PREPARATION OF POLYETHYLENE

PURPOSE:To prepare PE in a very high polymer yield and in a wide MW distribution, by polymerizing ethylene in the presence of a catalyst consisting of a specified transition metal compound carrier and a specified organoaluminum compound with the addition of a chlorinated hydrocarbon. CONSTITUTION:Et...

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Bibliographische Detailangaben
Hauptverfasser:	MASUDA JUN, HAMAZAKI TADAMITSU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOSITIONS BASED THEREON GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To prepare PE in a very high polymer yield and in a wide MW distribution, by polymerizing ethylene in the presence of a catalyst consisting of a specified transition metal compound carrier and a specified organoaluminum compound with the addition of a chlorinated hydrocarbon. CONSTITUTION:Ethylene is homopolymerized or copolymerized with other alpha- olefins in the presence of an inert solvent, by the use of a catalyst consisting of a solid transition metal compound carrier A, which is prepared in two steps in which a solid product obtained by reacting a trivalent metal halide with a hydrate of a divalent metal hydroxide, oxide or carbonate, or a double salt containing these or a divalent metal compound is reacted with a group IVa or Va transition metal containing a halogen in the presence of an electron donor compound [e.g. polysiloxane of the formula (where R1 and R2 are each a residue capable of bonding with Si; 3