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.:

US 7453005 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 18, 2008

Filed:

Jan. 24, 2005
Applicants:

Takuji Okamoto, Ichihara, JP;

Takashi Kashiwamura, Ichihara, JP;

Inventors:

Takuji Okamoto, Ichihara, JP;

Takashi Kashiwamura, Ichihara, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 17/00 (2006.01); C07F 5/02 (2006.01); C07F 9/28 (2006.01);
U.S. Cl.
CPC ...
Abstract

A transition metal compound useful as a component of a catalyst for olefin polymerization and a highly active polymerization catalyst capable of producing a high molecular weight olefin polymer. The catalyst for olefin polymerization contains a transition metal compound represented by formula (1) wherein M is a metal element of the groups 3 to 10 of the Periodic Table or a lanthanoid; X represents a ligand having a sigma bond for binding to M, and when X is plural, the Xs may be the same or different; Y represents a Lewis base, and when Y is plural, the Ys may be the same or different; Aand Arepresent crosslinking groups and at least one thereof has a boron or phosphorous atom as a crosslinking atom; q is an integer of 1 to 5 and equals [(the valance of M)−2]; r is an integer of 0 to 3; and Qand Qhave a specific structure, and Qand Qmay be different or the same.


Find Patent Forward Citations

Okamoto, Takuji. (2008). Transition metal compound and catalyst for olefin polymerization (U.S. Patent No. 7453005). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7453005

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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