Patent · US Expired

Mixtures of polydiorganosiloxane-polycarbonate block co-condensates and polyisobutylenes

US4912165A · kind A · utility

4Cited by

6References

14Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Paul Winfried · Pittsburgh, US
Ulrich Grigo · New Martinsville, US
Werner Nouvertne · Krefeld, DE
Peter Muller · Leverkusen, DE

Key dates

Filing date	Jul 18, 1988
Grant date	Mar 27, 1990
Priority date	—
Expiry date	Jul 18, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L83/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to mixtures of polycarbonates and polyisobutylenes, polydiorganosiloxane-polycarbonate block cocondensates being employed as the polycarbonates and polyisobutylene homopolymers or polyisobutylene-isoprene copolymers as the polyisobutylenes. If appropriate, the moulding compositions can also contain ethylene homo- or copolymers.

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