Catalysts and components of catalysts for polymerizing olefins

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...

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502127, 502123, 502126, 526125, C08F 464

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active

044395400

ABSTRACT:
New components of catalysts for the polymerization of alpha-olefins, e.g., olefins containing three or more carbon atoms, and mixtures thereof with ethylene, are disclosed, said catalysts comprising a Mg dihalide and, chemically fixed thereto, a Ti compound and an electron-donor compound.

REFERENCES:
patent: 3642746 (1972-02-01), Kashiwa et al.
patent: 4143223 (1979-03-01), Toyota et al.
patent: 4187196 (1980-02-01), Giannini et al.
patent: 4226741 (1980-10-01), Luciani et al.

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