55results about How to "Excellent high temperature detergency" patented technology

The invention provides a method for preparing high base number (TBN400) synthetic calcium alkyl-benzene sulfonate. The method comprises the following steps of: adopting a mixed acid of long-chain linear alkyl-benzene sulfonic acid and high-boiling heavy alkyl-benzene sulfonic acid, calcium oxide and/or calcium hydroxide, low-carbon alcohol, alkaline-earth metal halide or nitrate, and a mixture of alkaline-earth metal alkylphenol or alkaline-earth metal alkylphenate and polyisobutylene succinic anhydride for a neutralization reaction in the presence of a solvent and cutback oil at a temperature of between 40 and 80 DEG C; then, passing through carbon dioxide to a product of the neutralization reaction at a temperature of between 40 and 60 DEG C for a carbonation reaction; and producing high base synthetic alkyl-benzene sulfonate with a total base number (TBN) of 400mgKOH/g by adopting a process of a one-step method. The product is divided into high-base number (TBN400) synthetic alkyl-benzene sulfonate containing chlorine and high-base number (TBN400) synthetic alkyl-benzene sulfonate without the chlorine. The product produced by adopting the method with low viscosity, small turbidity, easy filtration, light color and no skin formation has the advantages of excellent high-temperature detergency, excellent anti-foaming property and excellent heat storage stability.

The present invention provides a special gear lubricating oil composition for a high speed train. The special gear lubricating oil composition comprises: (A) at least a high viscosity index hydrorefining III mineral oil, or polyolefin synthesis oil, or ester synthesis oil, or an any combination selected from the above components; (B) at least a viscosity index improver; (C) at least a pour point depressant; (D) at least a vehicle gear oil composite additive; (E) at least a phosphorus-containing anti-wear additive; (F) at least a metal deactivation additive; (G) at least an ash-free dispersion additive; and (H) at least an energy-saving friction-reduction agent. The lubricating oil composition has characteristics of excellent high speed anti-scratching performance, excellent high temperature detergency and excellent energy-saving friction-reduction performance, wherein the high speed anti-scratching performance of the lubricating oil composition can be increased by 33% and transmission efficiency can be increased by 15% compared with the commercially available API GL-5 vehicle gear oil.

The present invention describes one kind of calcium alkyl salicylate as metal detergent and its preparation process. Under the condition of certain pressure and in the presence of glycol as promoter, the materials including alkyl phenol, calcium hydroxide, etc. are made to pass through the three-step process including neutralization, carboxylation and high alkalinity reaction to synthesize medium alkalinity carboxylation calcium alkyl salicylate product with alkalinity over 160 mg KOH/g. The product of the present invention has excellent high temperature detergency, excellent low temperature dispersivity, certain antioxidant anticorrosion, extreme pressure antiwear performance and excellent compatibility with sulfonate detergent, and is one lubricant oil additive with excellent performance.

The present invention provides a lubricating oil composition, which comprises 1-15% by mass of a viscosity index improver, zinc dialkyl dithio phosphate, and a main amount of a lubricating base oil, wherein the viscosity index improver is prepared by carrying out a polymerization reaction and a hydrogenolysis reaction on straight chain alkyl vinyl ether and branched-chain alkyl vinyl ether, and the phosphorus element content in the zinc dialkyl dithio phosphate is 0.01-0.07% of the mass of the composition. According to the present invention, the lubricating oil composition has characteristics of excellent low temperature property, excellent viscosity-temperature property, excellent shear stability and excellent wear resistance; and the sulfur content in the composition does not exceed 0.4% by mass, the sulfate ash content in the composition does not exceed 1% by mass, and the phosphorus content does not exceed 0.08% by mass.

The invention provides lubricating oil composition and a method for improving detergency of lubricating oil. The lubricating oil composition is prepared from a compound detergent, a dispersant, an antioxidant, an anti-wear agent, a demulsifier and the balance of lubricating base oil, wherein the compound detergent is a mixture of alkylsalicylate, sulfurized alkyphenate and sulfonate. The lubricating oil composition has excellent high-temperature detergency, oxidation stability and antiwear and antifriction properties, particularly has excellent high-temperature detergency and emulsion resistance and is rapid and thorough in water separation and applicable to lubrication of diesel engines for ships and particularly, lubrication of crank cases of two-stroke and low-speed crosshead type diesel engines for ships and medium-speed piston type diesel engines.

The invention relates to air compressor oil, comprising a phenolic antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a metal deactivator, an ash-free antiwear agent, a defoamer, a light-sensitive agent, a hydrogenation paraffin base oil fraction, a hydrogenation naphthenic base oil and a hydrogenated alkyl high boiling substance. The invention also provides a preparation method of the air compressor oil. The air compressor oil disclosed by the invention has excellent high-temperature carbon deposit resistance, excellent high-temperature oxidation resistance, and excellent abrasion resistance, and simultaneously has excellent lubricating property, anti-foaming property and demulsibility on the product, the cost performance of the product is improved, the performances of the synthetic air compressor oil and composite synthetic air compressor oil are achieved, and the long-term work requirements of single-screw and dual-screw air compressors are completely met.

