Patent ID: 6252010
Filing Date: 2001-06-26
Classification: B32B,C08G,C08L,C09D,C09J,H01L,H05K,Y10T

Abstract:
A siloxane-modified polyamideimide resin composition, comprising 100 parts by weight of a siloxane-modified polyamideimide resin and 1 to 200 parts by weight of a thermosetting resin ingredient, wherein the siloxane-modified polyamideimide resin is a resin produced by allowing a mixture (X) comprising a diamine (A) having three or more aromatic rings per molecule and a siloxane diamine (B) in a molar ratio (A)/(B) of 99.9/0.1 to 0.1/99.9 to react with trimellitic anhydride (C) in a molar ratio {(A)+(B)}/(C) of 1/2.05 to 1/2.20 to form a diimidodicarboxylic acid mixture (Y) containing an aromatic diimidodicarboxylic acid of general formula (1) and a siloxanediimidodicarboxylic acid of general formula (2), and allowing the diimidodicarboxylic acid mixture (Y) to react with an aromatic diisocyanate (D) of general formula (3) in a molar ratio of {(A)+(B)}/(D) of 1/1.05 to 1/1.50, and wherein the thermosetting resin ingredient comprises an epoxy resin having two or more glycidyl groups per molecule: ##STR10##wherein R.sub.1 is ##STR11##and X is ##STR12##wherein R.sub.2 is ##STR13##wherein R.sub.3 and R.sub.4 are each a divalent organic group, R.sub.5 to R.sub.8 are each an alkyl group, phenyl or a substituted phenyl, and n is an integer of 1 to 50,OCN--R.sub.9 --NCO (3)wherein R.sub.9 is ##STR14##