CN101250461A - Lubricating composition - Google Patents

Abstract

The invention discloses a lubricating oil composite, comprising a main quantity of basic oil; and a few quantity of effect-adding additive composites; the composite comprises (i) aryl-substituted triazole compound with the condition being that the triazole compound is not alkyl bi-3-amino-1, 2, 4-triazole; and (ii) nitrogen compound including chemical formula, wherein R<1> and R<2> are respectively independently selected from at least one aryl, hydrogen, halogen, hydroxyl, alkyl, substituted alkyl, amino, amido, phosphor and sulfur comprising about 6 to about 30 carbon atoms.

Description

Lubricating composition

CROSS-REFERENCE TO RELATED APPLICATION

The application is the Application No. US11/609 that submitted on December 11st, 2006,084 part continuation application, and require the rights and interests of above-mentioned application, quote in full above-mentioned application at this.

Technical field

The present invention relates to a kind of additive and lubricant compositions, and method of use thereof.More specifically, the present invention relates to a kind of compositions of additives that comprises synergistic combination, described synergistic combination comprises (i) triazole compounds and (ii) nitrogenous compound.

Background technology

As everyone knows, diesel engine application is applicable to diesel motor in many fields and lubricant compositions.Having a kind of in the diesel motor of numerous types is medium speed diesel engines, and it is applicable to the situation that needs thousands of horsepower (for example, 2000 to 10,000 horsepowers).These situations comprise deep-well, marine ships, the landlocked workboat that uses and the pusher engine of coastal waterway, and are used for multiple situation and comprise train, sea drilling platform, and the fixing or uninterruptable power generation machine of industrial facility and building.Usually, these engines are with about 100 to about 1, the operation of the speed of 200rpm.This demand environment has caused oily oxidation, thereby can cause corrosion of metal in the engine.

Different these engines that are usually with other diesel motor of medium speed diesel engines have the parts of silver, for example silver-colored bearing.Therefore; the lubricating composition that is used for medium speed diesel engines; except the formation of antioxidative stabilizer and antisolvent precipitation and carbonaceous deposit is provided; also must be furnished with special silver protecting agent; so that in-engine silver-colored bearing neither can be subjected to the infringement of additive in the oil, also can not be subjected to prolonging the infringement of the resolvent that produces during the power operation.This class reagent, so-called silver-colored lubricant possesses anti-extreme pressure, wear-resistant and corrosion resistant performance.

Common engine lubrication composition may comprise extreme pressure agent and antiwear agents.The extreme pressure agent and the antiwear agents of frequent use are sulfocompounds, for example zinc dialkyl dithiophosphate (ZDDP).But well-known, some sulfocompounds can not be used for the engine of argentiferous parts, because sulfocompound can damage silver-colored parts as we all know.This known trend for example has been documented in the U.S. Pat 4,428,850.Therefore, need remove to find a kind of compositions of additives, it can provide oxidation protection and can not contain the compound that contains active sulphur with potentially dangerous substantially in some cases.

Summary of the invention

According to the present invention, a kind of compositions of additives is provided, it comprises the triazole compounds that (i) aryl moiety replaces, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; The nitrogenous compound that (ii) has following chemical formula:

R wherein ¹And R ²Be selected from independently of one another and at least aly comprise about 6 aryl moieties, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, phosphorus (or even phosphorus) (phosphoro) and sulphur (sulfono) to about 30 carbon atoms.

On the one hand, the invention provides a kind of lubricant compositions, it comprises the base oil of main amount; And a spot of synergy (working in coordination with) compositions of additives, described Synergistic additives composition comprises the triazole compounds that (i) aryl moiety replaces, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; The nitrogenous compound that (ii) has following chemical formula:

R wherein ¹And R ²Be selected from least a about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, phosphorus (or even phosphorus) and the sulphur of comprising independently of one another to about 30 carbon atoms.

On the other hand, the present invention also provides a kind of lubricant compositions, and it comprises a kind of compositions of additives, described compositions of additives comprises the triazole compounds that (i) aryl moiety replaces, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; The nitrogenous compound that (ii) has following chemical formula:

R wherein ¹And R ²Be selected from least a about 6 aryl (part), hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, phosphorus (or even phosphorus) and the sulphur of comprising independently of one another to about 30 carbon atoms.

In addition, the invention provides a kind of method of improving the lubricant compositions oxidation protection, described method comprises: provide a kind of lubricant compositions to machine, it comprises the base oil of main amount; And the minor amounts of additives composition, described composition comprises the triazole compounds that (i) aryl moiety replaces, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; The nitrogenous compound that (ii) has following chemical formula:

R wherein ¹And R ²Be selected from least a about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, phosphorus (or even phosphorus) and the sulphur of comprising independently of one another to about 30 carbon atoms.

In addition, the invention provides a kind of method of operating machines, comprise and add a kind of lubricating composition, described composition comprises the base oil of main amount; And the minor amounts of additives composition, described compositions of additives comprises the triazole compounds that (i) aryl replaces, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; The nitrogenous compound that (ii) has chemical formula:

R wherein ¹And R ²Be selected from least a about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, phosphorus (or even phosphorus) and the sulphur of comprising independently of one another to about 30 carbon atoms.

In addition, the invention provides a kind of method that at least one moving parts of machine is lubricated, described method comprises makes at least a moving parts contact with lubricant compositions, and described lubricant compositions comprises the base oil of main amount; And a spot of Synergistic additives composition, it comprises the triazole compounds that (i) aryl replaces, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; The nitrogenous compound that (ii) has following chemical formula:

R wherein ¹And R ²Be selected from least a about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, phosphorus (or even phosphorus) and the sulphur of comprising independently of one another to about 30 carbon atoms.

Other purpose of the present invention and beneficial effect will be described in the detailed description below, and/or obtain by practice of the present invention.Purpose of the present invention and beneficial effect can be understood and obtain by the key element that particularly points out in the dependent claims and combination.

