CN102690708A - Lubricant composition for ethanol engine - Google Patents
Lubricant composition for ethanol engine Download PDFInfo
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- CN102690708A CN102690708A CN2011100718009A CN201110071800A CN102690708A CN 102690708 A CN102690708 A CN 102690708A CN 2011100718009 A CN2011100718009 A CN 2011100718009A CN 201110071800 A CN201110071800 A CN 201110071800A CN 102690708 A CN102690708 A CN 102690708A
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Abstract
The invention discloses a lubricant composition for an ethanol engine. The lubricant composition comprises A) a composite antioxidant comprising at least components of 1, an alkylated diphenylamine antioxidant, 2, a thiophenolic ester antioxidant and 3, an unessential phenolic thioether antioxidant, B) polyisobutylene succinimide, C) a mixture of calcium sulfonate and sodium sulfonate, D) at least one zinc dialkyl dithiophosphate, E) one or more dialkyl dithiocarbamates, F) one or more metal deactivators, and G) a main amount of lubricating base oil. The lubricant composition has a synergistic effect of the additives, can satisfy high-temperature antioxidation requirements of lubricating oil for an ethanol engine, and has excellent piston cleanliness, high/low-temperature wear resistance and a good viscosity increasing control capacity.
Description
Technical field
The present invention relates to lubricating oil composition, relate in particular to a kind of lubricating oil composition that is used for ethanol engine.
Background technology
In today of international energy anxiety, ethanol petrol receives global concern as alternative fuel, and China various places are widely used.Because ethanol petrol has environmental protection, energy-conservation superperformance, help alleviating the petroleum resources shortage, improve atmospheric environment, therefore, promote the use of vehicle-use alcohol gasoline and be a strategic act of country, significant to the Sustainable development of national economy.For long-term the maintenance used the good running status of alcohol fuel motor car engine, it is most important to research and develop new special engine oil to the alcohol fuel characteristic.
Vehicle-use alcohol gasoline is a kind of new automobile fuel that is mixed denatured fuel ethanol and gasoline by a certain percentage and forms.Ethanol petrol fuel more is prone to mover is caused corrosion; Acidic substance such as its combustion products acetate, sulfide are scurried in the lubricating oil with fuel, can cause that oil oxidation is rotten, the rapid reduction of base number; Greasy filth increases the weight of, and also can cause the wearing and tearing of engine piston ring and cylinder wall simultaneously.Therefore oxidation inhibitor suppresses the rotten of oil product to be used to use the engine oil of alcohol fuel must use efficiently.Compare with the mover that only uses gasoline; The mover that use contains alcohol fuel (10%-100% ethanol) has partly produced significant wearing and tearing at cylinder sleeve of engine, piston-ring and air inlet and exhaust valve, therefore anti-oxidant, antirust, the abrasion resistance of ethanol petrol engine oil is had relatively high expectations.Seek more efficiently antioxidant additive and research and development application in the high performance engine oil of alcohol fuel mover, be the target that those skilled in the art make great efforts always.
CN100460490C has introduced a kind of by alkylated diphenylamine and the composite antioxidant component of phenolic ester, the resistance of oxidation of the raising oil product that it can be by a relatively large margin.
US20090111722A has introduced a kind of lubricating oil composition, the abrasion protection of the mover when said composition is used to use alcohol fuel.What said composition comprised spends base number calcium salt purification agent, the engine scuffing that causes in the time of can reducing the use alcohol fuel, the drain period of prolongation lubricating oil.
Summary of the invention
The present invention provides a kind of ethanol engine lubricating oil composition, and said composition has excellent antioxidant property, provides good high-temperature peace and quiet, wear resistance simultaneously.
Ethanol engine lubricating oil composition provided by the invention comprises following component:
A＞composite antioxidant comprises following component at least: alkylated diphenylamine oxidation inhibitor, sulfophenates type oxidation inhibitor, non-essential thioether phenol type antioxidant;
B＞polyisobutene succinimide ashless dispersant;
The mixture of C＞calcium sulphonate and sodium sulfonate;
D＞at least a zinc dialkyl dithiophosphate;
E＞one or more dialkyl dithio amino formates;
F＞one or more metal passivators;
The lubricant base of G＞main amount;
In lubricating oil composition of the present invention, can also there be other additive, like rust-preventive agent, pour point depressant, viscosity index improver (VM), kilfoam etc.
