25 results about "Zinc dithiophosphate" patented technology

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 viscosity 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) an overbased magnesium containing detergent comprising an overbased magnesium salicylate, an overbased magnesium sulfonate, an overbased magnesium phenate, or combinations thereof with a Total Base Number (KOH / g) greater than or equal to 9 and less than or equal to 500 and included at treat level to deliver between 100 to 5000 ppm by weight of total magnesium; iii) an overbased metal-containing detergent comprising an overbased metal salicylate detergent, an overbased metal phenate detergent, or combinations thereof with a Total Base Number (KOH / g) greater than or equal to 9 and less than or equal to 500 and included at treat level to deliver between 100 to 5000 ppm by weight of total metal; and wherein the overbased magnesium containing detergent of ii) and the overbased metal-containing detergent of iii) in combination deliver between 0.15 wt. % to 8.0 wt. % of total soap to the composition; iv) at least one zinc dihydrocarbyl dithiophosphate compound included at a treat level to deliver more than 100 ppm by weight of zinc and less than 800 ppm by weight of phosphorus to the composition; v) 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; vi) at least one silicon containing compound included at a treat level to deliver between 5 to 1000 ppm by weight of total silicon to the composition; and vii) 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 800 ppm by weight 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.

This invention relates to a method of reducing abnormal combustion events in a hydrogen fueled internal combustion engine during operation of the engine including:(i) providing a lubricating oil composition to the hydrogen fueled internal combustion engine;(ii) providing fuel comprising hydrogen to the internal combustion engine; and(iii) combusting the fuel in the hydrogen fueled internal combustion engine;wherein the lubricating oil composition: 1) includes one or more zinc dihydrocarbyl dithiophosphate compounds that provide more than 0.01 mass % zinc, and less than 0.08 mass % of phosphorus, or alternatively greater than or equal to 0.10 mass % and less than 0.40 mass % of phosphorus, based upon the weight lubricating oil composition, and 2) exhibits reduced pre-ignition at a given engine speed (rpm) whilst operating at maximum BMEP for that given engine speed (rpm), as compared to the same composition except that the concentration of the zinc dihydrocarbyl diphosphate compounds is such that the mass % phosphorus present in the lubricating oil composition is not within the specified ranges.

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 viscosity 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) an overbased magnesium containing detergent comprising an overbased magnesium salicylate, an overbased magnesium sulfonate, an overbased magnesium phenate, or combinations thereof with a Total Base Number (KOH / g) greater than or equal to 9 and less than or equal to 500 and included at treat level to deliver between 100 to 5000 ppm by weight of total magnesium; iii) an overbased metal-containing detergent comprising an overbased metal salicylate detergent, an overbased metal phenate detergent, or combinations thereof with a Total Base Number (KOH / g) greater than or equal to 9 and less than or equal to 500 and included at treat level to deliver between 100 to 5000 ppm by weight of total metal; and wherein the overbased magnesium containing detergent of ii) and the overbased metal- containing detergent of iii) in combination deliver between 0.15 wt. % to 8.0 wt. % of total soap to the composition; iv) at least one zinc dihydrocarbyl dithiophosphate compound included at a treat level to deliver more than 100 ppm by weight of zinc and less than 800 ppm by weight of phosphorus to the composition; v) 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; vi) at least one silicon containing compound included at a treat level to deliver between 5 to 1000 ppm by weight of total silicon to the composition; and vii) 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 800 ppm by weight 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 is a lubricating oil composition containing a base oil (A), a metal-based cleaning agent (B) containing a magnesium sulfonate (B1), a boron-modified succinimide (C), and an organic zinc dithiophosphate (D), wherein the atomic content of phosphorus is 500-900 mass ppm on the basis of the total amount of the lubricating oil composition. The lubricating oil composition is substantially free of tetrapropenylphenol, and is used to lubricate equipment mounted on motorcycles.

This invention proposes a lubricating oil composition for a four-stroke engine specifically designed for unmanned aerial vehicles (UAVs) and its preparation method. The lubricating oil composition for a four-stroke engine of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) an alkyl diphenylamine; (C) polyisobutylene succinimide; (D) sulfonates and / or sulfurized alkylphenol salts; (E) zinc dialkyl dithiophosphate; (F) dialkyl dithiocarbamate; (G) polymethyl methacrylate; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The lubricating oil composition for a four-stroke UAV engine of this invention exhibits excellent extreme pressure anti-wear, anti-oxidation, and detergency properties, effectively suppressing the increased wear caused by the high power-to-weight ratio and harsh lubrication conditions of four-stroke UAV engines.

