Nickel catalyst active in ethylene homo and copolymerization
AssigneeEnichem S.p.A.
InventorsGiuseppe Braca, Anna M. Raspolli Galletti, Stefano Pinori, Glauco Sbrana
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Abstract
A catalyst active in the preparation of ethylene homo and copolymers consists of a nickel complex bound to a polystyrene support and definable by the general formula (I): ##STR1## in which Ph, m and n have the meaning given in the description. The catalyst preparation and its use in ethylene polymerization and ethylene copolymerization with other unsaturated monomers are described.
Claims8
A nickel complex catalyst bound to a polystyrene support, which is active in ethylene homopolymerization or ethylene copolymerization with another unsaturated monomer, having n unsubstituted styrene monomer units and m substituted styrene monomer units, the substituted styrene monomer units defined by the formula:
- ##STR11## in which Ph is phenyl, and m and n are numbers dependent on the molecular weight of the polystyrene, the ratio n/m being between 1/1 and 100/1.
Dependencies are inferred from the claim text.