Propylene-based polymer with reduced high-molecular weight portion
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United States of America Patent
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Mar 6, 2018
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app pub date -
Nov 14, 2014
filing date -
Nov 15, 2013
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Abstract
The present disclosure provides a process for producing propylene-based polymer. The process includes contacting, under polymerization conditions in a gas phase polymerization reactor, propylene monomer and optionally one or more comonomers with a Ziegler-Natta catalyst composition. The process includes maintaining the temperature of a reaction zone of the reactor at a temperature from greater than 72° C. to less than or equal to 85° C., and forming a propylene-based polymer having a molecular weight (Mw) greater than 100,000, and a Mz+1/Mz less than 2.20. The resultant propylene-based polymer is advantageous in fiber applications.
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