Process for the preparation of crosslinked spherical polymers

US6221287A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Podszun · Neunburg vorm Wald, DE
• Olaf Halle
• Werner Struver · Leverkusen, DE
• Robert Bloodworth · Neunburg vorm Wald, DE
• Holger Lutjens · Cologne, DE

Key dates

• Filing date: Jun 4, 1999
• Grant date: Apr 24, 2001
• Expiry date: Jun 4, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2989
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to suspension polymers having high swellability have low contents of soluble fractions prepared using aliphatic peroxyesters as polymerization initiators.