PROCEDE POUR LA PREPARATION D'UN CATALYSEUR A BASE DE ZIRCONIUM OU D'HAFNIUM ET PROCEDE DE POLYMERISATION OU DE COPOLYMERISATION DE COMPOSE INSATURE UTILISANT CE CATALYSEUR

A catalyst comprising zirconium and/or hafnium is prepared by the following steps: (a) vaporization in vacuo of magnesium and reaction of the thus obtained vapour with a compound of quadrivalent titanium in the presence of a halogen donor and of a compound of zirconium and/or hafnium; (b) thermal tr...

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Hauptverfasser:	ANGELO MOALLI, MARGHERITA CORBELLINI
Format:	Patent
Sprache:	fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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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