The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2007
Filed:
Apr. 26, 2004
Shohjiroh Tanase, Ichihara, JP;
Takehiro Tsuda, Ichihara, JP;
Tsuyoshi Ota, Ichihara, JP;
Hideo Funabashi, Ichihara, JP;
Shohjiroh Tanase, Ichihara, JP;
Takehiro Tsuda, Ichihara, JP;
Tsuyoshi Ota, Ichihara, JP;
Hideo Funabashi, Ichihara, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
The invention relates to a magnesium compound effective in producing olefin polymers having an increased bulk density and a narrowed particle size distribution, not lowering the stereospecificity of the polymers produced and not lowering the polymerization activity in producing the polymers, to an olefin polymerization catalyst comprising the compound, and to a method for producing such olefin polymers. The olefin polymerization catalyst comprises (A) a solid catalyst component prepared by contacting a magnesium compound having a specific particle size distribution index (P), a titanium compound and an electron donor compound with each other, (B) an organometallic compound, and (C) an electron donor. The olefin polymerization method comprises polymerizing an olefin in the presence of the catalyst to give olefin polymers.