Patent ID: 9629239
Date: 2017-04-18
CPC Classifications: B32B,C08G,C08J,C08K,H05K,Y10T

Claim:
1. A resin composition comprising: an epoxy resin (A) represented by the following general formula (I), wherein a plurality of R are each independently present and represent a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a phenyl group; and n is an average value and represents 1<n≦20; a curing agent (B) comprising a cyanate ester compound represented by the following general formula (II), wherein R represents a hydrogen atom or a methyl group, and n represents an integer of 1 to 50; a first filler (C); a second filler (D); and a wetting dispersant (E) comprising a copolymer containing at least one functional group comprising an acid group, wherein a content of the wetting dispersant (E) is 0.1 to 20 parts by mass based on 100 parts by mass of a total of the components (A) to (D); wherein a content of the epoxy resin (A) is 10 to 90 parts by mass based on 100 parts by mass of a total of the epoxy resin (A) and the curing agent (B); wherein a content of the curing agent (B) is 10 to 90 parts by mass based on 100 parts by mass of a total of the epoxy resin (A) and the curing agent (B); wherein the first filler (C) is borate particles coated with hexagonal boron nitride, and the second filler (D) is at least one selected from the group consisting of alumina, aluminum nitride, boehmite, and silica, and a content of the first filler (C) is 50 to 350 parts by mass based on 100 parts by mass of a total of the epoxy resin (A) and the curing agent (B), and further wherein a content of the second filler (D) is 50 to 700 parts by mass based on 100 parts by mass of a total of the epoxy resin (A) and the curing agent (B).