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US 4,358,571 AGranted
Chemically modified imidazole curing catalysts for epoxy resin and powder coatings containing them
AssigneeMobil Oil Corporation
InventorsMarvin L. Kaufman, George F. Salathe
Life of this patent
Estimating the term…
Abstract
Imidazole or substituted imidazole is adducted with acrylate ester, an epoxy, or an isocyanate followed by neutralization with lower fatty acid or alkylene or aromatic dicarboxylic acid. The product is a curing agent which is combined with an epoxy resin to form a powder coating.
Claims15
Curing agent for epoxy resins that comprise an imidazole having the formula:
- ##STR5## wherein X is hydrogen, methyl, ethyl, or phenyl and Y and Z are hydrogen or methyl, modified by addition of C.sub.1 -C.sub.18 alkyl (meth) acrylate, by addition of a diglycidyl ether of a bisphenol, or a 1,2-monoepoxide or by carbamoylation;
- followed by neutralization with a lower fatty acid, or an aromatic mono-carboxylic acid.
Curing agent for epoxy resins that consists essentially of an imidazole having the formula:
- ##STR6## wherein X is hydrogen, methyl, ethyl, or phenyl and Y and Z are hydrogen or methyl, modified by addition of C.sub.1 -C.sub.18 alkyl (meth) acrylate, by addition of 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.
Dependencies are inferred from the claim text.