Patent ID: 7863391

Claim:
A curable silicone composition comprising: an organopolysiloxane (A) that contains in one molecule at least one epoxy-containing organic group, has a polystyrene-referenced weight-average molecular weight of at least 500, and is expressed by the following general unit formula: (RSiO 3/2 ) x [R 1 a SiO (4-a)/2 ] y where R represents a cycloalkyl group selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and cycloheptyl, at least one R 1 in one molecule represents an epoxy-containing univalent organic group with remaining R 1 representing a hydrogen atom or a univalent organic group except for an aromatic group and a cycloalkyl group, and where the following condition is observed: 0<aâ‰¦3; 0.2â‰¦xâ‰¦0.9; 0.1â‰¦yâ‰¦0.8; and x+y=1; a curing agent (B) for curing said component (A); and an organopolysiloxane (C) that contains in one molecule at least one epoxy-containing organic group and that is represented by the following average unit formula: R 2 b SiO (4-b)/2 where at least one R 2 in one molecule represents an epoxy-containing univalent organic group with remaining R 2 representing a hydrogen atom or a univalent organic group except for an aromatic group and a cycloalkyl group, and where the following condition is observed: 0.1<bâ‰¦3.