Being appreciated that aforesaid summary and following detailed description are for the purpose of illustration only and illustrate, is not limitation of the present invention.

Embodiment

The present invention relates to following embodiment:

1, a kind of Synergistic additives composition comprises:

(i) triazole compounds that replaces of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino 1,2, the 4-triazole; With

The nitrogenous compound that (ii) has chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl moiety, hydrogen, halogen, hydroxyl, alkyl, the alkyl of replacement, amino, amido, p and ses independently of one another to about 30 carbon atoms.

2, as enforcement scheme 1 described Synergistic additives composition, wherein R ¹And R ²Be respectively to comprise about 6 aryl to about 30 carbon atoms.

3, as enforcement scheme 1 described Synergistic additives composition, wherein aryl is selected from phenyl, benzyl, naphthyl and alkaryl.

4, as enforcement scheme 3 described Synergistic additives compositions, wherein alkaryl is selected from alkyl phenyl and alkyl naphthyl, wherein aryl comprise about 4 to about 30 carbon atoms.

5, as enforcement scheme 4 described Synergistic additives compositions, wherein the aryl moiety of alkaryl comprise about 4 to about 12 carbon atoms.

6, as enforcement scheme 1 described Synergistic additives composition, wherein polycyclic replaces triazole compounds or unsubstituted aryl is replaced by comprising.

7, as enforcement scheme 1 described Synergistic additives composition, wherein triazole compounds is replaced by comprising monocyclic replacement or unsubstituted aryl.

8, as enforcement scheme 1 described Synergistic additives composition, wherein triazole compounds is represented by chemical formula (I):

R wherein ³Be selected from hydrogen and at least a about 1 alkyl, the wherein R of comprising to about 24 carbon atoms ⁴Be selected from hydrogen, at least a about 1 alkyl and the substituted hydrocarbon radical that comprise to about 24 carbon atoms.

9, as enforcement scheme 1 described Synergistic additives composition, wherein triazole compounds is a benzotriazole.

10, as enforcement scheme 1 described Synergistic additives composition, wherein triazole compounds accounts for about 0.01wt% of compositions of additives total amount to about 3wt%.

11, as enforcement scheme 1 described Synergistic additives composition, wherein nitrogenous compound accounts for about 0.07wt% of compositions of additives total amount to about 33wt%.

12, as implement scheme 1 described Synergistic additives composition, also comprise at least a additive, it is selected from dispersion agent, grey washing composition is arranged, ashless detergent, the high alkalinity washing composition, pour point depressor, viscosity modifier, grey friction modifiers is arranged, ashless friction modifiers, the nitrogen friction modifiers is arranged, no nitrogen friction modifiers, the esterification friction modifiers, extreme pressure agent, rust-preventive agent, replenish antioxidant, inhibiter, defoamer, titanium compound, titanium complex, organic solvable molybdenum compound, organic solvable molybdenum match, boron-containing compound, contain boron complexes, Tungstenic compound and contain tungsten complex.

13, as enforcement scheme 1 described Synergistic additives composition, also comprise at least a molybdenum compound.

14, as enforcement scheme 1 described Synergistic additives composition, also comprise at least a titanium compound.

15, a kind of lubricant compositions comprises

The base oil of main amount; And

A spot of Synergistic additives composition, it comprises:

The (ii) triazole compounds that replaces of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; With

(ii) a kind of nitrogenous compound with chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl moiety, hydrogen, halogen, hydroxyl, alkyl, the alkyl of replacement, amino, amido, p and ses independently of one another to about 30 carbon atoms.

16, as enforcement scheme 15 described lubricant compositions, wherein lubricant compositions does not have the compound of boracic or phosphorus substantially.

17, as enforcement scheme 15 described lubricant compositions, wherein lubricant compositions does not have zinc dialkyl dithiophosphate substantially.

18, as enforcement scheme 15 described lubricant compositions, wherein triazole compounds accounts for about 0.05wt% of total composition to about 0.5wt%.

19, as enforcement scheme 15 described lubricant compositions, wherein nitrogenous compound accounts for about 0.01wt% of total composition to about 10wt%.

20, as enforcement scheme 15 described lubricant compositions, wherein nitrogenous compound accounts for about 0.3wt% of total composition to about 3wt%.

21, as enforcement scheme 15 described lubricant compositions, wherein triazole compounds accounts for about 0.05wt% of total composition, and nitrogenous compound accounts for the 0.3wt% of total composition.

22, as implement scheme 15 described lubricant compositions, also comprise at least a additive, it is selected from dispersion agent, grey washing composition is arranged, ashless detergent, the high alkalinity washing composition, pour point depressor, viscosity modifier, grey friction modifiers is arranged, ashless friction modifiers, the nitrogen friction modifiers is arranged, no nitrogen friction modifiers, the esterification friction modifiers, extreme pressure agent, rust-preventive agent, replenish antioxidant, inhibiter, defoamer, titanium compound, titanium complex, organic solvable molybdenum compound, organic solvable molybdenum match, boron-containing compound, contain boron complexes, Tungstenic compound and contain tungsten complex.

23, as enforcement scheme 15 described lubricant compositions, wherein lubricating oil composition is selected from medium speed diesel engines oil, bus engine oil, and heavy duty diesel engine oil.

24, as enforcement scheme 15 described lubricant compositions, also comprise at least a molybdenum compound.

25, as enforcement scheme 15 described lubricant compositions, also comprise at least a titanium compound.

26, a kind of lubricant compositions comprises

The base oil of main amount; And

The minor amounts of additives composition, it comprises:

(i) triazole compounds that replaces of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; With

The nitrogenous compound that (ii) has chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, the alkyl of replacement, amino, amido, p and ses independently of one another to about 30 carbon atoms.

27, a kind of method of improving the oxidation protection of lubricant compositions, described method comprises:

Provide a kind of lubricant compositions to machine, said composition comprises the base oil of main amount; And the minor amounts of additives composition, it comprises:

(i) triazole compounds that replaces of a kind of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole;

(ii) a kind of nitrogenous compound with following chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, p and ses independently of one another to about 30 carbon atoms.

