880 results about "Gear oil" patented technology

The present invention comprises novel lubricating compositions, automotive gear lubricating compositions, and fluids useful in the preparation of finished automotive gear lubricants and finished gear oils, and methods of preparation thereof. One embodiment of the present invention comprises a lubricating composition comprising a blend of a PAO having a viscosity of greater than or equal to about 40 cSt. at 100° C. and less than or equal to about 1,000 cSt. at 100° C. and an ester having a viscosity of less than or equal to about 2.0 cSt. at 100° C., wherein said blend of said PAO and said ester has a viscosity index greater than or equal to the viscosity index of the PAO.

The invention provides an open gear grease composition, which comprises the following components and the weight percentage contents are that gelatinizer 2-6%, mineral oil 20-60%, synthetic oil 20-60%, antioxidant 0.3-1%, oil solubility anti-wear extreme pressure additive 1-15%, solid additive 3-20% and rust inhibitor 1-3%. The open gear grease composition of the invention does not contain dissolvent and bitumen, which has no harmless to environment, and solves the problems that bitumen-type open gear oil has bad pollution and low-temperature performance, and the flowability of open gear grease is bad. The open gear grease composition has outstanding water resistance, adhesiveness and antiwear and extreme pressure property.

The invention discloses extreme-pressure abrasion-resistant open gear oil which is prepared from the following components by weight: 20-40% of tackifier, 1-2% of rust inhibitor, 0.08-1% of antioxygen, 5-50ppm of anti-foaming agent, 0.05-0.4% of demulsifying agent, 0.002-1% of extreme-pressure abrasion-resistant agent, 0.2-2% of purification dispersant and the balance being base oil, wherein the extreme-pressure abrasion-resistant agent refers to nanometer grapheme. By adding the nanometer grapheme to serve as the extreme-pressure abrasion-resistant agent, the extreme-pressure abrasion resistance of the gear oil is improved, an abrasion-resistant effect is remarkable and the abrasion loss can be reduced by 52%; by utilizing effective adhesive, clearing agent, antirust corrosion-resistant additive and the antioxygen, the adhesion, viscosity-temperature characteristic and antioxidant rust resistance of the oil are ensured; and by adding the dispersant, the problem of blockage caused by poor dispersibility of the nanometer grapheme which serves as a solid extreme-pressure agent is solved.

A universal oil composition for gear contains mineral lubricating oil or synthetic lubricating oil or their mixture, at least one viscosity index improver and/or pour depressor, at least one S-contained extreme-pressure agent, at least one P-contained antiwear agent, phosphate-type multi-effect agent, oil agent (1-hydroxyethylene-1, 1-biphosphonate), and at least one metallic deactivator and/or antirust agent.

The invention discloses a universal oil composition for environment-friendly energy-saving engineering machinery. The universal oil composition comprises the following components according to mass percent: 85%-90% of composite base oil and 15%-10% of other additives. The universal oil composition for the environment-friendly energy-saving engineering machinery adopts a poly-alpha-olefin (PAO) and dioctyl sebacate composition as the base oil, is good in comprehensive performance, can replace diesel engine oil, hydraulic oil, gear oil, hydraulic transmission fluid and other various unit oil used in the engineering machinery, achieves multiple purposes, increases the power of a diesel engine, improves the reliability, the fuel economy and the low-temperature start performance of the diesel engine and the working efficiency and the precision of a hydraulic system, and effectively prolongs the service life and the oil draining period of the hydraulic system, the diesel engine, a gear system, a hydraulic transmission system and other various units.

The invention discloses an open gear oil composition, which comprises the following parts: 10-70% thickener, 0.1-5% extreme-pressure antiwear agent, 0.005-0.5% anti-emulsifier and mineral oil typed and or synthetic basic oil. The invention improves open gear oil viscosity-temperature property, which modifies oil stability and reserving property.

A lubricative composition for industrial machinery and equipment which comprises a base oil selected from among mineral oils, fats and oils, synthetic oils and mixture of two or more of them, and at least one additive selected from among the following components (A) to (D): component (A): (A-1) a phosphorus-containing carboxylic acid and/or (A-2) a thiophosphoric ester, component (B): a dispersant viscosity index improver, component (C): (C-1) a specific amidocarboxylic acid compound and/or (C-2) a specific carboxylic acid compound, and component (D): an ester oiliness improver. The composition is favorable as a lubricating oil composition and useful as a gear oil composition, a lubricating oil composition for paper machines or a lubricating oil composition for slide guides, a hydraulic oil, or the like.

The present invention relates to a novel use of nanomaterials as a viscosity modifier and thermal conductivity improver for gear oil and other lubricating oil compositions. The gear oils of the instant invention have a higher viscosity index, higher shear stability, and improved thermal conductivity compared to currently available gear oils. The preferred nanoparticles also impart a reduction in the coefficient of friction, including reduced friction in the boundary lubrication regime. These properties are obtained by replacing part or all of the polymer thickener or viscosity index improver or some other part of the composition normally used in gear oils with nanomaterials of suitable shape, size, and composition.

