phosphates such as tri-polyphosphate and sodium ortho- and
  • Metal ion sequestrants include all of the above, plus materials like ethylenediaminetetraacetate, the
  • U.S. patent 3 579 454 discloses typical examples of the use of such materials in various cleaning compositions.
  • the builder/sequestrant will comprise about 0.5% to 45% of the total composition.
  • the 1-10 micron size zeolite (e.g. zeolite A) builders, disclosed in German patent 2 422 655, are especially preferred for use in low-phosphate compositions.
  • Particularly suitable phosphate-free builders are ether carboxylate mixtures comprising a) from 1% to 99% of the builder of a tartrate
  • X is H or salt-forming cation
  • X is H or a salt-forming cation.
  • Typical detergent compositions useful in the present invention contain from 5% to 35% of this builder system.
  • the detergent compositions herein also preferably contain enzymes or enzyme mixtures to enhance their cleaning performance on a variety of soils and stains.
  • Hydrolases and isomerases like amylase, lipase, cellulase, and protease enzymes suitable for use in detergents are well-known in the art and in commercially available liquid and granular detergents.
  • Commercial detersive enzymes preferably a mixture of amylase, lipase, cellulase and protease
  • Detergent cellulase enzymes which provide both cleaning and softening benefits, particularly to cotton fabrics, are highly desirable in the compositions of this invention.
  • compositions herein can advantageously contain a bleaching agent, especially a peroxyacid bleaching agent.
  • a bleaching agent especially a peroxyacid bleaching agent.
  • peroxyacid bleaching agent encompasses both peroxyacids per se and systems which are able to yield peroxyacids in situ.
  • Peroxyacids per se are meant to include the alkaline and alkaline-earth metal salts thereof.
  • Peroxyacids and diperoxyacids are commonly used; examples are
  • diperoxydodecanoic acid DPDA
  • peroxyphthalic acid DPDA
  • Systems capable of delivering peracids in situ consist of a peroxygen bleaching agent and an activator thereof.
  • the peroxygen bleaching agents are those capable of yielding hydrogen in an aqueous solution; these compounds are well-known in the art, and include hydrogen peroxide, alkali-metal peroxides, organic peroxide bleaching agents such as urea peroxide, inorganic persalt bleaching agents such as alkali metal perborates, percarbonates,
  • bleach activators include esters, imides, imidazoles, oximes, and carbonates.
  • preferred materials include methyl o-acetoxy benzoates; sodium-p-acetoxy benzene sulfonates such as sodium-4-nonanoxyloxybenezene sulfonate, and sodium-4-decanoyloxybenzenesulfonate : biophenol A dia ⁇ etate; tetra acetyl ethylene diamine; tetra acetyl hexamethylene diamine; tetra acetyl methylene diamine.
  • alpha-substituted alkyl or alkenyl esters such as sodium-4(2-chlorooactanoyloxy)benzene sulfonate, sodium 4-(3,5,5-trimethyl hexanoyloxy)benzene sulfonate.
  • Suitable peroxyacids are also peroxygen bleach activators such as described in EP-A-116 571, i.e., compounds of the general type RXAOOH and RXAL, wherein R is a hydroxcarbyl group, X is a hetero-atom, A is a carbonyl bridging group and L is a leaving group, especially oxybenzenesulfonate.
  • polymeric soil release agents are useful in the detergent compositions of the present invention. They include cellulosic derivatives such as hydroxyether cellulosic polymers, copolymeric blocks of ethylene terphthalate and polyethylene oxide or polypropylene oxide terephthalate, cationic guar gums, and the like.
  • the cellulosic derivatives that are functional as soil release agents are commercially available and include hydroxyethers of cellulose such as Methocel R (Dow) and cationic cellulose ether derivatives such as Polymer
  • JR-124 R , JR-400 R , and JR-30M R (Union Carbide).
  • Preferred cellulosic soil release agents for use herein have a viscosity in aqueous solution at 20oC of 15 to
  • hydroxybutyl methylcellulose or mixtures thereof.
  • a more preferred soil release agent is a copolymer having random blocks of ethylene terphthalate and
  • polyethylene oxide (PEO) terephthalate More specifically, these polymers are comprised of repeating units of ethylene terephthalte and PEO terephthalate in a mole ratio of ethylene terephthalate units of from about 25:75 to about 35:65, said PEO terephthalate units containing polyethylene oxide having molecular weights of from 300 to 2000.
  • the molecular weight of this polymeric soil release agent is in the range of from 25,000 to 55,000.
  • U.S. patents 3,959,230 and 3,893,929 disclose similar copolymers in a large variety. It has been found previously that these polymeric soil release agents provide a more uniform distribution over a range of fabrics and can therefore yield improved fabric care qualities.
  • Another preferred polymeric soil release agent is a crystallizable polyester with repeat units of ethylene terephthalate units containing about 10-15% by weight of ethylene terephthalate units together with about 80% to about 90% by weight of polyoxyethylene terephthalate units, derived from a polyoxyethylene glycol of average molecular weight 300-5,000, and the mole ratio of ethylene
  • terephthalate units to polyoxyethylene terephthalate units in the crystallizable polymeric compound is between 2:1 and 6:1.
  • this type of polymer include the
  • these soil release agents will generally comprise from 0.05% to 5% of the detergent compositions.
  • TAS Sodium salt of tallow alcohol sulfate
  • AOS Sodium salt of alpha-olefin (C12-18)
  • TAE-11 Tallow alcohol ethoxylated with about 11 moles of ethylene oxide
  • FA25E7 Fatty alcohol (C12-15) ethoxylated with 7 moles of ethylene oxide
  • Zeolite A Sodium salt of fully hydrated zeolite 4A
  • NTA Sodium salt of nitrilotriacetate
  • AA 30 /MA 70 copolymer of acrylic acid 30 mole-% and maleic acid 70 mole-%-50-70 Mmole weight
  • compositions A,B,A',B' 500g of smectite clay having a cation exchange capacity of 70-80meq/100g was mixed with 50g polysiloxane (10% of clay).
