Block copolymer based on conjugated diolefins and polar monomers

US6734257B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Heike Windisch · Leverkusen, DE
• Werner Obrecht · Moers, DE
• Cristina Stere · Leverkusen, DE
• Thomas Scholl · New Haven, US
• Oskar Nuyken · Munich, DE
• Lars Friebe · Hersbruck, DE
• Mario Vierle · Günzburg, DE

Key dates

• Filing date: Mar 21, 2002
• Grant date: May 11, 2004
• Expiry date: Apr 14, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F297/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The block copolymers according to the invention which are based on conjugated diolefins and polar monomers and are prepared in the presence of catalysts based on the rare earth metals have a high cis-1,4 content in the polydiene block and, because of their polar polymer part and their non-polar diene polymer part, can be used as agents which impart compatibility in the preparation of vulcanizates with a filler content for the production of tires and tire component in the preparation of thermoplastic elastomers or in the modification of thermoplastics.