Latent, thermal cure accelerators for epoxy-aromatic amine resin

Details Latent, thermal cure accelerators for epoxy-aromatic amine resin Latent, thermal cure accelerators for epoxy-aromatic amine resin

1994-07-01

1996-07-30

Krass, Frederick

Stock material or miscellaneous articles

Composite

Of epoxy ether

528 88, 528 89, 528 90, 528 91, 528 92, 528 93, 528 94, 528361, 525502, 525504, 525505, 525506, C08G 5968, C08G 6510

Patent

active

055410006

ABSTRACT:
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.degree. 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.

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