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US 4,069,204 AGranted
Polychlorinated benzene diamines as curing agents for epoxy resins
AssigneeAmerican Cyanamid Company
InventorSamuel Eugene Susman
Life of this patent
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Abstract
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.
Claims8
A curable epoxide composition comprising:
- (a) an epoxide resin containing on average more than one 1,2 epoxide groups per molecule, (b) a curing agent for the epoxide resin of the formula:
- ##STR2## wherein one R is an amino group and the other is chlorine;
- X is chlorine and n is an integer of from 1 to 3, said curing agent being present in an amount between about 1 to 100 parts by weight per 100 parts by weight of said epoxide resin.
Dependencies are inferred from the claim text.