  • the polysiloxane was of the general formula with R being methyl, R' being a strait propyl, q being 329, m being 21, n being 1 and y being a polyether of 12 ethyl oxides capped with acetic acid. Both compounds were intimately mixed and agglomerated by using a Braun R
  • the agglomeration aid was water and the agglomerates were sieved to a
  • Composition A was prepared by dry mixing of the
  • composition B was prepared by dry mixing the clay granules with the same detergent granules of composition I, Table I, such that the resulting STW detergent also contained 10.5% of the
  • compositions A',B' were prepared in the same way as compositions A,B respectively but using detergent composition II of Table I which contains clay flocculating agent.
  • compositions a,b,a',b' respectively as in example I were prepared except for using 5g of
  • polysiloxane i.e. 1% of the weight of the clay.
  • the polysiloxane used in this example II was Silwet L720 from Union Carbide.
  • detergent compositions can be used together with the clay-siloxane agglomerates and flocculating agent.
  • Alternative granular detergent compositions are listed in Table II.
  • granules are initially dry mixed with granules containing the flocculating agent have been found to be equally effective when added to granular detergent compositions.
  • Example XV 80g of smectite clay are dispersed in 1 kg of water. 8g of siloxane as described in example I or II are added under strong agitation. The flocculating agent and this mixture are added together to the last rinse of the wash.
  • Example XV 80g of smectite clay are dispersed in 1 kg of water. 8g of siloxane as described in example I or II are added under strong agitation. The flocculating agent and this mixture are added together to the last rinse of the wash.
  • Example XV 80g of smectite clay are dispersed in 1 kg of water. 8g of siloxane as described in example I or II are added under strong agitation. The flocculating agent and this mixture are added together to the last rinse of the wash.
  • a stabilized aqueous dispersion of the fabric treatment composition is prepared by using a propeller mixer at rotation of 100 to 1000 per second and combining liquid carrier, softening clay, siloxane and an antisettling agent in said propeller mixer for about 30 minutes.
  • resulting mixture is then passed 4 to 10 times through a colloid mill (e.g. model SD-40, distributed by Tekmor R Corporation) providing a shear of 10-40x10 3 per second at a temperature of 20-40oC. Then the flocculating agent is added slowly using said propeller mixer for an additional 5 minutes.
  • a colloid mill e.g. model SD-40, distributed by Tekmor R Corporation
  • the resulting mixture is stable, i.e. shows now phase separation or settling of the clay, for several weeks at ambient conditions.
  • composition of granular detergents All values in weight percent.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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Abstract

The siloxanes are incorporated at an amount of 0.1 % to 50 % by weight of said softening clay and the flocculating agents are incorporated at an amount of 0.005 % to 20 % by weight of said softening clay. Softening through the wash detergent compositions containing from 1 % to 50 % by weight of said detergent compositions of the fabric treatment compositions are also disclosed.

Description

FABRIC TREATMENT COMPOSITION
Technical Field
The present invention relates to fabric treatment compositions. In particular it relates to fabric treatment compositions comprising softening clays and softening polysiloxanes and flocculating agents.
Background of the Invention
The use of softening clays in fabric treatment
compositions is well known in the art and has found wide commercial application. Clays have been used in particular because their application and the softening they impart on fabrics is different from that of cationic softeners.
Examples and description of clay applications can be found in a large number of publications, for example U.S.
3,966,629 or U.K. 1,400,898 describe different kinds of clays and modes of application of them in fabric treatment compositions. Combination of clay with softening amines has also been disclosed to provide softening enhancement. Further
DE-3 833 648 describes improved agglomeration of detergents containing softening clay. Further a humectant is provided in EP-A-313 146 facilitating improved wetability of the clay.
Other agents which have been known for fabric treatment benefits are substituted polysiloxanes. They cure disclosed for use at low levels for example in EP-A-150 867 or
EP-A-150 872. Relatively high concentrations of
substituted polysiloxanes are not uncommon to the textile industry and have been disclosed for example in
EP-A-58 493 or U.S. 4,247,592.
In EP-A-354 856 the combination of siloxanes and cationic quaternary ammonium is disclosed.
EP-A-381487 discloses liquid detergent compositions containing a clay component which is pretreated with siloxane to supply phase and viscosity stability while not deteriorating the cleaning performance.
It has now been found that the fabric treatment performance of substituted polysiloxanes, softening clay and a clay flocculating agent is substantially higher than was to be expected by simple additive performance.
Particularly when providing intimate mixtures of softening clay and substituted polysiloxanes in the presence of clay flocculating agents the softening performance rises beyond the expectable additive softening performance of the compounds provided. It is an objective of the invention to provide fabric treatment compositions containing substituted
polysiloxanes, softening clay and a clay flocculating agent, preferably as an intimate mixture. Further it is an objective to provide softening-through-the-wash detergent compositions comprising such fabric treatment compositions, preferably granular detergent compositions.
It is another aspect of the invention to have very good environmental compatibility of the softening composition in all modes of application or use.
Summary of the Invention
The present invention relates to fabric treatment compositions comprising a softening clay, a clay
flocculating agent, and a substituted polysiloxane. The substituted polysiloxane is present in said compositions at 0.1% to 50% of said softening clay and the clay
flocculating agent is present at 0.005% to 20% of said softening clay.
The fabric treatment composition can be applied in liquid or granular products and used as such in the wash or in the rinse cycle of the laundry. In a preferred
embodiment of the present invention said fabric treatment compositions are comprised in softening-through-the-wash (STW) detergent compositions. According to the invention STW detergent compositions contain at least one surfactant and from 1% to 50%, preferably from 1% to 20%, more
preferably from 5% to 15%, of said fabric treatment
compositions. Even more preferred are particles comprising
coagglomerated softening clay and substituted
polysiloxanes. Together with clay flocculating agents these particles can be used in granular softening
compositions or preferably in granular STW detergent compositions.
Definitions
Unless stated otherwise, the following definitions will be used hereinafter :
- percentages are percent by weight
- softening refers to a range of fabric treatments other than cleaning; in particular it includes softening, anti-wrinkling, anti-static and ease of ironing treatments.
- clays are softening clays as described in more
detail below
- siloxanes are substituted polysiloxanes for
fabric treatment as described in more detail below.
