Phase change material compositions and methods for using the compositions to prepare substrate coatings or bulk blended polymers that advantageously lower friction between interacting substrate surfaces and lower substrate surface wear.

The disclosure relates to a lubricating composition consisting essentially of a decarboxylated rosin acid (DCR), a base oil, and optional additives, and methods for using same. The decarboxylated rosin acid has a density of 0.9 to 1.0 g/cm3 at 20? C., a viscosity of 15 to 60 cSt at 40? C., and an acid value of <50 mg KOH/g. The lubricating compositions containing the DCR is characterized as having improved anti-wear and friction reducing properties, as well as improved electrical properties, and cooling performance for use in electric and hybrid vehicles. In embodiments, the lubricating composition exhibits a wear scar diameter of <350 ?m, according to ASTM D6079.

The disclosure relates to a lubricating composition consisting essentially of a decarboxylated rosin acid (DCR), a base oil, and optional additives, and methods for using same. The decarboxylated rosin acid has a density of 0.9 to 1.0 g/cm3 at 20? C., a viscosity of 15 to 60 cSt at 40? C., and an acid value of <50 mg KOH/g. The lubricating compositions containing the DCR is characterized as having improved anti-wear and friction reducing properties, as well as improved electrical properties, and cooling performance for use in electric and hybrid vehicles. In embodiments, the lubricating composition exhibits a wear scar diameter of <350 ?m, according to ASTM D6079.

A block copolymer comprising a PAO block derived from alpha-olefin monomer(s) having a carbon backbone comprising more than six (6) carbon atoms per molecule and a poly(alkyl methacrylate) block derived from alkyl methacrylate monomer(s) having an alkyl group comprising at least six (6) carbon atoms forms micelles in hydrocarbon solvents and lubricant oil base stocks with large space volume even at low overall molecular weight. The block copolymer of this disclosure is particularly advantageous as viscosity modifier for lubricant oil compositions.

This invention relates to malienated derivatives made from maleic anhydride, functionalized monomers, and one or more additional reagents, e.g., an oxygen-containing reagent (e.g., alcohol, polyol), a nitrogen-containing reagent (e.g., amine, polyamine, aminoalcohol), a metal and/or a metal compound. The invention relates to lubricants, functional fluids, fuels, dispersants, detergents and functional compositions (e.g., cleaning solutions, food compositions, etc.)

A lubricating oil friction modifier and a preparation method therefor and use thereof are provided. The lubricating oil friction modifier has a chemical formula of A.sub.xB.sup.y+(C.sup.?).sub.y. In the formula, A is a perfluoropolyether acyl group, B.sup.y+ represents a cationic group having x amino groups and y ammonium ions, C.sup.? is BF.sub.4.sup.?, PF.sub.6.sup.?, AsF.sub.6.sup.?, FAP.sup.?, TFSI.sup.?, Mn.sub.2O.sub.4 or ClO.sub.4.sup.?, x is an integer greater than or equal to 1, y is an integer greater than or equal to 1, and x+y?2. The lubricating oil friction modifier has a good solubility with fluorine oil and fluorine grease, will not precipitate in the fluorine oil and the fluorine grease after being added, and can significantly improve the wear resistance of a lubricating oil such as the fluorine oil and the fluorine grease.

Friction-reducing compositions useful for reducing Operating Torque in a drilling operation are described. Methods of conducting drilling operations using such friction-reducing compositions and lubricant compositions formed from blends of the friction-reducing composition with an oil-based mud composition are also described.

Friction-reducing compositions useful for reducing Operating Torque in a drilling operation are described. Methods of conducting drilling operations using such friction-reducing compositions and lubricant compositions formed from blends of the friction-reducing composition with an oil-based mud composition are also described.

The present disclosure concerns engine lubricant compositions including at least one base oil, at least one viscosity index improver polymer and at least one polyalkylene glycol, obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, including at least one butylene oxide, the quantity of polyalkylene glycol being from 1 to 28% by mass with respect to the total mass of lubricant composition. Using at least one polyalkylene glycol, obtained by polymerization or copolymerization of alkylene oxides including from 3 to 8 carbon atoms, further including at least one butylene oxide in a base oil improves engine cleanliness while not increasing, or indeed while decreasing, the consumption of petrol or diesel fuels by the engine.

The present disclosure concerns engine lubricant compositions including at least one base oil, at least one viscosity index improver polymer and at least one polyalkylene glycol, obtained by polymerization or copolymerization of alkylene oxides comprising from 3 to 8 carbon atoms, including at least one butylene oxide, the quantity of polyalkylene glycol being from 1 to 28% by mass with respect to the total mass of lubricant composition. Using at least one polyalkylene glycol, obtained by polymerization or copolymerization of alkylene oxides including from 3 to 8 carbon atoms, further including at least one butylene oxide in a base oil improves engine cleanliness while not increasing, or indeed while decreasing, the consumption of petrol or diesel fuels by the engine.