Well defined low molecular weight dispersant polymethacrylates
AssigneesThe Lubrizol Corporation, University of Warwick
InventorsPaul O'Hora, Dixit Parmar, Timothy R. Smith, David M. Haddleton, Georgios Patias
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Abstract
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.
Claims9
A low molecular weight dispersant polymethacrylate polymer (“LMWDPMA”) comprising the reaction product of a vinyl terminated polymethacrylate polymer having a molecular weight of about 1000 to about 5000 Mn and a nitrogen-containing group.
A process for preparing a low molecular weight dispersant polymethacrylate polymer (“LMWDPMA”) comprising 1) preparing a vinyl terminated polymethacrylate polymer by catalytic chain transfer polymerization;
- 2) reacting the vinyl terminated polymethacrylate polymer with a nitrogen-containing group in the presence of microwave radiation.
Dependencies are inferred from the claim text.