Patent ID: 6703133
Filing Date: 2004-03-09
Classification: C08G,C08L,H05K,Y10T

Abstract:
A polyimide silicone resin derived froma diamine comprising a diaminopolysiloxane and an acid dianhydride, wherein the resin comprises at least 50% by weight of a siloxane residual group; the resin has an elongation at rupture of 400% or higher and a modulus of elasticity of 500 N/mm2 or lower; and the acid dianhydride is at least one selected from the group consisting of 4,4â€²-hexafluoropropylidenebisphthalic dianhydride, 3,3â€²,4,4â€²-diphenylsulfonetetracarboxylic dianhydride, 3,3â€²,4,4â€²-biphenyltetracarboxylic dianhydride, 4,4â€²-benzophenonetetracarboxylic dianhydride, and ethylene glycol bistrimellitic dianhydride.