2072results about "Base-materials" patented technology

To provide a novel lubricant agent additive and a novel lubricant agent composition that can reduce friction of a sliding part.SOLUTION: A lubricant agent additive comprises a polymer containing an olefin compound as a monomer unit or a modified polymer obtained by modifying a hydrogenated polymer with maleic acid or maleic anhydride. A lubricant agent composition comprises: a base oil; and a polymer containing an olefin compound as a monomer unit or a modified polymer obtained by modifying a hydrogenated polymer with maleic acid or maleic anhydride.SELECTED DRAWING: None

The invention relates to the field of oil storage microcapsules, and discloses a porous covalent organic framework oil storage microcapsule as well as a preparation method and application thereof. Under the catalysis of p-toluenesulfonic acid, 4, 4 ', 4' '-(1, 3, 5,-triazine-2, 4, 6-triyl) triphenylamine and trialdehyde phloroglucinol monomers are promoted to be subjected to condensation reaction in the repeated oscillation process, a product is purified to prepare a 4, 4', 4 ''-(1, 3, 5,-triazine-2, 4, 6-triyl) triphenylamine covalent organic framework, and by means of a periodic pore structure of the covalent organic framework, the covalent organic framework can be used for preparing the covalent organic framework. And the lubricating oil is adsorbed and stored and can be controllably separated out to provide lubrication during working, so that a high-performance self-lubricating effect can be realized. In addition, covalent organic frameworks are used as hard particles to be doped into a polymer matrix to modify the polymer matrix, so that the wear resistance of the polymer matrix can be greatly enhanced, and the performance of the self-lubricating bearing material is improved.

A lubricating grease for electric vehicle applications includes thickener 6% by weight (wt. %) to 12 wt. %, lubricating oil 57 wt. % to 92.98 wt. %, and surface-active ester 1 wt. % to 10 wt. %. The lubricating grease also includes additives including friction reducer and modifier 0.1 wt. % to 5 wt. %, anti-wear agent 0.1 wt. % to 5 wt. %, and a balance of extreme pressure agent, oxidation inhibitor, and corrosion inhibitor.

The present invention provides a soluble cold rolling oil composition in which oil particles of approximately 0.1 μm or less are dispersed in water, and which has rolling properties (particularly anti-seizure properties) equal to or better than those of water-insoluble rolling oils and emulsion-type rolling oils, while enabling the gloss of products to be made uniform and enabling an improvement in unit consumption compared to emulsion-type rolling oils; and a cold rolling method using the composition. [Solution] A cold rolling oil composition containing (A) a base oil, (B) a specific fatty acid, (C) a specific sulfur-based extreme pressure agent, (D) a specific water-soluble polymer, and (E) a specific amine, and a cold rolling method using the same.

The invention is directed to environmentally stable solid lubricant coatings with bilayer transition-metal dichalcogenide structures that are designed to resist the effects of oxidation during long term storage, or during short exposures under conditions that would oxidize similar films that do not have these bilayer structures. In addition to improving oxidation resistance, these bilayer structures also facilitate the more rapid establishment of a low, steady-state friction coefficient than is possible with similar films that do not have these bilayer structures.

A method for mitigating preignition events in a hydrogen internal combustion engine. The method includes providing a dosing system in fluid communication with a dosing cylinder of a cylinder block of the hydrogen internal combustion engine; introducing a lubricant including a base oil, a polymer, or mixtures thereof to an intake area of the dosing cylinder via the dosing system; and initiating operating conditions for the hydrogen internal combustion engine.

A ride vehicle that is configured to support a rider down a non-wet lubricated recreational slide is provided. The ride vehicle includes an elongate body with a flexible central core positioned between a top surface of the ride vehicle and at least one layer that includes one or more projections. The top surface may include at least on handle for gripping by a rider. The at least one layer forms a bottom surface of the ride vehicle that is configured to contact the non-wet lubricated recreational slide. A coefficient of friction between the at least one layer of the ride vehicle and the non-wet lubricated slide surface is within a range of between about 0.03 to about 0.2.

