| 摘要 |
PROBLEM TO BE SOLVED: To obtain an ordinary-temperature-curing sealing material excellent in adhesive strength, watertightness and airtightness by including a specified amount of an organopolysiloxane having hydroxyl groups at both ends, a specified amount of a crosslinking agent, a specified amount of a catalyst, a specified amount of a filter and a specified amount of a wetting agent. SOLUTION: This material comprises 100 pts.wt. organopolysiloxane having hydroxyl groups at both ends and having an average degree of polymerization of desirably 3,000 or above, more desirably 5,000-10,000 with 50-500, desirably 150-400 equivalents, per equivalent of the hydroxyl groups, of a crosslinking agent [e.g. methyltris(methyl ethyl ketoxide)silane}, 0.005-0.1 pt.wt., desirably 0.01-0.05 pt.wt. catalyst (e.g. dibutyltin laurate), 5-50, desirably [0-30 pts.wt. filler (e.g. fumed silica) and 0.5-10 pts.wt. wetting agent (e.g. silicone oil). The material may optionally contain desirably 2.0 pts.wt. or below adhesion aid (e.g.γ-aminopropyltriethoxysilane).
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