Patent ID: 8383738
Filing Date: 2013-02-26
Classification: C08K,C08L,H05K,Y10T

Abstract:
1. An epoxy resin composition, comprising: (A) an epoxy resin having at least two epoxy groups in one molecule; and (B) a composite curing agent comprising 10 to 15 parts by weight of an amino-triazine-novolac resin, 4 to 8 parts by weight of diaminodiphenylsulfone, and 0.1 to 5 parts by weight of dicyandiamide, based on 100 parts by weight of the epoxy resin, wherein a weight ratio of the amino-triazine-novolac resin to diaminodiphenylsulfone is in the range of from 1.25:1 to 3.75:1 in the composite curing agent, and wherein a ratio of a weight of dicyandiamide to a total weight of the amino-triazine-novolac resin and diaminodiphenylsulfone is in the range of from 0.033:1 to 0.083:1.