Process for the production of butadiene-propylene copolymers

US4189558A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Josef Witte · Cologne, DE
• Gerd Sylvester · Leverkusen, DE
• Gunter Marwede · Cologne, DE

Key dates

• Filing date: May 18, 1978
• Grant date: Feb 19, 1980
• Expiry date: May 18, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F236/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the production of strictly alternating copolymers of trans-1,4-butadiene and propylene units by the solution copolymerization of butadiene and propylene with vanadium-containing organometallic mixed catalysts, wherein vanadyl dialkoxy halides of which the alkoxy groups are branched in the 2-position to the oxygen atom are used as the vanadium compounds.