Solid component of catalyst for the (co) polymerization of ethylene and .alpha.-olefins

   
   

A solid component of catalyst for the (co)polymerization of ethylene and .alpha.-olefins contains magnesium-carboxylate bonds and transition metal-carboxylate and can be represented by the formula: M.sub.1 Mg.sub.(0.3-20) X.sub.(2-60) Al.sub.(0-6) (R--COO).sub.(0.1-3) (I) wherein: M is at least one metal selected from titanium, vanadium, zirconium and hafnium, X is a halogen excluding iodine, and R is an aliphatic, cycloaliphatic or aromatic hydrocarbon radical, containing at least 4 carbon atoms. A description follows of the preparation of a solid component of catalyst (I) and its use in procedures for the (co)polymerization of ethylene and .alpha.-olefins.

Un componente sólido del catalizador para (el co)polymerization del etileno y de los alpha.-alpha.-olefins contiene enlaces del magnesio-magnesium-carboxylate y el metal-metal-carboxylate de la transición y se puede representar por el fórmula: M.sub.1 Mg.sub.(0.3-20) X.sub.(2-60) Al.sub.(0-6) (R -- COO).sub.(0.1-3) (i) en donde: M es por lo menos un metal seleccionado del titanio, del vanadio, del circonio y del hafnium, X es un halógeno excepto el yodo, y R es un radical de la hidrocarburo alifática, cycloaliphatic o aromática, conteniendo por lo menos 4 átomos de carbón. Una descripción sigue de la preparación de un componente sólido del catalizador (i) y de su uso en los procedimientos para (co)polymerization del etileno y de los alpha.-alpha.-olefins.

 
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< Rheology modification of polymers prepared using metallocenes

< High activity carbenium-activated polymerization catalysts

> Process for polymerizing ethylene, higher alpha-olefin comonomer and dienes, especially vinyl norbornene; polymers made using such processes; and articles made from such polymers

> Internal Lewis acid single site catalyst family for polymerization of polar monomers

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