Film of an aromatic polyetherketone suitable for further thermoplastic processing

US5221728A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Cynthia Bennett · Wiesbaden, DE
• Werner Roth · Lenningen, DE

Key dates

• Filing date: Apr 15, 1991
• Grant date: Jun 22, 1993
• Expiry date: Apr 15, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2371/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention describes a film of a thermoplastic, wholly aromatic polyetherketone. The film is amorphous and comprises the polymer PEEKK which is formed of the following repeat unit: EQU --[--Ph--O--Ph--O--Ph--CO--Ph--CO--]-- wherein Ph denotes a para-phenylene group.