Preparation of MgCl2-supported Ziegler–Natta catalyst systems with new electron donors
VM Maria de Fátima, R da Silva Cardoso… - Applied Catalysis A …, 2010 - Elsevier
VM Maria de Fátima, R da Silva Cardoso, MG da Silva
Applied Catalysis A: General, 2010•ElsevierIn the present work, the effect of new internal and external electron donors for Ziegler–Natta
systems of the type MgCl2/DI/TiCl4/DE/AlR3 was compared with the conventional use of n-
butyl phthalate and dimethoxy-diphenylsilane as electron donors. Catalyst systems
employing various internal and external donors were evaluated in propylene polymerization.
The polymers were characterized by infrared absorption spectroscopy, differential scanning
calorimetry and heptane extraction. The prepared catalysts with the new internal donors …
systems of the type MgCl2/DI/TiCl4/DE/AlR3 was compared with the conventional use of n-
butyl phthalate and dimethoxy-diphenylsilane as electron donors. Catalyst systems
employing various internal and external donors were evaluated in propylene polymerization.
The polymers were characterized by infrared absorption spectroscopy, differential scanning
calorimetry and heptane extraction. The prepared catalysts with the new internal donors …
In the present work, the effect of new internal and external electron donors for Ziegler–Natta systems of the type MgCl2/DI/TiCl4/DE/AlR3 was compared with the conventional use of n-butyl phthalate and dimethoxy-diphenylsilane as electron donors. Catalyst systems employing various internal and external donors were evaluated in propylene polymerization. The polymers were characterized by infrared absorption spectroscopy, differential scanning calorimetry and heptane extraction. The prepared catalysts with the new internal donors produced polypropylene with isotactic index up to 98% under the polymerization conditions employed.
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