| 摘要 |
A single-phase liquid detergent composition comprises (a) 6-14% by weight of one or more alkali-metal alkyl glyceryl ether sulphonates in which the alkyl radical is at least 50% derived from alcohols of 10-14 carbon atoms, (b) 12% to the solubility limit of potassium pyro- or tripoly-phosphate or both, (c) 3.5-6% of sodium silicate solids with a SiO2:Na2O ratio of 1.6-2.6, (d) 2-6% of ethanol, isopropanol or diethylene glycol monobutyl ether, or mixtures thereof, (e) 3-8% of an anionic solubilizer, and (f) 40-73.5% of water. If desired, (e) may be omitted so that a twophase composition results in which case the amount of water (f) will be 40-76.5%. Component (a) is preferably a sodium or potassium salt in which the alkyl groups are derived from coconut or oxo alcohols; the sulphonate mixture usually includes a proportion of diglyceryl radicals. Component (e), if of straight chain configuration, is a phosphate containing 1-3 straight hydrocarbon chains, each having up to 5 carbon atoms; if of cyclic configuration, (e) is a sulphonate in which the hydrocarbon portion of the molecule contains either a benzene ring or an alkyl-substituted benzene group of up to 8 carbon atoms. Suitable solubilizers are triamyl phosphate and sodium benzene or xylene sulphonates, but sodium toluene sulphonate is preferred. Amorphous silica, bentonite-type clays, tarnish inhibitors, colouring material, perfume, and inorganic salts may also be incorporated. Specification 848,225 and U.S.A. Specification 2,618,607 are referred to. |
