High efficiency, high temperature catalyst for polymerizing olefins
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United States of America Patent
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Feb 9, 1982
Issued Date -
N/A
app pub date -
Sep 16, 1980
filing date -
Feb 3, 1977
priority date (Note) -
Expired
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Abstract
Compositions exhibiting high catalytic activity in the polymerization of .alpha.-olefins at temperatures above 140.degree. C. are provided by reacting a transition metal compound such as tetra(isopropoxy)titanium, an organomagnesium component such as a hydrocarbon soluble complex of dialkyl magnesium and an alkyl aluminum, e.g., di-n-butylmagnesium.x triethylaluminum and a hydrogen halide or an active hydrocarbyl halide such as t-butyl chloride. 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.
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