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:
Oct. 16, 2012
Filed:
Apr. 26, 2011
Yasuki Fujiwara, Chiba, JP;
Wataru Hirahata, Chiba, JP;
Hirofumi Hamaki, Chiba, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
The present invention aims at providing a process for producing a solid catalyst for olefin polymerization, the solid catalyst component being capable of providing a polymer having high stereoregularity when an α-olefin is polymerized; a process for producing a solid catalyst component, which is used for producing the solid catalyst; and a process for producing an olefin polymer using the solid catalyst. This object can be achieved by a process for producing a solid catalyst component (A), the process including a step of bringing a titanium compound (a), a magnesium compound (b) and an internal electron donor represented by Formula (I) into contact with each other: where Ris a hydrocarbyl group having 1 to 20 carbon atoms; R, R, R, and Rare each independently selected from a hydrogen atom, a halogen atom and a hydrocarbyl group having 1 to 20 carbon atoms, and at least one selected from R, R, R, and Ris a hydrocarbyl group having 1 to 20 carbon atoms; and Ris a halogen atom.