Detailed Description of the Invention
The softening clay
One essential component of the present compositions consists of a clay. Any clay used in the art or mixtures thereof can be used in the present invention.
Included among such clays are various heat-treated kaolins and various multi-layer smectites. As known from the art, preferred smectite clays exhibit a cation-exchange capacity of at least 50 meq per 100 grams of clay.
Further preferred are clays which have a particle size in the 5-50 micrometer range.
Additionally preferred smectite clays are hectorite clays of the general formula
[(Mg3-xLix) Si4-yMeIII yO10(OH2-zFz)]-(x+y)(x+y)Mn+
n wherein y=0; or, if y
Figure imgf000007_0001
=0, MeIII is Al, Fe, or B; Mn+ is a monovalent (n=1) or divalent (n=2) metal ion, for example selected from Na, K, Mg, Ca, Sr. The value of (x+y) is the layer charge of the hectorite clay. The hectorite clays suitable for the detergent compositions of the present invention have a layer charge distribution such that at least 50% is in the range of from 0.23 to 0.31.
Preferred are hectorite clays of natural origin having a layer charge distribution such that at least 65% is in the range of from 0.23 to 0.31. Specific non-limiting examples of fabric softening smectite clay minerals are :
Sodium Montmorillonite
Borck R
Volclay BC R
Gelwhite GP R
Thixo-Jel R
Ben-A-Gel R
Sodium Hectorite
Veegum F R
Laponite SP R
Sodium Saponite
Barasym NAS 100 R
Calcium Montmorillonite
Soft Clark R
Gelwhite L R
Imvite K R
Lithium Hectorite
Barasym LIH 200 R The clay flocculating Agent
Clay flocculating agents are not commonly used in fabric treatment compositions. On the contrary, one is inclined to use clay dispersants, which aid in removing clay stains from fabrics. Clay flocculating agents are, however, very well known in other industries like oil well drilling, and for ore flotation in metallurgy. Most of these materials are fairly long chain polymers and
copolymers derived from such monomers as ethylene oxide, acrylamide, acrylic acid, dimethylamino ethyl methacrylate, vinyl alcohol, vinyl pyrrolidone, ethylene imine. Gums, like guar gum, are suitable as well.
Preferred are polymers of ethylene oxide, acryl amide, or acrylic acid. It has been found that these polymers dramatically enhance the deposition of a clay if their molecular weights (weight average) are in the range of from 100,000 to 10 million. Preferred are such polymers having a (weight average) molecular weight of from 150.000 to 5 million, more preferably from 150,000 to 800,000.
The most preferred polymer is poly-(ethylene-oxide). Molecular weight distributions can be readily determined using gel permeation chromatography, against standards of poly-(ethylene-oxide) of narrow molecular weight
distributions.
The amount of clay flocculating agent, expressed as percent of the clay, ranges from 0.005% to 20%. For clay flocculating agents having a (weight average) molecular weight of less than 800,000, the preferred amount is from 2% to 20% of the clay. For (weight average) molecular weight above 800,000 the preferred amount is from 0.005% to 2% of the clay.
The subsituted polysiloxane
The amount of siloxane ranges from 0.1% to 50% by weight of the clay, preferably from 0.1% to 20%, most preferably from 1.0% to 10%.
The siloxanes useful in the present invention can be described as softening, straight or branched,
organo-functional polydi-C1-4-alkyl siloxane having the general formula :
Figure imgf000010_0001
wherein R is C1-4-alkyl;
R' is R or a polyether of (C2-3-oxides)1-50, with a capping group of H or R;
R" is branched or straight C1-4-alkyl;
q1 and q2 are integers;
m and (q1 + q2) are integers from 4 to 1700;
n is an integer from 0 to 6;
Y is a polyether of (C2-3-oxides)k, where k has an average value from 7 to 100, with a capping group of H or C1-4-alkyl; or Y is : whereby X and V are selected from -H;
-C1-30-alkyl, -C-aryl;
-C5-6-cycloalkyl; -C1-6-NH2;
-COR; with the proviso that the
Figure imgf000011_0002
nitrogen can be quaternized such as to represent :
Figure imgf000011_0001
whereby W can be selected from X and V. or Y is
whereby T and P are selected from -H, -COOH, -CO-O-C1-2-alkyl, or
epoxy-C5-6-cycloalkyl
Figure imgf000011_0003
Preferred siloxanes of said general formula are
characterized by
q1 + q2 being an integer from 50 to 1500 and
m being an integer from 4 to 100. The most preferred siloxanes of said general formula are characterized by either of the following
- R, R' is methyl and R" is propyl and
(q1 + q2) is 329 and m is 21 and n is 1 and
y is a polyether consisting of 12 ethyl oxides and an acetic acid capping group or
- R, R' is methyl and R" is propyl and
(q1 + q2) is 485 and m is 15 and n is 1 and
y is a polyether consisting of 12 ethyl oxides and acetic acid capping group or
- R, R' is methyl and R" is methyl-2-propyl
(q1 + q2) is 1470 and m is 30 and n is 1 and
y is an -(amino ethyl)amine
Optional softening ingredients
The fabric treatment compositions herein can comprise in addition to the essential compounds other useful
compounds known in the art. These compounds can be
present, depending on application and preparation needs or other desires, in an added amount of up to 85% of the fabric treatment composition.
Suitable examples among these other softening compounds include the following softening amines of the formula
R1R2R3N, wherein R1 is C6 to C20 hydrocarbyl,
R2 is C1 to C20 hydrocarbyl, and R3 is C1 to
C10 hydrocarbyl or hydrogen. A preferred amine of this type is ditallowmethylamine. Preferably, the softening amine is present as a complex with a fatty acid of the formula RCOOH, wherein R is a C9 to C20 alkyl or alkenyl. It is desirable that the
softening amine/fatty acid complex be present in the form of microfine particles, having a particle size in the range from 0.1 to 20 micrometers. These softening amine/fatty acid complexes are disclosed more fully in EP-A-133 804. Preferred are fabric treatment compositions that contain from 1% to 10% of the amine.
