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:
Jan. 12, 2010
Filed:
Apr. 23, 2007
Myung-ahn OK, Daejeon, KR;
Jong-sok Hahn, Daejeon, KR;
Dae Ho Shin, Daejeon, KR;
Sang-ook Kang, Seoul, KR;
Tae Eung Kim, Seoul, KR;
Myung-Ahn Ok, Daejeon, KR;
Jong-sok Hahn, Daejeon, KR;
Dae Ho Shin, Daejeon, KR;
Sang-Ook Kang, Seoul, KR;
Tae Eung Kim, Seoul, KR;
SK Energy Co., Ltd., Seoul, KR;
Abstract
The present invention relates to a bis-arylaryloxy catalyst system for the production of ethylene homopolymers or copolymers with α-olefins, which has high catalytic activity. More particularly, it relates to a transition metal catalyst comprising a group-IV transition metal as a central metal, a cyclopentadiene derivative around the central metal, and two aryloxide ligands substituted with aryl derivatives at the ortho-positions, the ligands not being bridged to each other, as well as a catalyst system comprising said catalyst and an aluminoxane co-catalyst or a boron compound co-catalyst, and a method for producing high-molecular-weight ethylene homopolymers or copolymers with α-olefins using the same.