The present invention provides a gasoline engine lubricating oil composition comprising the following components: (A) an organophosphorus compound, accounting for 0.05% to 10% of the total mass of the composition; (B) an alkyldiphenylamine, accounting for 0.05% to 5% of the total mass of the composition; (C) polyisobutylene succinimide, accounting for 2% to 30% of the total mass of the composition; (D) a sulfonate and / or a sulfurized alkylphenol, accounting for 0.2% to 10% of the total mass of the composition; (E) a zinc dialkyl dithiophosphate, accounting for 0.2% to 10% of the total mass of the composition; (F) an organomolybdenum, accounting for 0.05% to 5% of the total mass of the composition; (G) an ethylene-propylene copolymer, accounting for 2% to 30% of the total mass of the composition; and (H) a major amount of a lubricating oil base oil. The structure of the organophosphorus compound is described in the specification. The gasoline engine lubricating oil composition of the present invention has excellent anti-wear, friction-reducing, antioxidant, and detergency properties, and can inhibit the formation of deposits in turbochargers.

Provided is a lubricating oil composition, including: a vegetable oil (A); a zinc dithiophosphate (B); and an amine-based antioxidant (C), wherein a total content of linoleic acid and linolenic acid among constituent fatty acids of the vegetable oil (A) is less than 20 mass % with respect to a total amount of the constituent fatty acids in the vegetable oil (A), wherein a content of the amine-based antioxidant (C) is 2.00 mass % or more with respect to a total amount of the lubricating oil composition, and wherein when the lubricating oil composition further includes a phosphorus-free phenol-based antioxidant (D), a content of the phosphorus-free phenol-based antioxidant (D) is less than 2.00 mass % with respect to the total amount of the lubricating oil composition.

Provided is a lubricating oil composition, including: a vegetable oil (A); a zinc dithiophosphate (B); and an amine-based antioxidant (C), wherein a total content of linoleic acid and linolenic acid among constituent fatty acids of the vegetable oil (A) is less than 20 mass% with respect to a total amount of the constituent fatty acids in the vegetable oil (A), wherein a content of the amine-based antioxidant (C) is 2.00 mass% or more with respect to a total amount of the lubricating oil composition, and wherein when the lubricating oil composition further includes a phosphorus-free phenol-based antioxidant (D), a content of the phosphorus-free phenol-based antioxidant (D) is less than 2.00 mass% with respect to the total amount of the lubricating oil composition.

The present invention provides a methanol fuel engine lubricating oil composition comprising the following components: (A) an organophosphorus compound, accounting for 0.05% to 10% of the total mass of the composition; (B) a phenolic ester, accounting for 0.05% to 5% of the total mass of the composition; (C) polyisobutylene succinimide, accounting for 2% to 30% of the total mass of the composition; (D) a salicylate and / or a sulfurized alkylphenol, accounting for 0.2% to 10% of the total mass of the composition; (E) a zinc dialkyl dithiophosphate, accounting for 0.2% to 10% of the total mass of the composition; (F) an ashless friction modifier, accounting for 0.05% to 5% of the total mass of the composition; (G) a polymethacrylate, accounting for 2% to 30% of the total mass of the composition; and (H) a major amount of a lubricating oil base oil. The structure of the organophosphorus compound is described in the specification. The methanol fuel engine lubricating oil composition of the present invention has excellent anti-wear, friction-reducing, and antioxidant properties, and can inhibit the corrosion of methanol fuel on the engine.

A lubricating oil for a hybrid engine comprising a major amount of an oil of lubricating viscosity; a boron-containing compound in an amount to provide 50 ppm to 300 ppm of boron to the lubricating oil composition; an overbased calcium salicylate or a mixture of an overbased calcium salicylate and an overbased calcium sulfonate, individually having a total base number greater than 150 mg KOH / g as measured by the method of ASTM D-2896, in an amount to provide 800 ppm to 1800 ppm of calcium to the lubricating oil composition; zinc dithiophosphate (ZnDTP) in an amount to bring 100 ppm to 800 ppm of phosphorus to the lubricating oil composition; and a non-dispersant pectinate polymethacrylate (PMA) viscosity index improver (VII). The boron-containing compound includes a borated dispersant. The KV of the lubricating oil composition at 100°C is 6 cSt to 8.5 cSt, the KV of the lubricating oil composition at 40°C is 25 cSt to 35 cSt, and the VI of the lubricating oil composition is greater than 200.

