Use of mixtures of polycarbonates and styrene polymers as substrates for optical storage media

US4902746A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Volker Serini · Krefeld, DE
• Klaus Berg · Krefeld, DE
• Ulrich Grigo · New Martinsville, US
• Leo Morbitzer
• Karl-Erwin Piejko · Bensberg, DE
• Klaus Summermann · Cologne, DE

Key dates

• Filing date: Dec 13, 1988
• Grant date: Feb 20, 1990
• Expiry date: Dec 13, 2008

Classification

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

Abstract

The invention relates to the use of mixtures consisting of 5 to 95% by weight of an aromatic polycarbonate of which the linear chains contain from 0.1 mol-% to 50 mol-% bifunctional structural units corresponding to formula (1) ##STR1## and 95 to 5% by weight of a thermoplastic styrene polymer and, optionally, standard additives as substrates for optical storage media.