Detergent compositions
AssigneeLever Brothers Company
InventorsRobert J. Edwards, Paul D. Hardman, Melvin Scott, Carey J. Walsh, Peter Winterbotham
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Abstract
Stable, high-concentration (60-80% active matter) aqueous liquid detergent compositions based on dialkyl sulphosuccinates and alkyl ether sulphates contain a lower alcohol, preferably ethanol, and water, the ratio of lower alcohol to water exceeding a critical ratio which varies with the total active detergent content. The compositions may be thickened by means of hydroxypropyl guars, polyethylene oxides, or hydrophilically substituted cellulosic polymers such as hydroxyethyl cellulose.
Claims23
A homogeneous foaming isotropic liquid detergent composition consisting essentially of
- (a) from 60 to 80% by weight of an active detergent system consisting essentially of
- (i) from 20 to 65% by weight of a water-soluble monovalent salt of a C.sub.3 -C.sub.12 dialkyl ester of sulphosuccinic acid in which the alkyl groups may be the same or different,
- (ii) from 12 to 55% by weight of a monovalent salt of a C.sub.10 -C.sub.18 alkyl ether sulphate, the ratio of (i) to (ii) being from 4:1 to 0.5:1, and
- (iii) optionally a nonionic detergent, in an amount not exceeding 15% by weight of the whole composition,
- (b) from 5 to 20% by weight of a C.sub.2 -C.sub.3 mono- or polyhydric alcohol,
- (c) from 0 to 12% by weight of urea, and
- (d) water and minor ingredients to 100%,
- the ratio of alcohol (b) to water being less than 1.10 and exceeding a critical value r which is selected for the given active detergent system as the value of said ratio below which separation in two phases occurs, said value r being at least 0.45 and being dependent on the total active detergent concentration.
Dependencies are inferred from the claim text.