Patent · US Expired

Process for the production of emulsion polymers

US5891944A · kind A · utility

1Cited by

6References

19Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Dieter Feustel · Monheim, DE
Ulrich Eicken · Korschenbroich, DE
Thomas Engels · Goldkronach, DE

Key dates

Filing date	Aug 19, 1996
Grant date	Apr 6, 1999
Priority date	—
Expiry date	Aug 19, 2016

Classification

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

Abstract

A secondary stabilizer for emulsion polymers is disclosed. The secondary stabilizer is a polyester containing diol residues, residues of olefinically unsaturated dicarboxylic acids which carry sulfonate groups and residues of dicarboxylic acids which do not contain olefinic unsaturation or sulfonate groups. The residues of the olefinically unsaturated dicarboxylic acids comprise from 70 mole-% to 99 mole-% of dicarboxylic acid residues in the polyester and from 1 mole-% to 30 mole-% of residues of dicarboxylic acids which do not contain olefinic unsaturation or sulfonate groups. The polyester secondary stabilizer is not a surfactant (does not significantly lower the surface tension of water) and in addition is biodegradable.

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