Specifically, ethanol engine lubricating oil composition of the present invention comprises following component:
A＞composite antioxidant comprises following component at least: (1) alkylated diphenylamine oxidation inhibitor; (2) sulfophenates type oxidation inhibitor; (3) non-essential thioether phenol type antioxidant.
(1) the alkylated diphenylamine structural formula is:
R wherein
1, R
2H or C respectively do for oneself
1-C
12Alkyl, preferred C
4-C
9Alkyl, the position at place are in amino contraposition or ortho position, the preferably tertiary butyl and/or iso-octyl.
Alkylated diphenylamine accounts for the 50%-95% of total mass in the composite antioxidant, is preferably 60%-90%.IRGANOX L-01, IRGANOX L-57 that alkylated diphenylamine can select for use BASF Aktiengesellschaft to produce; The T534 that Beijing Xing Pu company produces; The LZ5150A that the blue refining of Lu Borun additive ltd produces; VANLUBE NA, VANLUBE 961, dioctyl diphenylamine VANLUBE 81 that U.S. Vanderbilt company produces, it is right that TUV chemical company produces, to ' di-iso-octyldiphenylamine RC7001.
Preferred alkylated diphenylamine oxidation inhibitor is the tertiary butyl/di-iso-octyldiphenylamine (the for example T534 of Beijing Xing Pu company production).
(2) structural formula of sulfophenates type oxidation inhibitor is:
R wherein
3, R
4H or C respectively do for oneself
1-C
12Alkyl, preferred C
1-C
9Alkyl is preferably the methyl and/or the tertiary butyl.Wherein m, n are the integer between the 0-10, are preferably 0,1 or 2.
Sulfophenates type oxidation inhibitor accounts for the 5%-50% of total mass in the composite antioxidant, is preferably 8%-30%.Preferred sulfophenates type oxidation inhibitor is 2,2 '-thiobis [3-(3, the 5-di-tert-butyl-hydroxy phenyl) ethyl propionate] (for example the Sichuan oxidation inhibitor 1035 produced of industry chemical industry ltd forever, the IRGANOX L115 that BASF Aktiengesellschaft produces).
(3) structural formula of thioether phenol type antioxidant is:
R wherein
5, R
6H or C respectively do for oneself
1-C
12Alkyl, preferred C
1-C
9Alkyl is preferably the methyl and/or the tertiary butyl.Wherein q is the integer between the 0-10, preferred 0,1 or 2.
The thioether phenol type antioxidant accounts for the 0-20% of total mass in the composite antioxidant, is preferably 1%-15%.Preferred thioether phenol type antioxidant is thiobis-(3,5-di-t-butyl-4-hydroxyl benzyl) (for example the methene 4426-S that produces of Changzhou Ling Chi chemical company, the Lowinox TBP-6 that U.S. big lake company produces, the Irganox 1081 that BASF Aktiengesellschaft produces).
In preferred embodiment, composite antioxidant of the present invention is composed of the following components: (1) tertiary butyl/di-iso-octyldiphenylamine; (2) 2,2 '-thiobis [3-(3, the 5-di-tert-butyl-hydroxy phenyl) ethyl propionate]; (3) thiobis-(3,5-di-t-butyl-4-hydroxyl benzyl).
Component A composite antioxidant accounts for the 0.1%-10% of lubricating oil composition total mass of the present invention, preferred 0.2%-6%, preferably 0.3%-5%.
B＞be selected from polyisobutene succinimide ashless dispersant.
The number-average molecular weight of polyisobutene in the polyisobutene succinimide ashless dispersant (PIB) part is 800-4000, preferred 900-3000, preferably 1000-2400.The T161 that this component can select for use Suzhou specialty oil products factory to produce; T161A, T161B that Jinzhou Petrochemical Company additive factory produces; The LZL157 that the blue refining of Lu Borun additive ltd produces; LZ6418, LZ6420 that Lubrizol Corporation produces, the Hitec646 that Afton Corporation produces etc.
B component accounts for the 0.5%-10% of lubricating oil composition total mass of the present invention, preferred 1.5%-8%, preferably 3%-6%.
