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:
Sep. 27, 2011
Filed:
Mar. 18, 2008
Hidenori Hanaoka, Suita, JP;
Masaaki Nabika, Ichihara, JP;
Hidenori Hanaoka, Suita, JP;
Masaaki Nabika, Ichihara, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A transition metal complex of the following formula (1): in which A represents an atom of Group 16 of the periodic table; Brepresents an atom of Group 14 of the periodic table; Mrepresents a transition metal atom of Group 4 of the periodic table; Cprepresents a group having a cyclopentadiene anion backbone; R, R, R, R, Rand Rrepresent independently of one another a hydrogen atom, a halogen atom, a Calkyl group optionally substituted with a halogen atom; R, R, R, R, Rand Rrepresent independently of one another a hydrogen atom, a Calkyl group optionally substituted with a halogen atom; and a 1,3-diene comprising R, R, R, R, R, Rand 4 carbon atoms coordinates on M, and the 1,3-diene may be of either a cis or trans form, or a mixed form thereof, although the coordination form is not limited, and the double bonds may be delocalized. When this transition metal complex is used as a catalytic component, high molecular weight polyolefin is produced with high catalytic activity.