POLAR VINYL MONOMER POLYMERIZATION CATALYST AND PRODUCTION OF POLAR VINYL POLYMER USING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain the subject stable catalyst easy to control and handle, capable of polymerizing a polar vinyl monomer singly by reaction between a specific titanium complex containing a ligand having a cyclopentadienyl skeleton and an alkyllithium. SOLUTION: This catalyst, a complex of the formula Cp'Cp"TiR [e.g. bis(cyclopentadienyl)methyltitanium] or of the formula, is obtained by reaction between (A) a trivalent titanium complex containing a ligand having a cyclopentadienyl skeleton, e.g. a complex of the formula Cp'Cp"TiX (Cp' and Cp" are each a ligand having a cyclopentadienyl skeleton; X is a halogen) and (B) an alkyllithium of the formula Rli (R is a 1-10C alkyl or the like) (e.g. methyllithium) pref. at -50 to 100 deg.C for 0.5 h to 10 days; wherein it is preferable that the molar ratio A/B is 0.5-20.