A composition including a pyrolysis oil and, as an additive, one or more of: (a) an antioxidant; and (b) a stabilising additive selected from (i) alkoxylated amine compounds; (ii) aldehyde-alkylphenol copolymers; (iii) a quaternary ammonium salt, and mixtures thereof. A method and use for improving the stability of a composition including a pyrolysis oil by addition to the composition one or more of said additives is also provided.

A method of lubricating a fluid production pump may include mixing a polarized lubricant with water to produce a diluted lubricant. The method may additionally include creating a flowpath within the fluid production pump. An initial volume of the diluted lubricant may be circulated within the flowpath to allow the diluted lubricant to react with components of the fluid production pump and form a protective barrier on the components of the fluid production pump. The method may further comprise repeatedly introducing a periodic volume of diluted lubricant into the fluid production pump according to a predefined lubrication schedule.

This invention relates to a method of reducing abnormal combustion events in a hydrogen fueled internal combustion engine (HICE) during operation of the engine. The method includes the steps of: a) providing to the HICE a lubricating oil composition including or resulting from the admixing of: i) a base oil having a KV100 of less than or equal to 12 cSt and included at greater than 50 wt. % of the composition and comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; ii) at least one overbased metal containing detergent with a Total Base Number (KOH / g) greater than or equal to 9 and less than or equal to 500 and included at a treat level to deliver between 100 to 5000 ppm by weight of total metal and between 0.15 wt. % to 8.0 wt. % of total soap to the composition; iii) at least one molybdenum containing compound included at a treat level to deliver between 20 to 2000 ppm by weight of total molybdenum to the composition; and iv) the lubricating oil composition having a total sulfated ash of less than or equal to 2.0 wt. %, a total phosphorous level of less than or equal to 0.120 wt. %, and a SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50 or 60; b) providing a fuel comprising hydrogen to the HICE; and c) combusting the fuel in the HICE. Also provided are a lubricating oil composition and a concentrate for use in a HICE to reduce the propensity for abnormal combustion events.

Provided herein are processes for recycling hydrocarbons in a used high performance lubricant such as wind turbine gear oil. In the present process and methodologies, the used high performance lubricant is not mixed with another type of used oil. The used high performance oil is contacted with a solvent in an extraction process. Contaminates are extracted and circular hydrocarbons are formed. Solvent can be recovered, and the circular hydrocarbon combined with a high performance base stock for use as a high performance lubricant in a mechanical system.

Embodiments herein relate to lubricating coatings comprising polyacrylic acid for medical devices. In an embodiment, a medical device includes a lubricious coating having a substrate and a first layer disposed on the substrate. The first layer may include a photoreactive polyvinylpyrrolidone, a non-photoreactive polyvinylpyrrolidone, and a crosslinking compound. The second layer may be disposed on the first layer, the second layer may include poly (acrylic acid) and a non-photoreactive polyvinylpyrrolidone. The non-photoreactive polyvinylpyrrolidone of the second layer forms a composite with the poly (acrylic acid) of the second layer. The non-photoreactive polyvinylpyrrolidone of the second layer has a concentration that is present in a gradient in the thickness direction of the second layer, wherein the concentration at the outer surface of the second layer is lower than the concentration at the inner surface of the second layer. Other embodiments are also included herein.

An environmentally friendly metal cutting oil with high load-bearing and high wear resistance, belonging to the technical field of metal cutting fluids. The cutting fluid is composed of diisooctyl sebacate, phosphate amine salt extreme pressure additives, borate series additives and sulfurized extreme pressure additives, the sulfurized extreme pressure additives are sulfurized fatty acid esters and dialkyl pentasulfide (Rc2540). The load-bearing capacity (Pb) of the cutting oil can reach more than 920N, and the low-load long-wear wear spot diameter (Db) can be less than 0.35 mm.

