CA1293421C - Spray-dried granular detergent compositions containing nonionicsurfactant, polyethylene glycol, and polyacrylate - Google Patents

Spray-dried granular detergent compositions containing nonionicsurfactant, polyethylene glycol, and polyacrylate

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Publication number
CA1293421C
CA1293421C CA000513226A CA513226A CA1293421C CA 1293421 C CA1293421 C CA 1293421C CA 000513226 A CA000513226 A CA 000513226A CA 513226 A CA513226 A CA 513226A CA 1293421 C CA1293421 C CA 1293421C
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Canada
Prior art keywords
polyacrylate
polyethylene glycol
mixture
alkyl
nonionic surfactant
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.)
Expired - Fee Related
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CA000513226A
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French (fr)
Inventor
Mark Edward Cushman
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Procter and Gamble Co
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Procter and Gamble Co
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Priority to US753,207 priority
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Application granted granted Critical
Publication of CA1293421C publication Critical patent/CA1293421C/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

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Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D11/00Special methods for preparing compositions containing mixtures of detergents ; Methods for using cleaning compositions
    • C11D11/02Preparation in the form of powder by spray drying
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/83Mixtures of non-ionic with anionic compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3746Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3757(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
    • C11D3/3761(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in solid compositions
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/146Sulfuric acid esters
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29Sulfates of polyoxyalkylene ethers
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/72Ethers of polyoxyalkylene glycols

Abstract

SPRAY-DRIED GRANULAR DETERGENT COMPOSITIONS
CONTAINING NONIONIC SURFACTANT, POLYETHYLENE
GLYCOL, AND POLYACRYLATE
Abstract of the Disclosure Detergent compositions comprising a mixture of a nonionic surfactant, a polyethylene glycol and polyacrylate of specified molecular weight for improved physical properties and cold water dispersion are disclosed.

Description

SPRAY-DRIED CRANULAR DFTERCENT COMPOSITIONS
CONTAINING NONIONIC SURFACTANT, POLYETHYLENE
GLYCOL, AND POLYACR'fLATE
Mark Edward Cushman Technical Field The present invention relates to spray-dried, granular detergent compositions.
Summary of the invention -The present invention encompasses a spray-dried granular detergent composition comprising:
(a) from about 5g6 to about 50% by weight of a nonsoap anionic detergent surfactant; and (b) from about 1~ to about 10% of a mixture of nonionic surfactant, comprising an ethoxylated alcohol or alkyl phenol, polyethylene glycol and a polyacrylate, said nonionie surfactant comprlsing from about 1096 to about 8096 of the m5xture, said polyethylene glycol having a weight average molecular welght of from about 1,000 to about 20,000, and said polyacrylate having a weight average molecular weight of from about 1,00~ to about 20,000 said mixture having a polyethylene glycol:polyacrylate weight ratio of from about 1:10 to about 10:1, and wherein such mixture is added in the crutcher.
Detailed Description of the Invention The detergent compositions of the present invention contain a nonsoap anionic detergant surfactant, and a mixture of a nonionic sur~actant, a polyethylene glycol of selected molecular weight and a polyacrylate polymer of selected molecular weight.
The nonionic surfactantlpolyethylene glycollpolyacrylate mixtures 30 herein provide a surprising boost to dispersion rates and improvement in physical properties.
The compositions of the present invention are prepared by `~ spray drying and have superior physical characteristics.
Anionic Surfactant _ The detergent compositions herein contain from about 5% to about Sû%, preferably from about 10% to about 30% of a nonsoap anionic surfastant, or mixtures thereof. Surfactants useful herein are listed in U . S . Patent 3, 664, 961, Norris, issued May ~34~