Suitable are also complexes of the above described softening amine and phosphate esters of the formula
Figure imgf000013_0001
wherein R8 and R9 are C1-C20 alkyl, or ethoxylated
alkyl groups of the general formula alkyl-(OCH2CH2)y, wherein the alkyl substituent is C1-C20, preferably
C8-C16, and y is an integer of 1 to 15, preferably
2-10, most preferably 2-5. Softening amine/phosphate ester complexes of this type are more fully disclosed in EP-A-168
889.
Suitable optional softening ingredients are also the softening amines disclosed in GB 2 173 827, in particular the substituted cyclic amines. Suitable are imidazolines of the general formula
1-(C12-22-alkyl)-amide-(C1-4-alkyl)-2-(C12_22-alkyl) imidazoline. A preferred cyclic amine is
1-tallowamidoethyl-2-tallowimidazoline. Preferred fabric treatment compositions contain from 1% to 10% of the substituted cyclic amine.
Further examples of optional ingredients include the softening amides of the formula R10R11NCOR12, wherein R10 and R11 are independently selected from C1-C22
alkyl, alkenyl, hydroxy-alkyl, aryl, and alkyl-aryl groups; R12 is hydrogen, or a C1-C22 alkyl or alkenyl, an
aryl or alkyl-aryl group. Preferred examples of these softening amides are ditallow-acetamide and
ditallow-benzamide. Good results are obtained when the softening amides are present in the composition in the form of a composite with a fatty acid or with a phosphate ester, as described hereinbefore for the softening amines.
The softening amides are preferably present in the fabric treatment softening composition at 1%-10%.
Moreover, the fabric treatment compositions herein can contain, in addition to ingredients already mentioned, various other optional ingredients typically used in commercial products to provide aesthetic or additional product performance benefits. Typical ingredients include pH regulants, humectants, which are more fully disclosed in EP-313 146, silicones, perfumes, dyes, hydrotropes and gel-control agents, freeze-thaw stabilizers, bactericides or preservatives. Preferred fabric treatment compositions contain from 0.05% to 30% of these ingredients. Industrial Applications
The fabric treatment compositions of the present invention can be provided in liquid or granular form. It can be applied in the rinse cycle or, together with a detergent composition, in the wash. In a preferred
embodiment said fabric treatment compositions are comprised in softening-through-the-wash (STW) detergent compositions.
Further in a preferred embodiment said fabric treatment compositions are particulate agglomerates, and in a more preferred embodiment said agglomerates are integrated in particulate detergent compositions to form granular STW detergents.
Liquid and Granular Application
The fabric treatment compositions of the present invention can be provided in liquid form as an aqueous dispersion. If provided as an aqueous dispersion, the fabric treatment composition preferably further comprises an antisettling agent. According to the invention, the aqueous dispersion comprises clay of the fabric treatment composition from 0.5% to 30% of the aqueous dispersion and siloxane and clay flocculating agent in according amounts.
A suitable antisettling agent must provide a fully activated support matrix to suspend particles within the liquid compositions. Particles in this sense are granules or droplets of suspendable size for the desired properties of the liquid composition. Usually said particle size will be less than 200 micrometers. The individual particles can comprise one or more of the essential or optional compounds of the fabric treatment compositions.
Finally, an acceptable antisettling agent must not adversely effect the viscosity, elasticity or aesthetics of the product.
These antisettling agents, or mixtures thereof, are used in the compositions of the present invention at levels of from 0.25% to 5%.
Organophillic quaternized ammonium-clay compounds for example of the Bentone R family of clays and also fumed silicas are examples of antisettling agents suitable for use in the present invention. Bentone R rheological additives are described as the products of a clay which contains a negative layer-lattice and an organic compound which contains a cation and at least one alkyl group containing at least 10 carbon atoms. Bentones have the property of swelling in certain organic liquids.
Organophillic quaternized ammonium-clay compounds are preferred antisettling agents as described in U.S. patent 4,287,086.
Fumed silicas also provide excellent antisettling characteristics to the compositions of the present
invention. Fumed silicas are generally defined as a colloidal form of silica made by combustion of silicon tetrachloride in a hydrogen-oxygen furnace. Fumed silicas are normally used as thickener, thixotropic and reinforcing agents in inks, resins, rubber, paints and cosmetics.
CAB-O-SILR fumed silicas are suitable antisettling agents for use in this invention.
Other antisettling agents are cellulosic suspending agents. For example carboxy-alkyl-celluloses, preferably carboxy-methyl-cellulose, are excellent suspending agents. Furthermore other suspending agents known in the art can be applied.
Mixtures of Bentone R clays, fumed silicas or
cellulosic suspending agents are also suitable antisettling agents.
The rheological characteristics of the resulting liquid compositions are very important to a commercially
acceptable product. A liquid which can be described as stringy (i.e., elastic), thick or lumpy is undesirable. The antisettling agents described above avoid these
undesirable rheological properties while maintaining a pourable, homogeneous product with good consumer appeal. A viscosity in the range of from about 100 to about 1000 kg/(ms) is desirable.
It is also desirable for the liquid composition to exhibit plastic rheology. Materials that exhibit plastic flow characteristics will flow only after an applied shearing stress exceeds a critical minimum value.
Fabric treatment compositions of the present invention can also be provided in granular form as particulate compositions. According to the invention particulate compositions comprise clay of the fabric treatment
composition from at least 15%, preferably above 50%, of the particulate compositions and siloxane and clay flocculating agent in according amounts.
To provide particulate compositions, the compounds of said fabric treatment composition are preferably
agglomerated. The typical agglomerate size useful in the present invention is from 0.2 to 1.2 millimeter on average, with individual agglomerates ranging from 0.05 mm to
2.5 mm.
According to a preferred execution of the invention the clays, siloxanes and clay flocculating agents are
agglomerated together from a slurry.
In a further preferred embodiment the agglomerates containing clay and siloxane are made separately from the agglomerates containing the clay flocculating agent and both kinds of agglomerates are mixed according to the invention.
Agglomeration methods and equipment suitable for use herein include those methods known in the art.
