Curable Silicone Composition, Cured Product Thereof, And Optical Semiconductor Device

摘要

The present invention relates to a curable silicone composition comprising: (A) an organopolysiloxane having at least two alkenyl groups and at least one aryl group in a molecule, (B) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms in a molecule, (C) an organopolysiloxane having at least one aryl group in a molecule and containing a metal atom selected from the group consisting of V, Ta, Nb and Ce, and (D) a hydrosilylation-reaction catalyst. The present invention can provide the curable silicone composition, which does not develop a crack by thermal aging and further can form a cured material that exhibits less yellowing.

主权项

1. A curable silicone composition comprising:
(A) an organopolysiloxane having at least two alkenyl groups and at least one aryl group in a molecule; (B) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, in an amount such that the silicon-bonded hydrogen atoms in component (B) is from 0.1 to 10 moles per 1 mole of the alkenyl groups in component (A); (C) an organopolysiloxane having at least one aryl group in a molecule and a metal atom selected from the group consisting of V, Ta, Nb, and Ce, in an amount such that the metal atom in component (C) is from 20 to 2,000 ppm in terms of mass units based on the content of the composition; and (D) a catalytic amount of hydrosilylation reaction catalyst.