| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition improved in the mechanical strength of the cured product thereof without impairing the quick curability thereof at high temperatures by including a polymer having an alkenyl group at its end, specific compound and specific platinum complex catalyst. SOLUTION: This composition is obtained by including (A) a polymer having at its end an alkenyl group of the formula H2C=C(R1) or the formula HC(R1)= CH (R1 is a <=10C hydrocarbon group), (B) a compound having at least 2 hydrosilyl groups in the molecule and (C) a platinum complex catalyst containing no conjugated base of a strong acid as a ligand, at preferably 10-1 to 10-8 mol, more preferably 10-3 to 10-6 mol, per mol of the unsaturated group in the component A. The component C is preferably a platinum-vinylsiloxane complex, and especially preferably platinum-1,3-divinyl-1,1,3,3- tetramethyldisiloxane complex, platinum-1,3,5,7-tetravinyl-1,3,5,7- tetramethylcyclotetrasiloxane complex or the like.
|
