Patent · US Expired

Salts of esters of long-chain fatty alcohols with alpha-sulfofatty acids as corrosion inhibitors in oils or oil emulsions

US4735735A · kind A · utility

32Cited by

5References

20Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Gerhard Borggrefe · Düsseldorf, DE
Robert Piorr · Ratingen, DE
Alfred Struve · Hilden, DE

Key dates

Filing date	May 22, 1987
Grant date	Apr 5, 1988
Priority date	—
Expiry date	May 22, 2007

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2050/01
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method for corrosion inhibition in oil or oil emulsions comprising adding thereto a corrosion-inhibition-effective amount of at least one salt corresponding to the general formula ##STR1## in which R.sup.1 is a linear or branched C.sub.8-36 alkyl or C.sub.8-36 alkenyl or a mono- or polyethoxylated C.sub.8-18 alkyl containing from 1 to 10 ethoxy groups, PA0 R.sup.2 is a linear or branched C.sub.10-20 alkyl and PA0 M is half an equivalent of a divalent metal which is magnesium, calcium, barium, or zinc.

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