US 9,809,777 B2
Process for producing lubricants containing nanoparticles
Gary A. Pozarnsky, Roseville, MN (US)
Assigned to Applied Colloids, Inc, Roseville, MN (US)
Filed by Gary A. Pozarnsky, Roseville, MN (US)
Filed on May 6, 2015, as Appl. No. 14/705,934.
Prior Publication US 2016/0326449 A1, Nov. 10, 2016
Int. Cl. B22F 9/06 (2006.01); C10M 125/04 (2006.01); C10M 177/00 (2006.01); B22F 9/08 (2006.01)
CPC C10M 125/04 (2013.01) [C10M 177/00 (2013.01); B22F 2009/0864 (2013.01); C10N 2210/05 (2013.01); C10N 2220/082 (2013.01); C10N 2230/06 (2013.01); C10N 2250/10 (2013.01)] 11 Claims
 
1. A process for preparing a lubricant having coefficient of friction properties, which lubricant is prepared in a system comprised of a heating zone, a lubricant contacting zone, and a collecting zone, wherein all zones are under a vacuum, which process comprising:
a) placing a sample of elemental metal having a melting point less than 400° C. in a heating zone capable of being heated to a temperature of up to about 2000° C.;
b) heating said sample of elemental metal to a temperature between about 900° C. and 1800° C. thereby causing at least a fraction of the elemental metal to melt and evaporate resulting in the formation of metal nanoparticles, metal nanodroplets or both;
c) passing a stream of inert gas through the heating zone so that it passes over the evaporating metal sample and forms a mixture of inert gas and metal nanoparticles, metal nanodroplets, or both;
d) conducting said mixture of inert gas and metal nanoparticles, metal nanodroplets, or both to a lubricant contacting zone wherein the mixture of inert gas and metal nanoparticles, metal nanodroplets, or both come into intimate contact with a mist of lubricant thereby quenching said metal nanoparticles and metal nanodroplets to nanoparticles, thereby resulting in a mixture of inert gas and said lubricant having dispersed therein quenched metal nanoparticles; and
e) conducting said mixture of inert gas and said lubricant having dispersed therein quenched metal nanoparticles to a collection zone wherein the inert gas is separated from a dispersion of quenched metal nanoparticles in lubricant.