Copolymers of alk-1-enes and .alpha., .omega.-dienes having a high viscosity index

US5929185A · kind A · utility

Assignee

• BASF SE

Inventors

• Joachim Rosch · Ludwigshafen, DE
• Helmut Mach · Heidelberg, DE
• Freddy Gruber · Offenbach, DE

Key dates

• Filing date: May 30, 1997
• Grant date: Jul 27, 1999
• Expiry date: May 30, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2030/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Copolymers have a viscosity index VI of more than 160 and comprise PA1 A) from 99.0 to 99.99 % by weight of C.sub.2 -C.sub.20 -alk-1-enes and PA1 B) from 0.01 to 1.0% by weight of C.sub.5 -C.sub.20 -.alpha.,.omega.-dienes having isolated double bonds.