Patent ID: 6780811
Filing Date: 2004-08-24
Classification: C08F

Abstract:
A catalyst composition for living free radical polymerization comprising:a transition metal complex MXp, a ligand, and a compound capable of generating free radicals, wherein M is a transition metal, X is halogen, â€”NO2, â€”NCS, â€”NCO, â€”SCN, â€”CN, â€”N3, â€”SO4, carboxylate group, or â€”PF6, p is the valence of the transition metal; wherein the ligand is represented by formula (I): wherein R1 can be the same or different and is C1-20 alkyl, C6-20 aryl, C7-20 alkylaryl, C7-20 arylalkyl, or heterocyclic groups; R2 can be the same or different and is H, C1-20 alkyl, C6-20 aryl, C7-20 alkylaryl, C7-20 arylalkyl, heterocyclic groups, alkyl sulfide groups, nitrile groups, alkylsilyl, or ester groups; n is an integer of 0 to 6; and A is deleted or an S or O atom, wherein the molar ratio of the transition metal complex MXp and the ligand is 1 to 4.