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US 6,150,312 AGranted
Liquid composition with enhanced low temperature stability comprising sodium tricedeth sulfate
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsSudhakar Puvvada, Shuman Mitra
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Abstract
The invention relates to liquid cleansing compositions in lamellar phase. Use of specific anionic surfactant has been found to enhance both initial viscosity and freeze thaw (low temperature) viscosity/stability.
Claims11
A liquid lamellar cleansing composition comprising:
- (a) 5% to 50% by wt. of a surfactant system comprising:
- (i) one or more anionic surfactants where the one anionic or one of the at least two anionics is a sodium tricedeth sulfate;
- (ii) 0.1 to 25% by wt. total composition of an additional surfactant selected from the group consisting of amphoteric, zwitterionic or mixtures thereof;
- and
- (b) 1 % to 15% by wt. fatty acid or ester thereof;
- wherein composition has initial viscosity of 20,000 to 300,000 cps. measured at 0.5 RPM using T-bar spindle A;
- and freeze-thaw viscosity defined either by having viscosity greater than about 30,000 cps also measured at 0.5 RPM using T-bar spindle A;
- or by having a percent drop of viscosity relative to initial viscosity of no more than about 40%.
5 more elements
Dependencies are inferred from the claim text.