CN101283079B

CN101283079B - Lubricant oil composition

Info

Publication number: CN101283079B
Application number: CN2006800375881A
Authority: CN
Inventors: 小松原仁; 松井茂树
Original assignee: Nippon Oil Corp
Current assignee: Eneos Corp
Priority date: 2005-08-15
Filing date: 2006-08-14
Publication date: 2013-02-06
Anticipated expiration: 2026-08-14
Also published as: EP1918356A1; EP1918356B1; JP5030402B2; JP2007051178A; CN101283079A; US20080139424A1; WO2007021014A1; EP1918356A4

Abstract

Disclosed is a lubricant oil composition which has an excellent preventive property on the abrasion of a metal pulley or a metal belt and an excellent initial shudder preventing property, can exert a shudder preventing property for a prolonged period of time, and is suitable for use in a continuously variable transmission with a sliding-controlled wet clutch and a metal belt. A lubricant oil composition comprising (A) alkylsalicylic acid metal salts composed of 85-100 mol% of a monoalkylsalicylic acid metal salt, 0-15 mol% of a dialkylsalicylic acid metal salt and 40-100 mol% of a 3-alkylsalicylic acid metal salt, each based on the total amount of the composition, and/or a (per)basic salt thereof; (B) a specific nitrogen compound, and (C) a phosphorus-containing anti-abrasion agent in a lubricant base oil.

Description

Lubricating oil composition

[technical field]

The present invention relates to be suitable for be equipped with the lubricating oil composition of the variator of Sliding Control rotating vane type clutch coupling, relate more particularly to be suitable for be equipped with the transmission oil composition of the buncher of Sliding Control rotating vane type clutch coupling and metal strip, particularly wet starting clutch, because said composition contains specific salicylate purification agent, therefore said composition has the abrasion resistance of excellent variator metallic sheave and metal strip and the excellent initial antidetonation performance of quivering, and can keep for a long time this antidetonation performance of quivering.

[background technology]

Recently required automatic transmission lightweight and miniaturization and sought be improved aspect the relevant power transmitting capacity of the power output that increases with engine that this variator is used in combination.Therefore, the lubricating oil that requires to be used for these variators has the lubricity of raising, namely prevents the performance of the wearing and tearing on bearing and the gear surface.The torque that metal band type stepless speed variator has also transmitted between metallic sheave and metal strip because the power that engine increases is exported is improved.Therefore, the lubricating oil that require to be used for these variators have higher torque capacity and prevent metallic sheave and the metallic surface of metal strip between the performance of wearing and tearing.

The automatic transmission or the buncher that have the lock-up clutch low speed slip (sliding latch control) of installing in some control torque converter.To such an extent as to improving these variators with sliding latch control can change to improve the driving sensation and motor torque effectively can be sent to transmission mechanism by absorbing torque.Some bunchers are equipped with wet starting clutch, make at first this clutch slip then make its coupling so that vehicle starts reposefully from stopping, and this is so-called Sliding Control.Require to be used for that wherein the lubricating oil that lock-up clutch or starting clutch carry out the variator of Sliding Control is had quiver performance and can keep for a long time this antidetonation performance of quivering of excellent initial antidetonation.

In these cases, disclose the transmission oil composition, wherein added best friction modifier, metal detergent, ashless dispersant and anti-wear agent in order to remain on the rubbing characteristics of lock-up clutch under the good order and condition and the lasting initial antidetonation performance (referring to following patent documentation 1-6) of quivering is provided.

For example, patent documentation 1 discloses the transmission oil composition that the specific calcium salicylate that comprises the specified quantitative of respectively doing for oneself, SP base stage are pressed the ashless dispersant of additive, specific succinimide and boracic, said composition demonstrate excellent performance for example excellent antidetonation quiver performance and lasting fatigue lifetime.Patent documentation 2 discloses the succinimide that comprises metal salts of organic acids, anti-wear agent and boracic with ad hoc structure as the buncher lubricating oil composition of necessary component, the antidetonation that said composition has higher intermetallic frictional coefficient and the slide control mechanism simultaneously performance of quivering.Patent documentation 3 discloses the durable buncher lubricating oil composition that comprises calcium salicylate, phosphorous anti-wear agent, friction modifier and decentralized viscosity index improver, the antidetonation that said composition has higher intermetallic frictional coefficient and the slide control mechanism simultaneously performance of quivering.Patent documentation 4 discloses branching lipid acid and the condenses of amine and the lubricating oil composition of amine antioxidants that comprises dithio carbamate compounds, has 8-30 carbon atom, performance that said composition has excellent and lasting antidetonation is quivered.Patent documentation 5 discloses and has comprised calcium sulphonate, phosphorous acid ester and further comprise sarcosine derivative or the automatic transmission fluid composition of the reaction product of carboxylic acid and amine, the antidetonation that said composition has a lasting sliding latch mechanism quiver performance and the lasting performance that prevents the scraping noise in the variable v-belt drive.Patent documentation 6 discloses the automatic transmission fluid composition of the specific azochlorosulfonate acid alkali earth metal salt that comprises specified quantitative, and said composition is excellent and have a lasting antidetonation performance of quivering on oxidative stability as the automatic transmission liquid that is used for having slide control mechanism.

Yet, the result who studies as the present inventor, find to use sulfonate detergent still to be not enough to improve the initial antidetonation performance of quivering as metal detergent, particularly when using monoalkyl type salicylate purification agent, the gained lubricating oil composition is excellent on initial antidetonation is quivered performance, but may produce therein wearing and tearing or for example stripping of iron ion of metal ion in the buncher of metallic sheave contacting metal band under severe condition, even and with above-mentioned patent documentation in the friction modifier blend mentioned also be difficult to keep the antidetonation performance of quivering.

Patent documentation 7 has been described because monoalkyl type salicylate purification agent suppresses the anti-wear effect of phosphor-included additive, therefore is used in combination the abrasion resistance that specific amide compound can improve the engine valve power train with it.Yet patent documentation 7 does not have open or hint is used for preventing having the variator of Sliding Control rotating vane type clutch coupling, particularly wherein the wearing and tearing of metallic sheave buncher of contacting metal band under severe condition or long-term anti-skidding are controlled the peculiar any solution of trembling of rotating vane type clutch coupling.