28, as method as described in the enforcement scheme 27, wherein machine is selected from spark ignition and compression-ignition engine.

29, as method as described in the enforcement scheme 28, wherein engine is selected from diesel engine, ship engine, rotary engine, turbine engine, locomotive engine, puopulsion engine, aviation piston engine, fixed generator, uninterruptable power generation machine and comprises the engine of silver-colored parts.

30, a kind of method of operating machines comprises:

Add a kind of lubricant compositions to machine, described composition comprises the base oil of main amount; And the minor amounts of additives composition, comprising:

(i) triazole compounds that replaces of a kind of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole;

(ii) a kind of nitrogenous compound with following chemical formula (II):

R wherein ¹And R ²Be selected from least a about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, the p and s of comprising independently of one another to about 30 carbon atoms.

31, as method as described in the enforcement scheme 30, wherein machine is selected from spark ignition and compression-ignition engine.

32, as method as described in the enforcement scheme 30, wherein engine is selected from diesel engine, ship engine, rotary engine, turbine engine, locomotive engine, puopulsion engine, aviation piston engine, fixed generator, uninterruptable power generation machine and comprises the engine of silver-colored parts.

33, a kind of method that at least one moving parts in the machine are lubricated, described method comprises:

At least one moving parts is contacted with lubricant compositions, and described lubricant compositions comprises the base oil of main amount; And a spot of Synergistic additives composition, it comprises:

(i) triazole compounds that replaces of aryl moiety, and restricted condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole;

The nitrogenous compound that (ii) has chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, p and ses independently of one another to about 30 carbon atoms.

34, as method as described in the enforcement scheme 33, wherein machine is selected from spark ignition and compression-ignition engine.

35, as method as described in the enforcement scheme 34, wherein at least one moving parts is selected from gear, piston, bearing, bar, spring, camshaft, arbor and rotor.

The present invention relates generally to a kind of lubricant compositions, it comprises the base oil and the minor amounts of additives composition of main amount, and described compositions of additives comprises the triazole compounds that (i) aryl replaces, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; The nitrogenous compound that (ii) has following chemical formula:

R wherein ¹And R ²Be selected from least a about 6 aryl moieties, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, phosphorus and the sulphur of comprising independently of one another to about 30 carbon atoms.

Term as herein described " main amount " is meant that with respect to the composition gross weight weight percent is more than or equal to 50 weight %, and for example, about 80 weight % are to about 98 weight %.In addition, term as herein described " on a small quantity " is meant that with respect to the composition gross weight weight percent is less than 50 weight %.

" fragrance " as herein described or " aryl ", unless illustrate especially, the typical case who refers to this type of replaces or does not replace non-aliphatic alkyl or heterocyclic moiety, for example, polynary undersaturated, normally fragrance, cyclic hydrocarbon or heterocyclic, have monocycle or condense together or the substituting group of covalently bound many rings (up to three rings).Usually aryl comprises phenyl, naphthyl, biphenylene (biphenylenyl), phenanthryl, non-that thiazolinyl (phenalenyl) or the like.These parts can be by the optional replacement of one or more alkyl.Also comprise the aryl that replaces by other aryl moiety, for example xenyl.Heterocyclic aryl or aromatic portion mean undersaturated cyclic group part, comprise carbon atom and other one or more heteroatomss in its ring, normally oxygen, nitrogen, sulphur and/or phosphorus atom, for example pyridyl, thienyl, furyl, thiazolyl, pyranyl, pyrryl, pyrazolyl, imidazolyl, pyrazinyl, thiazolyl etc.These parts can be by the optional replacement of one or more substituting groups, and described substituting group for example is hydroxyl, the optional low alkyl group that replaces, optional lower alkoxy, amino, amido, ester group and the carbonyl (for example, aldehydes or ketones base) that replaces.

" alkaryl " as herein described unless illustrate especially, means by the aryl of above-mentioned typical case's replacement or unsubstituted non-aliphatic alkyl or heterocyclic substituted.Typical aryl comprises phenyl, naphthyl, phenmethyl or the like.These groups can be by the optional replacement of one or more substituting groups, and for example hydroxyl is chosen the alkyl that replaces wantonly, optional alkoxyl group, amino, amido, ester group and the carbonyl (for example, aldehydes or ketones base) that replaces.

" hydrocarbon " as herein described, " alkyl " or " based on hydrocarbon " mean the group with main alkyl characteristic that those are described herein.These groups comprise pure alkyl in essence, that is to say, they only contain carbon and hydrogen.They also comprise contains substituting group or the atom that does not change the main hydrocarbon characteristic of described group.This substituting group can comprise halogeno-group, alkoxyl group, nitro etc.These groups also can contain heteroatoms.Suitable heteroatoms is known in those skilled in the art, comprises, for example, sulphur, nitrogen, oxygen and phosphorus atom.Therefore, when the main alkyl characteristic that keeps herein, except comprising carbon atom, can also comprise non-carbon atom in the chain of these groups or the ring.

Term as herein described " synergy (working in coordination with) " with and word change the interaction mean between the various components, the effect when they are used in combination is better than the summation of independent use.

Any triazole that the triazole compounds that is suitable in the composition of the present invention can be replaced by aryl, alkyl is two-3-amino-1,2, except the 4-triazole.In some embodiments, triazole compounds is the 1,2,3-triazoles compound.In other embodiment, triazole compounds is 1,2, the 4-triazole compounds.

