Exxon Chemical Patents, Inc.

Pratima Rangarajan

Charles C Cozewith

William M Davis

Thomas J Pacansky

Gary William Verstrate

A viscosity modifier comprising a low molecular weight block copolymer including A blocks and B blocks, wherein the A blocks comprise at least about 93 wt. % polyethylene and the B blocks comprise a copolymer of between about 40 wt. % to 75 wt. % ethylene and at least one other .alpha.-olefin; wherein the resulting block copolymer has an average ethylene content of between about 60 wt. % to 80 wt. %.

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Schenectady, NY, United States of America

Pratima Rangarajan