The invention relates to a preparation method of lubricating oil metallic detergent alkyl radical sodium salicylate. The method takes carbolic acid and alpha-olefine as the raw material, and takes specific positive ion exchange resin as the alkanization reaction catalyser to perform the alkanization reaction, and then neutralization reaction, carboxylation reaction and high alkalinity reaction are performed to prepare the alkyl radical sodium salicylate lubricating oil metallic detergent. The product compounded by the invention has better appearance and color, and excellent high temperature detergent, also has excellent thermal stability, low temperature dispersibility, anti oxygen, anticorrosion property, and a certain extreme pressure antifriction property, and is lubricating oil additive with high performance.

The invention provides a lubricating oil composition and a method for improving the comprehensive performances of lubricating oil. The lubricating oil composition comprises alkylsulfo phosphinic anhydride, a demulsifier, a detergent, an antioxidant, a dispersant and a main quantity of lubricating base oil. The lubricating oil composition has excellent high temperature cleaning property, oxidation stability and wear resisting and friction reducing properties, especially has excellent high temperature cleaning property and emulsification resistance, realizes rapid and thorough water diversion, is suitable for lubricating marine diesel engines, and is especially suitable for lubricating crankcases of two-stroke low-speed crosshead marine diesel engines and lubricating medium-speed piston type diesel engines.

The invention discloses an automobile anti-wear lubricating oil, comprising the following raw materials in percentage by weight: 2%-3% of alkyl salicylic acid, 0.2%-2.0% of zinc dialkyl dithiophosphate, 0.6%-5% of borate, 1.0%-2.5% of polyvinyl-N-butylether, 0.05%-0.40% of benzotriazole, 0.1%-1.0% of alkyl naphthalene, 1%-3% of methyl silicone oil, 1%-3% of anitimony diisopropyl dithio phosphate, 1%-3% of butyl stearate and the balance of base oil. Compared with the prior art, the automobile anti-wear lubricating oil has the beneficial effects of excellent high temperature detergency, antioxidation stability, anti-friction and anti-wear properties and base number retentivity, and low average fuel consumption; the noise of an engine is lowered; the vibration of the engine is reduced; the operation is relatively stable; and the driving control performance is obviously improved.

The present invention discloses a lubricating oil detergent dispersant and a preparation method thereof. The dispersant is alkyl-2-hydroxy-3-naphthoate calcium. A structural formula of the dispersant is shown in the description wherein R is an alkyl group having 10-30 carbon atoms. The preparation method comprises the following steps: long-chain alkyl-2-hydroxy-3-naphthoic acids are used as a raw material and subjected to a carbonation reaction under an action of Ca (OH)2 and with an inlet of CO2 to prepare the alkyl-2-hydroxy-3-naphthoate calcium products having alkaline reserves. The prepared dispersant has the same excellent high-temperature detergency as the existing commercial products, and is superior in low-temperature dispersibility compared with the existing products.

The invention discloses antioxidant lubricating oil for an automobile. The antioxidant lubricating oil for the automobile comprises the following raw materials by weight percentage: 1-5% of dialkenyl succinimide, 0.2-2.0% of alkylated diphenylamine, 1-3% of lead naphthenate, 0.5-2.0% of polymethacrylate, 3-15% of petroleum barium borate, 1-3% of poly alpha olefin, 1-3% of methylsilicone oil, 1-3% of anitimony diisopropyl dithio phosphate, 1-3% of glyceryl monooleate and the balance of base oil. Compared with the prior art, the antioxidant lubricating oil for the automobile has the advantages that the high-temperature cleanliness, the anti-oxidation stability, the antifriction and abrasive resistance, and the base value retainability are excellent, the average oil consumption is low, the engine noise and engine vibration are reduced, the automobile runs more stably, and the driving control performance is remarkably improved.

The invention provides a diesel engine oil composition and a preparation method thereof. The diesel engine oil composition comprises a viscosity index improver, a clearing agent, a dispersing agent, an antioxidant, an anti-wear agent, a pour point depressant and a main amount of lubricating base oil. The structure of the viscosity index improver is shown as a general formula (I) shown in the specification, wherein the definition of each group is shown in the specification. The diesel engine oil composition disclosed by the invention has excellent high-temperature detergency, soot dispersibility, oxidation resistance, wear resistance, metal corrosion inhibition performance and low-temperature performance, can meet the requirements of API CI-4 specifications, and meanwhile, has reduced phosphorus content, and can meet the requirements of environment-friendly emission.