For example, triazole compounds can involved monocycle or many rings, and for example covalently bound many rings replace or unsubstituted aryl replaces.The nonrestrictive example that comprises the substituted aryl of covalently bound ring comprises biphenyl, 1,1 '-dinaphthalene, p, p '-ditolyl base, biphenylene or the like.In another example, aryl comprises a plurality of condensed rings.The nonrestrictive example that comprises the aryl of a plurality of fused rings comprises naphthyl, anthryl, pyrenyl (pyrenyl), phenanthryl, non-that thiazolinyl or the like.In another example, aryl moiety can comprise covalently bound monocycle to triazole compounds.The non-limitative example that comprises a covalently bound monocyclic aryl on triazole comprises phenyl etc.In another example, aryl moiety can comprise a monocycle that is fused on the triazole compounds.The non-limitative example of this compounds comprises benzotriazole.The example that is applicable to the triazole compounds that commerce of the present invention can get is a benzotriazole, and it is a kind of shallow white (off-white) solid, and the fusing point that has is 95-99 ℃, and flash-point is 170 ℃, and 20 ℃ the time in the water solubleness be 25g/L.Described triazole compounds can with other additive chemical combination/reaction/mix to increase its solubleness in composition.

In one embodiment, triazole compounds can be expressed by following molecular formula (I):

R wherein ³Be selected from hydrogen and at least a about 1 alkyl, the wherein R of comprising to about 24 carbon atoms ⁴Be selected from hydrogen, at least a about 1 alkyl and the substituted hydrocarbon radical that comprise to about 24 carbon atoms.In another embodiment, the R of the triazole compounds in the formula (I) ³And R ⁴Comprise about 1 independently of one another to about 16 carbon atoms.

Triazole compounds can be present in lubricant and the compositions of additives with any significant quantity, and this significant quantity is easy to be determined by those of ordinary skills.In addition, triazole compounds can exist with any synergy significant quantity.In one embodiment, lubricating composition of the present invention can comprise that by the lubricating composition total amount about 0.01wt% is to about 10wt%, and for example about 0.05wt% is to the triazole compounds of about 0.5wt%.In another embodiment, compositions of additives of the present invention comprises the triazole compounds to about 3wt% by the about 0.01wt% of profit additive compound total amount.

Composition of the present invention can also comprise nitrogenous compound.Type for the nitrogenous compound that is applied to composition of the present invention is not particularly limited.Usually, the nitrogenous compound of Shi Yonging can be explained by following molecular formula (II):

R wherein ¹And R ²Be selected from least a about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, the p and s of comprising independently of one another to about 30 carbon atoms.For example, the R1 of nitrogenous compound and R2 all comprise and contain about 6 aryl moieties to about 30 carbon atoms.The example of nonrestrictive aryl comprises alkane phenyl (alkphenyl), benzyl, naphthyl and the alkaryl of phenyl.In another example, R ¹And R ²Comprise alkaryl independently of one another, for example alkane phenyl or alkane naphthyl, wherein alkyl comprises about 4 to about 30, and for example from about 4 to about 12 carbon atoms.In the another one example, R ¹And R ²Comprise independently of one another and replacing or unsubstituted aryl.The example of nonrestrictive aryl substituent comprises and comprises about 1 alkyl to 20 carbon atoms, hydroxyl, carboxyl and nitro.In another example, R ¹And R ²Be benzyl, the phenyl or naphthyl that alkyl replaces independently of one another.

The unrestriced example of other of nitrogenous compound comprises: aniline; Pentanoic; Triphenylamine; Various alkylation aniline, pentanoic and triphenylamine; N, N '-two (4-aminophenyl)-alkylamine; The 3-hydroxy diphenylamine; N-phenyl-1, the 2-phenylenediamine; N-phenyl-1, the 4-phenylenediamine; The dibutyl pentanoic; Dioctyl diphenylamine; Dinonyldiphenylamine; Phenyl-a-naphthylamine; Phenyl beta naphthylamine; The diheptyl pentanoic; And to the vinylbenzene pentanoic.The preparation method of the unrestriced example of the nitrogenous compound that other is suitable and they is disclosed in U.S. Pat 6,218, and in 576, this literary composition quotes in full to do reference at this.

The nitrogenous compound that this paper is suitable for can have and is different from the structure that has a nitrogen-atoms in molecule shown in the formula (II).Therefore, nitrogenous compound can have different structures, and condition is that at least one nitrogen-atoms has connection at least one aryl thereon, for example, in the situation of various diamines, has secondary nitrogen-atoms and is connected with aryl on a nitrogen-atoms therein.

Nitrogenous compound as herein described when using separately in composition of the present invention, has oxidation resistant performance, and have synergy (working in coordination with) function under the situation that triazole compounds of the present invention exists.For example, if having triazole compounds and nitrogenous compound in the lubricant compositions of the present invention, the oxidation protection characteristic that triazole compounds and/or nitrogenous compound provide separately can obviously be promoted, and therefore is able to synergy.Compare with independent use triazole compounds or nitrogenous compound, synergism makes compositions of additives only need lower processing ratio just can reach identical desired oxidation protection level.In addition, nitrogenous compound used herein can be dissolved in the final lubricant compositions.

The quantity of the nitrogenous compound that uses in the described composition changes according to specific requirement and application.On the one hand, nitrogenous compound exists with the synergy significant quantity.In one embodiment, lubricating composition of the present invention includes by the about 0.01wt% of lubricating composition total amount to about 10wt%, and for example about 0.3wt% nitrogenous compound of about 3wt% extremely.In another embodiment, the compositions of additives of invention includes the nitrogenous compound to about 33wt% by the about 0.07wt% of compositions of additives total amount.

Composition disclosed herein can be chosen wantonly and contain additive, for example dispersion agent, contain grey washing composition, ashless detergent, high alkalinity washing composition, pour point depressor, viscosity modifier, contain grey friction modifiers, ashless friction modifiers, nitrogenous friction modifiers, no nitrogen friction modifiers, esterification friction modifiers, extreme pressure agent, rust-preventive agent, replenish antioxidant, inhibiter, defoamer, titanium compound, titanium complex, organic solvable molybdenum compound, organic solvable molybdenum match, boron-containing compound, contain boron complexes, Tungstenic compound, contain tungsten complex and composition thereof.On the one hand, according to demands of applications, composition can comprise at least a titanium-containing compound of different amounts.On the other hand, according to the requirement of using, composition can comprise at least a molybdate compound of different amounts.