C＞be selected from the mixture of calcium sulphonate and sodium sulfonate, preferably base number is that calcium sulfonate with high base number and the base number of (200-450) mgKOH/g are the mixture of the sulfonate with high base number sodium of (200-450) mgKOH/g, the mass ratio between the two is between 1: 1 to 4: 1.Component C can select marine T101, T102, the T103 that additive factory produces that refine for use; The T106 that Jinzhou Petrochemical Company additive factory produces; LZ6478, LZ6446, LZ75, LZ78 that Lubrizol Corporation produces; Hitec611, Hitec614 that Afton Corporation produces, the KT5448 that Jinzhou Kangtai Lube Additive Co., Ltd. produces, the OLOA246S that Chevron Oronite Company produces, OLOA249S etc.
Component C accounts for 0.2%-10%, preferred 0.8%-8%, the preferably 1.2%-6% of lubricating oil composition total mass.
One or more of D＞be selected from zinc dialkyl dithiophosphate; Alkyl in the said zinc dialkyl dithiophosphate is the alkyl that contains 2 to 12 carbon atoms; The alkyl that preferably contains 2 to 8 carbon atoms can be ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, sec.-butyl, n-pentyl, isopentyl, n-hexyl, isohexyl, n-octyl, 2-ethylhexyl, cyclohexyl, methylcyclopentyl.T202, T203 that zinc dialkyl dithiophosphate can select for use WUXI SOUTH PETROLEUM ADDITIVE Co., LTD. to produce; Primary alkyl T202, primary alkyl T203, brothers alkyl T204, secondary alkyl T205 that Jinzhou Petrochemical Company additive factory produces; LZ1371, LZ1375 that Lubrizol company produces; C9417, C9425, C9426 that Infineum company produces, the Hitec7169 that Afton company produces, Hitec1656 etc.
Component D accounts for 0.1%-5%, preferred 0.3%-3%, the preferably 0.5%-2% of lubricating oil composition total mass.
One or more of E＞be selected from dialkyl dithio amino formate; Alkyl in the said dialkyl dithio amino formate is the alkyl that contains 2 to 12 carbon atoms; The alkyl that preferably contains 2 to 8 carbon atoms can be ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, sec.-butyl, n-pentyl, isopentyl, n-hexyl, isohexyl, n-octyl, 2-ethylhexyl.The T323 that dialkyl dithio amino formate can select for use Jinzhou emerging petroleum additive Ltd to produce, 7723 etc. of Vanderbilt company.
Component E accounts for the 0.02%-5% of lubricating oil composition total mass, and preferred amounts is 0.05%-2%, is preferably 0.1%-0.5%.
One or more of F＞be selected from metal passivators such as triazole derivative, thiazole derivative and thiadiazoles derivative, metal passivator commonly used comprises benzothiazole, tolyl-triazole, octyl group triazole, 2-mercaptobenzothiazole, 2,5-dimercapto-1; 3,4-thiadiazoles, 2-sulfydryl-5-hydrocarbon replace-1,3; 4-thiadiazoles, 2-dimercapto-5-dithio-1,3, the 4-thiadiazoles; N; N-dihexyl aminomethylene 124 Triazole, 2-sulfydryl diazosulfide etc., trade names have T551, T561, T706 etc., can select T551 that Jinzhou Kangtai Lube Additive Co., Ltd. produces, T561, T706 etc. for use.
Component F accounts for the 0.01%-0.5% of lubricating oil composition total mass, and preferred amounts is 0.03%-0.25%, is preferably 0.05%-0.15%.
The lubricant base of G＞main amount can be selected from MO and ucon oil or their mixture.
Said MO can be from lighting end MO to last running MO on viscosity; Comprise Witco 70 and hydrorefined, that solvent treatment is crossed alkane, cycloalkanes and mixing alkane-cycloalkanes type mineral lubricating oils; Usually be divided into I, II, III class base oil; Common trade names comprise I class 150SN, 600SN, HVI 500, HVI 750, II class 100N, 150N, III class base oil S-8 etc.
