Addition-curable silicone composition, optical device encapsulating material and optical device

摘要

An addition-curable silicone composition includes: a three-dimensional network organopolysiloxane having at least one alkenyl group and at least one aryl group in one molecule, having a siloxane unit represented by the following general formula, R2SiO, and SiO2, and not having a unit represented by RSiO3/2, wherein R represents an organic group; a linear organopolysiloxane having at least two alkenyl groups and at least one aryl group in one molecule; an organosilicon compound having at least two hydrogen atoms bonded to silicon atoms per one molecule, and not having an alkenyl group; and a hydrosilylation catalyst containing a platinum group metal. Thereby, there can be provided an addition-curable silicone composition which provides a cured product having high refractive index, transparency, and temperature cycling resistance, an optical device encapsulating material, and an optical device which is encapsulated with the optical device encapsulating material.

主权项

1. An addition-curable silicone composition comprising:
A. a three-dimensional network organopolysiloxane having at least one alkenyl group and at least one aryl group in one molecule, having a siloxane unit represented by the following general formula,
R2SiO, and SiO2, and not having a unit represented by RSiO3/2,wherein R represents an organic group; B. a linear organopolysiloxane having at least two alkenyl groups and at least one aryl group in one molecule; C. an organosilicon compound having at least two hydrogen atoms bonded to silicon atoms per one molecule, and not having an alkenyl group, in an amount enough to cure the composition in the presence of a hydrosilylation catalyst described below; and D. the hydrosilylation catalyst containing a platinum group metal.