In one embodiment, the application's lubricant compositions does not have substantially, does not for example contain the compound of active sulphur.Term used herein " active sulphur " is meant at about 100 ℃ and can reacts with machine part in fact to about 400 ℃ normal engine temperature range of operation, generates the sulfocompound of metallic sulfide.Active sulphur is different with inactive sulfur, and inactive sulfur does not react when temperature is lower than 400 ℃ substantially, but can fully react when temperature is higher than 400 ℃, generates metallic sulfide, thereby protects the engine parts that are under the extreme pressure condition or have final condition.Because these borderline regions and extreme pressure zone, those of ordinary skills can understand easily all can be apparently higher than 400 ℃ in each position temperature of engine, engine typically operate in lesser temps, for example be lower than under 400 ℃ and carry out.For example, when specific engine parts, for example during the bearing carry load, can produce this borderline region and extreme pressure zone.Under these comparatively high tempss, can use the inactive sulfur compound to react, then not react substantially when engine moves under lower temperature usually with the protection engine parts.Therefore; those of ordinary skills understand the compound that contains active sulphur; zinc dialkyl dithiophosphate (ZDDP) for example; can be to some machine; for example medium speed diesel engines or the machine that comprises silver-colored parts produce the harmful effect that can measure, and still can protect engine parts in use contains these machines of inactive sulfur compound.At least for this reason, want to use this machine, will from prescription, remove active sulfur compound.Those skilled in the art can know how to determine the influence of sulfocompound to machine part, for example, determine by silver-colored meltage in the mensuration lubricant and/or the deposition on the silver-colored parts.Being used for the object of the invention term " does not have substantially " to be defined as and has the concentration that can not survey harmful effect in fact.

In some embodiments, the application's lubricant compositions does not have basically, does not for example contain P contained compound.In other embodiments, the application's composition can not contain boron-containing compound substantially.Can in the application's prescription, save and remove phosphorous and/or boron-containing compound, so that can utilize these yuan cue mark lubricant contamination thing usually.For example, not phosphorous usually or boron during the preparation of railroad engines lubricating oil.When using, can regularly detect phosphorus and/or boron in these lubricating oil, represent when having them to exist that lubricating oil is polluted by for example ZDDP at the engine run duration, perhaps under the boracic situation, is polluted by borated coolant.In this way, indicate the lubricant contamination thing with phosphorus and/or the boron thing that serves as a mark.Term " does not have " meaning to be substantially, only contains the phosphorus and/or the boron of trace in the composition, makes the concentration of these elements to the effect not influence in fact as the phosphorus of marker and boron.

The base oil that is suitable in the described composite formula can be selected from synthetic oil or mineral oil or their mixture arbitrarily.Mineral oil comprises animal oil and vegetables oil (for example Viscotrol C, lard), and other mineral lubricating oils, for example solvent treatment of liquid petroleum lubricating oil and paraffin, naphthenic hydrocarbon or blended paraffin-naphthenic hydrocarbon or acid-treated mineral lubricating oils.Oil derived from coal or shale is suitable for too.In addition, GTL for Gas To Liquids process deutero-oil is suitable for too.

Base oil occupies main amount, and wherein " main amount " is interpreted as and surpasses or equal 50% weight, and for example about 80% of lubricant compositions weight to about 98% weight.

Base oil can have any viscosity that is applicable to used purpose.For example, the dynamic viscosity of suitable engine oil is about 2 to about 150cSt and in another example in the time of 100 ℃, for about 5 to about 15cSt.Therefore, for example, can estimate viscosity that base oil has for about SAE15 to about SAE250 and in another example, be about SAE20W about SAE50 extremely.Suitable motor oil also can comprise multiple lubricating oil, for example 15W-40,20W-50,75W-140,80W-90,85W-140,85W-90 or the like.

The limiting examples of synthetic oil comprises hydrocarbon ils, as polymerization and copolyolefine (as multipolymer of polybutene, polypropylene, propylene and iso-butylene etc.); Polyalphaolefin is as poly-(1-hexene), poly-(1-octene), poly-(1-decene) etc. and miscellany thereof; Alkylbenzene (as dodecylbenzene, tetradecyl benzene, dinonyl benzene, two (2-ethylhexyl) benzene etc.); Polyphenyl (polyphenyls) (as biphenyl, terphenyl, alkylation polyphenyl etc.); Alkylation phenyl ether and alkylation diphenyl sulfide, and derivative, analogue, homologue etc.

Terminal hydroxy group has been formed another kind of known operable synthetic oil through the alkylene oxide polymer of modifications such as esterification, etherificate and multipolymer and derivative thereof.This oil comes exemplary illustration by the oil of following substances polymerization preparation, as the alkyl of oxyethane or propylene oxide, these polyalkylene oxide polymers and aryl ethers (is methyl-poly-Isopropanediol ether of about 1000 as molecular-weight average, molecular weight is the phenyl ether of the polyoxyethylene glycol of about 500-1000, molecular weight is for the diethyl ether of the polypropylene glycol of about 1000-1500 etc.) or its monocarboxylic acid and multi-carboxylate, as acetic ester, mixed C _3～8Fatty acid ester, or the C of TEG ₁₃The oxygen acid diester.

Another kind of operable synthetic oil comprises the ester of dicarboxylic acid (as phthalic acid, succsinic acid, alkyl succinic acid, alkenyl succinic acid, toxilic acid, nonane diacid, suberic acid, sebacic acid, fumaric acid, hexanodioic acid, linoleic acid dimer, propanedioic acid, alkyl propanedioic acid, thiazolinyl propanedioic acid etc.) and various alcohol (as butanols, hexanol, lauryl alcohol, 2-Ethylhexyl Alcohol, ethylene glycol, Diethylene Glycol monoether, propylene glycol etc.).The specific examples of these esters comprises the own diester of 2-ethyl of Polycizer W 260, sebacic acid two (2-ethylhexyl) ester, the just own ester of fumaric acid two, dioctyl sebacate, diisooctyl azelate, two different decayl esters of azelaic acid, dioctyl phthalate (DOP), didecyl phthalate, sebacic acid two larane esters, linoleic acid dimer, by complex ester of 1 mole of sebacic acid and 2 moles of Tetraglycol 99s and 2 moles of thylhexoic acid prepared in reaction etc.

