| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition not lowering the peeling resistance of a cured coating film by a separator ageing treatment by including two kinds of specific organosiloxanes, a silylated polymethylsilsesquioxane and a platinum catalyst. SOLUTION: This composition comprises (A) 100 pts.wt. of an organopolysiloxane having a viscosity of >=40 centipoises at 25 deg.C and having two or more crosslinking C=C double bonds in the molecule, (B) 0.5-20 pts.wt. of an organopolysiloxane having a viscosity of 1-1000 centipoises at 25 deg.C and two or more hydrogen atoms bound to Si atoms in the molecule, (C) 1-99 pts.wt. of a silylated polymethylsilsesquioxane formula II obtained by silylating the silanol group of a polymethylsilsesquioxane of formula I (m), (n) are each a number giving the above mol.wt.; (m)/[(m)+(n)] is placed in the region A; the region A is surrounded with the equation: (m)/[(m)+(n)]=0.152/(Mn×10<-3> )+0.10; the equation: 1/(Mn×10<-3> )=1000/2000, the equation: 1/(Mn×10<-3> )=1000/380, and the equation: (m)/[(m)+(n)]=0.034/(Mn×10<-3> )}, and (D) a platinum catalyst. |
