Process for the production of polycarbonate-polyisobutylene block cocondensates

US5747589A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

• Filing date: Mar 12, 1997
• Grant date: May 5, 1998
• Expiry date: Mar 12, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L69/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides a process for the production of polycarbonate-polyisobutylene block cocondensates from thermoplastic aromatic polycarbonates and reactive polyisobutylenes in the melt, as well as mixtures of the block cocondensates with non-reactive polyisobutylenes.