This invention relates to mineral oil based gear oils and transmission fluids which comprise a major amount of a mineral oil having an iodine number of less than 9 and where at least 55% of the saturates are aliphatic, and gear oil or transmission fluid additives. In one embodiment, the invention relates to a gear oil or transmission fluid composition comprising a major amount of lubricant basestock and at least one functional additive wherein a major amount of the lubricant basestock comprises a mineral oil having an iodine number of less than 9 and comprising at least 45% by weight of aliphatic saturates. These gear oils and transmission fluids have good viscosity and oxidation properties.

The invention relates to low-temperature and over-loading synthetic gear oil comprising at least the following components: an anti-wear reagent at extreme pressure, a friction modifier, a viscosity index improver, and base oil, wherein the anti-wear reagent at extreme pressure at least comprises an oil-soluble nano-borate, the viscosity index improver at least comprises a modified polymethacrylate tackifier, the friction modifier at least comprises organic molybdenum, the base oil is mixed base oil comprising polyalphaolefin and ester oil, the mass percentage of the mixed base oil is 78.4%, the mass percentage of the modified polymethacrylate tackifier is 7.5%, the mass percentage of the oil-soluble nano borate is 2%, and the mass percentage of organic molybdenum is 0.2-0.3%. The gear oil disclosed by the invention has excellent low temperature performance and can effectively prolong the life cycle of oil products, and a solid borate film formed by the borate has excellent extreme pressure resistance, can bear huge load and has excellent anti-wear and anti-friction performances.

The invention relates to a gear oil composition and applications thereof, mainly solving problems of abnormal gear wear and poor oxidation stability of an oil product which are caused by that the extreme pressure property of industrial gear oil in the prior art fails to satisfy a part of using requirements of the metallurgy industry. According to the technical scheme adopted by the gear oil composition, the gear oil composition comprises following components by weight: a) 100 parts of mineral base oil; b) 0.1-10.0 parts of an anti-wear reagent at extreme pressure; c) 0.01-2.0 parts of an antioxidant; d) 0.01-0.5 part of a metal deactivator and e) 0.01-1.5 parts of an oiliness agent, wherein the anti-wear reagent at extreme pressure is a mixture of sulfurized isobutylene and at least one selected from sulfurized olefin, phenyl sulfide, sulfurized aliphatic ester or amine thiophosphate diester; and the antioxidant is at least one selected from 2,6-di(tertbutyl)-p-cresol, 3.5-di(tertbutyl)-4-hydroxy phenyl acrylate, pentaerythrite tetra[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate], N-phenyl-1-naphthylamine or alkylated diphenylamine. By the technical scheme, the problems are solved well and the gear oil composition can be used for industrial production.

The invention provides oil-gas lubricating oil which comprises the following components in percentage by weight: 75-90% of polyester type base oil, 6-20% of other types of base oil, 0.3-3% of antioxidant, 0.01-2% of antirusting agent, 0.5-3% of oiliness improver, 1-5% of extreme pressure antiwear agent and 0.01-0.5% of anti-foaming agent, wherein other types of base oil is one or more than one of synthetic ester, alkyl benzene and alkyl naphthalene. The provided oil-gas lubricating oil has strong universality, is not easy to coke at high temperature and has excellent high temperature performance and good lubricating property. The oil-gas lubricating oil not only can be applied to various bearings of an oil-gas lubricating device, gear cases with various loads, worm gears, worms, locomotive wheel rims, rail cases and the like, but also can be used as ordinary gear oil. Moreover, the oil-gas lubricating oil can be used both in summer and in winter and in southern region and northern region. The oil-gas lubricating oil has strong cleaning performance and can effectively prevent coked matter from blocking oil pipelines.

The invention provides a gear lubricant composite for manual transmissions of the light cars, comprising (A) at least one type of refining mineral oil with high viscosity index, or polyolefin synthesis oil, or ester lubricants, or a free composite of the above components, (B) at least one type of viscosity index improver, (C) at least one type of pour point depressant, (D) at least one type of extreme pressure additive with sulfurs, (E) at least one type of anti-wear additive with phosphorus, (F) at least one type of wear, oxygen, and corrosion-preventing multifunctional additive with phosphorus, (G) at least one type of anti-rusting additive, and (H) at least one type of friction modifier. The lubricant composite has excellent performance of high and low temperature, which can meet the requirements of gear oil with a viscosity grade of 75W/90. Moreover, passing the full-size gear bench tests as CRCL-42, L-37, L-33, L-60, and L-60-1 as well as cycle bench tests for the manual transmissions of the light cars, the gear lubricant composite can meet lubrication requirements of the manual transmissions of the light top-grade cars.

