PRODUCTION OF SUPPORTED CATALYST FOR ETHYLENE POLYMERIZATION AND ETHYLENE/ALFA-OLEFIN COPOLYMERIZATION

PROBLEM TO BE SOLVED: To provide a method for producing a support catalyst for ethylene polymerization and copolymerization of ethylene with α-olefin having low activity at initial stage and gradually increasing activity as polymerization advances and finally having sufficient activity in ethylene p...

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Hauptverfasser:	KANG YOUN-KYUNG, ZAKHAROV VLADIMIR ALEXANDROVICH, NIKITIN VALENTIN EVGENIEVICH, CHANG HO-SIK
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for producing a support catalyst for ethylene polymerization and copolymerization of ethylene with α-olefin having low activity at initial stage and gradually increasing activity as polymerization advances and finally having sufficient activity in ethylene polymerization and ethylene/α- olefin copolymerization enabling production of a polymer having narrow particle size distribution and increased bulk density and carried out by slurry and gaseous polymerization. SOLUTION: This method for producing the subject support catalyst comprises reacting an organomagnesium compound having a composition represented by the formula, MgPh2 .nMgCl2 .mR2 O [Rh is phenyl; (n) is 0.37-0.7; (m)>=1; R2 O is ether] with an organic chlorine compound at -20 deg.C to 80 deg.C in >=0.5 molar ratio of the organic chlorine compound to magnesium and treating the resultant magnesium-containing support with a titanium compound containing oxygen atom.