Mixtures of aromatic polycarbonates and aromatic polyester-carbonates, and their use for the production of mouldings, films, fibres, filaments and coatings

US4746711A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Volker Serini · Krefeld, DE
• Dieter Freitag · Krefeld, DE
• Dietrich Rathmann · Leverkusen, DE

Key dates

• Filing date: Oct 14, 1986
• Grant date: May 24, 1988
• Expiry date: Oct 14, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L69/005
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Mixtures of aromatic polycarbonates and aromatic polyester-carbonates having a specific polycarbonate/polyester-carbonate ratio and a defined ester content in the polyester-carbonates, at least one of the polycondensates containing C.sub.8 -C.sub.9 -alkylated phenyl end groups, possess a reduced tendency to stress cracking.