The invention relates to the technical field of base oil molecular structure modification, in particular to a gasoline engine oil composition and a base oil molecular modification method thereof, the composition contains 70-85 parts of modified base oil, 5-10 parts of boric acid ester dispersing agent and other additives; when the modified base oil is prepared, the base oil firstly reacts with 3-mercaptopropyltrimethoxysilane, then glycidyl methacrylate and N-vinyl pyrrolidone are sequentially added, a multi-step temperature control reaction is carried out, siloxane groups, epoxy groups and pyrrolidone groups are grafted on molecular chains, and the modified base oil is obtained and used for preparing high-performance gasoline engine oil. Through base oil molecule modification and special additive compounding, the viscosity-temperature performance, the wear resistance and the oxidation stability of the gasoline engine oil are improved, and sediment generation is reduced; the process reduces energy consumption and cost, meets environmental protection requirements, and realizes unification of high performance and economical efficiency.

The present disclosure provides a drag reducing agent. In an embodiment, the drag reducing agent includes a polymer and a liquid carrier. The polymer is composed of one or more C6-C14 α-olefin monomers. The polymer includes a residual amount of zirconium. The polymer has an absolute weight average molecular weight (Mw(Abs)) greater than 1,300,000 g / mol and a (Mw(Abs) / Mn(Abs) from 1.3 to 3.0.

A lubricant composition may be of use in lubrication of an internal combustion engine. A method of utilizing such a lubricant composition may include: lubricating an internal combustion engine using a lubricant composition comprising: from about 30.0 mass % to about 99.8 mass % of an oil base stock, based on a total mass of the lubricant composition, the oil base stock comprising at least one polyol ester; and from 1.0 mass % to 30.0 mass % polyisobutylene, based on a total mass of the lubricant composition; and combusting a fuel in the internal combustion engine.

A C16 alkane composition containing at least 90 wt. % C16 alkanes and having a 100 °C kinematic viscosity from 0.9 to 1.5 cSt, a 40 °C kinematic viscosity from 2 to 3.6 cSt, and a flash point from 115 to 140 °C and / or a pour point from -60 to -30 °C. A C24 alkane composition containing at least 90 wt. % C24 alkanes and having a 100 °C kinematic viscosity from 2 to 3 cSt, a 40 °C kinematic viscosity from 7.7 to 9.7 cSt, and a flash point from 185 to 215 °C and / or a pour point from -95 to -70 °C. An alkane composition containing from 5 to 95 wt. % C16 alkanes and from 95 to 5 wt. % C24 alkanes, based on a total weight of the C16 alkanes and the C24 alkanes.

A working medium contains (E)-1,3,3,3-tetrafluoropropene, (Z) 1-chloro-2,3,3,3-tetrafluoropropene, and 1,1,1,2-tetrafluoroethane, wherein, with respect to a total content of the (E)-1,3,3,3-tetrafluoropropene, the (Z) 1-chloro-2,3,3,3-tetrafluoropropene, and the 1,1,1,2-tetrafluoroethane, a content of the 1,1,1,2-tetrafluoroethane is 14.5% by mass or less, a content of the (Z) 1-chloro-2,3,3,3-tetrafluoropropene is 10.0% by mass or less, and a content of the (E)-1,3,3,3-tetrafluoropropene is 75.5% by mass or more.

The invention discloses a preparation method of high-temperature transformer oil, and belongs to the technical field of high-temperature transformer oil. Comprising the following steps: 1, carrying out hydrolysis reaction to obtain ricinoleic acid; step 2, carrying out first esterification reaction to obtain a ricinoleic acid esterification product; 3, performing epoxidation reaction to obtain an epoxidized ricinoleic acid esterification product; 4, carrying out ring-opening reaction to obtain ring-opened castor oil; 5, carrying out a second esterification reaction to obtain modified castor oil base oil; and 6, mixing the modified castor oil base oil, a viscosity index improver, an antioxidant, a demulsifying agent and an extreme pressure agent to obtain the high-temperature transformer oil. The invention provides modified castor oil and a preparation method thereof. The high-temperature antioxidant transformer oil prepared by using the modified castor oil as base oil has the characteristics of environmental protection, degradability, high flash point, high breakdown voltage and the like, and also has excellent oxidation stability.

