| abstract |
(57) [Problem] To produce an olefin-based living polymer which can be converted into a terminal-functionalized polymer or a block copolymer. SOLUTION: (A) a zirconium-containing compound having one or two cyclopentadienyl skeletons, (B) a triphenylboron-based compound or a tetraphenylboron salt-based compound, and in some cases (C) a specific mono- Alternatively, using a catalyst comprising a trialkylaluminum-based compound and a titanium-containing compound (D) at a temperature higher than conventionally at -20 to An olefinic monomer having 2 to 20 carbon atoms is polymerized at -100 ° C to produce an olefinic living polymer. |