| 摘要 |
A curable organopolysiloxane composition is provided, which includes (A) an organopolysiloxane containing at least one silicon atom-bonded alkenyl group within each molecule, (B) an organohydrogenpolysiloxane, which contains, within each molecule, at least one silicon atom-bonded hydrogen atom at a molecular chain terminal, and at least two silicon atom-bonded hydrogen atoms at non-terminal positions within the molecular chain, and which satisfies the formula shown below: <?in-line-formulae description="In-line Formulae" end="lead"?> 0<alpha/beta0.25 <?in-line-formulae description="In-line Formulae" end="tail"?> (wherein, a represents the number of silicon atom-bonded hydrogen atoms at non-terminal positions within the molecular chain, and beta represents the total number of silicon atoms within the component (B)), in sufficient quantity to provide from 0.1 to 5 silicon atom-bonded hydrogen atoms per silicon atom-bonded alkenyl group within the component (A), and (C) a platinum-based catalyst. The composition can be cured even at low temperatures, generates a cured product that suffers no surface wrinkling, and displays excellent storage characteristics
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