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Reduced friction lubricating oils containing functionalized carbon nanomaterials

  • US 8,435,931 B2
  • Filed: 07/13/2010
  • Issued: 05/07/2013
  • Est. Priority Date: 07/17/2009
  • Status: Expired due to Fees
First Claim
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1. A method for reducing the friction of a lubricating oil comprising a base stock or base oil by dissolving in the base stock or base oil from 10 ppm to 10 wt % of a functionalized carbon nanostructure material which functionalized carbon nanostructure material is made by a process comprising:

  • (1) suspending a carbon nanostructure material in a chlorinated benzene solvent; and

    (2) adding to the suspension of (1), in at least 2 additions over a reaction time ranging from 2 days to 4 days between each addition, materials of the formula;

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