Ucon oil comprises polymerization hydrocarbon ils, korenyl and verivate thereof; The concrete example of polymerization hydrocarbon ils includes but not limited to polybutylenes, Vestolen PP 7052, propylene-isobutylene copolymers, chlorating polybutylenes, gathers (1-hexene), gathers (1-octene), gathers (1-decene); Common trade names comprise PAO4, PAO6, PAO8, PAO10 etc.; The concrete example of korenyl and verivate thereof includes but not limited to that the verivate of korenyl comprises alkylating phenyl ether and alkylating diphenyl sulfide and verivate, analogue and homologue like dodecylbenzene, tetradecyl benzene, dinonyl benzene, two (2-ethylhexyl) benzene.The suitable type of another of ucon oil is an ester class oil; Comprise that ester or the complex ester that condensation reaction generates takes place for dicarboxylicacid (like phthalic acid, succsinic acid, alkyl succinic acid and alkenyl succinic acid, toxilic acid, nonane diacid, suberic acid, sebacic acid, FUMARIC ACID TECH GRADE, hexanodioic acid, linoleic acid dimer, propanedioic acid, alkyl propanedioic acid, thiazolinyl propanedioic acid) and various alcohol (like butanols, hexanol, dodecyl alcohol, 2-ethylhexyl alcohol, terepthaloyl moietie, Ucar 35).The object lesson of these esters includes but not limited to the 2-ethylhexyl diester of Polycizer W 260, sebacic acid two (2-ethylhexyl) ester, FUMARIC ACID TECH GRADE acid two just own esters, dioctyl sebacate, diisooctyl azelate, two different decayl esters of azelaic acid, DOP, didecyl phthalate, sebacic acid two (larane base) ester, linoleic acid dimer.
The suitable type of another of ucon oil is Fischer-Tropsch method synthetic hydrocarbon oil and lubricant base that this synthetic hydrocarbon oil is obtained through art breading such as hydroisomerizing, hydrogen cracking, dewaxings.
In lubricating oil composition of the present invention, can also there be other following additive:
Rust-preventive agent can use and be selected from nonionic polyoxyalkylene polyol and ester, polyoxyalkylene phenol negatively charged ion alkylsulphonic acid, aliphatics monoprotic acid or polyprotonic acid etc., and common example comprises dodecenylsuccinic acid, sorbitan list olein, sorbitan trioleate etc.
Pour point depressant or be called the lubricating oil improving agent that flows can reduce the minimum temperature that fluid flow maybe can be toppled over.Typical additive be alkyl be C8 to C18 dialkyl group fumarate/vinyl acetate copolymer, gather alkylmethacrylate etc., common trade names have T803, VX385, T148 etc.
The viscosity index improver that is fit to is partially hydrogenated multipolymer and the partially hydrogenated homopolymer of divinyl and isoprene and isoprene/Vinylstyrene of multipolymer, styrene/isoprene, phenylethylene/butadiene and the isoprene/butadiene of multipolymer, the Rohm tech inc/salt of polyisobutene, ethene and propylene and senior Q-alkene, the multipolymer that gathers alkylmethacrylate, methacrylic ester/salt copolymer, unsaturated dicarboxylic acid and vinyl compound, vinylbenzene and propenoate; Common trade names have LZ7070, LZ7065, LZ7067, the LZ7077 of Lubrizol company; The SV260 of Infineum company, SV261, T614 etc.They can constitute the 0.01%-20% of lubricating oil composition total mass.
Kilfoam can be selected the ZGK 5 type for use, like silicone oil or YSR 3286.
Lubricating oil composition of the present invention can adopt the preparation of following method: each additive (comprise in the composite antioxidant one or more) is joined respectively in the base oil or additive is mixed and made into enriched material join that heating mixes in the base oil again; Mixing temperature is between 40 ℃-90 ℃, and mixing time is between 1 hour-6 hours.
The present invention selects the multiple synergistic ashless oxidation inhibitor optimum combination that has for use; And composite suitable purification agent, dispersion agent and other functional additive; Produced significant antioxidant effect; Significantly strengthen high temperature wear resistance and piston cleansing performance, can satisfy the lubricating requirement of alcohol fuel mover.
Embodiment
Further describe characteristics of the present invention with instance below.
Composite antioxidant prepares routine 1-5
Oxidation inhibitor T534,1035, methene 4426-S are joined in the mediation container in proportion, and normal pressure heats 60 ℃-90 ℃ down, stirs 1 hour-2 hours, obtains the lurid thick liquid of homogeneous transparent and is component A composite antioxidant of the present invention.Composite antioxidant prepares the proportion of composing (massfraction) of routine 1-5 and sees table 1.
