Patent ID: 6133383
Filing Date: 2000-10-17
Classification: C08G

Abstract:
A method for preparing a high-heat-resistant-epoxy-resin composition, the method comprising the following steps:(a) adding a catalytic curing agent to a difunctional epoxy resin to yield a resin mixture having a temperature and a viscosity;(b) increasing the temperature of the resin mixture to at least approximately 120.degree. C. to yield a precursor material having a viscosity less than the viscosity of the resin mixture in step (a), wherein the precursor material has a temperature;(c) increasing the temperature of the precursor material to at least approximately 170.degree. C. to cure the precursor material to yield the high-heat-resistant-epoxy-resin composition;wherein the catalytic curing agent comprises N-benzyl-quinoxalinium-hexafluoroantimonate represented by the following formula ##STR2## wherein R is a hydrogen atom or an alkoxy group.