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Metal complexes containing a 2,6-diacylpyridine ligand and their use in the polymerization of ethylene
Metal complexes containing a 2,6-diacylpyridine ligand and their use in the polymerization of ethylene
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机译:含有2,6-二酰基吡啶配体的金属配合物及其在乙烯聚合中的应用
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摘要
Organometallic complex having the formula (IAP)M(X)n which can be used for die formation of catalytic systems wherein: M is a metal selected from transition metals and lanthanides, in oxidation state "s" positive and different from zero; each X is independently a group of an anionic nature bound to the metal as an anion in an ionic couple or with a convalent bond of the "sigma" type; "n" expresses the number of X groups sufficient for neutralizing the formal "+s" charge of the metal M, and (IAP) represents a neutral bond consisting of a mono-imine of 2,6-diacylpyridine. Said complex is prepared with relatively simple methods and can be used, combined with a suitable co-catalyst, such as for example, an aluminoxane, as a catalyst in normal (co)polymerization processes of alpha-olefins, and especially ethylene.
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