Polycarbonates having a good wettability

US7589165B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Alexander Meyer · Mülheim an der Ruhr, DE
• Wilfried Haese · Rheydt, DE
• Stephan Konrad · Dormagen, DE
• Claus-Ludolf Schultz · Krefeld, DE

Key dates

• Filing date: Dec 20, 2005
• Grant date: Sep 15, 2009
• Expiry date: Mar 23, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31507
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polycarbonate resin containing small amounts of carbamate compounds is disclosed. The resin that contains at least one of compounds conforming towhereinR1 and R2 independently of one another denote hydrogen or C1-C12-alkyl, or together denote C4-C12-alkylidene, R3 and R4 independently of one another represent hydrogen, C1-C12-alkyl, or phenyl, or together with the carbon atom to which they are bonded form cyclohexyl or trimethylcyclohexyl, and R5 denotes hydrogen, C1-C12-alkyl, C5-C12-cycloalkyl, phenyl or cumyl, are characterized by their low electrostatic field and therefore suitable for making optical storage media.