Patent · US Active

Process for preparing vinyl acetate-ethylene copolymers by emulsion polymerization

US10519255B2 · kind B2 · utility

0Cited by

5References

11Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Muhammad Babar · Burghausen, DE
Bernhard Eckl · Burghausen, DE
Wolf-Dieter Hergeth · Julbach, DE
Hans-Peter Weitzel · Reischach, DE

Key dates

Filing date	Jun 29, 2016
Grant date	Dec 31, 2019
Priority date	—
Expiry date	Sep 27, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2800/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Subjects of the invention are processes for preparing vinyl acetate-ethylene copolymers in the form of their aqueous dispersions or water-redispersible powders by means of radically initiated emulsion polymerization and optional subsequent drying of the resultant polymer dispersions, characterized in that the emulsion polymerization of vinyl acetate, ethylene and optionally one or more further ethylenically unsaturated monomers is carried out in the presence of one or more protective colloids in one or more Taylor reactors.

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