Invention Grant
- Patent Title: Catalysts for olefin polymerization
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Application No.: US16982006Application Date: 2019-03-18
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Publication No.: US11542346B2Publication Date: 2023-01-03
- Inventor: Vyatcheslav V. Izmer , Dmitry S. Kononovich , Alexander Z. Voskoboynikov , Ville Virkkunen , Luigi Maria Cristoforo Resconi
- Applicant: BOREALIS AG
- Applicant Address: AT Vienna
- Assignee: BOREALIS AG
- Current Assignee: BOREALIS AG
- Current Assignee Address: AT Vienna
- Agency: Meunier Carlin & Curfman LLC
- Priority: EP18162549 20180319
- International Application: PCT/EP2019/056737 WO 20190318
- International Announcement: WO2019/179959 WO 20190926
- Main IPC: C07F17/00
- IPC: C07F17/00 ; C08F4/6592 ; C08F110/06 ; C08F210/06 ; C08F10/06

Abstract:
New bisindenyl ligand complexes and catalysts comprising those complexes. The invention is directed to improving the manufacturing of specific C1-symmetric bisindenyl complexes by modifying one of the indenyl ligands in order to improve the selectivity of the complex synthesis towards the desired anti-isomer, increase the yield and simplify the purification of the complex. The invention also relates to the use of the new bisindenyl metallocene catalysts for the production of polypropylene homopolymers or propylene copolymers.
Public/Granted literature
- US20210017307A1 CATALYSTS FOR OLEFIN POLYMERIZATION Public/Granted day:2021-01-21
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