Patent ID: 8735525
Filing Date: 2014-05-27
Classification: C08G,C08K,C08L,H01L,Y10T

Abstract:
1. A curable composition that comprises: (A) a linear organosiloxane compound, which is represented by an average composition formula of Formula 1, of which a viscosity at 25° C. is from 1,000 mPa·s to 100,000 mPa·s, and of which a molar ratio of an alkenyl group having 2 to 12 carbon atoms and bound to a silicon atom with respect to the total silicon atoms ranges from 0.02 to 0.2; (B) a crosslinking type organosiloxane compound, which is represented by an average composition formula of Formula 2, of which a viscosity at 25° C. is 5,000 mPa·s or more, and of which a molar ratio of an alkenyl group having 2 to 12 carbon atoms and bound to a silicon atom with respect to the total silicon atoms ranges from 0.15 to 0.35; and (C) a hydrogen siloxane compound, which is represented by Formula 3, of which a viscosity at 25° C. is 300 mPa·s or less, of which a molar ratio of a hydrogen atom bound to a silicon atom with respect to the total silicon atoms ranges from 0.2 to 0.8 and of which a molar ratio of an aryl group with respect to the total silicon atoms is from 0.4 to 0.8, the organosiloxane compound (B) being comprised in a weight ratio of 50 parts by weight to 700 parts by weight relative to 100 parts by weight of the organosiloxane compound (A), and a molar ratio of a hydrogen atom bound to a silicon atom in the siloxane compound (C) with respect to an alkenyl group bound to a silicon atom in the organosiloxane compounds (A) and (B) ranging from 0.8 to 1.2: wherein R