American Cyanamid Company

Samuel Eugene Susman

Kevin R Hirschbuehler

Curable compositions comprising epoxide prepolymers and polyaminobenzoates, alone, or combined with reinforcements, e.g., graphite fibers, and, optionally modified with second resins. The cured resin fiber matrix compositions exhibit high toughness combined with excellent hot/wet strength.

Curable epoxy resin compositions

The invention has now been made that polychlorinated 1,3- and 1,4-benzene diamines produce cured epoxy resins with better moisture resistance, and higher glass transition temperatures on exposure to high humidity, than known aromatic diamine curing agents. The resulting cured epoxy resins are useful in fibrous composites, structural adhesives and coatings, where high heat distortion and good moisture resistance is desired.

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Norwalk, CT, United States of America

Samuel Eugene Susman