23, 1972, and in U.5. Patent 3,919,678, Laughiin et al, issued December 30, 1975.
Useful anionic surfactants include the water-soluble salts, preferably the alkali metal salts, of organic sulfuric reaction products having in their rnolecuJar structure an alkyi group containing from about 9 to about 20 carbon atoms as~d a sulfonic acid or sulfuric acid ester group. (Included in the term "alkyl"
is the alkyl portion of acyl groups. ) Examples of this group of synthetic surfactants are the sodium and potassium alkyl sulfates, lo especially those obtained by sulfating the higher alcohols (C8-C18 carbon atoms) such as those produced by reducing the glycerides of tallow or coconut oii; and the sodium and potassium alkyl-benzene sulfonates in which the alkyl group contains from about 9 to about 15 carbon atoms, in straight chain or branched chaln configuratlon , e.g., those of the type descrlbed In U. S. Patents 2,220,099 and 2,477,383. Especially valuable are linear straight chain alkylbenzene sulfonates in which the average number of carbon atons in the alkyl group is Erom about 11 to 2a 13, abbrevi~ted as C11_13L~S
Other anionic surfactants suitable for use herein are the sodium alkyl glyceryl ether sulfonates, especially those ethers of higher alcohols derived from tallow and coconut oil; sodium coco-Z5 nut oil fatty acid monoglyceride sulfonates and sulfates; sodium orpotassium salts of alkyl phenol ethylene oxide ether sulfates containing frorn about 1 to about 10 units of ethylene oxide per molecule and from about 8 to about 12 carbon atoms in the alkyl group and sodium or potassium salts of alkyl ethylene oxide ether sulfates containing from about 1 to about 10 units of ethylene oxide per molecule and ~rom about 10 to about 20 carbon atoms in the alkyl group.
Other useful anionic surfactants include the water-soluble salts of esters of alpha-sulfonated fatty acids containing from 35 about 6 to 20 carbon atoms in the fatty acid group and from about 1 to 10 carbon atoms in the ester group; water-soluble salts , ~3~

of 2-acyloxy-aikane~1-sulfonic acids containing from about 2 to 9 carbon atoms in the acyl group and from about 9 to about 23 carbon atoms in the alkane moiety; alkyl ether sulfates containing from about 10 to 20 carbon atoms in the alkyl group and from about 1 to 30 moles of ethylene oxide; water-soluble salts of olefin or paraffin sulfonates containing from about 12 to 18 carbon atoms; and beta-alkyloxy alkane sulfonates containing from about 1 to about 3 carbon atoms in the alkyloxy group and from about 8 ~; to about 20 carbon atoms in the alkane moiety.
Particularly preferred surfactants for use herein include sodium Cl~ 13LAS~ C14 18 alkyl sulfateS, Cl4_18 y polyethoxy sulfates containing from about 1 to abouL 4 moles of ethylene oxide, and mixtures thereof.
Nonionic Surfactant/Polyethy!ene Glycot/Polyacrylate Mixture The composltions of the present invention contain from about 1% to about 10%, preferably from about 196 to about 5%, more preferably from about 2% to about 4~, of a mixture of a polyethoxylate nonionic surfactant, a polyethylene glycol and a polyacrylate .
Suitable nonionic surfactants include the polyethylene oxide condensates of alkyl phenols~ e. g ., the condensation products of alkyl phenols having an alkyl group containing from about 6 to about 15, preferably from about 9 to about 13, carbon atoms, in either a straight chain or branched chain configuration, with from about 3 to about 12, preferably from about 4 to about 8, moles of ethylene oxide per mole of alkyl phenol.
Preferred nonionics are the water-soluble condensation products of aliphatic alcohols containing from about 8 to about 20, preferably from about ~10 to about 18, carbon atoms, in either straight chain or branched configuration, with from about 3 to about 12, preferably from about 4 to about 8, moles of ethylene oxide per mole of alcohol. Particularly preferred are the condensation products of alcohols having an alkyl group containing from about 10 to about 16 carbon atoms with from about 4 to about 8 moles of ethylene oxide per mole of alcohol.

