Patent ID: 9206377
Filing Date: 2015-12-08
Classification: C10M,C10N

Abstract:
1. A lubricant additive concentrate for enhancing lubricity of a lubricating composition at extreme use conditions, said lubricant additive concentrate consisting essentially of: (a) from about 3% to about 50% of a first stage solid lubricant effective at low temperatures, said first stage solid lubricant having a particle size less than about 30 microns and being molybdenum disulfide; (b) from about 0.3% to about 10% of a second stage medium temperature solid lubricant effective at medium temperatures, said second stage solid lubricant having a particle size less than about 30 microns and being boron nitride; (c) from about 0.6% to about 20% of a third stage high temperature solid lubricant effective at high temperatures and high pressures, said third stage solid lubricant having a particle size less than about 30 microns and being an inorganic fluoride characterized by being capable of forming a bondable substantially homogeneous film on a substrate at elevated temperatures and selected from the group consisting of calcium fluoride, lithium fluoride, magnesium fluoride, and mixtures thereof; and (d) the balance a liquid carrier compatible with a lubricating composition.