| 摘要 |
PROBLEM TO BE SOLVED: To provide a room temperature-curable organopolysiloxane composition which is useful especially as a mold making material and of which the curing reaction can be accelerated without increasing the amount of a catalyst even at low temperatures and without badly influencing the heat resistance of the resultant cured product while enabling a pot life enough for working, e.g. molding, to be ensured. SOLUTION: This organopolysiloxane composition contains (a) 100 pts.wt. organopolysiloxane represented by formula [I] (wherein each R<SP>1</SP>is independently an optionally substituted monovalent hydrocarbon group; and n is such a number as to give a viscosity of 25-1,000,000 mm<SP>2</SP>/s at 25°C), (b) 0.5-20 pts.wt. organosilane and/or organosiloxane having at least three silicon atom-bonded hydrolyzable groups, (c) 0.01-20 pts.wt. phosphoric ester, and (d) an effective amount of a curing catalyst. COPYRIGHT: (C)2004,JPO
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