Patent ID: 9745464
Date: 2017-08-29
CPC Classifications: B32B,C08G,C08J,C08K,C08L,H05K

Claim:
1. A halogen-free flame retardant resin composition, according to parts by weight, the resin composition comprising: (A) a mixture of phenoxyphosphazene compound (A1) and compound (A2) having dihydrobenzoxazine ring, the mixture comprising 45-90 parts by weight, and the weight ratio of the phenoxyphosphazene compound (A1) and the compound (A2) having dihydrobenzoxazine ring is 1:25-1:12; (B) an epoxy resin with epoxy equivalent of 500-2000, the epoxy resin comprising 10-45 parts by weight; (C) a phenolic resin, the phenolic resin comprising 10-25 parts by weight; and (D) an amine curing agent, the curing agent comprising 0.5-10 parts by weight.