Control of resin properties
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United States of America Patent
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Jan 25, 2005
Grant Date -
Apr 1, 2004
app pub date -
Sep 27, 2002
filing date -
Sep 27, 2002
priority date (Note) -
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Abstract
A method for controlling resin properties during the production of polyolefins is provided. The method utilizes coordinated manipulation of reaction temperature in combination with a secondary process variable to control resin flow properties to rapidly respond to manufacturing upsets or specification changes to minimize off-grade or transition polymer material when moving from one polymer grade to another, or during a disturbance in a steady state production.
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