High efficiency catalyst for polymerizing olefins

Details High efficiency catalyst for polymerizing olefins High efficiency catalyst for polymerizing olefins

1979-04-09

1980-09-23

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

526150, 526151, C08F 458, C08F 464

Patent

active

042241863

ABSTRACT:
Compositions exhibiting high catalytic activity in the polymerization of .alpha.-olefins, particularly higher olefins, are prepared by reacting (A) tetravalent titanium compounds such as titanium tetraalkoxide, (B) an organoaluminum compound, (C) an organomagnesium component such as a hydrocarbon soluble complex of dialkyl magnesium and an organo aluminum compound such as triethyl aluminum and, (D) as a halide source, a tetravalent tin compound such as tin tetrachloride. Polymerization processes employing this catalyst composition do not require conventional catalyst removal steps in order to provide polymers having suitable color and other physical characteristics and these catalysts provide higher efficiencies than those catalysts employing HCl as the halide source.

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