Block copolycarbonates with polyisobutylene-.alpha.-haloketocarboxylic acid blocks

US5717027A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Richard Weider · Leverkusen, DE
• Burkhard Kohler · Leverkusen, DE
• Wolfgang Ebert · Krefeld, DE
• Thomas Scholl · New Haven, US
• Klaus Horn · Dortmund, DE

Key dates

• Filing date: Jun 14, 1996
• Grant date: Feb 10, 1998
• Expiry date: Jun 14, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G64/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to block copolycarbonates made from polycarbonate blocks and polyisobutylene-.alpha.-haloketocarboxylic acid blocks (abbreviation: PIB blocks), wherein the PIB blocks may, for example, be obtained by ozonolysis of halogenated butyl rubber, and to blends of these block copolycarbonates with elastomers.