Idemitsu Kosan Company, Limited

Takehito Konakazawa

Kiyokazu Katayama

Shojiro Tanase

Nobuhiro Yabunouchi

Takanori Sadashima

Hideaki Noda

Kenji Tanaka

A magnesium compound obtainable by reacting metal magnesium, ethanol, an alcohol having from 3 to 10 carbon atoms and a halogen and/or a halogen-containing compound containing at least 0.0001 gram atom of a halogen atom relative to one gram atom of the metal magnesium at 0 to 70&#xb0; C., which comprises composition represented by the formula (I), and which has a particle diameter Dcorresponding to 50% of cumulative weight fraction of from 4 to 20 &#x3bc;m and a particle size distribution index (P) of P&#x3c;4.0:Mg(OCH)(OR)&#x2003;&#x2003;(I)where n is a numerical value satisfying 0&#x3c;n&#x3c;0.35, Ris CH, and m is an integer of from 3 to 10.

Magnesium compound, solid catalyst component, catalyst for ethylene polymerization and method of producing ethylene polymer

A magnesium compound represented by the formula (I):Mg(OCH)(OR)&#x2003;&#x2003;(I)where Ris CH(where m is an integer of from 3 to 10), and n is a numerical value satisfying 0&#x3c;n&#x3c;0.35; a solid catalyst component for olefin polymer using the magnesium compound; a catalyst for olefin polymer; and methods of producing olefin copolymers such as a propylene-based random copolymer and propylene-based block copolymer by using the catalyst for olefin polymer.

Magnesium compound, catalyst for olefin polymerization and method for producing olefin polymer

A method of producing a magnesium compound by reacting the following components (i), (ii) and (iii):

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Ichihara, Japan

Takehito Konakazawa