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Transition And Organic Metals Composition Catalysts For Addition Polymerization
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Abstract
A process for the production of EPRs comprising contacting ethylene, propylene, and, optionally, a diene, under polymerization conditions, with a catalyst system comprising: (A) a catalyst precursor comprising: a vanadium compound; a modifier; and a support, in which the catalyst precursor has been pre-oxidized with an oxidant in an amount sufficient to increase the oxidation state of the vanadium by at least one; (B) a cocatalyst; and (C) optionally, a promoter.
TW083106326A1993-06-281994-07-12Process for the production of ethylene/propylene copolymer rubbers
TW332208B
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