Patent · US Expired

Method for obtaining fatty acids from biomass by combined in/situ extraction, reaction and chromatography using compressed gases

US6350890B1 · kind B1 · utility

42Cited by

1References

9Claims

0Family size

Assignee

Axiva GmbH · DE

Inventors

Thomas Kiy · Frankfurt, DE
Christoph Siffrin · Quierschied, DE
Heinz Engelhardt · Riegelsberg, DE
Dirk Fabritius · Mainz, DE

Key dates

Filing date	Feb 16, 2001
Grant date	Feb 26, 2002
Priority date	—
Expiry date	Feb 16, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11C3/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a method for obtaining fatty acid esters and fatty acids, preferably unsaturated fatty acid ethyl esters, from biological sources by continuous, combined in-situ extraction, reaction and chromatography. The invention is characterized in that simultaneously and in the same location, in the presence of a compressed gas and an 0.5-5 % stream of lower alcohols as modifiers and in the presence of an inert catalyst, the fatty acids are fully transesterified from their native fatty acid sources, which are selectively desorbed and eluated in the conditions specified above.

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