Agglomeration methods include usage of agglomeration aids including for example sodium carbonate, sodium sulfate, potassium carbonate, potassium sulfate, magnesium sulfate, lithium sulfate, lithium carbonate, sodium citrate, sodium sesquicarbonate and water. Non-limiting examples of the equipment suitable for agglomeration of clay from smaller particles include a DravoR pan agglomerator, LoedigeR agglomeration KG/Schugi BeldnerR-Granulator, whirling knife continuous vertical fluidized bed agglomerator.
NiroR Fluidized Bed agglomerator, ObrianR
Mixer/Agglomerator, and a LittlefordR mixer (Littleford Brothers, Inc., Florence, Kentucky, USA, eg. Model FM130D).
Other methods and equipment which use larger amounts of water, including the manufacture of agglomerates directly from a slurry, include a spray drying tower, and a prilling tower.
On a laboratory scale, food processors which are widely available to the general public can be used to agglomerate smaller clay particles into agglomerates in the disclosed size ranges.
Detergent Compositions
If applied together with detergent compositions, preferably as integral part of STW-detergent compositions the fabric treatment composition is present from 1% to 50%, preferably from 1% to 20% and most preferably from 5% to 15% of the total composition.
STW-detergent compositions of the present invention can be provided in liquid or granular form. To provide liquid or granular STW detergent compositions the detergent compounds can be either prepared and then mixed with the aqueous suspension or the granular agglomerates of the fabric treatment composition or the detergent compound and the fabric treatment composition compound can be prepared together in an integral process. STW-detergent compositions and preferably granular SWT-detergent compositions of the present invention are characterized by comprising at least one surfactant in addition to said fabric treatment compositions. They can further contain other usual detergent compounds, in quantities common in the art.
Detersive surfactants particularly useful herein include well-known synthetic anionic, nonionic, amphoteric and zwitterionic surfactants. Typical of these are the alkyl benzene sulfonates, alkyl- and alkylether sulfates, paraffin sulfonates, olefin sulfonates, alkoxylated
(especially ethoxylated) alcohols and alkyl phenols, amine oxides, alpha-sulfonates of fatty acids and of fatty acid esters, and the like, which are well-known from the detergency art. In general, such detersive surfactants contain an alkyl group in the C9-C18 range; the anionic detersive surfactants can be used in the form of their sodium, potassium or triethanolammonium salts; the nonionics generally contain from about 5 to about 17 ethylene oxide groups. U.S. patent 3 995 669 contains detailed listings of such typical detersive surfactants. C11-C16 alkyl benzene sulfonates, C12-C18 paraffin- sulfonates and alkyl phenols are especially preferred in the compositions of the present type.
Also useful herein as the surfactant are the
water-soluble soaps, e.g. the common sodium and potassium coconut or tallow soaps well-known in the art.
The detergent composition can comprise as little as 1% surfactant compositions but preferably it will contain 5% to 50%, more preferably 10% to 30% surfactants. Mixtures of the ethoxylated nonionics with anionics such as the alkyl benzene sulfonates, alkyl sulfates and paraffin sulfonates are preferred for through-the-wash cleansing of a broad spectrum of soils and stains from fabrics.
Detersive Adjuncts
The detergent composition useful in the present invention can contain other ingredients which aid in their cleaning performance. For example, it is highly preferred that detergent compositions contain a detergent builder and/or metal ion sequestrant or chelant. Compounds classifiable and well-known in the art as detergent builders include the nitrilotriacetates, polycarboxylates, citrates, carbonates, zeolites, water-soluble phosphates such as tri-polyphosphate and sodium ortho- and
pyro-phosphates, silicates, and mixtures thereof. Metal ion sequestrants include all of the above, plus materials like ethylenediaminetetraacetate, the
amino-polyphosphonates (DEQUEST R) and a wide variety of other poly-functional organic acids and salts too numerous to mention in detail here. U.S. patent 3 579 454 discloses typical examples of the use of such materials in various cleaning compositions. In general, the builder/sequestrant will comprise about 0.5% to 45% of the total composition. The 1-10 micron size zeolite (e.g. zeolite A) builders, disclosed in German patent 2 422 655, are especially preferred for use in low-phosphate compositions.
Particularly suitable phosphate-free builders are ether carboxylate mixtures comprising a) from 1% to 99% of the builder of a tartrate
monosuccinate component of the structure
Figure imgf000022_0001
wherein X is H or salt-forming cation; and
b) from 1% to 99% of the builder by weight of a tartrate discussinate component of the structure :
Figure imgf000022_0002
wherein X is H or a salt-forming cation.
Builder systems of this type are more fully disclosed in U.S. patent 4,663,071.
Typical detergent compositions useful in the present invention contain from 5% to 35% of this builder system.
The detergent compositions herein also preferably contain enzymes or enzyme mixtures to enhance their cleaning performance on a variety of soils and stains. Hydrolases and isomerases like amylase, lipase, cellulase, and protease enzymes suitable for use in detergents are well-known in the art and in commercially available liquid and granular detergents. Commercial detersive enzymes (preferably a mixture of amylase, lipase, cellulase and protease) are typically used at levels of 0.001% to 5% of said detergent compositions. Detergent cellulase enzymes, which provide both cleaning and softening benefits, particularly to cotton fabrics, are highly desirable in the compositions of this invention.
Further said detergent compositions can contain other ingredients which aid in their cleaning performance. For example, the compositions herein can advantageously contain a bleaching agent, especially a peroxyacid bleaching agent. In the context of the present invention, the term
peroxyacid bleaching agent encompasses both peroxyacids per se and systems which are able to yield peroxyacids in situ.
Peroxyacids per se are meant to include the alkaline and alkaline-earth metal salts thereof. Peroxyacids and diperoxyacids are commonly used; examples are
diperoxydodecanoic acid (DPDA) or peroxyphthalic acid.
Systems capable of delivering peracids in situ consist of a peroxygen bleaching agent and an activator thereof.
The peroxygen bleaching agents are those capable of yielding hydrogen in an aqueous solution; these compounds are well-known in the art, and include hydrogen peroxide, alkali-metal peroxides, organic peroxide bleaching agents such as urea peroxide, inorganic persalt bleaching agents such as alkali metal perborates, percarbonates,
perphosphates and persilicates. The liberated hydrogen peroxide reacts with a bleach activator to form the peroxyacid bleach. Classes of bleach activators include esters, imides, imidazoles, oximes, and carbonates. In these classes, preferred materials include methyl o-acetoxy benzoates; sodium-p-acetoxy benzene sulfonates such as sodium-4-nonanoxyloxybenezene sulfonate, and sodium-4-decanoyloxybenzenesulfonate : biophenol A diaσetate; tetra acetyl ethylene diamine; tetra acetyl hexamethylene diamine; tetra acetyl methylene diamine.
