Invention Grant
- Patent Title: Polyolefin catalyst and method for preparing polyolefin by using same
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Application No.: US16463325Application Date: 2017-09-27
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Publication No.: US11359040B2Publication Date: 2022-06-14
- Inventor: Byung Hun Chae , Joon Keun Min , Sung Won Jung , Youn Jin Hong , Hyun Yul Woo
- Applicant: LOTTE CHEMICAL CORPORATION
- Applicant Address: KR Seoul
- Assignee: LOTTE CHEMICAL CORPORATION
- Current Assignee: LOTTE CHEMICAL CORPORATION
- Current Assignee Address: KR Seoul
- Agency: Osha Bergman Watanabe & Burton LLP
- Priority: KR10-2016-0156361 20161123,KR10-2017-0073297 20170612
- International Application: PCT/KR2017/010745 WO 20170927
- International Announcement: WO2018/097468 WO 20180531
- Main IPC: C07F17/00
- IPC: C07F17/00 ; C08F4/6592 ; C08F210/16 ; C08F2/38 ; C08F4/642 ; C07F19/00 ; C08F4/659 ; C08F4/14
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:
Public/Granted literature
- US20190270833A1 POLYOLEFIN CATALYST AND METHOD FOR PREPARING POLYOLEFIN BY USING SAME Public/Granted day:2019-09-05
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