Polymerization of Methyl Methacrylate with a Novel Titanium Complex
Novel titanium complex [2-O-(5- NO2)C6H3CH=N[(C6H4) –2-O ]]2TiCl2 (1) has been prepared by treatment of the ligand complex 1a with TiCl4•2THF in dichloromethane solution. The complex 1a and 1 were characterized by 1H-NMR . Activated by MAO, Complex 1 displayed very high activity for methyl methacrylate polymerization and the viscosity-average molecular weight of PMMA is more than 35×104 at 60°C.The molecular-weight distribution of PMMA measured by gel permeation chromatography (GPC) is narrow.
Z. Z. Cheng et al., "Polymerization of Methyl Methacrylate with a Novel Titanium Complex", Advanced Materials Research, Vols. 179-180, pp. 1203-1207, 2011