Other highly preferred peroxygen bleach activators which are disclosed in U.S. patents 4.483.778 and
4.539.130, are alpha-substituted alkyl or alkenyl esters, such as sodium-4(2-chlorooactanoyloxy)benzene sulfonate, sodium 4-(3,5,5-trimethyl hexanoyloxy)benzene sulfonate. Suitable peroxyacids are also peroxygen bleach activators such as described in EP-A-116 571, i.e., compounds of the general type RXAOOH and RXAL, wherein R is a hydroxcarbyl group, X is a hetero-atom, A is a carbonyl bridging group and L is a leaving group, especially oxybenzenesulfonate.
Also polymeric soil release agents are useful in the detergent compositions of the present invention. They include cellulosic derivatives such as hydroxyether cellulosic polymers, copolymeric blocks of ethylene terphthalate and polyethylene oxide or polypropylene oxide terephthalate, cationic guar gums, and the like. The cellulosic derivatives that are functional as soil release agents are commercially available and include hydroxyethers of cellulose such as MethocelR (Dow) and cationic cellulose ether derivatives such as Polymer
JR-124R, JR-400R, and JR-30MR (Union Carbide).
Other effective soil release agents are cationic guar gums such as Jaguar PlauR (Stein Hall) and Gendrive
458R (General Mills).
Preferred cellulosic soil release agents for use herein have a viscosity in aqueous solution at 20ºC of 15 to
75,000 kg/(ms) and are selected from the group consisting of methyl cellulose; hydroxypropyl methylcellulose,
hydroxybutyl methylcellulose, or mixtures thereof.
A more preferred soil release agent is a copolymer having random blocks of ethylene terphthalate and
polyethylene oxide (PEO) terephthalate. More specifically, these polymers are comprised of repeating units of ethylene terephthalte and PEO terephthalate in a mole ratio of ethylene terephthalate units of from about 25:75 to about 35:65, said PEO terephthalate units containing polyethylene oxide having molecular weights of from 300 to 2000. The molecular weight of this polymeric soil release agent is in the range of from 25,000 to 55,000. U.S. patents 3,959,230 and 3,893,929 disclose similar copolymers in a large variety. It has been found previously that these polymeric soil release agents provide a more uniform distribution over a range of fabrics and can therefore yield improved fabric care qualities. Another preferred polymeric soil release agent is a crystallizable polyester with repeat units of ethylene terephthalate units containing about 10-15% by weight of ethylene terephthalate units together with about 80% to about 90% by weight of polyoxyethylene terephthalate units, derived from a polyoxyethylene glycol of average molecular weight 300-5,000, and the mole ratio of ethylene
terephthalate units to polyoxyethylene terephthalate units in the crystallizable polymeric compound is between 2:1 and 6:1. Examples of this type of polymer include the
commercially available material ZelconR 5126 (from
Dupont) and MileaseR T (from ICI).
Preferred soil release polymers and methods for their preparation are described in EP-A-185,417.
If utilized, these soil release agents will generally comprise from 0.05% to 5% of the detergent compositions.
EXAMPLES
The following examples illustrate preferred executions of this invention, and facilitate its understanding.
Abbreviations for individual ingredients in the examples have the following meaning :
LAS : Sodium salt of linear dodecyl benzene
sulfonate
TAS : Sodium salt of tallow alcohol sulfate
AOS : Sodium salt of alpha-olefin (C12-18)
sulfonate
TAE-11 : Tallow alcohol ethoxylated with about 11 moles of ethylene oxide
FA25E7 : Fatty alcohol (C12-15) ethoxylated with 7 moles of ethylene oxide
DTMA : Ditallow methyl amine
CFA : Coconut fatty acid
HFA : Hydrogenated C16-22 fatty acid
Zeolite A : Sodium salt of fully hydrated zeolite 4A
(average particle size between 2-6 microns)
NTA : Sodium salt of nitrilotriacetate
Copolymer : AA30/MA70 = copolymer of acrylic acid 30 mole-% and maleic acid 70 mole-%-50-70 Mmole weight
CMC : Sodium salt of carboxymethylcellulose
EDTA : Sodium salt of ethylene diamine
tetra-acetate Example I
For compositions A,B,A',B' the following was prepared : 500g of smectite clay having a cation exchange capacity of 70-80meq/100g was mixed with 50g polysiloxane (10% of clay). The polysiloxane was of the general formula with R being methyl, R' being a strait propyl, q being 329, m being 21, n being 1 and y being a polyether of 12 ethyl oxides capped with acetic acid. Both compounds were intimately mixed and agglomerated by using a BraunR
multipractic-electronic-de-luxe mixer. The agglomeration aid was water and the agglomerates were sieved to a
particle size from 0.15 to 0.85 mm. A reference without the siloxane was also prepared in the same manner.
Composition A was prepared by dry mixing of the
clay/siloxane granules with the detergent granules of composition I, according to Table I, such that the
resulting softening-through-the-wash detergent contained 10.5% of the smectite clay. As a reference composition B was prepared by dry mixing the clay granules with the same detergent granules of composition I, Table I, such that the resulting STW detergent also contained 10.5% of the
smectite clay. Further compositions A',B' were prepared in the same way as compositions A,B respectively but using detergent composition II of Table I which contains clay flocculating agent.
To facilitate a softness comparison of A,B,A',B' the following test procedure was used :
3.5 kg of clean fabric laundry loads are washed in an automatic drum washing machine MieleR 423 at 60ºC for 1.5 hours. The hardness of the water was 3.0 mmol of Ca2+ and Mg2+ per liter and the composition concentration was 1% in the wash liquid. For softness evaluation swatches of terry towel softness tracers were added. The softness tracers were line dried prior to assessment of softness. Comparative softness assessment was done by expert judges using a scale of 0 to 4 panel-score-units (PSU). In this scale 0 is given for no difference and 4 is given for maximum difference. Softness was assessed after one and after four wash cycles.
