CN105733779A - Low-viscosity anti-friction gasoline engine oil and preparation method thereof - Google Patents

Low-viscosity anti-friction gasoline engine oil and preparation method thereof Download PDF

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CN105733779A
CN105733779A CN201610173195.9A CN201610173195A CN105733779A CN 105733779 A CN105733779 A CN 105733779A CN 201610173195 A CN201610173195 A CN 201610173195A CN 105733779 A CN105733779 A CN 105733779A
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gasoline engine
engine oil
oil
low viscosity
friction
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CN105733779B (en
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黄毅
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Yantai Meiguang Automobile Products Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04Mixtures of base-materials and additives
    • C10M169/044Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/04Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/06Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02Hydroxy compounds
    • C10M2207/023Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/283Esters of polyhydroxy compounds
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/066Arylene diamines
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    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/086Imides
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/024Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amido or imido group
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044Sulfonic acids, Derivatives thereof, e.g. neutral salts
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/06Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
    • C10M2219/066Thiocarbamic type compounds
    • C10M2219/068Thiocarbamate metal salts
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    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04Phosphate esters
    • C10M2223/045Metal containing thio derivatives
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04Siloxanes with specific structure
    • C10M2229/041Siloxanes with specific structure containing aliphatic substituents
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02Pour-point; Viscosity index
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/25Internal-combustion engines
    • C10N2040/255Gasoline engines

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

The invention discloses a low-viscosity anti-friction gasoline engine oil and a preparation method thereof. The low-viscosity anti-friction gasoline engine oil is prepared from the following raw materials in parts by weight: 0.8-1.0 part of monoalkenyl succimide, 0.4-0.6 part of alkyl benzene calcium sulfonate, 0.1-0.3 part of 4,4'-dioctyl diphenylamine, 0.1-0.3 part of 2,5-di-tert-butyl hydroquinone, 1.5-4.5 parts of hydrogenated styrene-isoprene copolymer, 0.002-0.005 part of dimethyl silicone oil, 0.2-0.9 part of antiwear additive, 25-35 parts of pentaerythritol ester and 50-60 parts of poly-alpha-olefin. The low-viscosity anti-friction gasoline engine oil solves the problem of poor friction resistance in the gasoline engine oil in the prior art, greatly prolongs the service life, lowers the cost, and has the advantages of environment friendliness, energy saving,, wide application range and high practicality.

