Patent ID: 8258216
Filing Date: 2012-09-04
Classification: B32B,C08K,H05K

Abstract:
1. A thermosetting resin composition, comprising a cyanate ester resin; and a phosphate condensed ester of formula (I): wherein R 1 to R 4 are the same or different, a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, excluding the case where R 1 to R 4 are all hydrogen atoms; X is a bond, —CH 2 —, —C(CH 3 ) 2 —, —S—, —SO 2 —, —O—, —CO— or —N═N—; n is an integer of 0 or 1; and m is an integer of 0 to 5, said composition having a dielectric dissipation factor (Df) of about 0.006 or less at 10 GHz.