Patent GB-1517855-A (GB)
Title: Granular or powdery detergent composition
IPC: C11D1/74
Filed: 1976-09-20
Abstract: 1517855 Detergent composition KAO SOAP CO Ltd 20 Sept 1976 [30 Sept 1975] 38875/76 Heading C5D A granular or powdery detergent composition comprises I. from 2 to 40 percent by weight of a first surfactant having a tendency to cake selected from (a) alkylethoxy sulfates having the formula wherein R 1  and R 2 , which can be the same or different, are hydrogens, alkyls having one to 17 carbon atoms, or alkenyls having two to 17 carbon atoms, provided that the average carbon atom number of is from 10 to 18 carbon atoms, n is a number of from 0À5 to 5, and M is an alkali metal or an alkaline earth metal, (b) alkylphenylethoxy sulfates having the formula wherein R 3  is alkyl having 4 to 16 carbon atoms or alkenyl having 4 to 16 carbon atoms, provided that the average carbon atom number of is from 10 to 18, and n and M are the same as defined above, (c) branched alkyl sulfates having the formula wherein R 4  and R 5 , which can be the same or different, are alkyls having one to 15 carbon atoms or alkenyls having two to 15 carbon atoms, provided that the average carbon atom number of is from 10 to 18 and M is the same as defined above, (d) alkane sulfonates having the formula wherein R 6  and R 7  which can be the same or different, are hydrogens or alkyls having one to 17 carbon atoms, provided that the average carbon atom number of  is from 10 to 18, and M is the same as defined above,  (e) sulfonate salts of vinylidene olefins having the formula wherein R 8  and R 9 , which can be the same or different, are alkyls having one to 15 carbon atoms, provided that the average carbon number of the olefin molecule is from 10 to 18, and the saltforming cation is an alkali metal or alkaline earth metal, (f) sulfonate salts of internal olefins having the formula  wherein R 10  and R 11 , which can be the same or different, are hydrogens or alkyls having one to 17 carbon atoms, provided that the average carbon number of the olefin molecule is from 10 to 20 and further provided that in up to 80 weight per cent of the olefin molecules, one of R 10  and R 11  can be hydrogen, and in the balance of the olefin molecules, neither of R 10  and R 11  is hydrogen, and the salt-forming cation is an alkali metal or alkaline earth metal. (g) ethylene oxide nonionic surface active agents having an HLB value of from 8 to 18 and selected from polyoxyethylene (6 to 12), alkyl (12 to 18) or alkenyl (12 to 18) ethers, polyoxyethylene(6 to 12), alkyl (6 to 10) phenyl ethers, polyoxyethylene (8 to 20), saturated or unsaturated fatty acid (12 to 18) esters and polyoxyethylene (4 to 20) sorbitan saturated or unsaturated fatty acid (12 to 18) esters, (the number in brackets being the average carbon numbers) and mixtures thereof, II. from 0À2 to 20 weight percent of an anticaking agent, being a carboxylic acid or an alkali metal salt thereof, obtained by reacting at 50 to 100‹C without any catalyst. (A) a polyalkylene glycol selected from (i) polyethylene glycol having an average molecular weight of from 2000 to 10,000 and (ii) a nonionic surfactant having the formula wherein 140 # a + c # 200 and 30 # b # 40, with (B) an acid anhydride selected from maleic anhydride, phthalic anhydride and succinic anhydride, at a molar ratio of A/B of from ¢ to <SP>1</SP>/ 1 , wherein the weight ratio of II/I is from <SP>1</SP>/ 10  to <SP>3</SP>/ 2 , III. from zero to 20 percent by weight of second surfactant selected from alkylbenzene sulfonates in which the alkyl has 10 to 16 carbon atoms, linear alkyl sulfates having an average of 11 to 18 carbon atoms, α-olefin sulfonates having 10 to 20 carbon atoms and mixtures thereof, and IV. from 10 to 40 weight percent water-soluble inorganic alkaline detergent builders, or watersoluble inorganic neutral detergent builders, or water-soluble organic detergent builders, or mixtures thereof.