Metal (II) 4,4',4",4'"-phthalocyanine tetraamines as curing agents for epoxy resins
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorsBappalige N. Achar, George M. Fohlen, John A. Parker
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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.
Claims12
A homogeneous cured polymer of metal 4,4',4",4'"-phthalocyanine tetraamine and one or more epoxy compounds.
A method of preparing a heat resistant homogeneous cured polymer which comprises curing an epoxide with a metal 4,4',4",4'"-phthalocyanine tetraamine, said metal 4,4',4",4'"-phthalocyanine tetraamine being a pure material having been produced by the process of reducing metal 4,4',4",4'"-tetranitro phthalocyanine.
Dependencies are inferred from the claim text.