Patent · US Active

Amides of aliphatic polyamines and 12-hydroxyoctadecanoic acid and lipase stable thickener compositions

US11680228B2 · kind B2 · utility

0Cited by

18References

20Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Hans-Jurgen Kohle · Leingarten, DE
Michael Klostermann · Essen, DE
Gonglu Tian · Greensboro, US

Key dates

Filing date	Feb 16, 2017
Grant date	Jun 20, 2023
Priority date	—
Expiry date	May 29, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D3/2044
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Amides of an aliphatic polyamine with two or three molecules of 12-hydroxyoctadecanoic acid, wherein the polyamine comprises at least one primary amino group for each molecule of 12-hydroxyoctadecanoic acid and additionally at least one secondary and/or tertiary amino group, can be used in a lipase stable thickener composition comprising from 50 to 95% by weight of one or more of the amides, from 5 to 50% by weight of one or more diluents and from 0 to 10% by weight water, and such thickener compositions can be prepared by a step of heating a starting mixture comprising hydrogenated castor oil and one or more aliphatic polyamines and adding one or more diluents before or after the heating step.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.