Anhydride Epoxy Curing Agent with Imidazole Salt Additives for Epoxy Resin Systems

摘要

At least one imidazole salt represented by the structure: wherein R, R 'is H or lower alkyl of 1 to 20 carbon atoms, preferably 1 to 7 carbon atoms, haloalkyl (1 (1-7 carbon atoms), ester group (s), substituted alkyl, and X ^- is a carboxylate anion of 1-40 carbon atoms; And at least one anhydride curing agent. The disclosed imidazole salts provide improved latency for epoxy systems while maintaining reactivity at elevated temperatures when combined with anhydride curing agents. Also disclosed are methods for forming epoxy compositions, cured epoxy products, and cured epoxy products.