Hyperpure propylene polymer
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United States of America Patent
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Sep 17, 1996
Grant Date -
N/A
app pub date -
Mar 26, 1991
filing date -
Mar 30, 1990
priority date (Note) -
Expired
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Abstract
A process for preparing hyperpure propylene (co)polymers comprising polymerizing the monomer(s) in liquid monomer in the presence of a catalyst obtained by reacting an Al-trialkyl compound with a solid catalyst component comprising magnesium dihalide in active form, having supported thereon a titanium chloride or chloroalcoholate, and an ether having the general formula: ##STR1## where R and R' are the same or different and are C.sub.2-18 alkyl, C.sub.3-18 cycloalkyl, C.sub.6-18 aryl, C.sub.7-18 arylalkyl or alkylaryl radicals.
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