Patent · US Expired

Polycarbonate mixtures which can be processed as thermoplastics

US4186154A · kind A · utility

10Cited by

6References

11Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Rudolf Binsack · Krefeld, DE
Eckart Reese · Dormagen, DE
Erhard Tresper · Krefeld, DE
Joachim Wank · Dormagen, DE

Key dates

Filing date	Jun 19, 1978
Grant date	Jan 29, 1980
Priority date	—
Expiry date	Jun 19, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31507
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to mixtures comprising about 60% by weight to 5% by weight of aromatic polycarbonates which have a Mw between about 60,000 and 120,000 (component A) and about 40% by weight to 95% by weight of aromatic polycarbonates which have a Mw between about 28,000 and 40,000 (component B), as well as to processes for their preparation and their use for the production of shaped articles. The melt which can be prepared from the mixtures according to the invention has a high stability and the films obtainable therefrom have a high resistance towards stress cracking.

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