Copolymers of vinyl styrlpyridines or vinyl stilbazoles with bismaleimide

US4526925A · kind A · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• John A. Parker · Los Altos, US
• Alvin H. Heimbuch · Corona, US
• Ming-Ta Hsu · San Jose, US
• Timothy S. Chen · San Jose, US

Key dates

• Filing date: Nov 18, 1983
• Grant date: Jul 2, 1985
• Expiry date: Nov 18, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F222/406
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Vinyl pyridines including vinyl stilbazole materials and vinyl styrylpyridine oligomer materials are disclosed. These vinylpyridines form copolymers with bismaleimides which copolymers have good fire retardancy and decreased brittleness. The cure temperatures of the copolymers are substantially below the cure temperatures of the bismaleimides alone. Reinforced composites made from the cured copolymers are disclosed as well.