Patent · US Expired

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

US4929689A · kind A · utility

9Cited by

3References

7Claims

0Family size

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	Sep 27, 1988
Grant date	May 29, 1990
Priority date	—
Expiry date	Sep 27, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2810/40
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.