"Metal (II) 4,4',4"",4'""-phthalocyanine tetraamines as curing agents for epoxy resins"

US4537834A · kind A · utility

Assignee

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

Inventors

• Bappalige N. Achar · Mumbai, IN
• George M. Fohlen · Millbrae, US
• John A. Parker · Los Altos, US

Key dates

• Filing date: Apr 11, 1984
• Grant date: Aug 27, 1985
• Expiry date: Apr 11, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/3585
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Metal, preferably divalent copper, cobalt or nickel, phthalocyanine tetraamines are used as curing agents for epoxides. The resulting copolymers have high thermal and chemical resistance and are homogeneous. They are useful as binders for laminates, e.g. graphite cloth laminate.