Patent ID: 7968743

Claim:
A radical polymerization process, comprising: polymerizing at least one kind of vinyl monomer in the presence of a thiocarbonylthio compound represented by formula (I), of: wherein Z is independently perfluoroalkyl, alkyl, haloalkyl, aryl, alkylaryl, haloalkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy, alkoxyaryl, alkylsulfonyl, alkylsulfonylaryl, dialkylphosphinyl, or dialkylphosphinothioyl; R 1 and R 2 are each independently hydrogen, alkyl, aryl, alkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy or alkoxyaryl; R 3 is alkyl, aryl, alkylaryl, arylalkyl, aminoalkyl, alkylamino, alkoxy, haloalkylaryl, alkylsilyl, alkylthio, alkylthioaryl, or substituent containing CN, CO, COOH, COOCH 3 or heterocyclic moieties.