Patent ID: 8049042

Claim:
A compound represented by formula (6): wherein J is selected from the group consisting of: E 1 represents a functional group having polymerization termination ability or chain transfer ability; K 1 and K 2 each independently represent at least one selected from the group consisting of alkylene, cycloalkylene, oxyalkylene, arylene, a divalent thiazoline ring, a divalent oxazoline ring and a divalent imidazoline ring; L 1 and L 2 each independently represent at least one selected from the group consisting of —C(O)O—, —C(O)— and —OC(O)—; M 1 and M 2 each independently represent at least one selected from the group consisting of alkylene, cycloalkylene, oxyalkylene and arylene; Y represents an acid-decomposable linkage; n represents an integer corresponding to the valencies of J; and k1, k2, l1, l2, m1 and m2 each represent the number of K 1 , K 2 , L 1 , L 2 , M 1 and M 2 , respectively, and are each independently 0 or 1.