Provided are a pressure medium oil, containing a Group-14 element-containing organic compound selected from an organic germanium compound, an organic tin compound, and an organic lead compound, and a method for using a pressure medium oil, which includes applying a pressure to a substance via the pressure medium oil. The pressure medium oil does not solidify even under an ultrahigh pressure of more than 3.7 GPa at room temperature (25° C.) and has a low pour point, and hardly dissolves a conductive paste.

The present invention provides a novel surface-modified inorganic substance obtained by modifying the surface of an inorganic nitride or an inorganic oxide with a boronic acid compound, and a heat dissipation material, a thermally conductive material, and a lubricant which use the surface-modified inorganic substance. The present invention also provides a method for manufacturing the surface-modified inorganic substance, and provides, as a novel method for modifying the surface of an inorganic substance selected from an inorganic oxide and an inorganic nitride with an organic substance, a method for modifying the surface of an inorganic nitride or an inorganic oxide with an organic substance that includes making a contact between the inorganic nitride or the inorganic oxide with a boronic acid compound.

In relation to the NAO friction material free of copper component, this invention is to provide the friction material that prevents the occurrence of metal catch while securing sufficient wear resistance. In the friction material manufactured by forming the NAO friction material composition which is free of copper component, the above-described friction material composition does not contain metal simple substance or alloy and contains, as the lubricant, metal sulfide having 600 centigrade or higher decomposition temperature to be decomposed into metal and sulfur, 2.0-5.0 weight % of graphite and a zirconium silicate as an abrasive material. Here, the metal sulfide is not a molybdenum disulfide or a tungsten disulfide. Especially, the content of the metal sulfide is preferably 0.5-2.0 weight % relative to the total amount of the friction material composition.

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.)

Provided are: a solid lubricant having a low friction coefficient and excellent abrasion resistance; and a sliding member having this solid lubricant embedded therein. The solid lubricant (4) has a sea-island structure, comprising: a sea phase as a continuous phase, containing a hydrocarbon-based wax and a polyethylene resin; and an island phase as a dispersion phase, containing a low-molecular weight tetrafluoroethylene resin, a higher fatty acid salt, a phosphate of basic nitrogen-containing compound, and zinc stannate. A high-molecular weight tetrafluoroethylene resin is contained in this continuous-phase sea phase in a fibrous and mesh state. The hydrocarbon-based wax content is 30-60 vol %, the polyethylene resin content is 3-10 vol %, the low-molecular weight tetrafluoroethylene resin content is 10-30% vol %, the higher fatty acid salt content is 20-40% vol %, the basic nitrogen-containing compound phosphate content is 0.5-5 vol %, the zinc stannate content is 0.5-5 vol %, and the high-molecular weight tetrafluoroethylene resin content is 1-10 vol %.

The invention relates to polymeric-inorganic nanoparticle compositions and preparation processes thereof. The invention also relates to an additive and lubricant compositions comprising these polymeric-inorganic nanoparticle compositions, as well as to the use of these polymeric-inorganic nanoparticle compositions in an oil lubricant formulation to improve tribological performance, in particular to improve extreme pressure performance and friction reduction on metal parts.

A lubricating oil composition, and a method of reducing LSPI events employing the lubricating oil composition, including a base oil of lubricating viscosity, and an additive composition including: one or more overbased calcium-containing detergent(s) sufficient to provide at least 500 ppmw of calcium, and a zirconium-containing nanoparticle(s) and/or one or more zirconium-containing compound(s) sufficient to provide greater than 0 ppmw to 6000 ppmw of zirconium, wherein the nanoparticles have a size of from 1 to 500 nm, as measured by Dynamic Light Scattering, an amount of one or more molybdenum-containing compound present in an amount sufficient to provide no greater than 100 ppmw of molybdenum, and wherein the additive composition has a weight ratio of ppmw of zirconium provided by the zirconium-containing nanoparticle(s) and/or the one or more zirconium-containing compound(s) to the ppmw of calcium provided by the one or more overbased-calcium-containing detergent(s) of greater than about 0.01 to less than 5.

A lubricating oil composition, and a method of reducing LSPI events employing the lubricating oil composition, including a base oil of lubricating viscosity, and an additive composition including: one or more overbased calcium-containing detergent(s) sufficient to provide at least 500 ppmw of calcium, and a zirconium-containing nanoparticle(s) and/or one or more zirconium-containing compound(s) sufficient to provide greater than 0 ppmw to 6000 ppmw of zirconium, wherein the nanoparticles have a size of from 1 to 500 nm, as measured by Dynamic Light Scattering, an amount of one or more molybdenum-containing compound present in an amount sufficient to provide no greater than 100 ppmw of molybdenum, and wherein the additive composition has a weight ratio of ppmw of zirconium provided by the zirconium-containing nanoparticle(s) and/or the one or more zirconium-containing compound(s) to the ppmw of calcium provided by the one or more overbased-calcium-containing detergent(s) of greater than about 0.01 to less than 5.

The present disclosure is drawn to a cutting fluid for use in computer numerical control milling. The cutting fluid can include from about 10 wt % to about 90 wt % of a C2 to C6 alcohol; from about 0.1 wt % to about 20 wt % of a chelating agent; from about 0.5 wt % to about 15 wt % of a metal ion selected from aluminum ion, chromium ion, nickel ion, tin ion, zinc ion, or a combination thereof; and from about 8.5 wt % to about 88.5 wt % water. The cutting fluid can have a surface tension that can range from about 22 dynes/cm to about 55 dynes/cm.

The invention relates to a PTFE polymer-based sliding material having fillers which improve the tribological properties, wherein the fillers comprise at least one phosphate, in particular calcium phosphate, calcium pyrophosphate, magnesium phosphate, magnesium pyrophosphate, lithium phosphate, hydroxyapatite or combinations thereof, and at least one metal sulfide, wherein the fraction of the metal sulfide is >2% by volume. The invention also relates to uses of said sliding material.