Idemitsu Kosan Company, Limited

Kana Minamimoto

Masao Aida

Jun Mase

Jun Kohiruimaki

Hideki Sato

Yushi Matsuda

A method for producing an olefin polymer including: polymerizing one or more &#x3b1;-olefins each having 6 to 20 carbon atoms in the presence of a metallocene catalyst to obtain an olefin polymer; deactivating and decalcifying the catalyst to obtain a decalcified polymerization reaction liquid; mixing the decalcified polymerization reaction liquid containing the olefin polymer with water; and washing the liquid with stirring at a stirring intensity of 0.1 kW/mor more for 1 minute or longer.

Method for producing olefin polymer

A method for producing an olefin polymer including: polymerizing one or more &#x3b1;-olefins each having 6 to 20 carbon atoms in the presence of a metallocene catalyst to obtain an olefin polymer, and diluting a polymerization reaction liquid with a solvent before or simultaneously with deactivation of the catalyst, thereby to lower the liquid viscosity of the polymerization reaction liquid to 10 mPa&#xb7;s or less to promote deactivation and decalcification of the catalyst.

A method for producing an &#x3b1;-olefin oligomer including: polymerizing in the presence of a catalyst one or more &#x3b1;-olefins having 6 to 20 carbon atoms to produce an &#x3b1;-olefin oligomer; and deactivating the catalyst by a deactivator from which oxygen is removed. A method for producing an &#x3b1;-olefin oligomer including: polymerizing in the presence of a catalyst one or more &#x3b1;-olefins having 6 to 20 carbon atoms to produce an &#x3b1;-olefin oligomer; and passing the reaction solution containing the &#x3b1;-olefin oligomer through a bag filter.

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Ichihara, Japan

Kana Minamimoto