Method for preparation of a liquid polymer composition and use of this composition

US6348554B1 · kind B1 · utility

Assignee

• RohMax Additives GmbH · DE

Inventors

• Sebastian Roos · Mainz, DE
• Boris Eisenberg · Heppenheim, DE
• Michael Mueller · Bensheim, DE

Key dates

• Filing date: Nov 30, 1999
• Grant date: Feb 19, 2002
• Expiry date: Nov 30, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10M2217/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention concerns a method for preparation of a liquid polymer composition, where ethylenically unsaturated monomers are polymerized by means of initiators that have a transferable atomic group, and one or more catalysts that contain at least one transition metal, in the presence of ligands that can form a coordination compound with the metallic catalysts, the catalyst is oxidized after the polymerization and then the catalyst is separated by filtration, where the composition contains a solvent with a dielectric constant less than or equal to 4.