Patent · US Expired

Mixed emulsifier for emulsion polymerization

US4529762A · kind A · utility

8Cited by

4References

9Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Rainer Hoefer · Goldkronach, DE
Karl Schmid · Mettmann, DE
Bernd Wegemund · Haan, DE
Bernhard Bartnick · Monheim, DE

Key dates

Filing date	Oct 18, 1984
Grant date	Jul 16, 1985
Priority date	—
Expiry date	Oct 18, 2004

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2/26
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Compositions and processes for the aqueous emulsion polymerization of ethylenically unsaturated monomers using mixed emulsifiers containing PA0 (a) about 99.5 to about 10 parts by weight of an .alpha.-sulfocarboxylic acid alkyl ester containing from 8 to 24 carbon atoms in the carboxylic acid portion and from 1 to 4 carbon atoms in the alcohol portion, and PA0 (b) from about 0.5 to about 90 parts by weight of an .alpha.-sulfocarboxylic acid containing from 8 to 24 carbon atoms, and if desired, other anionic and/or non-anionic emulsifiers and/or protective colloids; the mixed emulsifier optionally being completely or partly present in salt form.

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