Title:
SOLID POLYMETHYLALUMINOXANE COMPOSITION AND PROCESS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2010/055652
Kind Code:
A1
Abstract:
Disclosed are: a solid polymethylaluminoxane composition which does not utilize silica or the like, has the form of relatively fine particles, has more uniform particle sizes, and exhibits a high polymerization activity when used in the preparation of an olefin polymer; a process for producing the solid polymethylaluminoxane composition; a polymerization catalyst; and a process for producing an olefin polymer. Specifically disclosed are: a solid polymethylaluminoxane composition which has an aluminum content of 36 to 41 mass% and contains a methyl group derived from a trimethylaluminum moiety at a molar fraction of 12 mol% or less; a process for producing the solid polymethylaluminoxane composition, which comprises the step of heating an aromatic hydrocarbon solution containing polymethylaluminoxane and trimethylaluminum to cause the precipitation of the solid polymethylaluminoxane composition; a polymerization catalyst for an olefin, which comprises the solid polymethylaluminoxane composition and a transition metal compound as catalyst components; and a process for producing an olefin polymer by using the polymerization catalyst.
Inventors:
KAJI, Eiichi (Mason Branche 502, 1-2 Midori-machi, Shunan-sh, Yamaguchi 75, 〒7450075, JP)
Application Number:
JP2009/006019
Publication Date:
May 20, 2010
Filing Date:
November 11, 2009
Export Citation:
Assignee:
TOSOH FINECHEM CORPORATION (4555, Kaisei-cho Shunan-sh, Yamaguchi 06, 〒7460006, JP)
東ソー・ファインケム株式会社 (〒06 山口県周南市開成町４５５５番地 Yamaguchi, 〒7460006, JP)
KAJI, Eiichi (Mason Branche 502, 1-2 Midori-machi, Shunan-sh, Yamaguchi 75, 〒7450075, JP)
東ソー・ファインケム株式会社 (〒06 山口県周南市開成町４５５５番地 Yamaguchi, 〒7460006, JP)
KAJI, Eiichi (Mason Branche 502, 1-2 Midori-machi, Shunan-sh, Yamaguchi 75, 〒7450075, JP)
International Classes:
C08F4/6592; C08F10/00; C08G79/10
Attorney, Agent or Firm:
SIKs & Co (8th Floor, Kyobashi-Nisshoku Bldg. 8-7, Kyobashi 1-chome, Chuo-k, Tokyo 31, 〒1140031, JP)