Patent ID: 8846821

Claim:
A metal-crosslinked organopolysiloxane-thio block vinyl copolymer [D], comprising an organopolysiloxane-thio block vinyl copolymer [C] crosslinked with a divalent metal [M], said copolymer [C] comprising a carboxylic acid-containing vinyl copolymer block [A], formed from at least one constitutional unit derived from a polymerizable unsaturated carboxylic acid (a1) and at least one constitutional unit derived from at least one other polymerizable unsaturated monomer (a2) copolymerizable with the polymerizable unsaturated carboxylic acid (a1), and an organopolysiloxane-thio block [B] represented by the following formula [I]: wherein: each R 11 independently represents a hydrocarbon group of 1 to 10 carbon atoms; R 12 , R 13 and R 14 each independently represent R 11 or a divalent thio organic group of 1 to 20 carbon atoms, such that at least one of R 12 , R 13 and R 14 is a divalent thio organic group of 1 to 20 carbon atoms; t is an integer of not less than 0; and u is an integer of not less than 1.