Patent ID: 9056984
Filing Date: 2015-06-16
Classification: C08G,C08L,H01L

Abstract:
1. A curable composition, comprising: (A) a mixture of a first crosslinked polyorganosiloxane including a siloxane unit of Formula A and a siloxane unit of Formula B, having a ratio (B/(A+B)) of a number of moles (B) of the siloxane unit of Formula B to the sum of numbers of moles (A+B) of the siloxane units of Formulas A and B of 0.05 to 0.7, and a second crosslinked polyorganosiloxane including a siloxane unit of Formula A and a siloxane unit of Formula B, having a ratio (B/(A+B)) of a number of moles (B) of the siloxane unit of Formula B to the sum of numbers of moles (A+B) of the siloxane units of Formulas A and B, which is different from that of the first crosslinked polyorganosiloxane, of 0.3 to less than 1; (B) a polyorganosiloxane including a hydrogen atom and an aryl group, which bind to a silicon atom, having a molar ratio of aryl (Ar) groups to silicon (Si) atoms of 0.25 or more, and having 3 to 10 silicon atoms: where R (C) a polyorganosiloxane including a hydrogen atom binding to a silicon atom, having a molar ratio of aryl (Ar) groups to silicon (Si) atoms of 0.3 or less, and including 10 to 50 silicon atoms.