Combination System of Fluorine-containing Phenoxy-imine Ti Complex and Chain Transfer Agent: A New Methodology for Multiple Production of Monodisperse Polymers.

Multiple production of Zn-terminated polyethylene with narrow molecular weight distribution was attempted using the combination of fluorine-containing phenoxy-imine Ti complexes and Et2Zn. One of the two complexes promotes living polymerization in the presence of ethylene and Et2Zn and, moreover, undergoes chain transfer with Et2Zn in the absence of ethylene, resulting in a rare example of multiple production of nearly monodisperse Zn-terminated polyethylenes which are valuable intermediates for functional polymers and block copolymers.