Table 1
| Sequence number | Oxidation inhibitor T534 | Oxidation inhibitor 1035 | Oxidation inhibitor methene 4426-S |
| Composite antioxidant preparation example 1 | 90％ | 10％ | |
| Composite antioxidant preparation example 2 | 80％ | 20％ | |
| Composite antioxidant preparation example 3 | 70％ | 30％ | |
| Composite antioxidant preparation example 4 | 70％ | 25％ | 5％ |
| Composite antioxidant preparation example 5 | 70％ | 20％ | 10％ |
Embodiment 1-5 and Comparative Examples 1,2,3-1,3-2,4
Embodiment 1-5 is the composition and the main character of lubricating oil composition of the present invention.Each component is joined in the mediation container in proportion, and normal pressure heats 45 ℃-80 ℃ down, stirs 1 hour-2 hours, prepares the lubricating oil composition that viscosity grade is 10W-40.In Comparative Examples 1,2,3-1, added single component oxidation inhibitor; Be respectively T534,1035, methene 4426-S; In Comparative Examples 3-2, added by the prepared two-pack composite antioxidant of patent CN100460490C method; Wherein embodiment 1 has prescription composition all identical except that oxidation inhibitor with Comparative Examples 1, embodiment 2 respectively with Comparative Examples 2; Embodiment 3 also has prescription all identical except that oxidation inhibitor with Comparative Examples 3-1,3-2 and forms, and embodiment 4 is to have added the second, n-butyl dithiocarbamate ester among the embodiment 4 with the difference of Comparative Examples 4, does not add the second, n-butyl dithiocarbamate ester in the Comparative Examples 4.Embodiment 1-5 and Comparative Examples 1,2,3-1,3-2,4 proportion of composing are separately seen table 2.
Embodiment 1-5 and Comparative Examples 1,2,3-1,3-2 and commercially available ethanol engine lubricating oil ASTMD4742 oxide thin layer test (TFOUT) and pressurization differential scanning calorimetric test (PDSC) have been carried out.The PDSC design temperature is 220 ℃, and concrete outcome is seen table 3.
Table 3
| Oil sample | TFOUT/min | PDSC/min |
| Embodiment 1 | 158 | 36.4 |
| Embodiment 2 | 153 | 39.1 |
| Embodiment 3 | 150 | 37.7 |
| Embodiment 4 | 163 | 37.2 |
| Embodiment 5 | 167 | 38.4 |
| Comparative Examples 1 | 148 | 31.8 |
| Comparative Examples 2 | 143 | 25.3 |
| Comparative Examples 3-1 | 139 | 27.9 |
| Comparative Examples 3-2 | 145 | 33.2 |
| Commercially available oily * | 131 | 18.3 |
* commercially available oil is Great Wall alcohol star ethanol petrol mover special oil SJ 10W-40.
Can find out that from table 3 lubricating oil composition has effectively improved the oxidation induction period of oil product.The TFOUT test shows that the oxidation induction period of embodiment has improved 15%～25% than corresponding Comparative Examples, and the PDSC test shows that the oxidation induction period of embodiment all is superior to Comparative Examples.
The high temperature wear resistance result is as shown in table 4, the high temperature that adopts the SRV frictional testing machines the to carry out oil product test of resistance to wearing, and test conditions is 120 ℃ of load 300N, frequency 50Hz, stroke 1mm, temperature.Can find out that from table 4 wear scar diameter of the embodiment of the invention is less than Comparative Examples, show fastness to wear preferably.
Table 4
| Oil sample | The SRV mill diameter/mm of class |
| Embodiment 1 | 0.66 |
| Embodiment 4 | 0.64 |
| Comparative Examples 1 | 0.69 |
| Comparative Examples 2 | 0.71 |
| Comparative Examples 3-1 | 0.69 |
| Comparative Examples 4 | 0.76 |
| Commercially available oily * | 0.70 |
* commercially available oil is Great Wall alcohol star ethanol petrol mover special oil SJ 10W-40
The result of embodiment 4 and Comparative Examples 4 is illustrated in and uses the dibutyl dithiocaarbamate ester to significantly improve the wear-resistant effect of high temperature of oil product in the lubricating oil composition.
