The Lubrizol Corporation

University of Warwick

Paul Simon O'Hora

Timothy R Smith

William R S Barton

David Mark Haddleton

David M Nickerson

Edward P Sampler

Eugene Pashkovski

Dixit Parmar

Reid A Patterson

Sona Sivakova

Georgios Patias

Kieran Trickett

The present invention provides, among other things, a process to produce a low molecular weight dispersant polymethacrylate polymer ('LMWDPMA'), and the LMWDPMA itself, along with the use of the LMWDPMA in a lubricating composition, as well as a method for lubricating an internal combustion engine as disclosed herein.

Well defined low molecular weight dispersant polymethacrylates

The invention provides a lubricating composition comprising an oil of lubricating viscosity and synergistic mixture of a functionalized ethylene-&#x3b1;-olefin copolymer, a poly(meth)acrylate block polymer having a substantially oil soluble block and a substantially oil insoluble block. The invention also provides a method of lubricating a mechanical device using such a lubricating composition.

Lubricating composition containing a self-assembling polymethacrylate block copolymer and an ethylene-&#x3b1;-olefin copolymer

A lubricant composition of an oil of lubricating viscosity, a grafted copolymer viscosity modifier that is an ashless condensation reaction product of an olefin polymer, having a number average molecular weight of about 1000 to about 10,000, comprising carboxylic acid or equivalent functionality grafted onto the polymer backbone, with a monoamine or a polyamine often having a single primary amino group, which exhibits good dispersancy and viscometric performance in a driveline device.

Nitrogen-functionalized olefin polymers for driveline lubricants

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Belper, United Kingdom

Paul Simon O'Hora