Description

A kind of low viscosity antifriction gasoline engine oil and preparation method thereof
Technical field
The present invention relates to technical field of lubricating oil, be a kind of low viscosity antifriction gasoline engine oil and preparation method thereof.
Background technology
For a long time, people pay close attention to the situation that I. C. engine oil both at home and abroad develops always: I. C. engine oil The main purpose of developmental research is to select suitable base oil, balances the consumption of various additive.By greatly Laboratory test, simulation test and the engine rig test of amount, reasonably determines internal combustion engine oil composition. Although the developing direction of control motor vehicle emission at present is mainly for the aromatic hydrocarbons in gasoline and lead, but less Fuel combustion means that less discharge, especially as the discharge of the carbon dioxide of main greenhouse gas Can be less.Therefore, one significant development trend of lubricating oil is to more low viscosity, harsher volatility Requirement, the energy-saving development of more preferable fuel economy.Save non-renewable petroleum resources to make either Gasoline engine oil or diesel oil are required for extending the oil draining period.
Electromotor is the heart of automobile, has the metal surface of many mutually fricting movements, these parts in it Movement velocity is fast, environment is poor, and operating temperature is up to 400-600 DEG C, it is necessary to use machine oil to play electromotor To following effect: 1. lubrication anti-attrition: between piston and cylinder, all also exist between main shaft and bearing shell quickly Relative slip, the abrasion that part to be prevented is too fast, then need to set up oil film between two slidingsurfaces, The piece surface relatively slided is separated by the oil film having adequate thickness, thus reaches to reduce the purpose of abrasion; 2. cool: machine oil heat can be taken back sump distribute again to air help water tank cooling start Machine.3. clean cleaning: machine oil can be by the carbide on engine part, greasy filth, wear metal granule Sump is taken back in logical circulation, by the flowing of lubricating oil, rinses the foul produced on part time job face.
The most more common machine oil is mainly mineral oil and artificial oil, and this two kinds of machine oil all includes base Plinth oil and additive, its mineral oil in fluid is made up of mineral base oil and additive mixture.Although mineral oil is deposited In a lot of shortcomings, but due to its wide material sources, cost is relatively low, is the most still widely used, The component content of those skilled in the art's ratio and additive by adjusting mineral base oil improves machine The performance of oil, but due to existing organic additive under high-temperature and high-pressure conditions can decomposition failure, inorganic add Add agent due to granule bigger importing frictional interface poor performance, thus affect the performance of engine performance.
Summary of the invention
For the deficiencies in the prior art, one of the technical problem to be solved is to provide one Plant low viscosity antifriction gasoline engine oil.
The two of the technical problem to be solved are to provide the preparation of a kind of low viscosity antifriction gasoline engine oil Method.
The present invention seeks to be achieved through the following technical solutions:
A kind of low viscosity antifriction gasoline engine oil, is made up of the raw material of following weight parts: mono alkenyl succinyl is sub- Amine 0.8-1.0 part, alkyl benzene calcium sulfonate 0.4-0.6 part, 4,4'-dioctyl diphenylamine 0.1-0.3 part, 2,5- Di-tert-butyl hydroquinone's 0.1-0.3 part, hydrogenated styrene isoprene copolymer 1.5-4.5 part, diformazan Base silicone oil 0.002-0.005 part, antiwear additive 0.2-0.9 part, pentaerythritol ester 25-35 part, poly alpha olefin 50-60 part.
Described antiwear additive by amido diisopropyl disulfide for phosphoric acid tungsten, N, N-bis-(2-ethylhexyl) two Thiocarbamic acid molybdenum, N, N-bis-(13) alkyl molybdenum dithiocarbamate mixes, described amine Base diisopropyl disulfide is for phosphoric acid tungsten, N, N-bis-(2-ethylhexyl) molybdenum dithiocarbamate, N, N- The mass ratio of two (13) alkyl molybdenum dithiocarbamate is (1-3): (1-3): (1-3).
Preferably, described pentaerythritol ester is by 40-60wt% tetramethylolmethane four pelargonate and 40-60wt% Pentaerythritol tetramyristate forms.
Present invention also offers the preparation method of above-mentioned low viscosity antifriction gasoline engine oil: by mono alkenyl succinyl Imines, alkyl benzene calcium sulfonate, 4,4'-dioctyl diphenylamine, 2,5 di tert butyl hydroquinone, hydrogenation of benzene second Alkene isoprene copolymer, dimethicone, antiwear additive, pentaerythritol ester, di n octyl adipate, Poly alpha olefin adds mix homogeneously in mediation still, obtains described low viscosity antifriction gasoline engine oil.
Low viscosity antifriction gasoline engine oil of the present invention solves gasoline engine oil abrasion resistance present in prior art The problem of difference, substantially prolongs the service life of gasoline engine oil, reduces cost, and environmental protection and energy saving, suitable Wide by scope, very useful.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further, the following stated, only to the present invention Preferred embodiment, not does the restriction of other forms, any technology being familiar with this specialty to the present invention Personnel are changed to the Equivalent embodiments changed on an equal basis possibly also with the technology contents of the disclosure above.Every Without departing from the present invention program content, any letter following example done according to the technical spirit of the present invention Single amendment or equivalent variations, all fall within protection scope of the present invention.