(1) patent documentation 1: JP 2003-113391 communique

(2) patent documentation 2: JP 2001-323292 communique

(3) patent documentation 3: JP 2000-355695 communique

(4) patent documentation 4: Unexamined Patent 11-50077 communique

(5) patent documentation 5: Unexamined Patent 10-306292 communique

(6) patent documentation 6: Unexamined Patent 10-25487 communique

(7) patent documentation 7: JP 2004-67812 communique

[summary of the invention]

The object of the present invention is to provide the buncher that is suitable for having Sliding Control rotating vane type clutch coupling, metallic sheave and metal strip, the lubricating oil composition that particularly has this variator of Sliding Control formula starting clutch, said composition have quiver performance and can keep for a long time this antidetonation performance of quivering of the abrasion resistance of excellent metallic sheave and metal strip and initial antidetonation.

The result of the broad research of carrying out as the inventor can realize the discovery of above-mentioned purpose and finish the present invention based on being used in combination specific salicylate purification agent, specific nitrogen compound and phosphorous anti-wear agent.

Namely, according to the present invention, the lubricating oil composition of the variator that is suitable for having Sliding Control rotating vane type clutch coupling is provided, said composition comprises: lubricant base, (A) alkylated salicylamide acid metal salt and/or its (overbasic) subsalt, wherein the component ratio of monoalkyl salicylic acid metal salt is 85-100 % by mole, the component ratio of dialkyl group salicylic acid metal salt is that the component ratio of 0-15 % by mole and 3-alkylated salicylamide acid metal salt is 40-100 % by mole, (B) by the nitrogen compound of following formula (1) expression, and (C) phosphorous anti-wear agent:

R wherein ¹To have the straight chain of 1-30 carbon atom or the alkyl of branching, R ²Be hydrogen or have the straight chain of 1-24 carbon atom or the alkyl of branching, and a and b are 1,2 or 3 integer independently of one another.

Preferably, described lubricating oil composition further comprises friction modifier, particularly amine friction modifier and/or fatty acid friction modifier.

Preferably, described lubricating oil composition further comprises calcium sulphonate and/or sulfonic acid magnesium.

Preferably, described lubricating oil composition further comprises not the ashless dispersant of boracic and/or the ashless dispersant of boracic.

Preferably, described alkylated salicylamide acid metal salt is secondary alkane fundamental mode alkyl salicylate metal-salt.

Preferably, described lubricating oil composition is used for having the buncher of metallic sheave and metal strip.

Preferably, described Sliding Control rotating vane type clutch coupling is Sliding Control formula starting clutch.

The invention still further relates to the method that the buncher with metallic sheave and metal strip and/or Sliding Control rotating vane type clutch coupling is lubricated.

The below will describe the present invention in more detail.

Lubricant base to lubricating oil composition of the present invention is not particularly limited.Therefore, described lubricant base can be mineral base oil or synthetic base oil.

The specific examples of mineral oil comprises that the lubricating oil distillate that can produce by the air distillation Residual oil vacuum distilling that makes the crude oil atmospheric distillation gained stands to be selected from those that following any one or multiple processing make: solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing and hydrofining; The isomerized mineral oil of wax; And by GTL WAX (Gas to Liquid Wax (gas-liquid wax)) isomerization is made those.

The example of synthetic lubricant base oil comprises polybutene and hydride thereof; Poly-alpha-olefin is 1-octene oligopolymer and 1-decene oligopolymer for example, and hydride; Diester is pentanedioic acid two (tridecyl) ester, di-2-ethylhexyl adipate, diisodecyl adipate, hexanodioic acid two (tridecyl) ester and Diisooctyl Sebacate for example; Polyol ester is DOPCP, trimethylolpropane caprylate, TriMethylolPropane(TMP) pelargonate, tetramethylolmethane-2-ethylhexanoate and tetramethylolmethane pelargonate for example; The aromatic series synthetic oil is alkylnaphthalene, alkylbenzene and aromatic ester for example; And the mixture of aforementioned substances.

The example that can be used for the present invention's lubricant base comprises above-mentioned mineral base oil and synthetic base oil and is selected from two or more oily mixtures in these base oils.For example, being used for base oil of the present invention can be one or more mineral base oils or synthetic base oil, perhaps the mixing oil of one or more mineral base oils and one or more synthetic base oils.

Kinematic viscosity to lubricant base of the present invention is not particularly limited.Yet, preferably regulate described lubricant base so that the kinematic viscosity under 100 ℃ is preferably 2-8mm ²/ s, more preferably 2.5-6mm ²/ s, particularly preferably 3-4.5mm ²/ s.Kinematic viscosity under not preferred 100 ℃ is greater than 8mm ²The base oil of/s because the low temperature viscosity characteristic of gained lubricating oil composition can variation, simultaneously also the kinematic viscosity under not preferred 100 ℃ less than 2mm ²The base oil of/s is because the gained lubricating oil composition can inadequate oil film formation makes the vaporization losses of poor lubricity and lubricant base large in lubricated position owing to it.

Sulphur content in the described lubricant base is not particularly limited.Yet sulphur content is preferably 0.1 quality % or less, more preferably 0.05 quality % or less, more preferably 0.01 quality % or less.

Vaporization losses to described lubricant base is not particularly limited.Yet NOACK vaporization losses is preferably 10-50 quality %, more preferably 20-40 quality %, particularly preferably 22-35 quality %.Use is adjusted in the lubricant base in the above-mentioned scope so that can obtain simultaneously cold property and abrasion resistance with NOACK vaporization losses.The vaporization losses that term used herein " NOACK vaporization losses " expression is measured according to CEC L-40-T-87.

Specifically, described lubricant base is preferably the mixture of following two kinds of base oils: the kinematic viscosity under 100 ℃ is 1.5-3.5mm ²/ s, preferred 2-3.2mm ²/ s, more preferably 2.5-3mm ²/ s, sulphur content be 0.05 quality % or less, preferred 0.01 quality % or less, more preferably 0.005 quality % or less and NOACK vaporization losses are that 20-80 quality %, preferred 30-65 quality %, the more preferably base oil of 30-55 quality %, and the kinematic viscosity under 100 ℃ are 3.5-6mm ²/ s, preferred 3.8-4.5mm ²/ s, more preferably 3.9-4.5mm ²/ s, sulphur content be 0.05 quality % or less, preferred 0.01 quality % or less, more preferably 0.005 quality % or less and NOACK vaporization losses are 5-20 quality %, preferred 10-18 quality %, the more preferably base oil of 12-16 quality %, both are with 10: 90-90: 10, preferred 25: 75-75: 25, more preferably 40: 60-60: to such an extent as to kinematic viscosity, sulphur content and NOACK vaporization losses that 40 mass ratio mixes under 100 ℃ of this mixed base oil are in the above-mentioned scope.The result is so that can prepare the composition that has cold property and lubricity when being suitable for transmission oil composition.

