Patent · US Expired

Fatty oil ex helianthus annuus for the production of diperazelaic acid

US5278327A · kind A · utility

2Cited by

6References

14Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Horst Eierdanz · Hilden, DE
Paul Schulz · Wuppertal, DE
Beatrix Kottwitz · Erkrath, DE

Key dates

Filing date	May 6, 1988
Grant date	Jan 11, 1994
Priority date	—
Expiry date	May 6, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C407/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The use of a fatty oil ex Helianthus annuus containing 78 to 92% by weight oleic acid and 2 to 10% by weight linoleic acid for the production of diperazelaic acid, with elimination of enrichment steps with respect to the oleic acid content, by fat splitting, distillation, oxidative ozonolysis of the fatty acid mixture obtained, and reaction of the azelaic acid thus obtained with hydrogen peroxide to form diperazelaic acid. The resulting diperazelaic acid has improved stability in storage and is obtained in high yields and in highly pure form.

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