Patent · US Expired

Fatty acid polyoxyalkyl ester sulfonates, a process for their production and their use as surfactants

US4936551A · kind A · utility

15Cited by

3References

10Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Ansgar Behler · Bottrop, DE
Robert Piorr · Ratingen, DE
Michael Schaefer · Heidenau, DE

Key dates

Filing date	Jun 15, 1988
Grant date	Jun 26, 1990
Priority date	—
Expiry date	Jun 15, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K23/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Fatty acid polyoxyalkyl ester sulfonates obtained by reaction of C.sub.11 -C.sub.22 monounsaturated monocarboxylic acid polyoxyalkyl esters corresponding to the following general formula EQU C.sub.m H.sub.2m-1 --CO--(O--C.sub.n H.sub.2n).sub.x --OR (I) in which PA1 R is a C.sub.1 -C.sub.22 alkyl radical or a C.sub.3 -C.sub.22 alkenyl radical, PA1 m has a value of 10, 15, 17, 19 or 21, PA1 n has a value of 2 or 3 and PA1 x has a value of 1 to 20, with sulfur trioxide and subsequent reaction of the sulfonated fatty acid polyoxyalkyl ester obtained with aqueous alkali metal salts. The sulfonates have high surface activity and favorable performance properties as surfactants.

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