Randomly, can to contain 100 ℃ of lower kinematic viscosity a small amount of, for example 5-30 quality % be 6mm to above-mentioned mixed base oil ²/ s or larger, preferred 10-35mm ²/ s, sulphur content is 0.05-1 quality %, preferred 0.1-0.7 quality %, more preferably 0.2-0.6 quality % and NOACK vaporization losses are 10 quality % or less, preferred 5 quality % or less, more preferably 3 quality % or less base oil.

Specific definition is that the component of component (A) is alkylated salicylamide acid metal salt and/or its (overbasic) subsalt in the lubricating oil composition of the present invention, wherein the component ratio of monoalkyl salicylic acid metal salt is 85-100 % by mole, and the component ratio of dialkyl group salicylic acid metal salt is that the component ratio of 0-15 % by mole and 3-alkylated salicylamide acid metal salt is 40-100 % by mole.

Term used herein " monoalkyl salicylic acid metal salt " expression has the alkylated salicylamide acid metal salt of an alkyl, for example 3-alkylated salicylamide acid metal salt, 4-alkylated salicylamide acid metal salt and 5-alkylated salicylamide acid metal salt.The component ratio of described monoalkyl salicylic acid metal salt is 85-100 % by mole based on 100 % by mole of alkylated salicylamide acid metal salts, preferred 88-98 % by mole, and more preferably 90-95 % by mole.Alkylated salicylamide acid metal salt except described monoalkyl salicylic acid metal salt, for example the component ratio of dialkyl group salicylic acid metal salt is 0-15 % by mole, preferred 2-12 % by mole, more preferably 5-10 % by mole.

The component ratio of described 3-alkylated salicylamide acid metal salt is 40-100 % by mole based on 100 % by mole of alkylated salicylamide acid metal salts, preferred 45-80 % by mole, and more preferably 50-60 % by mole.Total proportion of composing of 4-alkylated salicylamide acid metal salt and 5-alkylated salicylamide acid metal salt is consistent with the proportion of composing of alkylated salicylamide acid metal salt except 3-alkylated salicylamide acid metal salt and dialkyl group salicylic acid metal salt, and it is 0-60 % by mole based on 100 % by mole of alkylated salicylamide acid metal salts, preferred 20-50 % by mole, more preferably 30-45 % by mole.Comprise a small amount of dialkyl group salicylic acid metal salt so that can prepare the composition that has simultaneously abrasion resistance and cold property.The component ratio of 40 % by mole or larger 3-alkylsalicylate is so that component ratio that can relative reduce 5-alkylated salicylamide acid metal salt and thereby improve the oil soluble of resulting composition.

The example of alkyl that consists of the alkylated salicylamide acid metal salt of component (A) comprise have 10-40, preferred 10-19 or 20-30, more preferably 14-18 or 20-26, the alkyl of 14-18 carbon atom particularly preferably.Example with alkyl of 10-40 carbon atom comprises for example those alkyl of decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl, docosyl, tricosyl, tetracosyl, pentacosyl, ceryl, heptacosyl, octacosyl, nonacosyl and triacontyl.These alkyl can be straight chain or branching and can be the primary and secondary alkyl.Yet preferred secondary alkyl is because can easily prepare the salicylic acid metal salt that satisfies above-mentioned requirement to component (A).

The example of the metal of described alkylated salicylamide acid metal salt comprises basic metal for example sodium and potassium, and alkaline-earth metal for example calcium and magnesium.This metal is calcium or magnesium preferably, particularly preferably calcium.

Method to component (A) used among preparation the present invention is not particularly limited, thereby it can be by any currently known methods preparation.For example, by with 1 mole or the alkene that more has a 10-40 carbon atom for example polymkeric substance or the multipolymer of ethene, propylene or butylene, preferred linear alpha-olefin for example ethene polymers with 1 moles of phenol alkylation, then with carboxylated this alkylating phenol of carbon dioxide, perhaps by with 1 mole or more above-mentioned alkene, 1 mole of Whitfield's ointment of preferred above-mentioned linear alpha-olefin alkylation, make and contain the monoalkyl Whitfield's ointment as the alkyl salicylate of main ingredient.Then make this alkyl salicylate and metal base for example basic metal or alkaline earth metal oxide or oxyhydroxide reaction, perhaps change into an alkali metal salt for example sodium salt or sylvite, this an alkali metal salt can further be replaced with alkaline-earth metal.Particularly preferably, the reaction ratio of phenol or Whitfield's ointment and alkene is adjusted to preferred 1: 1-1.15 (mol ratio), more preferably 1: 1.05-1.1 (mol ratio), because the component ratio of monoalkyl salicylic acid metal salt and dialkyl group salicylic acid metal salt easily is adjusted to the desired desired proportion of component (A) of stipulating among the present invention.In addition, particularly preferably linear alpha-olefin is used as described alkene, because the component ratio of 3-alkylated salicylamide acid metal salt, 5-alkylated salicylamide acid metal salt etc. easily is adjusted to the desired desired proportion of component (A), and the alkylated salicylamide acid metal salt that preferably has in the present invention a secondary alkyl can be used as main ingredient and obtains.Preferably do not use the alkene of branching as above-mentioned alkene, because only have 5-alkylated salicylamide acid metal salt easily to prepare, but must improve oil soluble has regulation formation of the present invention with preparation component (A) by mixing 3-alkylated salicylamide acid metal salt, so that the method can change.

Be used for component of the present invention (A) and also comprise subsalt, it is by in the presence of water, the basic metal of as mentioned above preparation or alkaline-earth metal salicylate (neutral salt) are heated with excess base metal or alkaline earth salt or basic metal or alkaline earth metal alkali (oxyhydroxide of basic metal or alkaline-earth metal or oxide compound) and prepares; With high alkalinity salt, its by make described neutral salt and alkali for example basic metal or alkaline-earth metal oxyhydroxide carbonic acid gas and/or boric acid or boratory in the presence of react and prepare.

These reactions are carried out in solvent (aliphatic hydrocarbon solvent is hexane for example, and aromatic hydrocarbon solvent is dimethylbenzene for example, and the light lubricating oil base oil) usually.The preferred solvent of its metal content in 1.0-20 quality %, preferred 2.0-16 quality % scope that use.

For component used among the present invention (A), most preferably alkylated salicylamide acid metal salt and/or its (overbasic) subsalt, wherein the component ratio of monoalkyl salicylic acid metal salt and dialkyl group salicylic acid metal salt is respectively 85-95 % by mole and 5-15 % by mole, and 3-alkylated salicylamide acid metal salt and 4-alkylated salicylamide acid metal salt and 5-alkylated salicylamide acid metal salt are respectively 50-60 % by mole and 35-45 % by mole, the excellent performance because the initial antidetonation of the lubricating oil composition of gained is quivered.Here the alkyl of mentioning particularly preferably is secondary alkyl.