Embodiment each raw material introduction:
Mono alkenyl succimide, its structural formula is as follows:
Wherein, PIB be molecular weight be the polyisobutylene of 1000, n=3.
Hydrogenated styrene isoprene copolymer is hydrogenated polystyrene-b-phenylethylene/butadiene/isoprene Random copolymer, specifically uses number of patent application: in 201410115135.2 prepared by the method for embodiment 1.
Dimethicone, No. CAS: 63148-62-9, use DOW CORNING PMX-200 conventional viscosity froth breaking Agent dimethicone, viscosity 350cs.
N, N-bis-(2-ethylhexyl) molybdenum dithiocarbamate, its structural formula is as follows: its structural formula is such as Under:
Wherein R is 2-ethylhexyl.
N, N-bis-(13) alkyl molybdenum dithiocarbamate, its structural formula is as follows: its structural formula is as follows:
Wherein R is straight chain tridecyl.
Amido diisopropyl disulfide is for phosphoric acid tungsten, and its structural formula is as follows:
Poly alpha olefin, uses number of patent application: in 02817015.6 prepared by the method for embodiment 1.
Tetramethylolmethane four pelargonate, No. CAS: 14450-05-6.
Pentaerythritol tetramyristate, No. CAS: 18641-59-3.
Alkyl benzene calcium sulfonate uses number of patent application: in 200810011923.1 prepared by the method for embodiment 1.
4,4'-dioctyl diphenylamines, No. CAS: 101-67-7.
2,5-di-tert-butyl hydroquinones, No. CAS: 88-58-4.
Embodiment 1
Low viscosity antifriction gasoline engine oil raw material (weight portion): mono alkenyl succimide 0.9 part, alkyl Benzenesulfonic acid calcium 0.5 part, 4,4'-dioctyl diphenylamine 0.2 part, 2,5 di tert butyl hydroquinone 0.2 part, Hydrogenated styrene isoprene copolymer 3 parts, dimethicone 0.003 part, antiwear additive 0.6 part, season penta Four alcohol esters 30 parts, poly alpha olefin 55 parts.
Described antiwear additive by amido diisopropyl disulfide for phosphoric acid tungsten, N, N-bis-(2-ethylhexyl) two Thiocarbamic acid molybdenum, N, N-bis-(13) alkyl molybdenum dithiocarbamate is 1:1 in mass ratio: 1 is uniformly mixed and obtains.
Described pentaerythritol ester is by 50wt% tetramethylolmethane four pelargonate and 50wt% tetramethylolmethane four lima bean Cool acid esters is uniformly mixed and obtains.
The preparation method of low viscosity antifriction gasoline engine oil: poly alpha olefin is added and is in harmonious proportion in still, be warming up to 85 DEG C, adding hydrogenated styrene isoprene copolymer, 300 revs/min are stirred 30 minutes;Add season penta Four alcohol esters, keeping temperature is 60 DEG C, addition mono alkenyl succimide, alkyl benzene calcium sulfonate, 300 turns/ Divide stirring 30 minutes;Add 4,4'-dioctyl diphenylamine, 2,5 di tert butyl hydroquinone, antiwear additive, Dimethicone, 300 revs/min are stirred 60 minutes, are cooled to room temperature.Obtain the low of embodiment 1 preparation Viscosity antifriction gasoline engine oil.
Embodiment 2
Substantially the same manner as Example 1, differ only in: described antiwear additive is by N, N-bis-(2-ethyl Hexyl) molybdenum dithiocarbamate, N, N-bis-(13) alkyl molybdenum dithiocarbamate in mass ratio It is uniformly mixed for 1:1 and obtains.Obtain the low viscosity antifriction gasoline engine oil of embodiment 2.
Embodiment 3
Substantially the same manner as Example 1, differ only in: described antiwear additive is by amido diisopropyl two D2EHDTPA tungsten, N, N-bis-(13) alkyl molybdenum dithiocarbamate stirs for 1:1 in mass ratio Mix homogeneously obtains.Obtain the low viscosity antifriction gasoline engine oil of embodiment 3.
Embodiment 4
Substantially the same manner as Example 1, differ only in: described antiwear additive is by amido diisopropyl two D2EHDTPA tungsten, N, N-bis-(2-ethylhexyl) molybdenum dithiocarbamate stirs for 1:1 in mass ratio Mix homogeneously obtains.Obtain the low viscosity antifriction gasoline engine oil of embodiment 4.
Embodiment 5
Substantially the same manner as Example 1, differ only in: described pentaerythritol ester is only tetramethylolmethane Four pelargonates.Obtain the low viscosity antifriction gasoline engine oil of embodiment 5.
Embodiment 6
Substantially the same manner as Example 1, differ only in: described pentaerythritol ester is only tetramethylolmethane Four myristinates.Obtain the low viscosity antifriction gasoline engine oil of embodiment 6.
Test case 1
Testing the low viscosity antifriction gasoline engine oil index of embodiment 1, concrete test result is shown in Table 1.
Table 1: ultra-low viscosity gasoline engine oil index test result table
Test case 2
The low viscosity antifriction gasoline engine oil serviceability of embodiment 1-6 is tested, oil product wear scar diameter Be four ball frictional testing machine test datas with average frictional force data, its test method according to GB/T12583-90, four-ball tester arranges condition for loading 40kgf, rotating speed 1500rpm, during operation Between 1h, initial temperature 40 DEG C.Concrete test result is shown in Table 2.
Table 2: low viscosity antifriction gasoline engine oil serviceability test result table
Comparing embodiment 1 and embodiment 2-4, embodiment 1 (amido diisopropyl disulfide for phosphoric acid tungsten, N, N-bis-(2-ethylhexyl) molybdenum dithiocarbamate, N, N-bis-(13) alkyl dithiocarbamates Formic acid molybdenum compounds) low viscosity antifriction gasoline engine oil serviceability is substantially better than embodiment 2-4 (amido two is different Propyl disulfide is for phosphoric acid tungsten, N, N-bis-(2-ethylhexyl) molybdenum dithiocarbamate, N, N-bis-(ten Three) in alkyl molybdenum dithiocarbamate, arbitrarily the two is compounding);Comparing embodiment 1 and embodiment 5-6, Embodiment 1 (tetramethylolmethane four pelargonate and pentaerythritol tetramyristate compound) low viscosity antifriction vapour Oil machine oil serviceability is substantially better than embodiment 5-6 (tetramethylolmethane four pelargonate and tetramethylolmethane four lima bean Single raw material in cool acid esters).

