Moulding compounds of polycarbonate mixtures having a high disperse solubility

US4980426A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Klaus Berg · Krefeld, DE
• Guther Weymans · Leverkusen, DE
• Ulrich Grigo · New Martinsville, US
• Ludwig Bottenbruch · Krefeld, DE

Key dates

• Filing date: Oct 10, 1989
• Grant date: Dec 25, 1990
• Expiry date: Oct 10, 2009

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B7/2534
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to halogen-free binary mixtures of two fully aromatic polycarbonates each having a disperse solubility of from 18 to 35 (J/ccm).sup.1/2, in which both polycarbonates are of high molecular weight and each contains not more than 70 mol-% of bisphenol A. The invention further relates to the use of these mixtures for optical data stores and to moulded parts produced from the mixtures.