To provide a thermally conductive grease composition which has high thermal conductivity, has excellent coatability, and allows a temperature distribution to be visually recognized.SOLUTION: A thermally conductive grease composition containing a base oil, a thermally conductive filler, and a capsule pigment encapsulating a leuco dye, a developer, and a color change temperature regulator.SELECTED DRAWING: None

A lubricating oil composition for an automotive vehicle with an electric motor and / or generator is provided. The lubricating oil composition includes: a. a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100°C in a range of about 1.5 mm2 / s to about 20 mm2 / s; b. an sulfur-based additive including a thiadiazole and a sulfurized polyolefin of formula (I): SSR1R2S (I) where R1 is hydrogen or methyl, and R2 is a C8-C40 hydrocarbyl group, the sulfur-based additive providing sulfur to the lubricating oil composition in an amount of 0.01 wt. % to 0.2 wt. %, based on the total weight of the lubricating oil composition; c. a phosphorus compound; and d. an ashless polyisobutenyl succinimide-based dispersant containing boron. The lubricating oil composition provides exceptional volume resistivity, detergency, thermal and oxidative stability, wear resistance, and corrosion resistance at high temperatures.

The invention provides polyether base oil and a preparation method and application thereof.According to the polyether base oil, a melt polycondensation method is adopted, a diester group-COO-R-COO-is introduced into a molecular structure through hydroxyl groups at the two ends of polyalkylene oxide, a polyether ester molecular chain with ether bonds and diester bonds distributed alternately is formed, and the polyether base oil is prepared. Then, carboxyl at the end group of a molecular chain is further subjected to an end-capping reaction with an amine compound, a unique amine double-end-capped polyether ester structure is obtained, and the polyether base oil has excellent viscosity-temperature performance, oxidation resistance, anti-rust performance and anti-wear and anti-friction performance.

An object is to provide a method for producing a magnetic disk that employs a fluorine-based solvent which has a low global warming potential and in which solubility of a high-polarity perfluoropolyether compound is excellent. This object is achieved by a method for producing a magnetic disk, the method including the step of applying, to a magnetic disk substrate, a lubricant solution containing a lubricant and a hydrofluoroether having a 100-year global warming potential value of less than 1000 and having a structure represented by the following Formula (A):where: Ra represents F, CF2-Re, or CF3; Rb represents O-Rd or C(-Rf)3; Rc represents H, F, or CF3; Re and Rd each independently represent a hydrocarbon group which may be partially substituted by a fluorine atom and each have a main chain in which at least one carbon atom may be replaced by an oxygen atom; and Rfs each independently represent H, F, or a hydrocarbon group that may be partially substituted by a fluorine atom, and the hydrocarbon group that may be partially substituted by the fluorine atom has a main chain in which at least one carbon atom may be replaced by an oxygen atom.

A lubricant including a plurality of segments including a divalent center segment and two sidechain segments, each including a perfluoroalkyl ether moieties is provided in which a dewetting thickness of the lubricant may be determined based in-part on a segment weight average molecular weight of the segments. A magnetic recording medium and a magnetic data storage system including the lubricant are also provided.

A method of recycling waste lubricant. The method includes providing a waste lubricant-derived oil fraction, pretreating the waste lubricant-derived oil fraction, and hydrocracking the pretreated waste lubricant-derived oil fraction. The method has economic advantages in that waste lubricant can be recycled into fuel oil and high-grade lube base oil with a relatively high yield compared to a lube base oil manufacturing process utilizing only unconverted oil as a feedstock.

