Patent ID: 7919570

Claim:
A multibranched polymer comprising a structure represented by formula (II): wherein Z represents (CH 2 ) q or a p-phenylene group, q represents an integer of 0 to 3, R 10 , R 11 , R 12 and R 13 each independently represents a hydrogen atom, a C1-C6 alkyl group, an aryl group which may have a substituent, a halogen atom, or a C1-C6 alkoxyl group, n 3 , n 4 , n 5 and n 6 each independently represents an integer of 0 to 3, X 0 , X 1 , X 2 and X 3 each independently represents a linking group containing any atom selected from the group consisting of carbon, nitrogen, oxygen, silicon, phosphorus, sulfur, germanium, arsenic, selenium, tin, antimony, tellurium, and lead, Y 0 , Y 1 , Y 2 and Y 3 each independently represents a functional group having a structure capable of having an active halogen atom, p 0 to p 3 each independently represents an integer of 0 or 1 or more, and Q 0 , Q 1 , Q 2 and Q 3 each independently represents an arm moiety having a repeating unit derived from a polymerizable unsaturated bond.