| 摘要 |
Provided is a room-temperature curable organopolysiloxane composition including (I) an organopolysiloxane, and (II) a silane compound containing silicon-bonded hydrolysable groups and/or a partial hydrolysis-condensation product thereof. The organopolysiloxane (I) is a condensation product of (A) an organosiloxane which includes R<SUB>3</SUB>SiO<SUB>1/2 </SUB>units wherein R represents an unsubstituted or substituted monovalent hydrocarbon group and SiO<SUB>4/2 </SUB>units, in which the molar ratio R<SUB>3</SUB>SiO<SUB>1/2 </SUB>to SiO<SUB>4/2 </SUB>is 0.6 to 1.2, and further includes less than 2.0% by weight of silicon-bonded hydroxyl groups, and (B) a diorganopolysiloxane with molecular chain terminals blocked with functional group-containing silyl groups. This composition generates a cured product or coating film with good transparency and good strength, which is useful as a coating material for electrical or electronic components or circuits, a sealant for liquid crystal display elements, and an antifouling paint for underwater structures.
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