JP2002020779A - Lubricant composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lubricant composition having neither toxicity nor environmental problem as a chlorine-based or a sulfur-based lubricating oil additive has, having excellent lubricating characteristics. SOLUTION: This lubricant composition comprises a lubricating base, a phosphorous ester compound represented by general formula (1) [R1O-(R2-O)m]n- P-[-OH]3-n (1) (R1 and R2 are each a hydrocarbon group; m is a number of >=1; n is a number of 1-3) or a neutralized substance between the phosphorous ester compound and a basic compound as a component (A) and an organomolybdenum compound as a component (B). Oxymolybdenum dithiocarbamate sulfide, oxymolybdenum dithiophosphate sulfide or a reaction product between an amine and a pentavalent or hexavalent molybdenum compound is preferable as the organomolybdenum compound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a lubricating composition, particularly to a metalworking oil.

[0002]

2. Description of the Related Art Conventionally, in the field of metal working oils, extreme pressure agents have been used for the purpose of improving lubricity and workability. Typical extreme pressure agents are chlorine-based, sulfur-based, phosphorus-based and the like. However, although chlorine-based extreme pressure agents are excellent in workability, they may cause deterioration of the working environment such as skin rash and rust on metal, and are used as a cause of dioxin generation. The amount being reduced is decreasing. In particular, metal working oils often come into contact with workers' bodies, so chlorine-based extreme pressure agents tend to be avoided. Sulfur-based compounds are also excellent in lubricity and extreme pressure properties, but many have unique odors, and thus have many problems in metalworking applications that may come into contact with the human body.

As a substitute for the chlorine-based extreme pressure agent, a phosphorus-based additive has been considered. Examples of the phosphorus-based additive include a phosphoric acid ester (salt) type, a phosphite ester (salt) type, a thiophosphoric acid ester (salt) type, and a phosphine type. For example, Japanese Patent Application Laid-Open No. 60-69198 discloses a tool grinding oil containing an amine (phosphite) of an alcohol (ethoxylate) or an alkylphenol (ethoxylate) and an amine. JP-A-6-192676 discloses a plastic working oil composition containing a lubricating base oil containing an acid phosphate amine salt such as lauryl acid phosphate cocoalkylamine salt. JP-A-8-134488 discloses a lubricating oil composition containing, in a base oil, an acidic phosphate ester amine salt such as a salt of octyl acidic phosphate ester and diisotridecylamine, and a linear alkylamine. are doing. JP-A-11-131
No. 085 discloses a phosphorus-based lubricating oil additive comprising a reaction product obtained by reacting an acidic phosphoric ester with an amino alcohol. Japanese Patent Application Laid-Open No. 9-296195 discloses a cutting / grinding oil comprising an acid phosphate, zinc dithiophosphate or molybdenum dithiocarbamate, calcium sulfonate and the like.

[0004]

However, the phosphorus-based lubricants disclosed in these prior arts could not provide satisfactory extreme pressure performance. Therefore, the present inventors have studied and found that a lubricant containing a phosphite having a (poly) oxyalkylene group or a neutralized product of a basic compound thereof and an organic molybdenum compound gives excellent lubricity. Discovered and completed the present invention.

[0005]

SUMMARY OF THE INVENTION The present invention provides a lubricating base, as the component (A), the general formula ^{(1) [R 1 O- (} R 2 -O) m] n -P- [—OH] _3-n (1) (wherein, R ¹ and R ² represent a hydrocarbon group, m represents a number of 1 or more, and n represents a number of 1 to 3). A lubricating composition containing a phosphate ester compound or a neutralized product thereof and a basic compound; and an organic molybdenum compound as the component (B).

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The component (A) of the present invention is a phosphite represented by the general formula (1) or a neutralized product thereof with a basic compound. In the general formula (1), R ¹
Represents a hydrocarbon group. As the hydrocarbon group, for example,
Examples include an alkyl group, an alkenyl group, an aryl group, a cycloalkyl group, and a cycloalkenyl group.

The alkyl group includes, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl,
Secondary butyl, tertiary butyl, pentyl, isopentyl, secondary pentyl, neopentyl, tertiary pentyl, hexyl, secondary hexyl, heptyl, secondary heptyl, octyl, 2-ethylhexyl, secondary octyl, nonyl, secondary nonyl, Decyl, secondary decyl, undecyl,
Secondary undecyl, dodecyl, secondary dodecyl, tridecyl, isotridecyl, secondary tridecyl, tetradecyl,
Secondary tetradecyl, hexadecyl, secondary hexadecyl,
Stearyl, icosyl, docosyl, tetracosyl, triacontyl, 2-butyloctyl, 2-butyldecyl,
2-hexyloctyl, 2-hexyldecyl, 2-octyldecyl, 2-hexyldecyl, 2-octyldodecyl, 2-decyltetradecyl, 2-dodecylhexadecyl, 2-hexadecyloctadecyl, 2-tetradecyloctadecyl, monomethyl Branched-isostearyl and the like. From the viewpoint of lubricity, the alkyl group preferably has 6 to 36 carbon atoms, and more preferably has 10 to 24 carbon atoms.

The alkenyl group includes, for example, vinyl,
Allyl, propenyl, butenyl, isobutenyl, pentenyl, isopentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tetradecenyl, oleyl and the like. From the viewpoint of lubricity, the alkenyl group preferably has 6 to 36 carbon atoms, and more preferably has 10 to 24 carbon atoms.