Embodiment 6-9 and Comparative Examples 5-7
Embodiment 6-9 and each 50g of Comparative Examples 5-7 oil product are added 0.5ml hydrochloric acid respectively, adopt rotating bomb oxidation test to carry out oil product and wear out.Test apparatus holds bullet by pressure and forms with oil bath, and pressure appearance bullet becomes 30 ° of rotations with horizontal plane, 150 ℃ of oil bath constant temperature, and oxygenation 620kPa (90psi) at room temperature, 2h wears out.Weathering test repeats 6 times, obtains each 300ml of oil product and carries out the test of coking plate, and the prescription of embodiment and Comparative Examples is formed and coking plate test-results is seen table 5.What wherein add among the embodiment 6,7,8,9 is the mixture of calcium sulfonate with high base number and sulfonate with high base number sodium; What add respectively in the Comparative Examples 5,6 is calcium sulfonate with high base number, the sulfonate with high base number sodium of single component, and Comparative Examples 7 is not add in the Comparative Examples 7 metal passivator 2-sulfydryl diazosulfide with the difference of embodiment 6.
Table 5
The equipment that coking plate test is adopted is the 25B-19 type coking plate appearance that Japanese Meitech company produces, and the working conditions of this test simulation base chamber and cylinder liner piston ring oil circulation makes constantly the be heated process of oxidation coking of oil product of testing.Test period is 5h, and oily temperature is 150 ℃, and the plate temperature is 310 ℃.
Can know that by table 5 result the mixture of calcium sulfonate with high base number and sulfonate with high base number sodium is compared with independent calcium sulfonate with high base number or sulfonate with high base number sodium has better cleansing performance and acid neutralization capacity.The also beat all acid neutralization capacity that has obtained better detergency hold facility and Geng Gao behind the adding 2-sulfydryl diazosulfide.
Embodiment 10
BRT ball corrosion test is a replacement program II D engine rig test, mainly is used for the anticorrosive and corrosion ability of engine evaluated oil.In the whole 18 hours bench testing process, the Metal Ball of test oil protection continues contact acidic liq and air.After off-test, carry out the gray scale test, be used for confirming corroded area through Metal Ball plane of reflection intensity, thus the resistant to tarnishing ability of qualification test oil.Acetic acid/Hydrogen bromide/hydrochloric acid/deionized water injection speed is 0.19 milliliter/hour, and air draught is 40 ml/min, and oily temperature is 48 ℃.
The embodiment of the invention 7 has been carried out above-mentioned ball corrosion test, and the total basicnumber TBN of test oil is 8.7, and ball corrosion test result is 126, shows that the present composition has excellent base number hold facility and rust protection ability.
Claims (17)
1. ethanol engine lubricating oil composition comprises following component:
A＞composite antioxidant wherein comprises following component at least: alkylated diphenylamine oxidation inhibitor, and sulfophenates type oxidation inhibitor and non-essential thioether phenol type antioxidant, said composite antioxidant accounts for the 0.1%-10% of lubricating oil composition total mass;
B＞polyisobutene succinimide ashless dispersant accounts for the 0.5%-10% of lubricating oil composition total mass;
The mixture of C＞calcium sulphonate and sodium sulfonate accounts for the 0.2%-10% of lubricating oil composition total mass;
D＞at least a zinc dialkyl dithiophosphate accounts for the 0.1%-5% of lubricating oil composition total mass;
E＞one or more dialkyl dithio amino formates accounts for the 0.02%-5% of lubricating oil composition total mass;
F＞one or more metal passivators accounts for the 0.01%-0.5% of lubricating oil composition total mass;
The lubricant base of G＞main amount.
2. according to the described lubricating oil composition of claim 1, it is characterized in that the structural formula of said alkylated diphenylamine oxidation inhibitor is:
R wherein
1, R
2H or C respectively do for oneself
1-C
12Alkyl;
The structural formula of said sulfophenates type oxidation inhibitor is:
R wherein
3, R
4H or C respectively do for oneself
1-C
12Alkyl, m, n are the integer between the 0-10;
The structural formula of said thioether phenol type antioxidant is:
R wherein
5, R
6H or C respectively do for oneself
1-C
12Alkyl, q are the integer between the 0-10.
