| abstract |
(57) [Problem] To provide an olefin polymerization method used by improving the efficiency of a catalyst. SOLUTION: (a) pre-polymerizing the catalyst by contacting the catalyst with a co-catalyst and an olefin monomer under pre-polymerization conditions; (b) washing the pre-polymerized catalyst with an organic solvent; c) contacting the pre-polymerized catalyst with a cocatalyst for at least 2 seconds before introducing the catalyst into the polymerization reaction zone; |