Branched copolymers

US5266647A · kind A · utility

Assignee

• BASF SE

Inventors

• Dietmar Bender · Schifferstadt, DE
• Klaus Bronstert · Eisenberg (Pfalz), DE
• Hans-Michael Walter · Freinsheim, DE
• Daniel Wagner · Bad Dürkheim, DE
• Helmut Mach · Heidelberg, DE

Key dates

• Filing date: Oct 12, 1990
• Grant date: Nov 30, 1993
• Expiry date: Oct 12, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08C19/44
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A copolymer with stellate branching, of the general formula [A-].sub.k X, where A is the monovalent radical of a homopolymer, block copolymer or random copolymer of a conjugated diene and/or vinyl-aromatic hydrocarbon, k is a number from 1 to 10, and X is the k-valent radical of a coupling center produced by coupling with hexatriene, and the product of the hydrogenation thereof are described.