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:
Jun. 14, 2022
Filed:
Sep. 27, 2017
Applicant:
Lotte Chemical Corporation, Seoul, KR;
Inventors:
Byung Hun Chae, Daejeon, KR;
Joon Keun Min, Daejeon, KR;
Sung Won Jung, Seoul, KR;
Youn Jin Hong, Daejeon, KR;
Hyun Yul Woo, Daejeon, KR;
Assignee:
LOTTE CHEMICAL CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 17/00 (2006.01); C08F 4/6592 (2006.01); C08F 210/16 (2006.01); C08F 2/38 (2006.01); C08F 4/642 (2006.01); C07F 19/00 (2006.01); C08F 4/659 (2006.01); C08F 4/14 (2006.01);
U.S. Cl.
CPC ...
C08F 210/16 (2013.01); C07F 17/00 (2013.01); C07F 19/00 (2013.01); C08F 2/38 (2013.01); C08F 4/14 (2013.01); C08F 4/642 (2013.01); C08F 4/659 (2013.01); C08F 4/6592 (2013.01); C08F 2420/01 (2013.01);
Abstract
Disclosed are a polyolefin having a high molecular weight by using a novel metallocene catalyst; a method for preparing the polyolefin by using the same; and a method for preparing an ethylene-propylene random copolymer having high molecular weight, high syndiotacticity and small crystal size, thereby providing injection molded articles with improved transparency. The present invention provides a transition metal compound represented by chemical formula 1: