Abstract: An aqueous top of rail lubricant comprises a synthetic lubricant, a synthetic thickener, propylene glycol and ethanol. The lubricating composition is consumed in 5 to 15 minutes in the heat generated by a passing train. The lubricant is environmentally innocuous.

Abstract: An improvement has been found in a continuous grease process. A saponification reaction product is continuously recycled through both a shear valve and a heat exchanger to produce a dehydrated grease of uniform consistency and temperature. Both recycle loops are controlled by means of a single shear valve.

Abstract: Railroad wheel flange lubricating is carried out with a lubricating composition which is particularly useful in a locomotive-mounted applicator. The water base lubricant comprises a compatible blend of two polyoxyalkylene glycols, one a synthetic lubricant and the other a synthetic thickener. The lubricating composition is persistent and environmentally innocuous.

Abstract: A high temperature multipurpose grease is prepared from the lithium soap of a C.sub.12 to C.sub.24 hydroxy fatty acid, (e.g. 12-hydroxy stearic acid) and a dilithium soap of a C.sub.4 to C.sub.12 dicarboxylic acid, (e.g. dilithium azelate) wherein the acid mole ratios range from 3:1 to 0.5:1 respectively under carefully controlled processing conditions including controlled alkali addition and one step heating.

Abstract: An experimental grease has been formulated with 8.5 wt % lithium 12-hydroxystearate in a base oil containing an additive composition of a synergistic blend of zinc dialkyldithiophosphates, zinc diamyldithiocarbamate, aromatic amine phosphate, sulfurized sperm oil substitute and the reaction product of coconut oil and diethanolamine.The lithium 12-hydroxystearate grease has been prepared by a standard kettle procedure. The grease composition exhibits a dropping point in the range expected of a lithium complex grease. The grease keeps its soap fiber structure intact at 390.degree. to 400.degree. F., typical of the melting range of lithium 12-hydroxystearate greases.The grease is useful for its long life in constant velocity joints.

Abstract: Lithium complex grease compositions which contain a certain weight ratio of calcium acetate are provided which demonstrate a constant viscosity over a wide temperature range.

Abstract: A high temperature multipurpose grease is prepared from the lithium soap of a C.sub.12 to C.sub.24 hydroxy fatty acid, (e.g. 12-hydroxy stearic acid) and a dilithium soap of a C.sub.4 to C.sub.12 dicarboxylic acid, (e.g. dilithium azelate) wherein the acid mole ratios range from 3:1 to 0.5:1 respectively under carefully controlled processing conditions including controlled alkali addition and one step heating.

Abstract: A continuous process for manufacture of soap thickened grease compositions where a saponifiable material and a metal base are continuously introduced at an elevated temperature into a saponification zone maintained at superatmospheric pressure and saponified under turbulent conditions, wherein the saponified product is mixed with an aqueous solution of oil-insoluble additive materials at a superatmospheric pressure sufficient for maintaining all water in the liquid phase, wherein the saponified material-additive mixture is heated to an elevated temperature of at least 350.degree. F.

Abstract: A process for manufacturing high dropping point aluminum complex soap thickened greases having selected consistency, water resistance, rheopectic properties, and antiwear properties.

Abstract: A grease may be made having synergistic extreme pressure properties using a major amount of a base oil and a thickener and a minor amount of low density polyethylene and known extreme pressure enhancing additives.