The base number of used component (A) is generally 0-500mgKOH/g among the present invention, preferred 20-450mgKOH/g, particularly preferably 100-300mgKOH/g.Can use base number one or more compounds in these scopes.The base number that term used herein " base number " expression is measured by the perchloric acid potentiometric titration according to the 7th part of JIS K2501 " mensuration of petroleum products and lubricant-neutralization value (Petroleum products and lubricants-Determination of neutralization number) ".

Consider abrasion resistance, initial antidetonation quiver performance and retentivity thereof, the content of component in the lubricating oil composition of the present invention (A) is based on the total mass of described composition and be scaled metal, be preferably 0.005-0.5 quality %, more preferably 0.01-0.2 quality %, more preferably 0.02-0.1 quality %, particularly preferably 0.02-0.05 quality %.The component of small amount (A) is better.

Used component (B) is the nitrogen compound by formula (1) expression among the present invention:

In the formula (1), R ¹To have 1-30, preferred 6-24, the more preferably straight chain of 6-12 carbon atom or the alkyl of branching.R ²Be hydrogen or have the straight chain of 1-24 carbon atom or the alkyl of branching that preferred hydrogen or have the straight chain of 1-12 carbon atom or the alkyl of branching more preferably has the straight chain of 6-12 carbon atom or the alkyl of branching.Letter " a " and " b " represents integer 1,2 or 3 separately, preferred 1 or 2, more preferably both represent integer 2.

R ¹The straight chain with 1-30 carbon atom or the specific examples of branched-alkyl comprise methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, sec-butyl, the tertiary butyl, amyl group, hexyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl, docosyl, tricosyl, tetracosyl, pentacosyl, ceryl, heptacosyl, octacosyl, nonacosyl and triacontyl (these alkyl can be straight chain or branching).R ²The straight chain with 1-24 carbon atom or the example of branched-alkyl comprise about R ¹Those alkyl with 1-24 carbon atom that exemplify.

In the nitrogen compound shown in the formula (1), preferred R ¹The alkyl with 6-24 carbon atom, R ²Hydrogen or the alkyl with 1-24 carbon atom, a and b each naturally 1 or 2, R particularly preferably ¹And R ²Each has 6-12 carbon atom, the more preferably alkyl of 6-10 carbon atom, and a and b naturally all is 2.

The example of the nitrogen compound shown in the preferred formula (1) comprises 2 of alkyl with the straight chain that contains 6-24 carbon atom or branching, 5-pair of (alkylthio)-1,3,4-thiadiazoles; Have the straight chain that contains 6-24 carbon atom or branching alkyl 2, two (the alkyl dithio-s)-1,3 of 5-, 4-thiadiazoles; Has the 2-(alkylthio) of the alkyl of the straight chain that contains 6-24 carbon atom or branching-5-sulfydryl-1,3, the 4-thiadiazoles; Have the 2-(alkyl dithio-) of the alkyl of the straight chain that contains 6-24 carbon atom or branching-5-sulfydryl-1,3, the 4-thiadiazoles, and composition thereof.Wherein, particularly preferably 2, two (the alkyl dithio-s)-1,3 of 5-, 4-thiadiazoles.

The content of the nitrogen compound shown in the lubricating oil composition Chinese style of the present invention (1) is preferably 0.005-0.5 quality % based on the total mass of described composition, more preferably 0.01-0.2 quality %, more preferably 0.02-0.15 quality %, particularly preferably 0.03-0.14 quality %.Nitrogen compound content in the above-mentioned scope is performance so that easy long-term maintenance abrasion resistance and antidetonation are quivered.

Component (C) used among the present invention is phosphorous anti-wear agent.

Described phosphorous anti-wear agent is not particularly limited, as long as it is phosphorous in its molecule.The example of this anti-wear agent comprises by following formula (2) or the phosphorus compound of (3) expression or their salt:

In formula (2) and (3), X ¹, X ², X ³, X ⁴, X ⁵And X ⁶Oxygen or sulphur independently of one another, and R ³, R ⁴, R ⁵, R ⁶, R ⁷And R ⁸Hydrogen or the alkyl with 1-30 carbon atom independently of one another.

R ³～R ⁸The specific examples of the alkyl with 1-30 carbon atom comprise aryl and the aralkyl that cycloalkyl, aryl, alkyl that alkyl, cycloalkyl, thiazolinyl, alkyl replace replace.

The example of alkyl comprises it can being those alkyl of straight chain or branching, for example methyl, ethyl, propyl group, butyl, amyl group, hexyl, heptyl, octyl group, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl.

The example of cycloalkyl comprises those groups with 5-7 carbon atom, for example cyclopentyl, cyclohexyl and suberyl.The example of alkyl-cycloalkyl comprises that alkyl wherein can be keyed to those groups with 6-11 carbon atom on the optional position of cycloalkyl, for example methylcyclopentyl, dimethylcyclopentyl, methylethyl cyclopentyl, diethyl cyclopentyl, methylcyclohexyl, Dimethylcyclohexyl, methylethyl cyclohexyl, diethyl cyclohexyl, methyl suberyl, dimethyl suberyl, methylethyl suberyl and diethyl suberyl.

The example of thiazolinyl comprises it can being those thiazolinyls straight chain or branching and that position its pair key can change, for example butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonene base, decene base, undecenyl, dodecenyl succinic, tridecylene base, tetradecene base, 15 carbene bases, cetene base, heptadecene base and vaccenic acid base.

The example of aryl comprises phenyl and naphthyl.The example of alkylaryl comprise alkyl wherein can be straight chain or branching and optional position that be keyed to aryl on those groups with 7-18 carbon atom, for example tolyl, xylyl, ethylphenyl, propyl group phenyl, butyl phenyl, amyl group phenyl, hexyl phenyl, heptyl phenyl, octyl phenyl, nonyl phenyl, decyl phenyl, undecyl phenyl and dodecylphenyl.

The example of aralkyl comprises that wherein alkyl can be those groups with 7-12 carbon atom of straight chain or branching, for example benzyl, styroyl, phenyl propyl, phenyl butyl, phenylpentyl and phenyl hexyl.

R ³～R ⁸The alkyl with 1-30 carbon atom preferably have the alkyl of 1-30 carbon atom or have the aryl of 6-24 carbon atom, more preferably have the alkyl of 4-20 carbon atom, more preferably have the alkyl of 6-18 carbon atom.

