Thermotropic aromatic polyesters having high mechanical properties and good processability, a process for their preparation, and their use for the production of mouldings, filaments, fibres and films

US4667011A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Volker Eckhardt · Walsrode, DE
• Hans-Rudolf Dicke · Bestwig, DE
• Klaus-Christian Paetz · Burscheid, DE
• Aziz El Sayed · Leverkusen, DE

Key dates

• Filing date: May 7, 1986
• Grant date: May 19, 1987
• Expiry date: May 7, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/605
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Fully aromatic polyesters which contain 3-phenyl-4,4'-dihydroxybenzophenone radicals and/or 3-phenyl-3',4-dihydroxybenzophenone radicals as condensed units possess high mechanical properties but can still be processed without difficulties by a thermolastic method.