A PROCESS FOR THE SYNTHESIS OF ALPHA-OLEFIN POLYMERIZATION PROCATALYSTS
申请人:Reliance Industries Limited
公开号:EP2257576B1
公开(公告)日:2013-02-20
AN IMPROVED MAGNESIUM DICHLORIDE SUPPORTED TITANIUM CATALYST COMPOSITION FOR POLYOLEFIN POLYMERIZATION
申请人:Reliance Industries Limited
公开号:EP2958950A2
公开(公告)日:2015-12-30
PROCESS FOR THE SYNTHESIS OF ALPHA-OLEFIN POLYMERIZATION PROCATALYSTS
申请人:Gupta Virendrakumar
公开号:US20110015355A1
公开(公告)日:2011-01-20
The invention relates to a process for the synthesis of a Ziegler Natta procatalyst, the process comprising first treating magnesium alkoxide with a twice used mixed solvent of TiCl
4
and chloro benzene to form a first stage product, then treating the first stage product with a once used mixed solvent of TiCl
4
and chlorobenzene to form a second stage product and finally treating the second stage product with mixed solvent recovered by treatment of effluent from the first treatment with benzoyl chloride so as to convert contaminant of formula TiCl
3
OR in the effluent to an addition complex which is precipitated, filtered off and hydrolyzed to recover ethyl benzoate and to form Ti(OH)
4
as a side product, the product after final treatment being subjected to a plurality of successive washing steps with used as well as recovered hexane.
Magnesium Dichloride Supported Titanium Catalyst Composition for Polyolefin Polymerization
申请人:Reliance Industries Limited
公开号:US20160002372A1
公开(公告)日:2016-01-07
In the present disclosure, a Ziegler-Natta catalyst composition for the polymerization of olefin monomers to produce polyolefin with controlled molecular weight distribution is provided wherein said controlled molecular weight distribution ranges from narrow to broad. The desired control over the molecular weight distribution of polyolefin is accomplished by using a Ziegler-Natta catalyst composition having enhanced self-extinguishing property. In the Zeigler-Natta catalyst composition of the present disclosure, in addition to a titanium and magnesium containing pro-catalyst component, a mixture of tri-alkyl aluminum compounds as a co-catalyst mixture is used. The particular combination of tri-alkyl aluminum compounds in a pre-determined weight proportion provides desirable control over the molecular weight distribution of polyolefin.