Thermoplastic polyester carbonate-polysiloxane block copolymers

US5126495A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Volker Serini · Krefeld, DE
• Dietrich Rathmann · Leverkusen, DE
• Leo Morbitzer
• Dieter Freitag · Krefeld, DE
• Ulrich Grigo · New Martinsville, US

Key dates

• Filing date: Jun 26, 1991
• Grant date: Jun 30, 1992
• Expiry date: Jun 26, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/445
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The new polyester carbonate-polysiloxane block copolymers having recurrent structural units of the following formulae ##STR1## have improved resistance to petrol compared with known polyester carbonate-polysiloxane block copolymers. They are used for the manufacture of moulded products, in particular those used under the engine bonnet of a motor vehicle or as external parts of motor vehicles.