Solid catalyst component for olefin polymerization

Abstract

Abstract PURPOSE:To provide a catalyst component composed of an Mg compound, a Zr compound having a ligand consisting of a group having conjugated pi- electrons and an aluminooxane and giving a (co)polymer having high bulk density, uniform particle size and narrow molecular weight distribution and compositional distribution. CONSTITUTION:The objective catalyst is composed of (A) an Mg compound (e.g. dimethylmagnesium or amylmagnesium chloride), (B) a Zr compound having a ligand consisting of a group having conjugated pi-electrons [e.g. bis(cyclopentadienyl)zirconium monochloride monohydride] and (C) an organic Al compound consisting of an aluminooxane [e.g. the compound of formula I or II (R is CH3, etc.; m>2)] and having an atomic ratio of Zr to Mg (Zr/Mg) of 0.0001-1, an atomic ratio of Al to Zr (Al/Zr) of 5-2,000, an atomic ratio of halogen to Mg (X/Mg) of 0.1-10 and an average particle diameter of 2-200mum.

Inventors

• 👤 Mamoru Kioka
• 👤 Norio Kashiwa

Bibliographic Details