JPS5819334B

Polymerization catalysts, particularly catalysts for the polymerization of olefins, are disclosed. The catalysts are prepared by mixing (A) an organometallic compound or hydride of a metal belonging to Groups I to III of the Mendelyeev Periodic Table; with (B) the product obtained by contacting (1)...

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Bibliographische Detailangaben
Hauptverfasser:	ANTONIO RESESE, ETORE GIAKETSUTEI, BERUMORE DAUORI, ERUMANO SUZA, ADORUFUO MAIRU
Format:	Patent
Sprache:	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:	Polymerization catalysts, particularly catalysts for the polymerization of olefins, are disclosed. The catalysts are prepared by mixing (A) an organometallic compound or hydride of a metal belonging to Groups I to III of the Mendelyeev Periodic Table; with (B) the product obtained by contacting (1) an addition product obtained by reacting a di-, tri-, or tetravalent titanium compound with an electron-donor compound, with (2) an anhydrous magnesium halide, in particular anhydrous MgCl2 or MgBr2, which is either preactivated or mixed with the Ti compound under conditions which result in its activation; or by contacting (A) with (B') the product obtained by contacting a di-, tri, or tetravalent Ti compound with an electron-donor compound and a support consisting of an anhydrous Mg halide, in particular MgCl2 or anhydrous MgBr2, which is either preactivated or mixed with the Ti compound and electron-donor under conditions such that the Mg halide is activated.