This invention relates to lubricating oil additives, and to lubricating oil compositions, their method of preparation, and use. More specifically, this invention relates to several novel lubricating oil additives and compositions which contain a tungsten compound and an antioxidant, namely aminic antioxidants such as a secondary diarylamine or an alkylated phenothiazine. The use of the tungsten compound with the secondary diarylamine and/or the alkylated phenothiazine provides improved oxidation and deposit control to lubricating oil compositions. The lubricating oil compositions of this invention are particularly useful as crankcase and transmission lubricants, gear oils and other high performance lubricant applications.

A lubricative composition for industrial machinery and equipment which comprises a base oil selected from among mineral oils, fats and oils, synthetic oils, and mixtures of two or more of them, and at least one additive selected from among the following components (A) to (D): (A): (A-1) a phosphorus-containing carboxylic acid and/or (A-2) a thiophosphoric ester (B): a dispersant viscosity index improver, (C): (C-1) a specific amidocarboxylic acid and/or (C-2) a specific carboxylic acid, and (D): an ester oiliness improver. The composition is favorable as a lubricating oil composition and useful as a gear oil composition, a lubricating oil composition for paper machines or slide guides, a hydraulic oil, or the like.

The invention discloses a lubricating oil wear resistant additive. The lubricating oil wear resistant additive comprises, by mass, 70-80% of base oil, 5-10% of organic molybdate, 1-3% of sorbitan monooleate, 0.7-0.8% of zinc diamyldithiocarbamate, 1-3% of nanometer graphene, and the balance of additives. The lubricating oil wear resistant additive has wear resistance and reduction effects on various lubricating oils, has a restoration function, can reduce the mechanical work noise and power loss, and is suitable for any brand of machine oils, gear oils, hydraulic oils, track oils and other lubricating oils. The invention also discloses a preparation method of the lubricating oil wear resistant additive. The method comprises the following steps: mixing nanometer graphene with sorbitan monooleate, carrying out ultrasonic dispersion, adding base oil, organic molybdate, zinc diamyldithiocarbamate and the additives, and uniformly stirring. The preparation method has the advantages of simple process steps, low cost, and suitableness for industrial production.

The invention relates to compositions comprising a blend of Group III basestocks and low volatility, low viscosity PAO basestocks. The blend is particularly useful for preparing finished lubricants that meet or even exceed the criteria for SAE Grade 0 W multi-grade engine oils. The combination of these low volatility, low viscosity PAOs with Group III basestocks provide, in embodiments, the necessary performance criteria in automatic transmission fluids, automotive or industrial gear oils, hydraulic fluids, or any other high performance lubricant requiring a combination of excellent low fluidity and low volatility.

The invention discloses a new open-typed gear oil composition, which comprises the following parts: 0.2-70% thickener, 0.1-5% extreme-pressure antiwear agent, 0.005-0.5% anti-emulsifier, 0.5-8% oil-soluble friction modifier and basic oil. The invention expands the application scale of oil, which satisfies the lubricating need of different equipments.

The invention provides a worm and gear oil composition and a preparation method thereof. The worm and gear oil composition comprises at least one polyether base oil, at least one extreme-pressure anti-wear agent, at least one oiliness agent or friction modifier, at least one antioxidant of amine, phenolic or a mixture of the two, at least one metal deactivator, at least one demulsifier, and at least one anti-foam agent, wherein the viscosity of the polyether base oil at 40 DEG C is 40mm<2>/s-680mm<2>/s according to measurement with GB/T265, and the extreme-pressure anti-wear agent comprises phosphate amine salt with a specific structure. The worm and gear oil composition provided by the invention has an excellent extreme-pressure anti-wear property, causes no corrosion to non-ferrous metals and particularly copper, and has excellent high-temperature detergency, oxidation stability, lubricating oil properties and viscosity-temperature properties, a simple preparation method and a wide application range.

Mixtures of the reaction product of at least one C5-C60 carboxylic acid and at least one amine selected from the group consisting of guanidine, aminoguanidine, urea, thioruea and salts thereof and a phosphorus-containing dispersant are useful as gear oil additives. Lubricant formulations containing said mixtures exhibit excellent low and high temperature rheology and are particularly suited for use in automotive and industrial gear applications. Lubricants of the present invention exhibit improved performance properties such as increased axle efficiencies and lower axle temperatures compared to lubricant formulations that do not contain said mixtures.

The invention provides a lubricating oil composite antioxidant by using synergy generated by compounding among antioxidants of different types. The composite antioxidant at least comprises the following components: (1) alkylated diphenylamine antioxidant; (2) thiophenolic ester antioxidant; and (3) thioether phenolic antioxidant. The invention also provides a lubricating oil composition with oxidation stability. The invention also provides a method for improving oxidation stability of lubricating oil. The composite antioxidant does not contain diluent, can partially replace the consumption of zinc dialkyldithio-phosphate (ZDDP), has predominant effect of controlling the viscosity increment of oil, has obvious inhibiting effect on generation of sediments, and particularly has cleaning effect on the surface of a piston. The composite antioxidant has good compatibility with other component additives, and can be prepared into the lubricating oil composition such as hydraulic oil, steam turbine oil, gear oil, heat conducting oil and the like.