The example of the phosphorus compound shown in the formula (2) comprises phosphorous acid; Single thiophosphorous acid; Dithio phosphorous acid; Trithio phosphorous acid; Phosphorous acid monoesters, single thiophosphorous acid monoesters, dithio phosphorous acid monoesters and trithio phosphorous acid monoesters, it has an above-mentioned alkyl with 1-30 carbon atom separately; Phosphorous acid diester, single thiophosphorous acid diester, dithio phosphorous acid diester and trithio phosphorous acid diester, it has two above-mentioned alkyl with 1-30 carbon atom separately; Tris phosphite, single thiophosphorous acid three esters, dithio tris phosphite and trithio tris phosphite, it has three above-mentioned alkyl with 1-30 carbon atom separately; And composition thereof.

The example of the phosphorus compound shown in the formula (3) comprises phosphoric acid; Single thiophosphate; Phosphorodithioic acid; Trithio phosphoric acid; Tetrathio phosphoric acid; Phosphate monoester, single thiophosphate monoesters, phosphorodithioic acid monoesters, trithio phosphate monoester and tetrathio phosphate monoester, it has an above-mentioned alkyl with 1-30 carbon atom separately; Phosphodiester, single thiophosphate diester, phosphorodithioic acid diester, trithio phosphodiester and tetrathio phosphodiester, it has two above-mentioned alkyl with 1-30 carbon atom separately; Phosphotriester, single thiophosphate three esters, phosphorodithioic acid three esters, trithio phosphotriester and tetrathio phosphotriester, it has three above-mentioned alkyl with 1-30 carbon atom separately; And composition thereof.

In the present invention, X in the preferred formula (2) ¹, X ²And X ³In one or more, more preferably two or more and most preferably three all be oxygen.

X in the preferred formula (3) ⁴, X ⁵And X ⁶In one or more, more preferably two or more and most preferably three all be oxygen.

The example of the salt of the phosphorus compound shown in formula (2) and (3) comprises the salt by making phosphorus compound and following substance reaction and all or part of remaining acidic hydrogen neutralization being prepared: nitrogen compound is ammonia for example, in its molecule, only have the 1-18 of containing, the amine compound of the alkyl of preferred 1-8 carbon atom or the alkyl of hydroxyl, or the oxyalkylene of described amine compound adds or thing, or metal base metal oxide for example, metal hydroxides, metal carbonate and metal chloride.

The specific examples of described nitrogen compound comprises ammonia; Alkyl or alkenyl amine, wherein this alkyl or alkenyl can be straight chain or branching, for example MMA, mono aminoethane, single propylamine, dibutyl amine, monoamylamine, single hexylamine, single heptyl amice, single octylame, single lauryl amine, single stearylamine, single oleyl amine, dimethylamine, methylethyl amine, diethylamine, methyl-propyl amine, ethyl propyl amine, dipropyl amine, methyl butyl amine, N-Ethylbutylamine, propyl group butylamine, dibutylamine, diamylamine, dihexylamine, two heptyl amices and Di-Octyl amine; Alkanolamine, wherein this chain triacontanol base can be straight chain or branching, for example single carbinolamine, monoethanolamine, single Propanolamine, only son's hydramine, single amylalcohol amine, single hexanol amine, single enanthol amine, single octanol amine, single nonyl alcohol amine, dimethanolamine, methanol/ethanol amine, diethanolamine, methyl alcohol Propanolamine, ethanol propanol amine, dipropanolamine, methyl alcohol butanolamine, ethanol and butanol amine, propyl alcohol butanolamine, two butanolamines, diamyl hydramine, two hexanol amine, two enanthol amine and two octanol amine; Wherein oxyalkylene for example ethylene oxide add to affixture on these alkylamines or the alkanolamine; And composition thereof.

The specific examples of the metal in the above-mentioned metal base comprises basic metal for example lithium, sodium, potassium and caesium, and alkaline-earth metal is calcium, magnesium and barium for example, and heavy metal for example zinc, copper, iron, lead, nickel, silver, manganese and molybdenum.In these metals, the preferred bases earth metals is calcium and magnesium for example, and zinc.

Any one or more components of blend (C) in lubricating oil composition of the present invention.

Component (C) preferably is selected from following a kind of compound or the mixture of two or more compounds: phosphorous acid or phosphoric acid, have the alkyl that contains 4-20 carbon atom or contain the phosphoric acid ester of (alkyl) aryl of 6-12 carbon atom or phosphorous acid ester and by making the prepared amine salt of these esters and the alkylamine with the alkyl that contains 1-18 carbon atom, be more preferably a kind of compound of the phosphorous acid ester that is selected from phosphorous acid and has the alkyl that contains 4-20 carbon atom or the mixture of two or more compounds, particularly preferably have the phosphorous acid diester of the alkyl that contains 4-8 carbon atom.

The content of component in lubricating oil composition of the present invention (C) is based on the total mass of described composition 0.01-5 quality % normally, but preferred 0.001-0.1 quality % with regard to phosphorus, more preferably 0.005-0.08 quality %, more preferably 0.01-0.06 quality %, particularly preferably 0.02-0.05 quality %.The component (C) that contains with above-mentioned scope is so that can prepare excellent on abrasion resistance and initial antidetonation are quivered performance and can easily keep for a long time the quiver composition of performance of this antidetonation.

In lubricating oil composition of the present invention, based on the total mass of described composition, to being not particularly limited by the content of the component (A) of metallic element concentration (M) definition and mass ratio ((M)/(P)) by the content of the component (C) of phosphoric concentration (P) definition.Yet this mass ratio ((M)/(P)) is preferably 0.1-250, more preferably 0.5-50, more preferably 0.8-5, particularly preferably 1-3.

In lubricating oil composition of the present invention, based on the total mass of described composition, the content of component (B) and mass ratio ((B)/(P)) by the content of the component (C) of phosphoric concentration (P) definition are not particularly limited.Yet this mass ratio ((B)/(P)) is preferably 0.1-250, more preferably 0.5-50, more preferably 1-10, particularly preferably 1.5-5.

Component (A) in the above-mentioned scope and (B) separately with by the mass ratio of the content of the component (C) of phosphoric concentration (P) definition so that can prepare on abrasion resistance and initial antidetonation are quivered performance excellence and can easily keep for a long time the quiver composition of performance of this antidetonation.

Component (A), (B) and (C) combination be used for lubricating oil composition of the present invention so that can prepare excellent on abrasion resistance and initial antidetonation are quivered performance and can easily keep for a long time the quiver composition of performance of this antidetonation.Yet, in order further to improve these performances or to give other performances for lubricating oil composition necessity, can in lubricating oil composition of the present invention, add conventional lubricating oil additive.The example of described additive comprises metal detergent, ashless dispersant, friction modifier, antioxidant, extreme-pressure additive, anti-wear agent, viscosity index improver, rust-preventive agent, corrosion inhibitor, pour point depressant, swell rubber agent, defoamer and the dyestuff except component (A).These additives can be used alone or in combination.