The invention relates to the technical field of lubricating oil, in particular to marine four-stroke methanol engine lubricating oil and a preparation method and application thereof. The marine four-stroke methanol engine lubricating oil is prepared from the following components in parts by weight: 80 to 95 parts of mineral oil, 1 to 5 parts of salicylate, 0 to 2.5 parts of sulfurized alkyl phenate, 3.5 to 4.5 parts of succinimide, 0.5 to 1.2 parts of zinc dioctyl dithiophosphate, 0.1 to 0.5 part of zinc butyl octyl dithiophosphate, 0 to 0.5 part of amine type antioxidant and 0.01 to 0.1 part of anti-foaming agent. The low-ash-content alkali-retaining agent has the advantages of being good in alkali-retaining performance, oxidation resistance and corrosion resistance and low in ash content.

A lubricating oil for hybrid engine includes a major amount of an oil of lubricating viscosity; a boron-containing compound in an amount to provide 50 to 300 ppm of boron to lubricating oil composition; an overbased calcium salicylate or a mixture of an overbased calcium sulfonate and overbased calcium salicylate individually having a total base number of greater than 150 mg KOH / g, measured by the method of ASTM D-2896, present in an amount that provides 800 ppm to 1800 ppm of calcium to the lubricating oil composition; zinc dithiophosphate (ZnDTP) in an amount to bring from 100 to 800 ppm of phosphorus to the lubricating oil composition; and a non-dispersant comb polymethacrylate (PMA) viscosity index improver (VII). The boron-containing compound includes a borated dispersant. The KV at 100° C. of the lubricating oil composition is from 6 cSt to 8.5 cSt, the KV at 40° C. of the lubricating oil composition is from 25 cSt to 35 cSt, and the VI of the lubricating oil composition is greater than 200.

A lubricating oil composition contains a base oil (A), a zinc dithiophosphate (B), and a sarcosine compound (C), the composition having a content of the sarcosine compound (C) of more than 0.05% by mass and 0.40% by mass or less based on the entire amount of the lubricating oil composition, and satisfying requirement (α) or (β):Requirement (α): when the content of the sarcosine compound (C) is more than 0.05% by mass and less than 0.20% by mass based on the lubricating oil composition, one or more phosphorus compounds (D) selected from an acidic phosphoric acid ester (D1) and an amine salt thereof (D2) are optionally contained;Requirement (β): when the content of the sarcosine compound (C) is 0.20% to 0.40% by mass based on the lubricating oil composition, the phosphorus compound (D) is contained in an amount less than 0.50% by mass based on the lubricating oil composition.

This invention relates to a method of reducing abnormal combustion events in a hydrogen fueled internal combustion engine during operation of the engine including: (i) providing a lubricating oil composition to the hydrogen fueled internal combustion engine; (ii) providing fuel comprising hydrogen to the internal combustion engine; and (iii) combusting the fuel in the hydrogen fueled internal combustion engine; wherein the lubricating oil composition: 1) includes one or more zinc dihydrocarbyl dithiophosphate compounds that provide more than 0.01 mass% zinc, and less than 0.08 mass% of phosphorus, or alternatively greater than or equal to 0.10 mass % and less than 0.40 mass % of phosphorus, based upon the weight lubricating oil composition, and 2) exhibits reduced pre-ignition at a given engine speed (rpm) whilst operating at maximum BMEP for that given engine speed (rpm), as compared to the same composition except that the concentration of the zinc dihydrocarbyl diphosphate compounds is such that the mass % phosphorus present in the lubricating oil composition is not within the specified ranges.

This invention provides a gasoline engine lubricating oil composition and its preparation method. The gasoline engine lubricating oil composition of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) an alkyl diphenylamine; (C) polyisobutylene succinimide; (D) a sulfonate and / or a sulfurized alkylphenol salt; (E) zinc dihydrodithiophosphate; (F) an organomolybdenum compound; (G) an ethylene-propylene copolymer; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The gasoline engine lubricating oil composition of this invention exhibits excellent antioxidant, detergency, and dispersing properties, while also demonstrating good anti-wear properties under extreme pressure and lean-oil friction conditions, effectively suppressing engine wear caused by frequent start-stop cycles in hybrid electric vehicles.

