Patent ID: 9650512
Date: 2017-05-16
CPC Classifications: C08G,C08K,C08L,H05K,Y10T

Claim:
1. A halogen-free resin composition, comprising: (A) 100 parts by weight of epoxy resin; (B) 3 to 15 parts by weight of diaminodiphenyl sulfone (DDS); and (C) 7 to 55 parts by weight of phenolic co-hardener, wherein the phenolic co-hardener comprises at least one of tetrafunctional phenolic resin, biphenyl-phenol novolac resin, xylok phenol novolac resin, dicyclopentadiene-phenol resin (DCPD-phenol resin), and naphthalene-containing phenol novolac resin, or a combination thereof; wherein the epoxy resin is a combination of phenol novolac epoxy resin and bisphenol A novolac epoxy resin.