Patent ID: 8648019
Filing Date: 2014-02-11
Classification: B01J,B82Y,C10M,C10N

Abstract:
1. A lubricant composition comprising carbon particles suspended in a liquid hydrocarbon carrier; wherein the carbon particles are prepared by heating neat, high or low density polyethylene in a sealed reactor at a temperature in the range of at least about 700° C. and under an autogenic, self generated pressure in the range of about 800 to about 2000 pounds-per-square inch (psi), subsequently cooling the reactor to less than 100° C. and isolating the resulting particulate carbon material from the reactor; wherein the carbon particles are generally spherical in shape, not hollow, and have an average diameter in the range of about 1 to about 5 micrometers; wherein the liquid hydrocarbon carrier comprises a poly(alpha olefin) and the carbon particles are present in the composition at a concentration in the range of about 0.5 to about 1 wt %.