A lubricating oil composition capable of achieving a higher level of low friction and a reduction in copper elution amount is required. A lubricating oil composition which contains (A) a base oil, (B) an organic molybdenum compound, (C) one or more sulfur-based compounds selected from the group consisting of zinc dithiophosphate (C1) and sulfur-containing compounds (C2) that do not contain metal atoms in the molecules and have a sulfur chain length of 2 or more, and (D) an overbased metal-based detergent having a base number of 100 mgKOH / g or more, the content of the organic molybdenum compound (B) is more than 0.20% by mass but 1.45% by mass or less.

The present disclosure relates to lubricating compositions and, in particular, lubricating compositions suitable for medium and / or heavy duty diesel engines having low levels of phosphorus and / or zinc but still achieving good valve train wear by including an antiwear system provided from overbased zinc dihydrocarbyl dithiophosphates having a selected average degree of branching and a certain percent of hydrocarbyl groups derived from secondary alcohols.

The invention discloses extreme pressure anti-wear perfluoropolyether lubricating grease and a preparation method thereof. The extreme pressure anti-wear perfluoropolyether lubricating grease comprises the following components in percentage by mass: 60-75% of perfluoropolyether (the chemical formula is CF3CF2CF2O (CF( CF3) CF2O) nCF2-CF3), 25-40% of a thickening agent (polytetrafluoroethylene) and 0.01-3% of an additive (selected from one or a combination of more of alkyl phosphite, zinc alkyl dithiophosphate and the like). The preparation method comprises the following steps: adding polytetrafluoroethylene into perfluoropolyether, and stirring at 70-100 DEG C for 1-2 hours; raising the temperature to 110-130 DEG C and stirring for 1-2 hours; raising the temperature to 170 to 190 DEG C and stirring for 0.5 to 1 hour; cooling to 70-90 DEG C by water cooling, adding an additive, and stirring for 15-45 minutes; and finally grinding for 1-2 hours. The lubricating grease is excellent in extreme pressure anti-wear performance, simple in component, simple and convenient in preparation process and easy to industrially popularize and apply on a large scale.

This invention relates to a method for reducing abnormal combustion events during engine operation of a hydrogen-fired internal combustion engine (HICE). The method includes the steps of: a) providing the HICE with a lubricating oil composition comprising or a mixture of the following components: i) a base oil having a viscosity KV100 of less than or equal to 12 cSt and comprising more than 50% by weight of the composition, and containing Group I, Group II, Group III, Group IV base oils, or combinations thereof; ii) a super-alkaline magnesium detergent comprising super-alkaline magnesium salicylate, super-alkaline magnesium sulfonate, super-alkaline magnesium phenolate, or combinations thereof, having a total base number (KOH / g) greater than or equal to 9 and less than or equal to 500, and containing at a treatment level providing total magnesium between 100 and 5000 ppm by weight; iii) The super-alkaline metal-containing detergent comprises a super-alkaline metal salicylate detergent, a super-alkaline metal phenolate detergent, or a combination thereof, having a total base number (KOH / g) greater than or equal to 9 and less than or equal to 500 and containing at a treatment level providing a total metal content between 100 and 5000 ppm by weight; and wherein the super-alkaline magnesium-containing detergent of ii) and the super-alkaline metal-containing detergent of iii) together provide the composition with a total soap content between 0.15% by weight and 8.0% by weight; iv) at least one dialkyl dithiophosphate zinc compound containing at a treatment level providing the composition with a zinc content greater than 100 ppm by weight and a phosphorus content less than 800 ppm by weight; v) at least one molybdenum-containing compound containing at a treatment level providing the composition with a total molybdenum content between 20 and 2000 ppm by weight; vi) at least one silicon-containing compound containing at a treatment level providing the composition with a total silicon content between 5 and 1000 ppm by weight; and vii) The lubricating oil composition has a total sulfate ash content of less than or equal to 2.0% by weight, a total phosphorus level of less than or equal to 800 ppm by weight, and an 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) supplying hydrogen-containing fuel to the HICE; and c) burning the fuel in the HICE. Lubricating oil compositions and concentrates for reducing the tendency for abnormal combustion events in HICE are also provided.