The invention provides a gasoline engine oil composition and a preparation method thereof. The gasoline engine oil composition comprises a viscosity index improver, a clearing agent, a dispersing agent, an antioxidant, an oiliness agent, a pour point depressant and a main amount of lubricating base oil. The structure of the viscosity index improver is shown as a general formula (I) shown in the specification, wherein the definition of each group is shown in the specification. The gasoline engine oil composition has excellent high-temperature detergency, low-temperature dispersibility, oxidation resistance and wear resistance, and can meet the technical requirements of API gasoline engine oil. According to the gasoline engine oil composition, the low-speed preignition phenomenon of gasolineengine oil can be reduced, and super knocking resistance of the gasoline engine oil is improved.

The invention relates to a heavy-loading CNG natural gas engine oil complexing agent and a preparation method and application thereof. The raw materials of the complexing agent comprise base zinc saltof dioctyl thiophosphate, super-alkali-value synthesis calcium sulfonate, alkylated diphenylamine, amidogen thioester, super-alkali-value synthesis magnesium sulfonate, high-molecular-weight ashlessdispersing agent and single alkenyl succinimide. The method comprises the steps that the raw materials are weighed, added to a blending kettle, heated to 60-70 DEG C, stirred for 2-3 hours at normal pressure and filtered, and the heavy-loading CNG natural gas engine oil complexing agent is obtained. The heavy-loading CNG natural gas engine oil complexing agent and the preparation method and application thereof have the advantages that the preparation method is easy to operate and the agent is easy to prepare. The complexing agent can distinctly meet the requirements in the second, third and fourth type of oil and is suitable for meeting the performance requirement of large-sized fixed and large-power mobile CNG natural gas engines.

The invention relates to an engine lubricating oil additive composition, which comprises the following components: (A) at least three metal detergents, and (B) at least two ash-free dispersants, wherein the component (A) accounts for 35.0-55.0% of the total weight of the composition, and the component (B) accounts for 45.0-65.0% of the total weight of the composition. According to the present invention, the performances of the engine oil blended from 10.0-12.0% of the prepared cleaning dispersing additive composition and other functional additives meet the VWTDI bench test limitation requirements in ACEA-2012A1/B1, A3/B4 and A5/B5; the composition is suitable for the production of lubricating oil with severe high-temperature cleaning performance requirements, and is especially suitable forthe blending of turbocharged direct-injection light-duty diesel engine lubricating oils; and the oil blended by the additive composition has excellent high-temperature detergency and excellent medium-low temperature dispersibility, and can effectively suppress the generation of high-temperature deposits on the engine piston, particularly the top portion of the piston, and soot wear.

A preparation method of an alkaline oleate detergent, comprising the following steps: adding an organic solvent, an alcohol accelerator, calcium hydroxide or calcium oxide and water into a flask, turning on the stirrer, and raising the temperature to 30-40°C, After stirring evenly, add oleic acid and base oil to carry out neutralization reaction, maintain the reaction temperature at 40-60°C, and react for 0.5h-1h; , maintain the reaction temperature at 40-60°C; after the high alkalinity reaction, raise the temperature of the mixture to 110-130°C to remove the alcohol accelerator and water, then cool down to 60-80°C, add an organic solvent to dilute and centrifuge to remove The slag is then distilled under reduced pressure to remove the organic solvent to obtain the product, which is stable at high temperature, has no biological toxicity and has good environmental compatibility, excellent high temperature detergency, good storage stability, abrasion resistance and water separation.

The invention provides a diesel engine oil composition and a preparation method thereof. The diesel engine oil composition comprises a viscosity index improver, a clearing agent, a dispersing agent, an antioxidant, an anti-wear agent, a pour point depressant and a main amount of lubricating base oil. The structure of the viscosity index improver is shown as a general formula (I) or (II) shown in the specification, wherein the definition of each group is shown in the specification. The diesel engine oil composition disclosed by the invention has excellent high-temperature detergency, soot dispersibility, oxidation resistance, wear resistance, metal corrosion inhibition performance and low-temperature performance, can meet the requirements of API CI-4 specifications, and meanwhile, has reduced phosphorus content, and can meet the requirements of environment-friendly emission.

The invention discloses environment-friendly lubricating oil for an automobile. The environment-friendly lubricating oil for the automobile is prepared from the following raw materials by weight percentage: 0.8-1.3% of high-base-number synthesized calcium sulfonate, 0.2-2.0% of alkylated diphenylamine, 1.0-3% of tricresyl phosphate, 0.5-2.0% of a mixture of ethylene propylene polymer and polymethacrylate, 0.015-1.5% of antirust agent, 1-3% of vinyl acetate, 1-3% of methylsilicone oil, 1-3% of anitimony diisopropyl dithio phosphate, 1-3% of glycol ester monooleate and the balance of base oil. Compared with the prior art, the environment-friendly lubricating oil for the automobile has the benefits that the high-temperature cleanliness, the anti-oxidation stability, the antifriction and abrasive resistance, and the base value retainability are excellent, the average oil consumption is low, the engine noise and the engine vibration are reduced, the automobile runs more stably, and the driving control performance is remarkably improved.