Preparation of polyolefin

Abstract

Abstract PURPOSE:To prepare a polyolefin in a high yield, by using a catalyst system consisting of a solid catalyst ingredient obtained by reacting a specified transition metal compound with an organomagnesium compound and an organoaluminum compound in an excellent catalyst activity. CONSTITUTION:A transition metal compound (a) of the formula as shown [where (C5R<2>n) is a (substd.) cyclopentadienyl group; R<2> is H or 1-20C hydrocarbyl group; R<1> is 1-4C alkylene bonding two (C5R<2>n) groups; R<3-4> is 1-20C hydrocarbyl, a halogen or H; M is Ti, Zr, V or Hf; m is 0 or 1; n is 5 when m=0 and 4 when m=1] is reacted with an organomagnesium compound or an organomagnesium compound ingredient selected from hydrocarbon-soluble complexes with an organometal compound which solubilizes it in a hydrocarbon (b), to give a solid catalyst ingredient A. The ingredient A is then blended with an organoaluminum compound B (e.g. aluminoxane) in such a ratio that 1g atom of element M in the ingredient A corresponds to 1-10<5>g atom of aluminum contained in the ingredient B, to give a catalyst system, and an olefin is polymerized in the presence of said catalyst system.

Inventors

• 👤 Yasuaki Sasaki
• 👤 佐々木　泰明

Bibliographic Details