Polymerization catalyst system utilizing external donor systems and processes of forming polymers therewith

External donor systems, catalyst systems and olefin polymerization processes are described herein. The external donor systems generally include a first external donor represented by the general formula SiR m(OR )4-m, wherein each R is independently selected from alkyls, cycloalkyls, aryls and vinyls...

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Bibliographische Detailangaben
Hauptverfasser:	BLACKMON KENNETH, MALBARI SHABBIR
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	External donor systems, catalyst systems and olefin polymerization processes are described herein. The external donor systems generally include a first external donor represented by the general formula SiR m(OR )4-m, wherein each R is independently selected from alkyls, cycloalkyls, aryls and vinyls, each R is independently selected from alkyls and m is from 0 to 4. The external donor systems further include a second external donor represented by the general formula SiR m(OR )4-m, wherein each R is independently selected from alkyls, cycloalkyls, aryls and vinyls, each R isindependently selected from alkyls, m is from 0 to 4 and at least one R is a C3 or greater alkyl.