SILICONE RESIN COMPOSITION, SILICONE RESIN SHEET, OPTICAL SEMICONDUCTOR ELEMENT DEVICE, AND PRODUCING METHOD OF SILICONE RESIN SHEET

摘要

A silicone resin composition contains a first organopolysiloxane having, in one molecule, both at least two ethylenically unsaturated hydrocarbon groups and at least two silanol groups; a second organopolysiloxane having, in one molecule, at least two hydrosilyl groups without having an ethylenically unsaturated hydrocarbon group; a hydrosilylation catalyst; and a hydrosilylation retarder.