SILICA-SUPPORTED POLYMERISATION CATALYST

World Intellectual Property Organization Patent

APP PUB NO WO-2004018523-A1
SERIAL NO

PCTGB0303570

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Abstract

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A process for the preparation of a silicon containing transition metal compound comprises the steps of (a) non-hydrolytic sol-gel condensation of a silane of formula LxSiQn wherein L is a π-bonded ligand, Q is an anionic ligand, and x + n = 4 with a halogenated silane (or siloxane) and an alkoxysilane, (b) optionally alkylation, (c) deprotonation and (d) addition of a transition metal compound. The novel process allows for the preparation of transition metal compounds which may suitably be used with cocatalysts for the polymerisation of olefins, in particular for such processes carried out in the gas phase.

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BP CHEM INT LTDGB

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Inventor(s)

Inventor Name Address
MASTROIANNI SERGIO 85 AVENUE DES FRÈRES PERRET 69190 SAINT-FONS 69190
DEFFIEUX ALAIN F-33000 BORDEAUX
DEVER CEDRIC 86022 POITIERS CEDEX
CRAMAIL HENRI SAINTE TERRE

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