The example of the metal detergent except component (A) comprises salicylate purification agent, sulfonate detergent and the phenates purification agent except component (A).

The example of the salicylate purification agent except component (A) comprises alkylated salicylamide acid metal salt and/or its (overbasic) subsalt, and the component ratio that wherein has the dialkyl group salicylic acid metal salt of two alkyl that contain 10-40 carbon atom is 15 % by mole or larger; Have the alkyl that contains 1-9 carbon atom and dialkyl group salicylic acid metal salt and/or its (overbasic) subsalt of containing the alkyl of 10-40 carbon atom; And alkylated salicylamide acid metal salt and/or its (overbasic) subsalt, wherein the component ratio of 3-alkylated salicylamide acid metal salt is less than 40 % by mole.The example of metal comprises alkali and alkaline earth metal ions.

The example of sulfonate detergent comprises basic metal or the alkaline earth salt of alkyl aromatic sulfonic acid, and particularly preferably magnesium and/or calcium salt, this alkyl aromatic sulfonic acid be by being 100-1 with molecular weight, 500, the Alkylaromatics sulfonation of preferred 200-700 and preparing.The specific examples of alkyl aromatic sulfonic acid comprises mahogany acid and synthetic sulfonic acid.

Mahogany acid can be those or the mahogany acid of by-product can be WHITE OIL PRODUCTION time for preparing by Alkylaromatics sulfonation contained in the lubricating oil distillate with mineral oil.Synthetic sulfonic acid can be those that prepare by the alkylbenzene sulfonation that will have straight chain or branched-alkyl, this alkylbenzene is produced as by product as the equipment of the alkylbenzene of detergent feedstocks by preparation or by the polyolefine alkylation is prepared to benzene, or prepare by sulfonation dinonyl naphthalene those.The sulphonating agent that is used for these Alkylaromatics of sulfonation is not particularly limited.This sulphonating agent can be oleum or sulfuric acid.

The specific examples of phenates purification agent comprises by making alkaline earth salt, particularly magnesium salts and/or the calcium salt of the alkylphenol with at least one straight chain that contains 4-30, preferred 6-18 carbon atom or branched-alkyl and the alkylphenol sulfide that reaction of Salmon-Saxl prepares or the Mannich reaction products by making the alkylphenol that described alkylphenol and formaldehyde reaction prepare.

The base number of the metal detergent except component (A) is generally 0-500mgKOH/g, preferred 20-450mgKOH/g.

When the metal detergent that uses except component (A), particularly preferably be used in combination and be selected from base number and be 0-500mgKOH/g, the preferably calcium sulfonate detergents of 100-400mgKOH/g and the one or more of compounds in the sulfonic acid magnesium purification agent.Be used in combination these sulfonate detergents so that can prepare abrasion resistance, antidetonation quiver performance and the retentivity thereof with excellence and height balance.

Content to the metal detergent except component (A) in the lubricating oil composition of the present invention is not particularly limited.Yet this content is generally 0.01-5 quality % based on the total mass of composition, preferred 0.05-1 quality %, particularly preferably 0.1-0.5 quality %.

The ashless dispersant that can be used for the present invention can be any compound as the ashless dispersant of lubricating oil.The example of ashless dispersant comprises that nitrogenous compound for example has succinimide, benzylamine and the polyamines that at least one contains the alkyl or alkenyl of individual, preferred 60-350 the carbon atom of 40-400 in each their molecule of leisure, and derivative or modified product.This alkyl or alkenyl that contains 40-400 carbon atom can be straight chain or branching and preferably derived from the alkene alkyl or alkenyl of the branching of the copolymerized oligomer of the oligopolymer of propylene, 1-butylene or iso-butylene or ethene and propylene for example.Have the alkyl or alkenyl that is less than 40 carbon atoms and can be created in the less compound of solubleness in the lubricant base, and the alkyl or alkenyl that has more than 400 carbon atoms can make the low-temperature fluidity of resulting composition poor.

The derivative of the nitrogenous compound of enumerating as the example of ashless dispersant or the specific examples of modified product comprise by making for example lipid acid or have the poly carboxylic acid of 2-30 carbon atom for example oxalic acid, phthalic acid, trimellitic acid and pyromellitic acid are reacted so that the sour modified compound that all or part of remaining amino and/or imino-neutralization or amidation prepare of arbitrarily above-mentioned nitrogenous compound and the monocarboxylic acid with 2-30 carbon atom; By the boron modified compound that arbitrarily above-mentioned nitrogenous compound and acid reaction so that all or part of remaining amino and/or imino-neutralization or amidation are prepared; By the phosphorus modified compound that arbitrarily above-mentioned nitrogenous compound and phosphoric acid or phosphorous acid reaction are made; By the sulphur modified compound that arbitrarily above-mentioned nitrogenous compound and sulphur compound reaction is prepared; And the modified product for preparing by the combination that is selected from two or more modifications of acid, boron, p and s modification of above-mentioned nitrogen compound.

Lubricating oil composition of the present invention can contain any one compound or two or more compounds of the above ashless dispersant that exemplifies of being selected from of any content.Yet its content is generally 0.1-10 quality % based on the total mass of composition.

Lubricating oil composition of the present invention preferably contains not the ashless dispersant of boracic and/or the ashless dispersant of boracic, and it is preferably succinimide class ashless dispersant.The content of ashless dispersant that can boron and/or the ashless dispersant of boracic is preferably 0.1-10 quality %, more preferably 3-6 quality % based on the total mass of lubricating oil composition.When being used in combination these ashless dispersants, the content of ashless dispersant that can boron is preferably 10 quality % or still less, more preferably 1-6 quality %, 2-4 quality % particularly preferably, simultaneously the content of the ashless dispersant of boracic is preferably 6 quality % or still less, more preferably 0.01-4 quality %, particularly preferably 0.5-2 quality %.The content of the ashless dispersant of boracic and the ashless dispersant of this boracic and not the mass ratio of the total amount of the ashless dispersant of boracic be preferably 0.1-1, more preferably 0.15-0.5, particularly preferably 0.2-0.3.The ashless dispersant that comprises boracic can improve abrasion resistance and so that easily preparation have the quiver composition of performance and retentivity and speed change characteristic of excellent antidetonation in well balanced mode.

