Process for making propylene homo or copolymers
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United States of America Patent
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Jan 15, 2002
Grant Date -
N/A
app pub date -
Jul 13, 1999
filing date -
Nov 15, 1996
priority date (Note) -
Expired
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Abstract
A process for homo or copolymerizing propylene, wherein propylene is polymerized in the presence of a catalyst at an elevated temperature in a reaction medium, in which a major part is formed by propylene. The polymerization is carried in at least one slurry reactor in the presence of liquid propylene at a temperature between 80.degree. C. and the critical temperature of the reaction medium and a catalyst system producing within said temperature range a high productivity and essentially constant isotacticity within wide melt index range.
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