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US 5,387,658 AGranted
Crosslinked castor oil derivatives
AssigneeHuels Aktiengesellschaft
InventorsWolfgang Schroder, Klaus Jenni
Life of this patent
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Abstract
The invention relates to crosslinked castor oil derivatives which, as thickeners in liquid oils, give colorless and ageing-resistant oleogels and viscous oils even at low temperatures. The crosslinking species may be at least one of a di- or polycarboxylic acid, a olioisocyanate, and a oligoepoxide.
Claims3
A composition suitable for thickening or gelling an oleaginous substance prepared by reacting a mixture comprising:
- (A) a linking agent containing at least two epoxide groups;
- (B) a member of the group consisting of castor oil, esters of ricinoleic acid or 12-hydroxystearic acid with a di- or polyol, and hydrogenated derivatives thereof;
- wherein the molar ratio of (A) to (B) is 0.1:1 to 1.2:1;
- and isolating a reaction product of (A) and (B) that is substantially free of epoxide groups.
1 more element
Dependencies are inferred from the claim text.