Method of changing melt rheology property of bimodal polyethylene polymer

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United States of America

PATENT NO 12173108
APP PUB NO 20240101725A1
SERIAL NO

17426147

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Abstract

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A method of independently changing a melt rheology property value of a bimodal polyethylene polymer being made using a bimodal catalyst system in a single gas phase polymerization reactor. The method comprises process conditions comprising alkane(s) in the reactor. The method comprises a bimodal catalyst system that is characterized by an inverse response to alkane(s) concentration. The method comprises changing concentration of the alkane(s) in the reactor by an amount sufficient to effect a measurable change in the melt rheology property value; wherein the bimodal catalyst system is characterized by an inverse response to alkane(s) concentration such that when the alkane(s) concentration is increased, the melt rheology property value of the resulting bimodal polyethylene polymer is decreased, and when the alkane(s) concentration is decreased, the melt rheology property value of the resulting bimodal polyethylene polymer is increased.

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Patent Owner(s)

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UNIVATION TECHNOLOGIES LLC5555 SAN FELIPE SUITE 700 HOUSTON TX 77056

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
He, Chuan Dunar, US 143 1886
Liu, Bo Lake Jackson, US 672 3701
Lynn, Timothy R Glen Gardner, US 46 462
Reib, Robert N Hurricane, US 13 20

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