Process for the preparation of polymer dispersions and their application

US4528315A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Herbert Eck · Burghausen, DE
• Manfred Hannebaum · Burghausen, DE
• Christof Kemenater · Burghausen, DE

Key dates

• Filing date: Jul 30, 1983
• Grant date: Jul 9, 1985
• Expiry date: Jul 30, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F14/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of aqueous dispersions, also emulsion (co)polymerization of vinyl halides and/or vinyl esters and, if needed, additional monomers in the absence of emulsifying agents are described. Protective colloid is added after the initiation of the polymerization to stabilize the forming dispersion. The dispersions are characterized by low viscosity, even with high solids contents, and low structural viscosity, and they are suitable a.o. especially for the preparation of redispersible powders.