Polyimide preparation from imido acyl halide
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United States of America Patent
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Dec 16, 1980
Grant Date -
N/A
app pub date -
Jul 8, 1976
filing date -
Jul 9, 1975
priority date (Note) -
Expired
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Abstract
Novel polyimide prepolymers are produced by reacting an unsaturated dicarboxylic acid imido acylchloride with a difunctional amine to produce the corresponding acid amide. Condensation of said reactants is preferably effected in solution in a low boiling solvent. The resulting prepolymer is hardened and completely polymerized by heating, preferably between about 80.degree. C. and about 400.degree. C., to yield a cross-linked, substantially infusible and insoluble polyimide resin and articles made therefrom.
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