Ester as synthetic oil comprises that also those are by C _5-12Monocarboxylic acid and polyvalent alcohol and polyol ethers are as the ester of preparations such as neopentyl glycol, TriMethylolPropane(TMP), tetramethylolmethane, Dipentaerythritol, tripentaerythritol.

Therefore, the base oil that can be used to prepare composition described herein can be selected from any one of the specified I～V class base oil of any American Petroleum Institute (API) (API) base oil interchangeability guide.Base oil is classified as follows:

The I class contains and is less than 90% saturated component and/or greater than 0.03% sulphur, viscosity index more than or equal to 80 less than 120; The II class contains more than or equal to 90% saturated component and is less than or equal to 0.03% sulphur, viscosity index more than or equal to 80 less than 120; The III class contains more than or equal to 90% saturated component and is less than or equal to 0.03% sulphur, and viscosity index is more than or equal to 120; The IV class is polyalphaolefin (PAO); The V class comprises all other base oils outside I, II, III or the IV class.

Be used for determining that the testing method of above-mentioned classification is to measure saturated branch with ASTM D2007, ASTMD2270 measures viscosity index; Measure sulphur with one among the ASTM D2622,4294,4927 and 3210.

IV class base oil, promptly polyalphaolefin (PAO) comprises the hydrogenation oligopolymer of alhpa olefin, most important low dimerization method is a free radical technology, Ziegler catalysis and positively charged ion, Friedel-Crafts catalysis.

Under 100 ℃, the range of viscosities of polyalphaolefin generally is 2 to 100cSt, as being 4 to 8cSt under 100 ℃.As, it can be to contain about 2 to the side chain of about 30 carbon atoms or the oligopolymer of straight, limiting examples comprises polypropylene, polyisobutene, poly-1-butylene, poly-1-hexene, poly-1-octene and poly-1-decene.Comprise homopolymer, multipolymer and miscellany thereof.

Consider the equilibrium of base oil above-mentioned, " I class base oil " comprises also and one or more other class base oil blended I class base oil that condition is that the miscellany that obtains has the feature of above-mentioned specified I class base oil.

The base oil of example comprises the miscellany of I class base oil and II class base oil and I class bright stock.

The base oil that this paper uses can adopt various prepared, includes but not limited to distillation, solvent treatment, hydrotreatment, oligomeric, esterification and re-refines.

Base oil can be the oil product derived from the synthetic hydrocarbon of fischer-tropsch.The synthetic hydrocarbon of fischer-tropsch can adopt Fischer-Tropsch catalyst by the synthesis gas preparation that contains H2 and CO.This hydrocarbon generally needs further to handle, so that as base oil.As, this class hydrocarbon can adopt U.S. Patent No. 6103099 or 6180575 disclosed technologies to carry out hydroisomerization; Adopt U.S. Patent No. 4943672 or 6096940 disclosed technologies to carry out hydrocracking and hydroisomerization; Adopt U.S. Patent No. 5882505 disclosed technologies to dewax; Or adopt U.S. Patent No. 6013171,6080301 or 6165949 disclosed technologies to carry out hydroisomerization and dewaxing.

The above-mentioned disclosed unrefined oil of this paper, treated oil and rerefined oils, or mineral oil or synthetic oil (and miscellany of two or more these oil products) may be used to base oil.Unrefined oil is meant from mineral or synthesis material and directly obtains, and do not pass through the oil product of further purification processes.As, directly operate the shale oil that obtains by destructive distillation, directly oil or the direct ester oil that is obtained by esterification technique that is obtained by primary distillation belongs to unrefined oil without further handling with regard to using.Except further handling to improve one or more performances through one or more purification step, treated oil and unrefined oil are similar.Many these type of purification techniquess are well-known to those skilled in the art, as solvent extraction, second distillation, acid or alkali extracting, filtration, permeation filtration etc.Obtain rerefined oils by the technology similar to obtaining treated oil, these process application are in treated oil just in use.This type of rerefined oils is also referred to as reuse oil or reprocessed oils, processes in addition by the technology of directly removing useless additive, impurity and oil product degraded product usually.

According to a plurality of embodiments, a kind of method that is used to improve lubricant compositions oxidation protection performance is disclosed.Term described in the literary composition " improves oxidation protection " and means with not using composition disclosed herein to be compared, can enhancing composition to the oxidation protection of machine, for example reduce infrared carbonyl absorption amount and/or reduce the kinematic viscosity of the composition that uses in the machine.The method of improving oxidation comprises to machine provides lubricating oil composition, and it comprises the base oil of main amount; And a spot of Synergistic additives composition, it comprises the triazole compounds that (i) aryl moiety replaces, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; The nitrogenous compound that (ii) has following chemical formula (II):

R wherein ¹And R ²Be selected from least a about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, the p and s of comprising independently of one another to about 30 carbon atoms.

According to a plurality of embodiments, the method for at least one moving parts in a kind of lubrication machine is also disclosed, described method comprises makes at least one moving parts contact with lubricant compositions, and described lubricant compositions comprises the base oil of main amount; And a spot of described Synergistic additives composition.

In other embodiments, also disclose a kind of method of operating machines, comprised and add a kind of lubricant compositions, described composition comprises the base oil of main amount; And a spot of described Synergistic additives composition.

Machine in the described method can be selected from spark ignition and compression-ignition engine, comprise diesel engine, ship engine, rotary engine, turbine engine, locomotive engine, puopulsion engine, aviation piston engine, fixed generator, uninterruptable power generation machine and comprise the machine of silver-colored parts.In addition, at least one moving parts can be selected from gear, piston, bearing, pull bar, spring, camshaft, arbor, rotor or the like.

