Magnesium compound, solid catalyst component for olefin polymerization, catalyst for olefin polymerization and method for producing polyolefin

Abstract

A magnesium compound obtained by reacting metallic magnesium having a sphericity (S) of less than 4.00, the sphericity (S) being represented by the following formula (I), an alcohol, and a halogen and/or a halogen-containing compound containing halogen atoms in an amount of 0.0001 gram atom or more relative to one gram atom of the metallic magnesium, S =( L 1 /L 2 ) 3   (I) wherein L 1 represents the maximum diameter of projection views of metallic magnesium determined by photographing with a scanning electron microscope and thereafter an image processing, and L 2 represents a diameter of a circle having an area equal to the area of the projection view of metallic magnesium. A solid catalyst component is obtained from the magnesium compound and a titanium compound, and a catalyst for olefin polymerization is obtained using the solid catalyst component.

1 .- 20 . (canceled) 
     
     
         21 . A method for producing a magnesium compound, comprising reacting metallic magnesium having an oxidized coating film with a thickness of 1 μm or less,
 an alcohol, and   a halogen and/or a halogen-containing compound containing halogen atoms in an amount of 0.0001 gram atom or more relative to one gram atom of the metallic magnesium,   wherein the metallic magnesium is formed into particles having an average diameter of 1 cm or less in an atmosphere of an inert gas.