3. according to the described lubricating oil composition of claim 2, it is characterized in that described R
1, R
2Be C
4-C
9Alkyl, described R
3, R
4Be C
1-C
9Alkyl, described R
5, R
6Be C
1-C
9Alkyl.
4. according to the described lubricating oil composition of one of claim 1-3; It is characterized in that; Said alkylated diphenylamine accounts for the 50%-95% of composite antioxidant total mass; Said sulfophenates type oxidation inhibitor accounts for the 5%-50% of composite antioxidant total mass, and said thioether phenol type antioxidant accounts for the 0-20% of composite antioxidant total mass.
5. according to the described lubricating oil composition of one of claim 1-3; It is characterized in that; Said alkylated diphenylamine accounts for the 60%-90% of composite antioxidant total mass; Said sulfophenates type oxidation inhibitor accounts for the 8%-30% of composite antioxidant total mass, and said thioether phenol type antioxidant accounts for the 1%-15% of composite antioxidant total mass.
6. according to the described lubricating oil composition of one of claim 1-3, it is characterized in that said composite antioxidant accounts for the 0.2%-6% of lubricating oil composition total mass.
7. according to the described lubricating oil composition of claim 1, it is characterized in that the number-average molecular weight of polyisobutene part is 800-4000 in the said polyisobutene succinimide ashless dispersant.
8. according to the described lubricating oil composition of claim 1, it is characterized in that said polyisobutene succinimide ashless dispersant accounts for the 1.5%-8% of lubricating oil composition total mass.
9. according to the described lubricating oil composition of claim 1, it is characterized in that the mixture of said calcium sulphonate and sodium sulfonate is that base number is the calcium sulfonate with high base number of 200-450mgKOH/g and the mixture of the sulfonate with high base number sodium that base number is 200-450mgKOH/g.
10. according to the described lubricating oil composition of claim 1, it is characterized in that said is that mass ratio between calcium sulphonate and the sodium sulfonate is between 1: 1 to 4: 1.
11., it is characterized in that the mixture of said calcium sulphonate and sodium sulfonate accounts for the 0.8%-8% of lubricating oil composition total mass according to claim 1, one of 9 and 10 described lubricating oil compositions.
12., it is characterized in that the alkyl of said zinc dialkyl dithiophosphate is the alkyl that contains 2 to 12 carbon atoms according to the described lubricating oil composition of claim 1.
13., it is characterized in that said zinc dialkyl dithiophosphate accounts for the 0.3%-3% of lubricating oil composition total mass according to the described lubricating oil composition of claim 1.
14., it is characterized in that the alkyl of said dialkyl dithio amino formate is the alkyl that contains 2 to 12 carbon atoms according to the described lubricating oil composition of claim 1.
15., it is characterized in that said dialkyl dithio amino formate accounts for the 0.05%-2% of lubricating oil composition total mass according to the described lubricating oil composition of claim 1.
16., it is characterized in that said metal passivator is selected from one or more in triazole derivative, thiazole derivative and the thiadiazoles derivative according to the described lubricating oil composition of claim 1.
17., it is characterized in that said metal passivator accounts for the 0.03%-0.25% of lubricating oil composition total mass according to the described lubricating oil composition of claim 1.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104031720A (en) * | 2013-03-06 | 2014-09-10 | 中国石油天然气股份有限公司 | Engine oil additive composition using ethanol or ethanol gasoline as fuel |
| CN109652186A (en) * | 2019-02-21 | 2019-04-19 | 天津箭牌石油化工有限公司 | A kind of ethanol petrol engine special oil and preparation method thereof |
| CN109679708A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | Lubricant composition for ethanol engine and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104031720A (en) * | 2013-03-06 | 2014-09-10 | 中国石油天然气股份有限公司 | Engine oil additive composition using ethanol or ethanol gasoline as fuel |
| CN109679708A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | Lubricant composition for ethanol engine and preparation method thereof |
| CN109679708B (en) * | 2017-10-18 | 2022-07-15 | 中国石油化工股份有限公司 | Ethanol engine lubricating oil composition and preparation method thereof |
| CN109652186A (en) * | 2019-02-21 | 2019-04-19 | 天津箭牌石油化工有限公司 | A kind of ethanol petrol engine special oil and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102690708B (en) | 2013-12-25 |
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