Process for making MVTR resin
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 24, 2003
Grant Date -
N/A
app pub date -
Mar 15, 2001
filing date -
Mar 20, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention is directed to producing a resin which, when formed into a film, has excellent gas barrier and/or moisture barrier (low MVTR) properties. Further, the resin has a relatively high molecular weight distribution, preferably above 6, and has excellent processability/extrudability. The resin is produced using a cyclopentadienyl chromium compound, preferably a mono CpCr compound, on a support, preferably a silica support. A particularly preferred catalyst for use in the present invention comprises pentamethylcyclopentadienyidimethylchromiumpyridine. Preferably, the catalyst is used in a slurry polymerization process.
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