A continuous process for producing a polyurea concentrate or powder. The process includes combing at least one amine and an isocayante in the presence of a liquid diluent or a base oil in a rotor stator mixer. The concentrate comprises a polyurea in a base oil wherein the concentration of from about 20 weight percent to about 50, or 40 or 35 or 30 weight percent of polyurea based on total weight of grease thickener. The powder has particle size of 2 to 400 microns. This concentrate or powder can then be formulated by grease manufacturers to the desired final properties without the need for handling of the isocyanate and amine raw materials.

The invention relates to a composition comprising a) at least one N-methyl-N-acylglucamine of formula (I), wherein R.sup.1 represents a linear or branched, saturated or unsaturated hydrocarbon chain with 7 to 21 carbon atoms, one or more organic acids of formula (II) and/or the salts thereof, R.sup.2—COOM, wherein R.sup.2 represents a linear or branched alkyl group or a linear or branched mono- or poly-unsaturated alkenyl group with 5 to 29 carbon atoms, and M represents hydrogen or one or more cations, wherein the cations are present in charge-equalizing amounts, and c) one or more alkanolamines of formula (III), wherein NR.sup.1R.sup.2R.sup.3R.sup.1, R.sup.2 and R.sup.3 represent hydrogen, a linear or branched alkyl group with 1 to 4 carbon atoms, a cycloalkyl group with 5 to 7 carbon atoms, a linear or branched hydroxyalkyl group with 2 to 5 carbon atoms and 1 or 2 hydroxy groups or a hydroxyether group with 2 to 6 carbon atoms, with the provision that at least one of the groups is a hydroxyalkyl group or a hydroxyether group.

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The present technology includes an extreme pressure additive package formulated with a biodegradable sulfur component, which additive package can achieve suitable extreme pressure performance when formulated into a fully formulated industrial gear oil lubricant.

A drag reducing composition comprises a sealed temporary container; and a drag reducing agent and up to 20 weight percent of a dispersing fluid disposed in the sealed temporary container. The drag reducing agent comprises polyolefin particles having a particle size of about 10 to about 2,000 microns; and the dispersing fluid comprising water, an alcohol, a hydrocarbon, or a combination comprising at least one of the foregoing.

Use of a guanidinium-based ionic liquid as detergent in a lubricant composition, notably for lubricating marine engines. A lubricant composition including a guanidinium-based ionic liquid.

A high-molecular-weight compound having a plurality of polymer chains linked through a divalent or higher-valent linking group, in which the divalent or higher-valent linking group has a thiol group and at least one of a thioether structure and a thiourethane structure, and a ratio of an absolute weight-average molecular weight to a relative weight-average molecular weight (absolute Mw/relative Mw) of the high-molecular-weight compound is 1.25 or more; and a method for producing the same are provided.

The present invention provides an organophosphorus compound, a preparation process and use thereof. The organophosphorus compound of the present invention has a structure as represented by the general formula (I):

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The groups are defined in the description. The organophosphorus compound of the present invention has prominent bearing capacity and excellent antiwear and antifriction performances, and can be used as an extreme pressure antiwear additive and used in lubricating oil and lubricating grease.

A lubricating oil composition including: a lubricant base oil; (A) a calcium salicylate detergent in an amount of 0.005 to 0.03 mass % in terms of calcium on the basis of the total mass of the composition; and (B) a phosphite ester compound represented by the following general formula (1) in an amount of 0.01 to 0.06 mass % in terms of phosphorus on the basis of the total mass of the composition:

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wherein in the general formula (1), R.sup.1 and R.sup.2 are each independently a C5-20 group represented by the following general formula (2):

##STR00002##

wherein in the general formula (2), R.sup.3 is a C2-17 linear chain hydrocarbon group, and R.sup.4 is a C3-17 linear chain hydrocarbon group, and X.sup.1 is an oxygen atom or a sulfur atom.

An engine oil additive includes carbon nanotubes and boron nitride particulates dispersed within a fluid. The additive is configured to be mixed with a quantity of oil such that the quantity of oil has a concentration from 0.05 to 0.5 grams of carbon nanotubes and of boron nitride particulates per quart of oil to improve the lubricity of the oil. The additive improves the horsepower and torque of the engine while reducing fuel consumption. The carbon nanotubes have an —OH functionalized exterior surface. The carbon nanotubes have a diameter from 1 nanometer to 50 nanometers and have a length from 1 micron to 1000 microns. The boron nitride particulates are hex-boron nitride structures having an average size from 30 nanometers to 500 nanometers.

A lubricating oil composition for automotive transmissions is disclosed. It offers an automotive transmission (especially a fuel-saving type) which satisfies all requirements as regards the properties of resistance to churning, maintenance of the oil film and low-temperature viscosity. It comprises a GTL low viscosity base oil and a Group 1 high viscosity base oil.