Patent Number: 6,255,244

Title: Polymerization catalysts for olefinic and styrenic monomer and polymer production method

Abstract: A catalyst for polymerization of olefins or styrenes, which is prepared by contacting (A) a transition metal compound, (B) at least one material selected from the group consisting of oxygen-containing compounds and compounds which react with a transition metal compound to form an ionic complex, and optionally (C) an alkylating agent with each other, and contacting these materials (A), (B) and (C) with an adsorbing substance (D), during or after the contact of materials (A), (B) and (C) with each other, followed by removing the adsorbing substance (D) from the contacted materials (A), (B) and (C).

Inventors: Yabunouchi; Nobuhiro (Ichihara, JP)

Assignee: Idemitsu Petrochemical Co., Ltd.

International Classification: B01J 31/14 (20060101); B01J 31/16 (20060101); B01J 31/12 (20060101); B01J 31/22 (20060101); C08F 12/04 (20060101); C08F 10/00 (20060101); C08F 12/00 (20060101); C08F 12/08 (20060101); C08F 4/00 (20060101); C08F 4/02 (20060101); B01J 21/00 (20060101); B01J 21/16 (20060101); B01J 31/26 (20060101); B01J 31/38 (20060101); C08F 4/659 (20060101); C08F 4/6592 (20060101); B01J 021/16 ()

Expiration Date: 07/03/2018