Patent ID: 8772430

Claim:
A silicone resin obtained by allowing a cage octasilsesquioxane having a group represented by formula (1) below, to react with an alkenyl group-containing polysiloxane containing an alkenyl group in the presence of a hydrosilylation catalyst such that a hydrosilyl group of the cage octasilsesquioxane remains in a ratio at which a molar ratio of an alkenyl group of the alkenyl group-containing polysiloxane to the hydrosilyl group of the cage octasilsesquioxane is below 1: (where R 1 represents a monovalent hydrocarbon group, R 2 represents hydrogen or a monovalent hydrocarbon group, and the molar ratio of monovalent hydrocarbon group: hydrogen in R 2 in the cage octasilsesquioxane as a whole is, as an average value, in a range of 6.5:1.5 to 5.5:2.5).