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NANOSIZED PARTICLES OF MOLYBDENUM SULFIDE AND DERIVATIVES,METHOD FOR ITS PREPARATION AND USES THEREOF AS LUBRICANT ADDITIVE

  • US 20050065044A1
  • Filed: 05/08/2001
  • Published: 03/24/2005
  • Est. Priority Date: 05/08/2001
  • Status: Active Grant
First Claim
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1. A lubricant composition comprising:

  • A) a lubricant, and B) at least one molybdenum-containing compound in the form of surface-capped nanosized particles of the general formula
    (Z)n(X—

    R)m wherein;

    Z is selected from the group consisting of MoS3, MoS2O, Na2MoS4, Na2MoS3O, (NH4)2MoS4, (NH4)2MoS3O, and hydrates thereof in the form of particles having dimensions in the range of from about 1 to about 100 nm;

    (X—

    R) is a surface-capping reagent selected from the group consisting of alkyl amines, dialkyl amines, trialkyl amines, carboxylic acids, dicarboxylic acids, carboxylic acid amides, dicarboxylic acid diamides, alicyclic imides, ammonium or alkali metal dialkyldithiocarbamates, divalent metal bis-dialkyldithiocarbamates, trivalent metal tris-dialkyldithiocarbamates, tetraalkyl thiuram disulfides, and derivatives thereof;

    n is the number of molecules of Z in the particles;

    m is an integer representing the amount of surface-capping, reagents relative to a single particle; and

    the ratio of m to n is in the range of from about 1;

    1 to about 10;

    1.

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