| 摘要 |
PROBLEM TO BE SOLVED: To obtain a curable silicone composition capable of being cured through hydrosilylation reaction to form a cured silicone material having excellent repairing properties. SOLUTION: This curable silicone composition comprises (A) an organopolysiloxane comprising a unit of R12SiO2/2 in an amount of 80-96.5 mol%, a unit of R1SiO3/2 in an amount of 1.0-10.0 mol%, a unit of R13SiO1/2 in an amount of 0-6.0 mol%, and a unit of R12SiO1/2 in an amount of 0.25-4.0 mol% (R1 is a monovalent hydrocarbon; R2 is an alkenyl), (B) a diorganopolysiloxane having two or more alkenyl groups in a molecule in average, (C) an organopolysiloxane having two or more hydrogen atoms bonding to silicon atoms in a molecule in average (in such an amount that a mole ratio of the hydrogen atoms bonding to the silicon atoms in the component C to the total amount of the alkenyl groups in the component A and the component B attains to a range of 0.7 to 1.5), (D) a platinum-based catalyst for hydrosilylation reaction, and (E) alumina powder.
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