Polyolefinecarboxylic acids, their preparation and their use for preparing polyolefine-polycarbonate block copolymers

US4798873A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Kurt P. Meurer · Leverkusen, DE
• Helmut Waniczek · Cologne, DE
• Gerd Sylvester · Leverkusen, DE
• Josef Witte · Cologne, DE

Key dates

• Filing date: May 14, 1987
• Grant date: Jan 17, 1989
• Expiry date: May 14, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/40
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carboxylic acids of Mw (weight average) 2000 to 350,000, to their preparation by oxidative degradation of polyolefines or by reaction of "Living" polyolefines with CO.sub.2, to their conversion into poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carbonyl halides and to their use for preparing polyolefine/polycarbonate block copolymers and the block copolymers obtainable by the process according to the invention.