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:
Apr. 26, 2011
Filed:
Dec. 28, 2007
Choong-hoon Lee, Daejeon Metropolitan, KR;
Eun-jung Lee, Daejeon Metropolitan, KR;
Seung-whan Jung, Suwon-si, KR;
Jung-a Lee, Daejeon, KR;
Bo-ram Lee, Seoul, KR;
Bun-yeoul Lee, Suwon-si, KR;
Choong-Hoon Lee, Daejeon Metropolitan, KR;
Eun-Jung Lee, Daejeon Metropolitan, KR;
Seung-Whan Jung, Suwon-si, KR;
Jung-A Lee, Daejeon, KR;
Bo-Ram Lee, Seoul, KR;
Bun-Yeoul Lee, Suwon-si, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention provides a novel transition metal complex where a monocyclopentadienyl ligand to which an amido group is introduced is coordinated, a method for synthesizing the complex, and olefin polymerization using the same. The method for preparing a transition metal complex according to the present invention comprises a step of blocking a by-reaction of a nitrogen atom using a compound containing a protecting group, and thus it is possible to prepare a transition metal complex in a simpler manner in a high yield. Further, the transition metal complex according to the present invention has a pentagon ring structure having an amido group connected by a phenylene bridge in which a stable bond is formed in the vicinity of a metal site, and thus, sterically monomers can easily approach the transition metal complex.