This invention relates to lubricating oil compositions containing less than 1000 ppm phosphorus, comprising or resulting from the admixing of A) one or more base oil(s), B) one or more dispersant(s), wherein said one or more dispersants comprise at least 2.0 mass %, based on the total mass of the lubricating oil composition, of one or more unborated poly(alkenyl)succinimides, in which the polyalkenyl is derived from polyisobutylene and the imide is derived from polyamine (“PIBSA-PAM”); and C) one or more detergent(s), wherein said one or more detergent(s) together provide soap to the lubricating oil composition in an amount of 0.1 to 0.9 mass %, based on the total mass of the lubricating oil composition; wherein the ratio of mass %, based on the total mass of the lubricating oil composition, of the one or more unborated PIBSA-PAM(s) to soap of the lubricating oil composition is 6.65 or more.

The invention belongs to the technical field of tribology, and particularly relates to a fatty alcohol-based eutectic solvent as well as a preparation method and application thereof. The fatty alcohol-based eutectic solvent provided by the invention comprises the following component materials: fatty alcohol and quaternary ammonium salt; the number of carbon atoms in the fatty alcohol is 8-16, and the molar percentage of the fatty alcohol in the fatty alcohol and the quaternary ammonium salt is 20-80%. According to the fatty alcohol-based eutectic solvent provided by the invention, long-carbon-chain fatty alcohol is taken as a hydrogen bond donor, quaternary ammonium salt is taken as a hydrogen bond acceptor, and the proportion of the fatty alcohol to the quaternary ammonium salt is controlled, so that the prepared fatty alcohol-based eutectic solvent has good hydrophobicity, low viscosity, low freezing point and excellent wettability to a steel substrate; when used as a lubricant, the lubricating oil can reduce the friction coefficient under complex working conditions and reduce the wear to the surface of a friction pair, and shows excellent friction reduction and wear resistance. The fatty alcohol-based eutecticevaporate solvent disclosed by the invention can keep a low friction coefficient and a low wear volume in high load and long-time friction.

Provided is a refrigerator oil composition to be used in a refrigerant including a hydrocarbon refrigerant, the refrigerator oil composition including a polyol ester (P) of dipentaerythritol and one or more kinds of fatty acids (A) selected from fatty acids each having 2 to 23 carbon atoms. The polyol ester (P) satisfies the following requirements (α) and (β): ·Requirement (α): the fatty acids (A) satisfy the specific formula (α1); and ·Requirement (β): a content of a branched fatty acid in the fatty acids (A) is less than 80 mass% with respect to a total amount of the fatty acids (A).

A grease composition that includes at least an oil-based medium, a thickener, and a fullerene-like nano-structure. The fullerene-like nano-structure includes a plurality of layers each comprised of a metal chalcogenide composition has a molecular formula of MX2, where M is a metallic element selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), cadmium (Cd), hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), mercury (Hg) and combinations thereof, and X is a chalcogen element selected from the group consisting of sulfur (S), selenium (Se), tellurium (Te), oxygen (O) and combinations thereof.

A C16 alkane composition containing at least 90 wt. % C16 alkanes and having a 100° C. kinematic viscosity from 0.9 to 1.5 cSt, a 40° C. kinematic viscosity from 2 to 3.6 cSt, and a flash point from 115 to 140° C. and / or a pour point from −60 to −30° C. A C24 alkane composition containing at least 90 wt. % C24 alkanes and having a 100° C. kinematic viscosity from 2 to 3 cSt, a 40° C. kinematic viscosity from 7.7 to 9.7 cSt, and a flash point from 185 to 215° C. and / or a pour point from −95 to −70° C. An alkane composition containing from 5 to 95 wt. % C16 alkanes and from 95 to 5 wt. % C24 alkanes, based on a total weight of the C16 alkanes and the C24 alkanes.