The invention relates to a tread base rubber material, a preparation method and an all-steel-wire truck radial tire, and belongs to the technical field of tire rubber materials. The rubber material comprises 100 parts of natural rubber, 10-25 parts of high abrasion furnace black, 10-25 parts of bio-based white carbon black, 10-20 parts of white carbon black, 2-5 parts of a silane coupling agent, 0.5-1.5 parts of a modified itaconic acid aid, 3-5 parts of zinc oxide and 1-3 parts of stearic acid; 2-4 parts of an anti-aging agent; 0.5-2 parts of tear-resistant resin and 1-3 parts of an accelerant; 0.5 to 1.5 parts of sulfur powder; and 0.5 to 1.5 parts of a zinc dithiophosphate cross-linking agent. Bio-based white carbon black is used for partially replacing high-abrasion-resistance furnace black, a cross-linking agent AP9 is used for overcoming the defects that stress at definite elongation and elongation are reduced, and a modified itaconic acid auxiliary is used for reducing the Pearn effect of a filling system, so that dynamic heat generation of the rubber material is obviously reduced, the anti-fatigue performance of the rubber material is improved, and the service life of a tire is prolonged.

This invention provides a hydrogen fuel cell internal combustion engine lubricating oil composition and its preparation method. The hydrogen fuel cell internal combustion engine lubricating oil composition of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) a phenolic ester; (C) polyisobutylene succinimide; (D) salicylates and / or sulfurized alkylphenol salts; (E) zinc dihydrogen dithiophosphate; (F) an ashless friction modifier; (G) polymethyl methacrylate; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The hydrogen fuel cell internal combustion engine lubricating oil composition of this invention exhibits excellent antioxidant, detergency, dispersing, and anti-wear properties, effectively reducing engine wear caused by emulsification of hydrogen fuel cell internal combustion engine oil due to increased water content.

Provided is a grease composition which comprises a base oil, urea, and an additive, wherein the base oil contains at least a polyglycol oil, and the additive contains molybdenum dithiocarbamate, molybdenum disulfide, zinc dithiophosphate, barium sulfonate, melamine cyanuric acid (MCA), and an antioxidant. The grease composition has the ratios of the additives with respect to the entirety of the grease composition at 5.0-12.0 mass% for the urea, 0.5-4.0 mass% for the molybdenum dithiocarbamate, 0.7-5.0 mass% for the molybdenum disulfide, 0.3-5.0 mass% for the zinc dithiophosphate, 0.7-5.0 mass% for the barium sulfonate, 0.7-5.0 mass% for the MCA, and 0.3-3.0 mass% for the antioxidant.

A lubricating oil composition may be used for lubrication of a shock absorber. The composition may include a base oil (A), a zinc dithiophosphate (B), and an alkenylsuccinic imide (C). The lubricating oil composition can be more preferably applied to lubrication of a shock absorber. Based on the total lubricating oil composition mass, a content of the component (C) in terms of nitrogen atoms is in a range of from 0.001 to 0.09 mass %, and / or a content of the component (B) in terms of zinc atoms is in a range of from 0.005 to 1.0 mass %.

The present invention provides a lubricating oil composition having both excellent brake noise preventing performance and excellent seizure resistance. The lubricating oil composition contains base oil (A), zinc dithiophosphate (B), and sarcosine-based compound (C), the content of the sarcosine-based compound (C) is more than 0.05 mass% and 0.40 mass% or less based on the total amount of the lubricating oil composition, and satisfies the following condition (α) or (β). Condition (α): In the case where the content of the sarcosine-based compound (C) is more than 0.05 mass% and less than 0.20 mass% based on the total amount of the lubricating oil composition, the phosphorus-based compound (D) is optionally contained, the phosphorus-based compound (D) being one or more selected from acidic phosphate ester (D1) and amine salt thereof (D2). Condition (β): In the case where the content of the sarcosine-based compound (C) is 0.20 mass% or more and 0.40 mass% or less based on the total amount of the lubricating oil composition, the content of the phosphorus-based compound (D) is less than 0.50 mass% based on the total amount of the lubricating oil composition.

This invention relates to a method for reducing abnormal combustion events during engine operation of a hydrogen-fired internal combustion engine, comprising: (i) providing a lubricating oil composition to the hydrogen-fired internal combustion engine; (ii) providing hydrogen-containing fuel to the internal combustion engine; and (iii) burning the fuel in the hydrogen-fired internal combustion engine; wherein the lubricating oil composition: 1) comprises one or more dialkyl dithiophosphate zinc compounds providing more than 0.01% by weight of zinc and less than 0.08% by weight of phosphorus, or more than or equal to 0.10% by weight and less than 0.40% by weight of phosphorus, and 2) exhibits reduced pre-ignition at a given engine speed (rpm) and at maximum BMEP operation at the given engine speed (rpm), except that the concentration of the dialkyl dithiophosphate zinc compound causes the percentage of phosphorus present in the lubricating oil composition to be outside a specified range.