| abstract |
Provided is a curable silicone resin composition for forming a material (sealing material, lens, etc.) having excellent sulfur barrier properties while maintaining thermal shock resistance. A curable silicone resin composition comprising the following component (A), component (B), component (C), and component (D). (A): Polysiloxane having two or more alkenyl groups and one or more aryl groups in the molecule, (B): One or more hydrosilyl groups in the molecule, and no aliphatic unsaturated group Polyorganosiloxane, (C): isocyanurate compound represented by formula (1), (D): branched polyorganosiloxane having one or more alkenyl groups in the molecule |