High efficiency catalyst for polymerizing olefins

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

1981-11-12

1983-04-12

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252429C, 252431R, 526125, 526119, C08F 464

Patent

active

043797601

ABSTRACT:
Compositions exhibiting high catalytic activity in the polymerization of .alpha.-olefins are prepared by reacting a mixture of a tetrahydrocarbyloxy titanium compound such as tetraisopropyl titanate and a hydrocarbyloxy titanium oxide such as di(isopropoxy) titanium oxide, an organomagnesium component such as a hydrocarbon soluble complex of dialkyl magnesium and an organoaluminum compound such as triethyl aluminum and a halide source such as ethyl aluminum dichloride. 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 either of the titanium compounds alone.

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L. Petkov, R. Kyrtcheva, Ph. Radenkov and D. Dobreva, Rev. 1-3-78, Organometallics in ethylene polymerization with a catalyst system TiCl.sub.4 /Al(C.sub.2 H.sub.5)Cl/Mg(C.sub.6 H.sub.5).sub.2 :1. Suspension polymerization process; Polymer, vol. 19, May 1988, pp. 567-569.

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