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The nonionic surfactant comprises by weight from about 10%
to about 80% preferably from about 2596 to about 7~96 more preferably from about 35% to about 60~ of the mixture.
The polyethylene glycol has a weight average molecular weight of from about 1 000 to about 20 000 preferabty from about 2 000 to about 12 000 more preferably from about 4 000 to about 10 000. The polyacrylate has a weigllt average molecular weight of from about 1 000 to about 20 000 preferabiy from about 2 000 to about 10 000 more preferably from about 3 000 to about 8 000.
The polyethylene glycol and the poiyacrylate are present in a weight ratio of from about 1:10 to about 10:1 preferably from about 1:3 to about 3:1 more preferably from about 2:1 to about 1 : ~ .
While polyethylene glycols are preferred other suitable polymeric materials are the condensatiQn products of C10 20 alcohols or C8 18 alkyl phenols with sufficient ethylene oxide i . e . more than 50~ by weight of the polymer so that the resultant product has a melting point above about 35C.
Preferred polymers contain at least about 70% ethylene oxide by weight and more preferred polymers contain at least about 8û~
ethylene oxide by weight. Preferred polymeric materials have H LB values of at least about 15 and more preferably at least about 17. Block and heteric polymers based on ethylene oxide and propylene oxide addition to a low molecular wei~ht organic compound containing one or more active hydrogen atoms are suitabte in the practice of the invention. Polymers based on the addition of ethylene oxide and propylene oxide to propylene glycol ethylenediamine and trimethylolpropane are commercially available under the names Pluronics Pluronic R Tetronics and Pluradots from the BASF Wyandotte Corporation of ~IYyandotte Michigan. Corresponding nonproprietary names of the first three trade names are poloxamer meroxapol and poloxamine respec-tively .

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Optimum solubility of the polyacrylate is obtained when it is in the form of an at least partially neutralized allcaii metal salts.
The sodium salts are most preferred.
Suitable polyacrylates herein are the partially or fully neutralized salts of polymers of acrylic acid. One can also use copolymers formed with small amounts of other copolymerizable monomers. The percentage by weight of the polyacrylate units which is derived from acrylic acid is preferably greater than about 8~. Suitable copolymerizable monomers include, for ex-ample, methacrylic acid, hydroxyacrylic acid, vinyl chloride, vinyl alcohol, furan, acrylonitrile, methacrylonitrile, vinyl acetate, methyl acrylate, methyl methacrylate, styrene, alpha-methylstyrene, vinyl methyl ether, vinyl ethyl ether, vinyl propyl ether, acrylamide, ethylene, propylene and 3~butenoic acid.
Mixtures of these polymers can also be used. The polyacrylate may also be added In the acid form and neutrallzed by various bases present.
Preferred copolymers of the above group contain at least about 90% by weight of units derived from the acrylic acid.
Preferably essentially all of the polymer is derived from acrylic acid. Particularly preferred is sodium polyacrylate, especially when it has an average molecular weight of from about 3,000 to about 8,000.
It is essential that this mixture be added in the crutcher rather than post dosed for the benefits of the invention to be seen. ~
Optional Ingredients The compositions of the invention can additionally contain up to 10%, preferably about 5~ of an organic surfactant selected from the group consisting of zwitterionic, ampholytic, and cationic surfactants and mixtures thereof. The compositions can aiso contain other conventional ingredients, such as nonphosphorous builders, either organic or inorganic in nature.
Optional ampholytic surfactants include derivatives of ali-phatic, or aliphatic derivatives of heterocyclic, secondary and :' .

~ ~3~2~

tertiary amines in which the aliphatic moiety can be straight chain or branched and wherein one of the aliphatic substituents contains from about 8 to about 1 B carbon atoms and at least one aliphatic substituent contains an anionic watler-solubilizing group.
Useful cationic surfactants include those described in U. S .
Patent 4 222 905 Cockrell issued September 16 1980 and in U.S. Patent 4 239 659 Murphy issued December 16 1980 Optional ~witterionic surfactants include derivatives of ali-phatic quaternary ammonium or phosphonium or ternary sulfonium compounds in which one of the aliphatic substituents contains from about 8 to about 18 carbon atoms.
Also useful in the compositions of the invention are alkyl-polysaccharide surfactants. The preferred alkylpolyglycosides ha~te the formula RO(CnH2nO)t(glycosyl)x wherein R Is selected from the group consistlng of alkyl atkylphenyl hydroxyalkyl hydroxyalkylphenyl and mixtures thereof in which said alkyl groups contain from about 10 to about 18 preferably from about 12 to about 14 carbon atoms n is 2 or 3 preferably 2 t is from 0 to about 10 preferably 0 and x is from about 1-114 to about 10 preferably from about 1-1/3 to about 3 most preferably from about 1-1/3 to about 2. The glycosyl is preferably derived from glucose.
Detergency builders are preferred optional ingredients when included the level of detergency builder is from 0% to about 60~
prefer~bly from about 10% to about 60% more preferably from about 2096 to about 609~ of the composition.
Preferred detergency builders include the various water-soluble alkali metal ammonium or substitutecl ammonium phosphates polyphosphates phosphonates polyphosphonates carbonates sil7cates and borates.
Especially preferred for use in compositions of the invention are the inorganic phosphate builders.
Specific examples of inorganic phosphate buiiders are sodium and potassium tripolyphosphate pyrophosphate polymeric . ~
,~

