Catalyst composition for living free radical polymerization and process for polymerizing (meth) acrylic, vinyl, vinylidene, and diene monomers using the catalyst composition

1. Field of the Invention A catalyst composition for living free radical polymerization. The catalyst composition includes a transition metal complex MXand a ligand, wherein M is a transition metal; X is halogen, -NO, -NCS, -NCO, -SCN, -CN, -N, -SO, carboxylate group, or -PF; p is the valence of the...

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Bibliographic Details
Main Authors Shih, Kuo-Chen, Chen, Li-Jiun, Chao, Yu-Shan
Format Patent
LanguageEnglish
Published 24.08.2004
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Summary:1. Field of the Invention A catalyst composition for living free radical polymerization. The catalyst composition includes a transition metal complex MXand a ligand, wherein M is a transition metal; X is halogen, -NO, -NCS, -NCO, -SCN, -CN, -N, -SO, carboxylate group, or -PF; p is the valence of the transition metal, the ligand is represented by formula (I): wherein Rcan be the same or different and is Calkyl, Caryl, Calkylaryl, Carylalkyl, or heterocyclic groups; Rcan be the same or different and is H, Calkyl, Caryl, Calkylaryl, Carylalkyl, 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 MXand the ligand is 1 to 4. The catalyst composition of the present invention can be used to polymerize (meth)acrylic, vinyl, vinylidene, and diene monomers, and the polymer obtained has narrow polydispersity.