| abstract |
(57) [Summary] [Structure] An olefin polymerization method, which comprises contacting an olefin with a catalyst comprising the following components A, B and C to polymerize the catalyst. A: Group IVB transition metal compound having a substituted or unsubstituted cyclopentadiene ring as a ligand, B: alumoxane compound, C: BR n X 3-n boron compound. The use of (R: hydrocarbon residue of C 1 ~12, X:: halogen, C 1 to 12 alkoxy or aryloxy group, or H, n 1 to 3 integer) EFFECT reduced organoaluminum component , High activity, high molecular weight polyolefin can be manufactured. |