ADDITIVE FOR USE IN THERMOSETTING EPOXY RESIN COMPOUND, ITS PREPARATION, CURING AGENT FOR EPOXY RESIN COMPOUND, AND CURE ACCELERATOR FOR EPOXY RESIN

摘要

An additive for thermocurable epoxy resin compositions contains or comprises adducts and/or reaction products of… (a) imidazoles of the formula I… …IMAGE… where R1, R2, R3 and R4 are H, alkyl having 1 to 3 carbon atoms or phenyl, and… (b) at least one aromatic hydroxy acid, such as a phenol- or naphtholsulphonic acid. It is suitable for use as the sole curing agent or as an accelerator in combination with other latent curing agents.