Lubricant compositions can be arbitrarily can the effectively lubricating machine composition.On the one hand, composition is selected from medium speed diesel engines oil, bus engine oil and heavy-duty engine oil.In one embodiment, composition is a medium speed diesel engines oil.

Embodiment

The following examples are used to explain the present invention and its beneficial characteristics.Unless illustrate especially, among these embodiment and other place of the application, all umbers and per-cent are all by weight.The purpose of these embodiment is to be used for illustrating purpose of the present invention, is not to be used for limiting protection scope of the present invention.

The antioxidant property of test lubricant composition, described lubricant compositions do not contain the compound of active sulphur, boron and phosphorus substantially.The following examples illustrated when with triazole compounds and nitrogenous compound for example arylamines allocate the synergism that lubricating oil composition for example exists during machine oil into.Embodiment has also illustrated and has compared separately or the uniqueness of synergism when being used in combination anti-oxidizing compounds.

Embodiment 1

In this embodiment, the lubricating base oils composition is as follows:

Table 1- Base composition

Component	Wt.％
		Functional polymer	2-5
Dialkyl group thiadiazoles (thiadiazole)	0.01-1
		Olefine sulfide (resistance to wearing)	0.01-1
The low alkalinity washing composition	1-4
		The high alkalinity washing composition	1-5
Dispersion agent	1-10
		Base oil 40/60 mixture	Equal amount

As shown in table 2 below, mixture 2 to 8 comprises at least a interpolation component except that top base composition.Triazole compounds is the benzotriazole of being produced by Affon Chemical Corporation, wherein the benzotriazole of 25wt% is dissolved in uncle's alkyl amine (from Rohm and Haas, Philadelphia, the Primene JM-T that PA obtains) and in the solvent neutral mineral oil, thereby can be dissolved in the base composition of table 1.Novel arylamine compound is a dialkyl diphenylamine.In order to get rid of the possibility that uncle's alkyl amine works to the composition oxidative stability, uncle's alkyl amine is equally by triazole compounds (5), and novel arylamine compound (6) and both mixtures (8) are tested.

Table 2- Lubricant compositions

Use ethyl oxidation test (Ethyl Oxidation Test) to measure the oxidative stability of these eight kinds of lubricant compositions.When 300 ℉, oxygen by bubbling by containing the testing tube of a kind of lubricating oil composition in suspension iron, copper and lead and the table 2.Atmospheric condenser is collected the volatile matter of maximum, and per 24 hours carry out primary sample and analysis to lubricant compositions.Use methods known in the art to measure the increase of kinematic viscosity and the infrared carbonyl absorption of oily oxidation products, thereby evaluate of the control of employed lubricating oil composition for oxidation.

Carbonyl absorption many more, the particular lubricants composition is just more little to the oxidation protection of machine.It is big more that viscosity increases, and the particular lubricants composition is just poor more to the stability of oxidation.The result is shown in following table 3 and 4.

Table 3- Viscosity increases

Table 4- Infrared carbonyl absorption

As shown in Tables 3 and 4, the basic mixture that comprises triazole compounds (2), uncle alkyl amine (3) or nitrogenous compound (4) has some early stage, a spot of oxidation protections.Nitrogenous compound (4) the best in three kinds of lubricant compositions, its 48 tests in carbonyl absorption hour have reduced 33%, have reduced 11% at 72 hours, have reduced 7% at 96 hours.The viscosity increase of triazole compounds (2) or uncle's alkyl amine (3) is suitable with basic mixture.Nitrogenous compound (4) is lower 48 and 72 hours viscosity increase, and has a bigger viscosity to increase at 96 hours.Aspect carbonyl absorption and viscosity increase, lubricant compositions (6) is suitable with the nitrogenous compound (4) that uses separately.Lubricant compositions (5) is inoperative substantially to oxidation, and carbonyl absorption and basic mixture be equal to, and the increase of viscosity big than basic mixture.Therefore, shown in carbonyl absorption or viscosity increase, be used alone or as a mixture triazole compounds (2) and primary alkyl amine (3) does not play the oxidation protection effect substantially for the basic mixture that does not contain active sulphur.Under the situation that is with or without uncle's alkyl amine, use nitrogenous compound (4) that some oxidation protections can be provided separately.

Shown in carbonyl absorption and viscosity increase, nitrogenous compound mixes use and has demonstrated obvious synergistic effect with triazole compounds (7).96 hours negative carbonyl absorption value has shown the oxidation that does not have generation to measure in the table 4.A small amount of minimizing of 96 hours viscosity has shown small amounts in the table 3.By carbonyl absorption, show nitrogenous compound, triazole compounds and uncle's alkyl amine be used in combination for (8) three kinds to have produced a spot of oxidation products, and reducing slightly slightly of big viscosity shows that uncle's alkyl amine has a spot of tendency to oxidize that helps.Therefore, the use that mixes of nitrogenous compound and triazole compounds (7) is given the credit in synergism.Observable to oxidation on, uncle alkyl amine do not play any effect.

Embodiment 2

As shown in table 5 below, reuse the base composition in the table 1, but changed the consumption of triazole compounds and nitrogenous compound.

Table 5- Lubricating oil composition

The same oxidative stability of using ethyl oxidation test (Ethyl Oxidation Test) to measure these compositions.As mentioned above, the method for the increase by measuring kinematic viscosity and the infrared carbonyl absorption of oxidation products is evaluated the control of employed lubricating oil composition for oxidation.The results are shown in following table 6 and 7.