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metaphosphate having a degree of polymerization of from about 6 to 21, and orthophosphate. Examples of polyphosphonate builders are the sodium and potassium salts of ethylene-1, 1-diphosphonic acid, the sodium and potassium salts of ethane l-hydroxy-l, 1-diphosphonic acid and the sodium and potassium salts of ethane, l ,1, 2-triphosphonic acid. Other phosphorus builder compounds are disclosed in U.S. Pat. Nos. 3,159,581, 3,~13,030; 3,422,021 3,422,137; 3,400,176 and 3~4OOI148D Sc~ium tripclyp~osphate and pyrophosphate are particularly preferred.
The detergent compositions of the invention can also optionally contain water-insoluble aluminosilicate ion exchange material of the formula Naz[ ~AlOj!)z~ tslo2)yl xH2o whereln z and y are at least about 6, the molar ratio of z to y Is from about 1.0 to about 0.5 and x is from about 10 to about 264.
Amorphous hydrated aluminosilicate materials useful herein have the empirical formula M (zAlO2 Y5iO2) wherein M Is sodium, potassium, ammonium or substituted ammon-ium, z is from about 0 . 5 to about 2 and y is 1, said material having a magnesium ion exchange capacity of at least about 50 milligram equivalents of CaCO3 hardness per gram of anhydrous aluminosilicate .
The aluminosilicate ion exchange builder materials herein are in hy~rated form and contain from about 10% to about 28~ of water by weight if crystalline, and potentially even higher amounts of water if amorphous. Highly preferred crystalline aluminosilicate ion exchange materials contain from about t8~6 to about 22~ water in their crystal matrix. The crystalline alumino-silicate ion exchange materials are further characterized by a particle size diameter of from about 0.1 micron to about 10 microns. Amorphous materials are often smaller, e.g., down to Iess than about 0. 01 micron . Preferred ion exchange materials have a particle size diameter of from about 0.2 micron to about 4 ~.~

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microns. Th0 term particle size diameter herein represents the average particle size diameter of a given ion exchange materiat a determined by conventional analytical techniques such as, for example, microscopic determination utilizing a scanning electron 5 microscope. The crystalline aluminosilicate ion exchange materials herein are usually further characterized by their calcium ion exchange capacity, which is at least about 200 mg. equivatent of CaCO3 water hardness/g. of aluminosilicate, calculated on an anhydrous basis, and which generally is in the range of from about 300 mg . eq . /9. to about 352 mg. eq . Ig. The atuminosili-cate ion exchange materials herein are still further characterized by their calcium ion exchange rate which is at least about 2 grains Ca++lgallonlminutelgramlgallon of alumlnosilicate (anhy-drous basis), and generally lles within the range of from about 2 grainslgallonlminutelgramlgallon to about 6 grains/gallonlminutel-gramlgallon, based on calcium lon hardness. Optimum alumino-silicate for builder purposes exhibit a calcium ion exchange rate of at least about 4 grains/gallon/minute/gram/gallon.
The amorphous aluminosilicate ion exchange materials usually have a Mg~+ exchange capacity of at least about 50 mg. eq.
CaCO21g. (12 mg. Mg+~lg.l and a Mg+~ exchange rate of at ieast about 1 grainlgallon/minutelgramlgallon. Amorphous materials do not exhibit an observable diffraction pattern when examined by Cu radiation ~1.54 Angstrom Units).
Aluminosilicate ion exchange materials useful in the practice of thi invention are commercially available. The aluminosilicates useful in this invention can be crystalline or amorphous in structure and can be naturally-occurring aluminosilicates or synthetically derived. A method for producing aluminosilicate ion exchange materials is discussed in U.S. Patent 3,985,669, : Krummel, et al, issued Cctober 12, 1976. Preferred synthetic ; . crystalline aluminosilicate ion exchange materials useful herein are available under the designations Zeolite Ar Zeolite B, and ~ Zeolite X~ In an especially :~

