Patent · US Expired

Thermoplastic mixtures of aromatic polycarbonates and polystyrenes and their use as substrates for optical data memories

US4777215A · kind A · utility

6Cited by

1References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Wolfgang Wehnert · Krefeld, DE
Ulrich Grigo · New Martinsville, US
Helmut Schmid · Freudenstadt, DE
Joachim Wagner · Ludwigshafen, DE

Key dates

Filing date	Oct 13, 1987
Grant date	Oct 11, 1988
Priority date	—
Expiry date	Oct 13, 2007

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L69/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to thermoplastic mixtures of 90 to 20% by weight of an aromatic polycarbonate with an Mw of 15,000 to 25,000 and p-(iso-C.sub.8 -C.sub.9 -alkyl)-phenyl end groups and 10 to 80% by weight of a polystyrene with an Mw of 80,000 to 400,000, and to their use as substrates for optical data memories.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.