Latent, thermal cure accelerators for epoxy-aromatic amine resins having lowered peak exotherms

摘要

A thermally-curable aromatic amine-epoxy composition comprises (a) at least one polyepoxy compound; (b) a curing amount of at least one aromatic polyamine compound; and (c) a catalytically effective amount of at least one cure accelerator compound which is a pi -electron acceptor, and which lowers the cure exotherm peak temperature (as measured by differential scanning calorimetry (DSC) at 10 DEG C. per minute) of the composition by at least about 8 percent relative to the corresponding composition without the cure accelerator. Such accelerator compounds moderate and/or accelerate the thermal curing of aromatic amine-epoxy resins, enabling cure to occur at lower temperatures and/or in shorter time periods than those required for the unaccelerated composition.