Patent · US Expired

Process for the preparation of light-colored oleic acid sulfonates

US5294726A · kind A · utility

67Cited by

0References

19Claims

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Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Ansgar Behler · Bottrop, DE
Hermann Anzinger · Goldkronach, DE
Michael Vogt · Gilching, DE

Key dates

Filing date	Feb 10, 1992
Grant date	Mar 15, 1994
Priority date	—
Expiry date	Feb 10, 2012

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C303/32
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the preparation of light-colored oleic acid sulfonates by continuous sulfonation of an industrial oleic acid having an oleic acid content of 65 to 85% by weight and a linoleic acid content of up to 13% by weight with gaseous sulfur trioxide in a molar ratio of industrial oleic acid to sulfur trioxide of 1 : 0.8 to 1 : 1.0, neutralization and hydrolysis of the acid sulfonation product with aqueous bases and bleaching of the neutralized and hydrolyzed sulfonation product give oleic acid sulfonates having Klett color numbers of not more than 100.

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