Softness evaluation results of compositions A,B,A', B'
Result
comparison of one wash cycle four wash cycles composition
1. A to B - 0.1 PSU 0.0 PSU
2. A' to B' 0.6 PSU 0.9 PSU
Taking result 1 there is no additive softening effect realized by adding siloxane to a clay-containing STW detergent. The effect of the invention is demonstrated in result 2 where the combination of clay, flocculating agent and siloxane shows surprisingly clear softening superiority over prior art composition containing clay and flocculating agent.
Example II
The same compositions a,b,a',b' respectively as in example I were prepared except for using 5g of
polysiloxane, i.e. 1% of the weight of the clay. The polysiloxane used in this example II was Silwet L720 from Union Carbide.
Result
comparison of one wash cycle four wash cycles composition
3. a to b - 0.2 0.1
4. a' to b' 0.3 0.6
Examples III - XII
According to the invention other detergent compositions can be used together with the clay-siloxane agglomerates and flocculating agent. Alternative granular detergent compositions are listed in Table II.
Similar compositions in which the clay/siloxane
granules are initially dry mixed with granules containing the flocculating agent have been found to be equally effective when added to granular detergent compositions.
Example XIII
Exemplifying usage of the fabric treatment composition as aqueous dispersion the following composition showed excellent softening performance when added in an
appropriate amount to the last rinse of the wash :
80g of smectite clay are dispersed in 1 kg of water. 8g of siloxane as described in example I or II are added under strong agitation. The flocculating agent and this mixture are added together to the last rinse of the wash. Example XV
A stabilized aqueous dispersion of the fabric treatment composition is prepared by using a propeller mixer at rotation of 100 to 1000 per second and combining liquid carrier, softening clay, siloxane and an antisettling agent in said propeller mixer for about 30 minutes. The
resulting mixture is then passed 4 to 10 times through a colloid mill (e.g. model SD-40, distributed by TekmorR Corporation) providing a shear of 10-40x103 per second at a temperature of 20-40ºC. Then the flocculating agent is added slowly using said propeller mixer for an additional 5 minutes.
The resulting mixture is stable, i.e. shows now phase separation or settling of the clay, for several weeks at ambient conditions.
Table I
Composition of granular detergents. All values in weight percent.
Figure imgf000032_0001
Figure imgf000033_0001
Figure imgf000034_0001

Claims

1. A fabric treatment composition comprising
a softening clay and
- 0.005%-20% by weight of said softening clay of a clay flocculating agent and
- 0.1%-50% by weight of said softening clay of straight or branched, substituted polysiloxane of the general formula
Figure imgf000035_0001
wherein R is C1-4-alkyl;
R' is R or a polyether of (C2-3-oxides)1-50, with a capping group of H or R;
R" is branched or straight C1-4-alkyl;
q1 and q2 are integers;
m and (q1 + q2) are integers from 4 to 1700;
n is an integer from 0 to 6;
Y is a polyether of (C2-3-oxides)k, where k has an average value from 7 to 100, with a capping group of H or C1-4-alkyl; or Y is : whereby X and V are selected from -H;
-C1-30-alkyl, -C-aryl;
-C5-6-cycloalkyl; -C1-6-NH2;
-COR; with the proviso that the
Figure imgf000036_0001
nitrogen can be quaternized such as to represent :
Figure imgf000036_0002
whereby W can be selected from X and V. or Y is
whereby T and P are selected from -H, -COOH, -CO-O-C1-2-alkyl, or
epoxy-C5-6-cycloalkyl
Figure imgf000036_0003
2. A fabric treatment composition according to any of the previous claims characterized in that said softening clay is a smectite clay with a cation exchange capacity of at least 50 meq/100 gr.
3. A fabric treatment composition according to claims 1-4 characterized in that said clay flocculating agent has a weight average molecular weight from 800,000 to 5,000,000 and is present from 0.005% to 2% of said softening clay amount.
4. A fabric treatment composition according to claims 1-4 characterized in that said clay flocculating agent has a weight average molecular weight from 150,000 to 800,000 and is present from 2% to 20% of said softening clay amount.
5. A fabric treatment composition according to any of the previous claims characterized in that the substituted polysiloxane amount ranges from 0.1% to 20% of said
softening clay amount.
6. A fabric treatment composition according to any of the previous claims characterized in that the substituted polysiloxane amount ranges from 1% to 10% of said softening clay amount.
7. A fabric treatment composition according to any of the previous claims characterized in that the substituted polysiloxane of the general formula of claim 1 has said integers (q1 + q2) from 50 to 1500 and said integer m from 4 to 100.
8. A fabric treatment composition according to any of the previous claims characterized in that the substituted polysiloxane of the general formula of claim 1 is selected from either
- R, R' is methyl and R" is propyl and
(q1 + q2) is 329 and m is 21 and n is 1 and
y is a polyether consisting of 12 ethyl oxides and an acetic acid capping group or
- R, R' is methyl and R" is propyl and
(q1 + q2) is 485 and m is 15 and n is 1 and
y is a polyether consisting of 12 ethyl oxides and acetic acid capping group or
- R, R' is methyl and R" is methyl-2-propyl
(q1 + q2) is 1470 and m is 30 and n is 1 and
y is an -(amino ethyl) amine.
9. A fabric treatment composition according to any of the previous claims characterized in that it further contains softening amines in an amount from 1% to 10% by weight of said fabric treatment composition.
10. A fabric treatment composition according to any of the previous claims characterized in that it further contains humectant in an amount from 1% to 10% by weight of said fabric treatment composition.
11. A fabric treatment composition according to any of the previous claims characterized in that it further contains silicone in an amount from 1% to 30% by weight of said fabric treatment composition.
12. A fabric treatment composition according to any of the previous claims characterized in that it is in the form of an aqueous dispersion and containing said softening clay in an amount from 0.5% to 30% by weight of said aqueous dispersion.
13. An aqueous dispersion according to claim 13
characterized in that it also contains an antisettling agent at an amount from 0.25% to 5% by weight of said aqueous dispersion.
