Invention Grant
- Patent Title: Sterically demanding dialkokxydialkylsilanes as external donors for Ziegler catalysts for the polymerization of propylene
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Application No.: US14411061Application Date: 2013-06-14
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Publication No.: US09725536B2Publication Date: 2017-08-08
- Inventor: Stefan Nogai , Andreas Winter , Yvonne Denkwitz , Oliver Schuster
- Applicant: Lummus Novolen Technology GmbH
- Applicant Address: DE Mannheim
- Assignee: Lummus Novolen Technology GmbH
- Current Assignee: Lummus Novolen Technology GmbH
- Current Assignee Address: DE Mannheim
- Agency: Osha Liang LLP
- Priority: EP12174212 20120628
- International Application: PCT/EP2013/062433 WO 20130614
- International Announcement: WO2014/001108 WO 20140103
- Main IPC: C08F110/06
- IPC: C08F110/06 ; C08F10/06
Abstract:
A process for the polymerization of propylene is disclosed. The process may include contacting, in a gas phase polymerization reactor, propylene and optionally one or more comonomers with a catalyst system comprising a Ziegler-Natta catalyst and an external electron donor system comprising di(bicyclo[2.2.1]heptan-2-yl)dimethoxysilane.
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