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US 5,009,814 AGranted
Use of n-polyhydroxyalkyl fatty acid amides as thickening agents for liquid aqueous surfactant systems
AssigneeHuls Aktiengesellschaft
InventorsHeike Kelkenberg, Wulf Ruback, Klaus Engel
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Abstract
N-polyhydroxyalkyl fatty acid amides are used as thickening agents for liquid aqueous surfactant systems. Compounds of formula ##STR1## where R.sub.1 is an alkyl group; R.sub.2 is hydrogen, an alkyl group, or an alkylene oxide group; and X is a polyhydroxyalkyl group, are used as thickeners. The thickeners are particularly useful in liquid surfactant systems which contain paraffinsulfonate.
Claims9
A method of shampooing which comprises:
- (1) applying a mixture comprising at least one anionic or nonionic surfactant, water and 0.5-30 wt.% of an N-polyhydroxylalkyl fatty acid amide of formula ##STR5## wherein R.sub.1 is a branched or straight chain C.sub.1-17 alkyl group;
- R.sub.2 is hydrogen or a branched or straight chain C.sub.1-18 alkyl group or a group ##STR6## wherein n is 0 to 5, R.sub.3 is hydrogen or methyl;
- and X is a C.sub.4-7 polyhydroxyalkyl group.
Dependencies are inferred from the claim text.