Patent ID: 6455784
Filing Date: 2002-09-24
Classification: C08K,C08L,H05K,Y10T

Abstract:
A curable sheet for the formation of a wiring circuit layer by circuit transfer from a transfer base material, which sheet comprises a thermosetting polyphenylene ether resin composition comprising:(A) a reaction product between a polyphenylene ether resin and an unsaturated carboxylic acid or acid anhydride; (B) triallyl isocyanurate and/or triallyl cyanurate; (C) a hydrogenated block copolymer obtained by hydrogenation of a block copolymer having at least one polymer block A mainly comprising an aromatic vinyl compound and at least one polymer block B mainly comprising a conjugated diene compound; and (D) an inorganic filler, said composition containing 45 to 55 parts by weight of Component (A), 55 to 45 parts by weight of Component (B) and 25 to 35 parts by weight of Component (C), each based on 100 parts by weight of the total of Components (A) and (B), and containing 20 to 80 vol. % of Component (D).