Patent ID: 6887936

Claim:
A vinyl polymer having, at a molecular chain terminus, a structure represented by the general formula 1: wherein R 3 is a hydroxy, amino, epoxy, carboxylic acid ester, ether, amide or silyl group, a group represented by the general formula 2: in which R 4 represents a hydrogen atom or a methyl group, or a polymerizable olefin-free organic group containing 1 to 20 carbon atoms, R 1 is a divalent hydrocarbon group containing 1 to 20 carbon atoms or a group having a structure represented by the general formula 3: in which R 5 is an oxygen atom, a nitrogen atom or an organic group containing 1 to 20 carbon atoms, R 6 is a hydrogen atom or a methyl group and each may be the same or different, and when R 3 is a group represented by the general formula 2, R 1 is â€”(CH 2 ) n â€”, â€”CH(CH 3 )â€”, â€”CH(CH 2 CH 3 )â€”, â€”C(CH 3 ) 2 â€”, â€”C(CH 3 )(CH 2 CH 3 )â€”, â€”C(CH 2 CH 3 ) 2 â€” or â€”CH 2 CH(CH 3 )â€”, wherein n is an integer of 1 to 20. and R 2 is a hydrogen atom or a methyl group and X is a halogen atom, a nitroxide or sulfide group or a cobalt porphyrin complex.