[EN] METHOD FOR SYNTHESIS OF MONOCYCLOPENTADIENYL COMPLEXES OF ZIRCONIUM AND HAFNIUM [FR] PROCÉDÉ POUR LA SYNTHÈSE DE COMPLEXES DE MONOCYCLOPENTADIÉNYLE DE ZIRCONIUM ET D'HAFNIUM
Polymerization catalysts and process for producing bimodal polymers in a single reactor
申请人:Jayaratne C. Kumudini
公开号:US20080004460A1
公开(公告)日:2008-01-03
Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.
[EN] METHOD FOR SYNTHESIS OF MONOCYCLOPENTADIENYL COMPLEXES OF ZIRCONIUM AND HAFNIUM<br/>[FR] PROCÉDÉ POUR LA SYNTHÈSE DE COMPLEXES DE MONOCYCLOPENTADIÉNYLE DE ZIRCONIUM ET D'HAFNIUM
申请人:UNIVATION TECH LLC
公开号:WO2016168448A1
公开(公告)日:2016-10-20
Catalyst systems and methods for making and using the same are disclosed. In an example, a method of synthesizing a monocyclopentadienyl compound is provided. The method includes melting a dicyclopentadienyl compound including the following structure: (A). As used herein, M is hafnium or zirconium. Each R is independently an H, a hydrocarbyl group, a substituted hydrocarbyl group, a heteroatom group. Each X is a leaving group selected from a halogen or a heteroatom group. A reaction melt is formed by adding a metal salt including the following structure: (B). A monocyclopentadienyl compound is deposited from a vapor formed over the reaction melt, wherein the monocyclopentadienyl compound includes the following structure: (C).