14. A fabric treatment composition according to claims 1 to 11 characterized in that it is in the form of granular agglomerates having an average size range of 0.5mm to 1.2mm with individual agglomerates having a size range from
0.05mm to 2.5mm and comprising said softening clay in an amount of at least 15% by weight of said fabric treatment composition.
15. A fabric treatment composition according to claim 14 characterized in that it comprises said softening clay in an amount of more than 50% by weight of said fabric treatment compositions.
16. A laundry detergent composition comprising at least one surface active agent characterized in that it also contains from 1% to 50% by weight of said laundry detergent composition of the fabric treatment composition according to any of the previous claims.
17. A laundry detergent composition according to claim 16 characterized in that said fabric treatment composition is present in an amount from 1% to 20%, preferably 5% to 15%, by weight of said laundry detergent composition.
18. A laundry detergent composition according to claims 16 or 17 characterized in that it further comprises a detergent builder in an amount from 0.5% to 45% by weight of said laundry detergent composition.
19. A laundry detergent composition according to claims 16, 17 or 18 characterized in that it further comprizes amylase, lipase, cellulase or protease enzymes or mixtures thereof in an amount from 0.001% to 5% by weight of said laundry detergent composition.
20. A laundry detergent composition according to claims 16, 17, 18 or 19 characterized in that it further comprizes a bleaching agent or soil release agent.
21. A laundry detergent composition according to claims 16 to 20 characterized in that said laundry detergent composition is liquid.
22. A laundry detergent composition according to claims 16 to 20 characterized in that said laundry detergent composition is granular.
PCT/US1991/007919 1990-10-29 1991-10-25 Fabric treatment composition WO1992007927A1 (en)

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EP90202868A EP0483411B1 (en) 1990-10-29 1990-10-29 Fabric treatment composition
EP90202868.7 1990-10-29

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CA (1) CA2095244A1 (en)
DE (1) DE69019973T2 (en)
IE (1) IE913748A1 (en)
PT (1) PT99365A (en)
TR (1) TR25527A (en)
WO (1) WO1992007927A1 (en)

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DE4222483A1 (en) * 1992-07-09 1994-01-13 Pfersee Chem Fab Organosiloxanes with residues containing nitrogen and with ether groups
EP0652282A1 (en) * 1993-07-16 1995-05-10 Unilever Plc Use of fabric treatment compositions
FR2713237A1 (en) * 1993-12-03 1995-06-09 Rhone Poulenc Chimie Detergent compsn. contg. tenside, builder
US6040288A (en) * 1997-02-21 2000-03-21 Rhodia Inc. Fabric color protection compositions and methods
EP1561804A1 (en) * 2004-02-03 2005-08-10 The Procter & Gamble Company A solid particulate laundry detergent composition comprising clay and polydimethysiloxane
US7074754B2 (en) 2004-02-03 2006-07-11 The Procter & Gamble Company Composition for use in the laundering or treatment of fabrics
EP1749879A1 (en) 2005-08-05 2007-02-07 The Procter & Gamble Company A composition for use in the laundering or treatment of fabrics, and a process for making the composition
EP1749878A1 (en) 2005-08-05 2007-02-07 The Procter and Gamble Company A process for preparing a textile treatment auxiliary composition and a process for preparing a composition for the laundering and treatment of fabric
EP1749877A1 (en) 2005-08-05 2007-02-07 The Procter and Gamble Company A particulate textile treatment composition comprising silicone, clay and anionic surfactant
JP2007519811A (en) * 2004-02-03 2007-07-19 ザ プロクター アンド ギャンブル カンパニー Composition for use in textile laundering or treatment applications and method for producing said composition
JP2007522289A (en) * 2004-02-03 2007-08-09 ザ プロクター アンド ギャンブル カンパニー Composition for use in washing or treating fabrics
JP2007522291A (en) * 2004-02-03 2007-08-09 ザ プロクター アンド ギャンブル カンパニー Solid particulate laundry detergent composition comprising clay and polydimethylsiloxane
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EP0652282A1 (en) * 1993-07-16 1995-05-10 Unilever Plc Use of fabric treatment compositions
FR2713237A1 (en) * 1993-12-03 1995-06-09 Rhone Poulenc Chimie Detergent compsn. contg. tenside, builder
US6040288A (en) * 1997-02-21 2000-03-21 Rhodia Inc. Fabric color protection compositions and methods
JP2007522288A (en) * 2004-02-03 2007-08-09 ザ プロクター アンド ギャンブル カンパニー Solid particulate laundry detergent composition comprising clay and polydimethylsiloxane
JP2007522290A (en) * 2004-02-03 2007-08-09 ザ プロクター アンド ギャンブル カンパニー Composition for use in washing or treating fabrics
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US7754673B2 (en) 2004-02-03 2010-07-13 The Procter & Gamble Company Composition for use in the laundering or treatment of fabrics, and a process for making the composition
JP2007519811A (en) * 2004-02-03 2007-07-19 ザ プロクター アンド ギャンブル カンパニー Composition for use in textile laundering or treatment applications and method for producing said composition
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US7074754B2 (en) 2004-02-03 2006-07-11 The Procter & Gamble Company Composition for use in the laundering or treatment of fabrics
US7304024B2 (en) 2004-02-03 2007-12-04 The Procter & Gamble Company Composition for use in the laundering or treatment of fabrics, and a process for making the composition
US7459423B2 (en) 2004-02-03 2008-12-02 The Procter & Gamble Company Composition for use in the laundering or treatment of fabrics
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US7696144B2 (en) 2005-08-05 2010-04-13 The Procter & Gamble Co. Particulate textile treatment composition comprising silicone, clay and anionic surfactant
EP1749877A1 (en) 2005-08-05 2007-02-07 The Procter and Gamble Company A particulate textile treatment composition comprising silicone, clay and anionic surfactant
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TR25527A (en) 1993-05-01
IE913748A1 (en) 1992-05-22
PT99365A (en) 1992-09-30
EP0483411A1 (en) 1992-05-06
CA2095244A1 (en) 1992-04-30
DE69019973D1 (en) 1995-07-13
DE69019973T2 (en) 1995-11-16

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