Process for the preparation of supported polymerization catalyst systems and use thereof in the homo-and co-polymerization of unsaturated monomers

US6255245A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Rafael Winkelbach · Cologne, DE
• Peter Schertl · Leverkusen, DE
• Wolfgang Nentwig · Bensberg, DE

Key dates

• Filing date: Jun 10, 1999
• Grant date: Jul 3, 2001
• Expiry date: Jun 10, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the preparation of supported polymerization catalyst systems comprising the steps of: PA1 a) dissolving at least one different transition metal complex in a mixture of at least two different solvents having different boiling points to form a solution, PA1 b) contacting said solution with at least one different support material, the volume of the solution being sufficient to form a slurry with the support material, the volume of the higher-boiling solvent being less than or equal to the total pore volume of the support, PA1 c) removing more than 90% of the solvent boiling at the lower temperature, and PA1 d) adding at least one co-catalyst.