Claims (3)

1. a low viscosity antifriction gasoline engine oil, it is characterised in that be made up of the raw material of following weight parts: Mono alkenyl succimide 0.8-1.0 part, alkyl benzene calcium sulfonate 0.4-0.6 part, 4,4'-dioctyl diphenylamine 0.1-0.3 part, 2,5 di tert butyl hydroquinone 0.1-0.3 part, hydrogenated styrene isoprene copolymer 1.5-4.5 part, dimethicone 0.002-0.005 part, antiwear additive 0.2-0.9 part, pentaerythritol ester 25-35 Part, poly alpha olefin 50-60 part;
Described antiwear additive by amido diisopropyl disulfide for phosphoric acid tungsten, N, N-bis-(2-ethylhexyl) two Thiocarbamic acid molybdenum, N, N-bis-(13) alkyl molybdenum dithiocarbamate mixes, described amine Base diisopropyl disulfide is for phosphoric acid tungsten, N, N-bis-(2-ethylhexyl) molybdenum dithiocarbamate, N, N- The mass ratio of two (13) alkyl molybdenum dithiocarbamate is (1-3): (1-3): (1-3).
2. low viscosity antifriction gasoline engine oil as claimed in claim 1, it is characterised in that: described season penta Four alcohol esters are by 40-60wt% tetramethylolmethane four pelargonate and 40-60wt% pentaerythritol tetramyristate group Become.
3. the preparation method of the low viscosity antifriction gasoline engine oil as described in claim 1 and 2, its feature exists In: by mono alkenyl succimide, alkyl benzene calcium sulfonate, 4,4'-dioctyl diphenylamine, 2,5-di-t-butyl Hydroquinone, hydrogenated styrene isoprene copolymer, dimethicone, antiwear additive, pentaerythritol ester, Di n octyl adipate, poly alpha olefin add mix homogeneously in mediation still, obtain described low viscosity antifriction vapour Oil machine oil.
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US20130005624A1 (en) * 2010-03-12 2013-01-03 Idemitsu Kosan Co., Ltd. Lubricant composition
CN103113967A (en) * 2013-03-06 2013-05-22 广西大学 Environment-friendly and energy-saving gasoline engine lubricating oil
CN103666661A (en) * 2012-09-20 2014-03-26 中国石油化工股份有限公司 Petroleum-engine oil composition and application thereof
CN104046418A (en) * 2013-03-13 2014-09-17 中国石油天然气股份有限公司 Light-load diesel oil/gasoline car engine lubricating oil composition

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