Patent · US Active

Process for purifying crude fatty alcohols

US9045715B2 · kind B2 · utility

1Cited by

4References

15Claims

0Family size

Assignee

Cognis IP Management GmbH · DE

Inventors

Horst Josten · Goldkronach, DE
Pepa Dimitrova · Worms, DE
Truc Tran Anh · Mülheim an der Ruhr, DE

Key dates

Filing date	May 12, 2012
Grant date	Jun 2, 2015
Priority date	—
Expiry date	Feb 22, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11C1/025
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Described is a process for simultaneously purifying fatty alcohols and obtaining a fraction of free fatty acids, wherein: (a) crude fatty alcohols comprising up to 70% b.w. alkyl esters and/or wax esters are treated with alkaline bases in an amount sufficient to essentially convert said esters into alkaline soaps, (b) said alkaline soaps are separated from said fatty alcohols by extraction to produce a purified fraction of fatty alcohols and an aqueous soap phase, and (c) said soap phase is treated with strong mineral acids in order to release the fatty acids from the soaps.

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