Patent GB-1418720-A (GB)
Title: Laundry detergent
IPC: C11D10/04
Filed: 1973-11-09
Abstract: 1418720 Fabric laundering composition PROCTER & GAMBLE CO 9 Nov 1973 [10 Nov 1972] 52048/73 Heading C5D [Also in Division D1] A fabric laundering composition, comprises: (A) from 74À5% to 95À5% by weight of granular detergent particles which comprise: (i) from 30% to 80% by weight of a soap compound, and (ii) from 1% to 30% by weight of a curd-dispersing agent; (B) from 4% to 25% by weight of a textile softening agent which is an impalpable smectite-type clay having an ion exchange capacity of at least 50 meq./100 grams, attached to the surface of the granular particles, the said composition having a weight ratio of granular particles to impalpable smectite-type clay of from 20 : 1 to 3 : 1; and (C) from 0À5% to 15% by weight of a substantially waterinsoluble quaternary ammonium anti-static   agent of the formula [R 2 #NR<SP>1</SP> 2 ] n X<SP>n-</SP> wherein each R is a hydrocarbyl group containing from 10 to 22 carbon atoms and each R<SP>1</SP> is a hydrocarbyl group containing from 1 to 4 carbon atoms, X is an anion and n is an integer from 1 to 3, the weight ratio of smectite-type clay to quaternary ammonium compound being in the range of from 40 : 1 to 1 : 1, said quaternary ammonium compound being in releasable combination (as herein defined) in the said composition. The curd-dispersing agent consists of (i) compounds of the formula wherein R 1  is alkyl or alkenyl having 10 to 20 carbon atoms, R 2  is alkyl or 1 to 10 carbon atoms and M is a salt-forming cation: (ii) compounds of the formula wherein R 1  is alkyl having 9 to 23 carbon atoms, R 2  is alkyl or 1 to 8 carbon atoms and M is a salt-forming cation; (iii) compounds of the formula wherein R is alkyl or alkenyl having 10 to 20 carbon atoms, x is 1 to 30 and M is a saltforming cation; (iv) olefin sulphonates containing from 12 to 24 carbon atoms; (v) compounds of the formula wherein R 1  is alkyl, alkenyl or monohydroxyalkyl having 8 to 18 carbon atoms and optionally substituted by up to 10 ethylene oxide moieties and/or 1 glyceryl moiety, and R 2  and R 3  are each alkyl or monohydroxyalkyl groups containing from 1 to 3 carbon atoms; (vi) compounds of the formula wherein R is an alkyl group having from 8 to 16 carbon atoms and X is methyl, ethyl or #- hydroxyethyl; (vii) compounds of the formula wherein R 1  is alkyl having 8 to 18 carbon atoms, R 2  is alkyl having 1 to 3 carbon atoms or hydrogen, R 3  is alkylene having 1 to 4 carbon atoms, Z is a carboxy, sulphonate, sulphate, phosphate or phosphonate group and M is a salt-forming cation. (viii) compounds of the formula wherein R 1  is an alkyl, alkenyl, hydroxyalkyl or alkylbenzene group, all groups containing from 8 to 24 carbon atoms and having from 0 to about 10 ethylene oxide moieties and from 0 to 1 glyceryl moiety; Y is a nitrogen, phosphorus, or sulphur atom; R 2  is an alkyl or monohydroxy alkyl group containing 1 to 3 carbon atoms; x is 1 when Y is a sulphur atom and 2 when Y is a nitrogen or phosphorus atom, R 3  is alkylene or hydroxyalkylene having from 1 to 4 carbon atoms and Z is a carboxylate, sulphonate, sulphate, phosphonate, or phosphate group; (ix) compounds of the formula wherein R is hydrogen, alkyl or alkylol and R<SP>1</SP> and R<SP>11</SP> are each hydrogen, alkyl, alkylol, or alkylene joined through an oxygen atom, and total number of carbon atoms in R, R<SP>1</SP> and R<SP>11</SP> being from 9 to 25; and (x) N-alkyl monoalkylolamine or N-alkyl dialkylolamine wherein the alkyl group contains from 10 to 16 carbon atoms and the alkylol group contains 2 or 3 carbon atoms; or N-alkyl morpholines wherein the alkyl groups contain from 10 to 16 carbon atoms or N-alkyl tris(hydroxymethyl)-aminomethane wherein the alkyl group contains from 10 to 16 carbon atoms; and the said curd-dispersing agent is (preferably present in the said granular particles to the extent of from 2% to 20% by weight). By "releasable combination" is meant that, on admixture with water, the soluble components of the composition granules dissolve and the clay and quaternary compounds are independently suspended in the aqueous medium. The detergent particles (A) may contain anionic and non-ionic surfactants, organic and inorganic builders, and detergent additives such as soil suspending agents. The clay (B) is preferably bound to the granules (A) by an adhesive such as a non-ionic ethylene oxide condensate surfactant.