PROCESS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYETHYLENE
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United States of America Patent
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Issued Date -
Nov 6, 2014
app pub date -
Dec 19, 2011
filing date -
Dec 19, 2011
priority date (Note) -
Abandoned
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Abstract
In a process for producing polyethylene, ethylene is contacted under polymerization conditions with a slurry of a catalyst composition comprising a particulate support and a Group 4 metal complex of a phenolate ether ligand carried by the support and present in an amount so as to provide about 0.1 to about 35 μιηo of Group 4 metal per gram of the support. The resultant polyethylene has a molecular weight of at least 3×105 g/mol as determined by ASTM 4020, an average particle size, d50, of less 300 microns, preferably about 100 to 250 microns, and a span, log10(d90/d10), of less than 0.4.
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