| abstract |
A polymerization initiator for (meth) acrylic graft silicone by group transfer polymerization. A high-molecular polymerization initiator represented by the following formula (I). M 1 a M 2 b D 1 c D 2 d T 1 e T 2 f Q g (I), M 1 = R 1 3 SiO 1/2, M 2 = R 1 2 R 2 SiO 1/2, D 1 = R 1 2 SiO 2/2, D 2 = R 1 R 2 SiO 2/2, T 1 = R 1 SiO 3/2, T 2 = R 2 SiO 3/2, Q = SiO 4/2 [R 1 Is a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. R 2 is a group having a ketene silyl acetal structure represented by the following formula (II). (A is a single bond or a divalent organic group, R 3 is a hydrogen atom or a substituted or unsubstituted alkyl group, and R 4 is a substituted or unsubstituted alkyl group.) A, b, c, d, e, f and g are 0 or positive integers, and b + d + f ≧ 1. ] [Selection diagram] None |