Process for producing alpha-olefin polymers.

摘要

A process for producing an alpha -olefin polymer which comprises homopolymerizing or copolymerizing an alpha -olefin by the use of a catalyst system comprising: (A) a solid catalyst component (A) containing at least magnesium, titanium, a halogen and an ester compound as indispensable components, and (B) a catalyst component (B) produced by reacting an organoaluminum compound represented by the general formula R<1>mAlY3-m (R<1> represents an aliphatic hydrocarbon group having 1 to 8 carbon atoms, Y represents a halogen, hydrogen or an alkoxy group having 1 to 20 carbon atoms, and m represents a number satisfying 2 </= m </= 3) with an organic silicon compound represented by the general formula R<2>nSi(OR<3>)4-n (R<2> represents an alicyclic hydrocarbon group or an aromatic hydrocarbon group having 5 to 20 carbon atoms, R<3> represents a hydrocarbon group having 1 to 20 carbon atoms, and n represents a number satisfying 0 </= n </= 3) in the state of a solution so that the product of this reaction becomes satisfying the following formula: 0.2 </= K </= 2.2, wherein: <MATH> [S represents the area of a peak in the <1><3>C-NMR spectrum of the reaction product assignable to the Al-R<1> bond, S min represents the area of a peak in the <1><3>C-NMR of the product assignable to the Si-R<1> bond formed by the reaction with the organoaluminum compound, and Z represents the molar ratio of Si atoms to Al atoms in component (B)]. t