Curing agents for epoxy resins

Details Curing agents for epoxy resins Curing agents for epoxy resins

C - Chemistry, Metallurgy

08

K

402/270

C08K 5/34 (2006.01) C08G 59/50 (2006.01) C08L 63/00 (2006.01)

Patent

CA 1172000

CURING AGENTS FOR EPOXY RESINS ABSTRACT OF THE DISCLOSURE Novel unitary, storable, heat-curable epoxy resin systems are prepared which contain a polyepoxide and a curing amount of a salt of piperazine and a C3-C21 polycarboxylic acid. In a preferred aspect the salt is present in a stoichiometric amount. The resin system is cured into an insoluble, infusible resin product by heating thereof at a temperature greater than 50°C, preferably 50-250°C, for a time suf- ficient to complete the cure.

370939

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