Thermotropic, aromatic polyester carbonates, process for the production thereof and mouldings, filaments, fibers and films thereof

US4579934A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hermann Brinkmeyer · Krefeld, DE
• Manfred Schmidt · Krefeld, DE
• Hermann Perrey · Krefeld, DE
• Aziz E. Sayed · Leverkusen, DE

Key dates

• Filing date: Jul 3, 1984
• Grant date: Apr 1, 1986
• Expiry date: Jul 3, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/64
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Thermotropic, wholly-aromatic polyester carbonates which contain condensed radicals of 4,4'-dihydroxydiphenyl have a reduced viscosity in the melt, without the mechanical properties of the product suffering therefrom.