Catalyst compositions comprising support materials having an improved particle-size distribution
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United States of America Patent
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Jan 21, 2014
Grant Date -
Jul 28, 2011
app pub date -
Apr 4, 2011
filing date -
Sep 1, 2005
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Abstract
A catalyst composition that includes a support material having an improved particle-size distribution is provided. Processes for producing polyolefin composition also are provided. Polymers and films also are provided. An example of a catalyst composition is a supported multi-transition-metal catalyst composition that includes: (a) at least two catalyst components selected from the group consisting of: a nonmetallocene catalyst component and a metallocene catalyst component; (b) a support material that has a D50 of less than about 30 microns and a particle size distribution having a D90/D10 ratio of less than about 6; and (c) an activator.
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