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g preferred embodiment, the crystalline aiuminosilicate ion exchange material has the formula Nal2~Alo2)l2(sio2)12l XH2 wherein x is from about 20 to about 30, espe~cially about 27.
Water-soluble, nonphosphorus organic builders useful herein include the various alkali metal, ammonium and substituted ammon-ium, carboxylates, nonpolymeric polycarboxylates and ~` polyhydroxysulfonates. Examples of nonpolymeric polycarboxylatebuilders are the sodium, potassium, lithium, ammonium and substituted ammonium salts of ethylenediaminetetraacetic acid, nitrilotriacetic acid, oxydisuccinic acid, mellitic acid, benzene polycarboxylic acids, and citric acid. The compositions of this invention only contain the limlted amount of polyacrylate defined herelnafter .
Other useful bullders herein are sodium and potassium carboxymethyloxymalonate, carboxymethyloxysuccinate, cis-cyclo-hexanehexacarboxylate, cls-cyclopentanetetracarboxylate, and phloroglucinol trisulfonate.
Other suitable nonpolymeric polycarboxylates are the poly-acetal carboxylates described in U . S . Patent 4 ,144, 226, issued March 13, 1979 to Crutchfield, et al, and U.S. Patent 4,246,495, issued ~Sarch 27, 1979 to Crutchf ield, et al . These polyacetyl carboxylates can be prepared by bringing together under polymerization conditions an ester of glyo~ylic acid and a polymerization initiator. The resulting polyacetal carboxylate ester is then attached to chemically stable end groups to stabilize the polyacetyl carboxylate against rapid depolymeri-zation in alkaline solution, and converted to the corresponding.
The compositions herein preferably contain from about 0% to about 10%, preferably from about 0 . 5% to about 8%, and most preferably from about 1% to about 796, by weight of an alkali metal silicate having a molar ratio of SiO2 to alkali metal oxide of from about 1,0 to about 3,2, preferably from about 1.4 to about 2.4.

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Sodium silicate, particularly one having a moiar ratio of about 1.6 to about 2.2 is preferred.
The alkali metal silicates can be purchased in either liquid or granular form. Silicate slurries can conveniently be used to 5 avoid having to dissolve the dried form in the crutcher mix of the components herein.
Other ingredients commonly used in detergent compositions can be included in the compositions of the present invention.
These include color speckles, bleaching agents such as perborates lo and percarbonates and bleach activators, suds boosters or suds suppressors, antitarnish and anticorrosion agents, soil suspending agents, soil release agents, dyes, fillers, optical brighteners, germicides, pH adjusting agents, nonbuilder alkalinity sources, hydrotropes such as toluene sulfonates and xylene sulfonates, 15 enzymes, enzyme-stabilizing agents, perfumes and water.
The detergent compositions of the present invention can comprise a portion of compositions containing a wide variety of materials suitable for detergent or other uses.
The following nonlimiting examples illustrate the detergent 20 compositions of the present invention.
Ail percentages, parts, and ratios used herein are by weight ` unless otherwise specified.
CONIPARATIVE EXAMPLE I
.
A base product was prepared by spray drying according to 25 the following formula.
Na C13 linear alkyl sul-fonate (EAS) 10.3 Na C14_15 alkyl sulfate (AS) 10.3 Na tripolyphosphate 43.3 Na silicate solids (1.6r) 6.9 Na sulfate 17 . 0 Na carbonate (dry mixed)15.5 Die$hylenetriamine pentacetate 0 . 7 Minor ingredients and water balance , . .

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EXAMPLE l l The base product was produced according to Example I with varying ratios of polyethylene glycol (PEG) with a weight average moiecular weight of 8 000 and sodium polyacrylate with weight 5 average molecular weight of 4 500 and nonionic surfactant (C12 13E6 5 topped) as shown below added in the crutcher mix.
Seventy-two grams (72 9.) of product were sewn into black fabric pockets and agitated on delicate agitation at 60F (15.5C) in a Kenmore~washer. Pockets were removed and cut at 3 minutes 5 10 minutes 7 minutes and l O minutes and graded on a 1-7 scale where l is poorly dispersed with most of the product remaining caked in the pocket and 7 is completely dispersed. Grades reported are averages of two replicate tests.
Solubility grade at hlinutes %
lSOO ~AW
~ Poly- C23E6 . 5T
Product PEG acrylate Nonionic 3 5 7 10 _ A 0 0 0 1 2 6.5 7 20 B 0 1. 03 0 1 6 7 4 C0.69 1.03 0 1 6 7 7 D0.69 1.03 1.37 7 7 7 7 As can be seen the products containing all three ingre-dients (PEG polyacrylate and nonionic surfactant) of the inven-25 tion have the most improved cold water dispersion.