Table 6- Viscosity increases

The per-cent that kinematic viscosity in the time of 100 ℃ increases

Lubricating oil composition	48 hours	72 hours	96 hours
				9	5	30.3	71.4
10	8.3	35.7	84.7
				11	3.7	27.4	63.4
12	-1.4	-1.8	-3.9
				13	-1.8	-8.4	-0.8
14	-1.8	-8.7	6.6

7-is infrared for table Carbonyl absorption

Table 2 is to test triazole compounds with the concentration of 0.375wt%, and this concentration is normally quite high for benzotriazole.As shown in table 5, separately or with the triazole compounds that nitrogenous compound uses, whether can influence result discussed above with the test of the benzotriazole of 0.10wt% and 0.05wt% with the triazole compounds of measuring low amount.Shown in table 6 and 7, use separately for example triazole compounds of 0.10wt% (10) and 0.05wt% (11) of lower concentration in the basic mixture, still obtain the viscosity increase suitable with basic mixture.The concentration of carbonyl absorption and all three kinds of triazole compounds is suitable, and only than basic mixture low about 20%.

With two groups of low concentrations, the triazole compounds of 0.10wt% (13) and 0.05wt% (14) mixed use with nitrogenous compound, shows 48 and 72 tests hour to surpass 90% lower carbonyl absorption, surpassed 50% lower carbonyl absorption at 96 hours.In the time of 72 hours, the viscosity of the triazole compounds of two groups of low concentrations reduces above 8%, shows some oxidations have taken place.Even in 96 tests hour, minimum triazole compounds concentration, i.e. 0.05wt% (14), the viscosity increase that shows also has only 6.6%, compares basic mixture and has reduced 88%, and the basic mixture (4) of comparing independent use nitrogenous compound has reduced 84%.Therefore, even the triazole compounds of 0.05wt% and nitrogenous compound use jointly, just can have the significant oxidation protection of measuring by carbonyl absorption and viscosity change.

Should be noted that the singulative that uses in specification sheets and the claim " ", " a kind of " and " being somebody's turn to do " comprise that plural number refers to, unless can be undoubted and unique odd number that is restricted to.Therefore, for example, comprise two or more antioxidants with reference to " a kind of antioxidant ".Term used herein " comprises " and word change mean unrestriced, thereby the narration Listed Items, but the meaning of those other similar items that can substitute or add to Listed Items not being got rid of.

According to this specification sheets and claim, unless stated otherwise, all numeral expression quantity of using in this specification sheets and the claim, per-cent or ratio and other numeral expression numerical value can be understood as and uses term " about " to revise.Therefore, unless opposite explanation is arranged, the digital parameters of using in following specification sheets and the claims all is an approximation, the desired result that it will be obtained according to the present invention and changing to some extent.Each digital parameters all should be understood according to the significant in value of record and the correlation technique of application at least, is not used for limiting the application range that is equivalent to the claim scope at all.

Even described embodiment, applicant or others skilled in the art can carry out present unforeseen selection, modification, variation, improvement and actual suitable replacement.Therefore, can improve the accessory claim of record to comprise all these selections, to revise, change, improve and actual suitable replacement.

Claims (10)

1, a kind of Synergistic additives composition comprises:

(i) triazole compounds that replaces of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; With

The nitrogenous compound that (ii) has chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl moiety, hydrogen, halogen, hydroxyl, alkyl, the alkyl of replacement, amino, amido, p and ses independently of one another to about 30 carbon atoms.

2, Synergistic additives composition as claimed in claim 1, wherein R ¹And R ²Be respectively to comprise about 6 aryl to about 30 carbon atoms.

3, Synergistic additives composition as claimed in claim 1, wherein polycyclic replaces triazole compounds or unsubstituted aryl is replaced by comprising.

4, Synergistic additives composition as claimed in claim 1, wherein triazole compounds is represented by chemical formula (I):

R wherein ³Be selected from hydrogen and at least a about 1 alkyl, the wherein R of comprising to about 24 carbon atoms ⁴Be selected from hydrogen, at least a about 1 alkyl and the substituted hydrocarbon radical that comprise to about 24 carbon atoms.

5, Synergistic additives composition as claimed in claim 1, wherein triazole compounds accounts for about 0.01wt% of compositions of additives total amount to about 3wt%.

6, a kind of lubricant compositions comprises

The base oil of main amount; And

A spot of Synergistic additives composition, it comprises:

(i) triazole compounds that replaces of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; With

(ii) a kind of nitrogenous compound with chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl moiety, hydrogen, halogen, hydroxyl, alkyl, the alkyl of replacement, amino, amido, p and ses independently of one another to about 30 carbon atoms.

7, a kind of lubricant compositions comprises

The base oil of main amount; And

The minor amounts of additives composition, it comprises:

(i) triazole compounds that replaces of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole; With

The nitrogenous compound that (ii) has chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, the alkyl of replacement, amino, amido, p and ses independently of one another to about 30 carbon atoms.

8, a kind of method of improving the oxidation protection of lubricant compositions, described method comprises:

Provide a kind of lubricant compositions to machine, said composition comprises the base oil of main amount; And the minor amounts of additives composition, it comprises:

(i) triazole compounds that replaces of a kind of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole;

(ii) a kind of nitrogenous compound with following chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, p and ses independently of one another to about 30 carbon atoms.

9, a kind of method of operating machines comprises:

Add a kind of lubricant compositions to machine, described composition comprises the base oil of main amount; And the minor amounts of additives composition, comprising:

(i) triazole compounds that replaces of a kind of aryl moiety, and condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole;

(ii) a kind of nitrogenous compound with following chemical formula (II):

R wherein ¹And R ²Be selected from least a about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, the p and s of comprising independently of one another to about 30 carbon atoms.

10, a kind of method that at least one moving parts in the machine are lubricated, described method comprises:

At least one moving parts is contacted with lubricant compositions, and described lubricant compositions comprises the base oil of main amount; And a spot of Synergistic additives composition, it comprises:

(i) triazole compounds that replaces of aryl moiety, and restricted condition for this reason triazole compounds be not alkyl two-3-amino-1,2, the 4-triazole;

The nitrogenous compound that (ii) has chemical formula (II):

R wherein ¹And R ²Be selected from least a comprise about 6 aryl, hydrogen, halogen, hydroxyl, alkyl, substituted hydrocarbon radical, amino, amido, p and ses independently of one another to about 30 carbon atoms.