Chemically modified imidazole curing catalysts for epoxy...

Details Chemically modified imidazole curing catalysts for epoxy... Chemically modified imidazole curing catalysts for epoxy...

C - Chemistry, Metallurgy

07

D

402/254, 402/270

C07D 233/64 (2006.01) C07D 521/00 (2006.01) C08G 59/18 (2006.01) C08G 59/40 (2006.01) C08G 59/42 (2006.01) C08G 59/50 (2006.01) C08G 59/56 (2006.01)

Patent

CA 1151182

Abstract: A curing agent for epoxy resins comprises an imidazole having the formula: Image wherein X is hydrogen, methyl, ethyl, or phenyl and Y and Z are hydrogen or methyl, modified by addition of C1-C18 alkyl (meth)acrylate or a 1,2-monoepoxide or by carbamoylation; followed by neutralization with a lower fatty acid, a lower alkylene dicarboxylic acid, or an aromatic mono- or poly-carboxylic acid. Alternatively, the imidazole is modified by addition of a diglycidyl ether of a bisphenol and neutralization is effected with a lower fatty acid or an aromatic monocarboxylic acid. The curing agent can be combined with an epoxy resin to produce a powder coating.

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