Can be used for friction modifier of the present invention can be any compound that is typically used as the friction modifier of lubricating oil.Specific examples comprises amine, acid imide, amides and fatty acid friction modifier, has the alkyl or alkenyl that at least one contains 6-30 carbon atom in each their molecule of leisure, particularly contains straight chained alkyl or the thiazolinyl of 6-30 carbon atom.

Those materials of the oxyalkylene affixture of the example of amine friction modifier the comprises linear aliphatic monoamine straight chain that for example has separately 6-30 carbon atom or branching, preferred, alkanolamine and aliphatic polyamine and these aliphatic amines.

The example of acid imide friction modifier comprises that succinimide class friction modifier for example has one or two and contains 6-30, straight chain of preferred 8-18 carbon atom or list and/or the double amber imide of alkyl branching, preferred branched, and by making described succinimide and being selected from boric acid, phosphoric acid, having the carboxylic acid of 1-20 carbon atom and one or more compounds in the sulfocompound react the succinimide modified compound for preparing.

The example of amides friction modifier comprises that fatty acid acyl amine friction modifier for example has the acid amides of the straight chain fatty acid straight chain of 7-31 carbon atom or branching, preferred and ammonia, aliphatic monoamine or aliphatic polyamine.

The example of fatty acid friction modifier comprises straight chain fatty acid straight chain or branching, preferred, the fatty acid ester of described lipid acid and aliphatic monohydric alcohol or aliphatic polyol, fatty acid metal salt be the zinc salt of the alkaline earth salt of described lipid acid (magnesium salts and calcium salt) and described lipid acid for example.

In the present invention, above-mentioned acid imide friction modifier, particularly succinimide class friction modifier not only can improve humid clutch frictional coefficient and thereby improve power transmission efficiency, and effectively significantly improve the antidetonation persistence of quivering.

In above-mentioned friction modifier, particularly preferably use aliphatic amine friction modifier and fatty acid friction modifier, especially fatty acid metal salt, because they can significantly improve the initial antidetonation performance of quivering.Particularly preferably, lubricating oil composition of the present invention contains described aliphatic amine friction modifier and/or fatty acid friction modifier.When aliphatic amine friction modifier and fatty acid friction modifier are used in combination, the mass ratio between them is not particularly limited.Yet this mass ratio is preferably 1: 5-5: 1, more preferably 1: 3-3: 1, particularly preferably 1: 2-2: 1, because can obtain more excellent speed change characteristic.

Lubricating oil composition of the present invention can contain any one compound or two or more compounds in the above friction modifier that exemplifies of being selected from of any amount.Yet its content is generally 0.01-5.0 quality % based on the total mass of composition, preferred 0.03-3.0 quality %.

The antioxidant that can be used for the present invention can be any antioxidant that is generally used in the lubricating oil, for example phenols or aminated compounds.

The specific examples of antioxidant comprises for example 2,6 di tert butyl 4 methyl phenol of alkylphenol; Bis-phenol is methylene radical-4 for example, 4-bis-phenol (2,6 di tert butyl 4 methyl phenol); Naphthylamines is phenyl-a-naphthylamine for example; Dialkyl diphenylamine; (3,5-di-tert-butyl-hydroxy phenyl) lipid acid (propionic acid) and monobasic or polyvalent alcohol be methyl alcohol, Stearyl alcohol, 1 for example, the ester of 6-hexylene glycol, neopentyl glycol, Thiodiglycol, triglycol and tetramethylolmethane; Thiodiphenylamine; The organo-metallic antioxidant is molybdenum, copper and zinc for example; And composition thereof.

Can be in lubricating oil composition of the present invention with in these compounds of any amount blend one or more.Yet the content of antioxidant is generally 0.01-5.0 quality % based on the total amount of composition.

In the present invention, preferably use phenol antioxidant and/or amine antioxidants and particularly preferably be used in combination phenol antioxidant and amine antioxidants, because can easily keep for a long time the antidetonation performance of quivering.When phenol antioxidant and amine antioxidants were used in combination, the mass ratio between them was preferably 1: 5-10: 1, more preferably 1: 1-8: 1, more preferably 2: 1-6: 1.

The extreme-pressure additive that can be used for the present invention can be any compound as the extreme-pressure additive of lubricating oil.The example of extreme-pressure additive comprises sulphur compounds for example dithiocarbamate, disulphide, olefine sulfide and sulfuration grease.Can be in lubricating oil composition of the present invention with in these compounds of any amount blend one or more.Yet its content is generally 0.01-5.0 quality % based on the total mass of composition.

The specific examples of viscosity index improver comprises that non-dispersive type viscosity index improver for example is selected from polymkeric substance or multipolymer or its hydride of one or more monomers of various methacrylic esters; For example further contain the multipolymer of the various methacrylic esters of nitrogen compound with the decentralized viscosity index improver.The specific examples of other viscosity index improvers comprises that wherein alpha-olefin can be non-dispersive type or decentralized ethene-alpha-olefin copolymer or its hydride of propylene, 1-butylene or 1-amylene; Polyisobutene or its hydride; Vinylbenzene-hydrogenated diene copolymer; The phenylethylene-maleic anhydride ester copolymer; With polyoxyethylene alkylphenyl ethene.

Must consider that the shear stability of these viscosity index improvers selects its molecular weight.Particularly, the number-average molecular weight of non-dispersive type or decentralized polymethacrylate is 5,000-150,000, and preferred 5,000-35,000.The number-average molecular weight of polyisobutene or its hydride is 800-5,000, and preferred 1,000-4,000.The number-average molecular weight of ethene-alpha-olefin copolymer or its hydride is 800-150,000, and preferred 3,000-12,000.

In these viscosity index improvers, use ethene-alpha-olefin copolymer or its hydride so that can prepare the excellent especially lubricating oil composition of shear stability.

Can be in lubricating oil composition of the present invention with any amount blend be selected from these viscosity index improvers-kind or multiple compounds.Yet the content of viscosity index improver is generally 0.1-20.0 quality % based on the total amount of composition.

The example of rust-preventive agent comprises alkenyl succinic acid, alkenyl succinic acid ester, polyol ester, sulfonated petro-leum and dinonylnaphthalene sulfonic acid salt.

The example of corrosion inhibitor comprises benzotriazole category, tolyl-triazole class and glyoxaline compound.

The example of pour point depressant comprises the polymethacrylate that is fit to lubricant base to be used.

The example of swell rubber agent comprises aromatics or ester rubber swelling agent.

The example of defoamer comprises siloxanes for example dimethyl siloxane and fluorosilicone.

Although the content of these additives is chosen wantonly, but the total amount based on lubricating oil composition of the present invention, the content of corrosion inhibitor is 0.005-0.2 quality %, and the content of defoamer is 0.0005-0.01 quality %, and the content of other additives is 0.005-10 quality %.

