Ethylene-based copolymers, lubricating oil compositions containing the same, and methods for making them
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United States of America Patent
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Nov 3, 2015
Grant Date -
Oct 24, 2013
app pub date -
Oct 12, 2012
filing date -
Apr 28, 2009
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Abstract
Provided are ethylene-based copolymers, methods of preparing the same, lubricating oil compositions including the same, methods for preparing such lubricating oil compositions, and end uses for such ethylene-based copolymers and lubricating oil compositions. The ethylene-based copolymers may include from about 35 wt. % to about 60 wt. % of units derived from ethylene and at least 1.0 wt. % of one or more alpha-olefin comonomers having 3 to 20 carbon atoms. The ethylene-based copolymers are substantially amorphous and have a polydispersity index of about 2.8 or less.
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