Process for preparing a block copolymer from polyimides and use of the block copolymer for producing powders and mouldings

US7812099B2 · kind B2 · utility

Assignee

• EVONIK FIBRES GMBH · AT

Inventors

• Harald Rögl · Wels, AT
• Markus Ungerank · Ansfelden, AT

Key dates

• Filing date: Jul 13, 2006
• Grant date: Oct 12, 2010
• Expiry date: Nov 17, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G73/1042
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention describes a process for preparing pulverulent polyimide-polyimide block copolymers. The result polyimide-polyimide block copolymers and compounds produced using them can be compressed into moldings by the direct forming method or by the hot compression molding method. Polymeric moldings can be produced therefrom by customary mechanical and thermal machining and forming methods.