The kinematic viscosity of lubricating oil composition of the present invention under 100 ℃ is generally 2-25mm ²/ s, preferred 3-8mm ²/ s, more preferably 4-7mm ²/ s, more preferably 5-6mm ²/ s.

Lubricating oil composition of the present invention is to have quiver performance and can keep for a long time this antidetonation performance of quivering of the abrasion resistance of excellent metallic sheave and metal strip and initial antidetonation, thereby is fit to have the lubricating oil composition of the buncher of Sliding Control rotating vane type clutch coupling and metal strip, particularly wet starting clutch.In addition, described lubricating oil composition is suitable as the lubricating oil that requirement improves and improves the characteristic of humid clutch at abrasion resistance, and it is specially adapted to automatic or manual variator and the differential gearing of automobile, building machinery and agricultural machine.In addition, this lubricating oil composition can be used as industrial gear oil; Such as two petrol engine, diesel motor or the gas engine lubricating oil of taking turns with automobile, generator and boats and ships such as four-wheel cars; Turbine oil; And compressor oil.

[industrial applicability]

Monoalkyl type salicylate purification agent is excellent but suppress the anti-wear effect of phosphor-included additive and can not keep the antidetonation of the Sliding Control rotating vane type clutch coupling performance of quivering on initial antidetonation is quivered performance.Yet, according to component of the present invention (A) and component (B) and combination (C) so that wearing and tearing and the anti-skidding that can suppress in the buncher that wherein metallic sheave and metal strip be in contact with one another under severe condition are controlled peculiar the trembling of rotating vane type clutch coupling.

[implementing best mode of the present invention]

Below, will the present invention be described in more detail by the following example and comparative example, these should not be interpreted into and limit the scope of the invention.

(embodiment 1-6 and comparative example 1-3)

Performance, (2) antidetonation retentivity and (3) abrasion resistance of performance that quiver thereby the initial antidetonation of the lubricating oil composition evaluation as described below (1) of the embodiment 1-6 that lists in the preparation table 1 and comparative example 1-3 is quivered.The result lists in the table 1 equally.The ratio of base oil is based on the base oil total mass, and the amount of each additive is based on the total mass of composition.

(1) the initial antidetonation performance of quivering

Under the surface pressure of 1.5MPa, other conditions are carried out the quiver evaluation of performance of initial antidetonation according to JASO M349-98, thereby measure d μ/dV in the 2rpm-200rpm scope with LVFA.This d μ/dV value is a kind of index, and it is positive number and larger, the excellent initial antidetonation of the expression performance of quivering then, and it is that the words of negative then represent the antidetonation performance extreme difference that quivers.

(2) the antidetonation retentivity of performance that quivers

Find in metallic sheave and metal strip are in contact with one another under severe condition therein the buncher, the stripping of the wearing and tearing of metal and iron ion and significantly like this when using component of the present invention (A) often occurs, thereby resulting composition is difficult to keep the antidetonation performance of quivering.According to JIS-K2514 make each lubricating oil composition 150 ℃ lower deteriorated 72 hours, then the 300ppm Organic Iron that contains iron ion is dissolved in each composition by mass, in order to prepare the lubricating oil through life-time service to be evaluated.Estimate each oil with mode identical in (1) by measuring d μ/dV.Even the iron of positive number and larger d μ/dV value representation metallic sheave and metal strip since long-time use the and stripping to lubricating oil, said composition also can keep the antidetonation of the humid clutch performance of quivering.

(3) abrasion resistance

Measure because the four ball wear vestige diameters that use each composition to produce according to ASTM-D4172.This vestige diameter is less, and the abrasion resistance of composition is more excellent.

The result who is listed by table 1 obviously finds out, each composition exhibiting of embodiment 1-6 goes out positive number and larger d μ/dV value, and this value is the quiver reference of performance of initial antidetonation, and outstanding on its retentivity.Confirming that in addition these compositions form diameter 0.50mm or less vestige, also is excellent on abrasion resistance.On the other hand, do not contain any composition (comparative example 1-3) of component (A) to (C) obviously poor on initial antidetonation is quivered performance or abrasion resistance.

Table 1

1) hydrocracking base oil (100 ℃ of kinematic viscosity: 2.6mm ²/ s, viscosity index: 105, NOACK vaporization losses: 52 quality %, S:0.1 quality % or still less)

2) hydrocracking base oil (100 ℃ of kinematic viscosity: 4.0mm ²/ s, viscosity index: 125, NOACK vaporization losses: 16 quality %, S:0.1 quality % or still less)

3) has the calcium carbonate high alkalinity salt (base number: 170mgKOH/g, Ca:6 quality %) of the Calcium Alkylsalicylate of the secondary alkyl of C14-C18, the structure of Calcium Alkylsalicylate: 3-alkyl: 53mol%, 4-alkyl: 4mol%, 5-alkyl: 35mol%, 3,5-dialkyl group: 8mol%

4) 2, two (the alkyl dithio-s)-1,3 of 5-, 4-thiadiazoles, alkyl: C6-C8 alkyl

5) dibutyl phosphite (phosphorus content: 16.4 quality %)

6) phosphorous acid two-2-ethylhexyl (phosphorus content: 10.6 quality %)

7) polybutylene-based succinimide

8) boric acid modified polybutylene-based succinimide

9) calcium sulphonate (total basicnumber: 300mgKOH/g)

10) sulfonic acid magnesium (total basicnumber: 100mgKOH/g)

11) amine friction modifier

12) fatty acid friction modifier

13) dialkyl group diphenylamine

14) bisphenols antioxidant

15) polydimethylsiloxane

Claims

1. lubricating oil composition that is applicable to have the variator of Sliding Control rotating vane type clutch coupling, it comprises:

Lubricant base;

(A) be selected from least a alkylated salicylamide acid metal salt in alkylated salicylamide acid metal salt, its subsalt and its high alkalinity salt, wherein the component ratio of monoalkyl salicylic acid metal salt is 85-100 % by mole, and the component ratio of dialkyl group salicylic acid metal salt is that the component ratio of 0-15 % by mole and 3-alkylated salicylamide acid metal salt is 40-100 % by mole;

(B) nitrogen compound that is represented by following formula (1); With

(C) phosphorous anti-wear agent:

R wherein ¹To have the straight chain of 1-30 carbon atom or the alkyl of branching, R ²Be hydrogen or have the straight chain of 1-24 carbon atom or the alkyl of branching, and a and b be integer 1,2 or 3 independently of one another,

Wherein said composition also comprises sulfonate detergent.

2. lubricating oil composition claimed in claim 1, it further comprises friction modifier.