Process for the production of suspension polymerizates

US4677173A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Hans-Joachim Holle · Rodenbach, DE
• Gerhard Morlock · Hanau, DE

Key dates

• Filing date: Jan 27, 1986
• Grant date: Jun 30, 1987
• Expiry date: Jan 27, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/909
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The suspension polymerization of acrylic acid esters, methacrylic acid esters and vinyl aromatics alone or in admixture with subordinate amounts of other monomers is carried out in the presence of an acrylic or methacrylic acid homo or polymerizate or its alkali metal or ammonium salts as dispersing agent with the addition of an acid ester of phosphoric acid with an alkanol having 1 to 8 carbon atoms. The size of polymerizate beads produced is influenced by this procedure.