Claims (13)

1. A spray-dried granular detergent composition comprising:
(a) from about 5% to about 50% of a non-soap anionic surfactant or mixtures thereof; and (b) from about 1% to about 10% of a mixture of nonionic surfactant, polyethylene glycol and a polyacrylate, said mixture being added in a crutcher, said nonionic surfactant comprising a polyethylene condensation product of an aliphatic alcohol containing from about 10 to about 20 carbon atoms or an alkyl phenol, wherein the alkyl group contains from about 6 to about 15 carbon atoms, condensed with from about 3 to about 12 moles of ethylene oxide per mole of alcohol or alkyl phenol, said polyethylene glycol having a weight average molecular weight of from about 1000 to about 20,000, and said polyacrylate having a weight average molecular weight of from about 1,000 to about 20,000; the ratio of polyethylene glycol to polyacrylate being from about 10:1 to 1:10, and said nonionic surfactant comprising from about 10% to about 80% of the mixture.
2. The composition of Claim 1 wherein the mixture of nonionic surfactant, polyethylene glycol and polyacrylate comprises from about 1% to about 5% of the composition.
3. The composition of Claim 2 wherein the nonionic surfactant comprises from about 25% to about 70% of the mixture and the ratio of polyethylene glycol to polyacrylate is from about 3:1 to about 1:3.
4. The composition of Claim 3 wherein the polyethylene glycol has a weight average molecular weight of from about 2000 to about 12,000, and the polyacrylate has a weight average molecular weight of from about 2,300 to about 10,000.
5. A composition according to Claim 3 wherein the polyacrylate is sodium polyacrylate.
6. The composition of Claim 3 further comprising:
(c) from about 10 to about 60% of a detergency builder; and (d) from about 1% to about 10% of an alkali metal silicate having a ratio of from about 1.6 to about 2.4.
7. A spray-dried granular detergent composition comprising:
(a) from about 10% to about 30% of non-soap anionic surfactant selected from the group consisting of alkali metal salts of C11-13 alkylbenzene sulfonates, C14-18 alkyl sulfates, C14-18 alkyl polyethoxysulfates containing from about 1 to about 4 moles of ethylene oxide and mixtures thereof;
(b) from about 1% to about 5% of said mixture of nonionic surfactant, polyethylene glycol, and polyacrylate wherein said nonionic surfactant is an ethylene oxide condensate of an aliphatic alcohol containing from about 10 to about 18 carbon atoms or alkyl phenol, wherein the alkyl group contains from about 9 to about 13 carbon atoms, condensed with an average of from about 4 to about 8 moles of ethylene oxide per mole of alcohol or alkyl phenol, said polyethylene glycol having a weight average molecular weight of from about 2,000 to about 12,000, said polyacrylate being sodium polyacrylate having a weight average molecular weight of from about 3,000 to about 8,000, the nonionic surfactant comprising from about 35% to about 60% of the mixture, the weight ratio of polyethylene glycol to polyacrylate being from about 1:3 to 3:1, and wherein said mixture is added in a crutcher; and (c) from about 10% to about 60% of inorganic phosphate detergency builder selected from the group consisting of alkali metal phosphonates and polyphosphates.
8. The composition of Claim 7 further comprising:
(c) at least about 20% of the detergency builder; and (d) from about 0.5% to about 8% of an alkali metal silicate having a ratio of from about 1.4 to about 2.4.
9. A spray-dried granular detergent composition comprising:
(a) from about 10% to about 30% of non-soap anionic surfactant comprising a mixture of alkali metal salts of C11-13 alkyl benzene sulfonates, and C14-18 alkyl sulfates wherein the ratio of the alkyl sulfonate to the alkyl sulfate is from about 3:1 to about 1:3, (b) from about 1% to about 5% of a mixture of:
(1) nonionic surfactant comprising an ethylene oxide condensate of an aliphatic alcohol, wherein the alkyl group contains from about 10 to about 18 carbon atoms, and is condensed with from about 4 to about 8 moles of ethylene oxide per mole of alcohol;
(2) a polyethylene glycol with a weight average molecular weight of from about 4,000 to about
10,000; and (3) a sodium polyacrylate with a weight average molecular weight of from about 3,000 to about 8,000, wherein the nonionic comprises from about 35% to about 60% of the mixture, the ratio by weight of polyethylene glycol to sodium poly-acrylate is from about 1:3 to about 3:1 and wherein said mixture is added in the crutcher;
and (c) from about 20% to about 60% of an alkali metal tripolyphosphate, pyrophosphate or mixtures thereof as detergency builder.
10. A composition according to Claim 9 also comprising from about 0.5 to about 8% of sodium silicate solids having a molar ratio of SiO2:Na2O of from about 1.6 to about 2.2.
11. A composition according to Claim 9 wherein the mixture of anionic surfactants has about a 1:1 ratio on a weight basis.
12. A process for spray drying a granular detergent composition according to Claim 1 wherein the components are mixed in the crutcher along with enough additional water so that the water content of the crutcher paste is from about 25% to about 50% and then spray dried with an inlet air temperature of from about 400°F (204°C) to about 800°F (427°C).
13. The process of Claim 12 wherein the water content of the crutcher paste is from about 28% to about 40% and the inlet air temperature in the spray tower is from about 500°F (260°C) to about 700°F (371°C).
DPM:sp/pw(A73/A21)
CA000513226A 1985-07-09 1986-07-07 Spray-dried granular detergent compositions containing nonionicsurfactant, polyethylene glycol, and polyacrylate Expired - Fee Related CA1293421C (en)

