DISPERSANT VISCOSITY MODIFIERS WITH SULFONATE FUNCTIONALITY
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United States of America Patent
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Sep 15, 2015
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Sep 15, 2014
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A lubricating composition includes an oil of lubricating viscosity and an oil-soluble dispersant viscosity modifier, which includes an olefin-based polymer backbone and at least one pendent functional group. Each of the at least one pendent functional group is independently attached to the olefin-based polymer backbone by a linking group. The at least one pendent functional group includes a sulfonate moiety.
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