Patent ID: 11840608

Abstract:
One of the purposes of the present invention is to provide a silicone which has polymerizable groups at the both terminals and an amphiphilic side chain and which provides a copolymer having high surface wettability. The present invention provides a silicone represented by the formula (1): in the formula (1) R1 is a group represented by the following formula (2): wherein n is an integer of 2 to 8 and R4 is a methyl group or a hydrogen atom, “a” is an integer of 1 to 500, b is an integer of 1 to 100, provided that a+b is 50 to 600, the siloxane units in the aforesaid parentheses may be bonded in a block or at random, R2 is, independently of each other, a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, R3 is, independently of each other, an alkyl group having 1 to 6 carbon atoms, A1 is a group represented by the formula (3) or (3′): wherein R is a hydrogen atom or a methyl group, B1 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, or an acyl group having 1 to 6 carbon atoms, m is an integer of 0 to 8, p is an integer of 1 to 10, q is an integer of 1 to 50, and the polyether units in the parentheses are bonded in the above-described order.