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US75320785A true 1985-07-09 1985-07-09
US753,207 1985-07-09

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EP (1) EP0208534A3 (en)
CA (1) CA1293421C (en)
GR (1) GR861773B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4124701A1 (en) * 1991-07-25 1993-01-28 Henkel Kgaa A process for producing solid detergents and cleaning agents schuettgewicht high and improved loesegeschwindigkeit
DE4203031A1 (en) * 1992-02-04 1993-08-05 Henkel Kgaa A process for producing solid detergents and cleaning agents schuettgewicht high and improved loesegeschwindigkeit
DE4303211C2 (en) * 1993-02-04 1996-05-15 Henkel Kgaa Anionic surfactants with improved solubility
DE4303176C2 (en) * 1993-02-04 1997-07-31 Henkel Kgaa Fixed washing, rinsing and cleaning agents
US5610131A (en) * 1993-04-30 1997-03-11 The Procter & Gamble Company Structuring liquid nonionic surfactants prior to granulation process
EP0622454A1 (en) * 1993-04-30 1994-11-02 THE PROCTER & GAMBLE COMPANY Structuring liquid nonionic surfactants prior to granulation process
DE4403323A1 (en) * 1993-09-23 1995-08-10 Henkel Kgaa Extruded detergents or cleaners with improved release properties
DE4415369C1 (en) * 1994-05-02 1995-08-31 Henkel Kgaa Heterogeneous surfactant granulate useful in washing powder and detergent
US5759978A (en) * 1995-12-06 1998-06-02 Basf Corporation Non-phosphate machine dishwashing compositions containing polycarboxylate polymers and polyalkylene oxide homopolymers

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
US4000080A (en) * 1974-10-11 1976-12-28 The Procter & Gamble Company Low phosphate content detergent composition
EP0108429A1 (en) * 1982-09-07 1984-05-16 THE PROCTER & GAMBLE COMPANY Granular detergents containing pyrophosphate and polyacrylate polymer
US4490271A (en) * 1983-06-30 1984-12-25 The Procter & Gamble Company Detergent compositions containing polyethylene glycol and polyacrylate
EP0179533A3 (en) * 1984-10-26 1987-06-16 THE PROCTER & GAMBLE COMPANY Spray dried granular detergent compositions and process for their manufacture

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EP0208534A3 (en) 1989-07-05
GR861773B (en) 1986-11-04
EP0208534A2 (en) 1987-01-14

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