As the aryl group, for example, phenyl,
Toluyl, xylyl, cumenyl, mesityl, benzyl,
Phenethyl, styryl, cinnamyl, benzhydryl,
Trityl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonylphenyl, decylphenyl, undecylphenyl, dodecylphenyl, phenylphenyl, benzylphenyl, styrenated phenyl, p-cumylphenyl, α-naphthyl, β-naphthyl and the like. From the viewpoint of lubricity, the aryl group preferably has 6 to 36 carbon atoms and has 10 to 10 carbon atoms.
24 are more preferred.

The cycloalkyl group and the cycloalkenyl group include those having a substituent. For example, cyclopentyl, cyclohexyl, cycloheptyl, methylcyclopentyl, methylcyclohexyl, methylcycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, methylcyclo Pentenyl, methylcyclohexenyl, methylcycloheptenyl and the like can be mentioned. From the viewpoint of lubricity, the cycloalkyl group and cycloalkenyl group preferably have 6 to 36 carbon atoms, including substituents, and more preferably have 10 to 24 carbon atoms. Among these, an alkyl group or alkenyl group having 6 to 36 carbon atoms is particularly preferable from the viewpoint of lubricity.

In the general formula (1), R ² represents an alkylene group. The alkylene group may have 2 to 4 carbon atoms.
Is preferably an alkylene group, more preferably an ethylene group or a propylene group. General formula (1)
(R ² —O) _m portion is obtained by addition polymerization of alkylene oxides such as ethylene oxide, propylene oxide, butylene oxide, tetrahydrofuran (1,4-butylene oxide), long-chain α-olefin oxide, and styrene oxide. Can be obtained by When the (R ² —O) _m portion is formed by adding an alkylene oxide or the like, R ² is determined by the type of the alkylene oxide or the like to be added. The polymerization form of the alkylene oxide or the like to be added is not particularly limited, and homopolymerization of one kind of alkylene oxide or the like,
Any of random copolymerization, block copolymerization, random / block copolymerization of two or more kinds of alkylene oxides and the like may be used.

Depending on what oxyalkylene chain constitutes the (R ² -O) _m moiety, the general formula (1)
Can control the oil solubility or water solubility of the phosphite represented by Whether the phosphite represented by the general formula (1) becomes oil-soluble or water-soluble cannot be unconditionally determined because of the relationship with the group represented by R ^1. Is, as a part of (R ² —O) _m ,
It is preferable to use an oxyalkylene chain obtained by addition polymerization of 8 to 10 mol or more of ethylene oxide or an oxyalkylene chain formed by copolymerizing 8 to 10 mol or more of ethylene oxide with propylene oxide. When the phosphite represented by the general formula (1) is made oil-soluble, the number of oxyethylene groups contained in the (R ² —O) _m portion is set to 8 to 10 mol or less, or propylene oxide is used. Alternatively, an oxyalkylene chain obtained by addition polymerization of butylene oxide is preferable. In the present invention, the value of the degree of polymerization m of the oxyalkylene chain represented by (R ² —O) _m is preferably in the range of 1 to 30, more preferably 1 to 20.

The method for producing the phosphite represented by the general formula (1) may be a known method, for example, a method of dehydrating and condensing a (poly) oxyalkylene ether and phosphorous acid. In the case of producing the phosphite represented by the general formula (1) by this method, if the amount of the (poly) oxyalkylene ether charged relative to the phosphorous acid is controlled, the resulting phosphite is esterified. The degree can be controlled. For example, a monoester having an average degree of esterification of 1 by reacting 1 mol of polyoxyalkylene ether and 1 mol of phosphorous acid, and a monoester having an average degree of esterification of 2 by reacting 2 mol of polyoxyalkylene ether and 1 mol of phosphorous acid. A diester can be obtained.

Further, it can be produced by using a phosphorus chloride such as phosphorus trichloride as a raw material. However, in the case of the present invention, a chlorine atom is mixed as an impurity in this method since it is used as a lubricant. Yes, it is not preferable because it may cause corrosion or rust of the metal, and the former method using phosphorous acid as a raw material is preferable. In addition, it is known that a phosphite shows the following equilibrium state in the case of a diester.

[0015]

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In the present invention, for convenience, the phosphite of the general formula (1) is represented by the chemical formula on the left, but the compound of the formula on the left and the compound of the formula on the right are the same compound.

The phosphite represented by the general formula (1) may be neutralized with a basic compound. The degree of neutralization is not limited to the case where the phosphite and the basic compound represented by the general formula (1) are neutralized by an equivalent amount, and the amount of the basic compound may be too small (partial neutralization). The basic compound may be in excess (excess neutralization). The neutralization method is not particularly limited, and may be a method of directly mixing the phosphite represented by the general formula (1) and the basic compound, or a method of separately adding and mixing them to the substrate.

Examples of the basic compound include metal hydroxides such as lithium hydroxide, sodium hydroxide, potassium hydroxide, magnesium hydroxide and calcium hydroxide; ammonia; methylamine, dimethylamine, ethylamine;
Diethylamine, (iso) propylamine, di (iso)
Propylamine, butylamine, dibutylamine, hexylamine, dihexylamine, octylamine, dioctylamine, 2-ethylhexylamine, di (2-ethylhexyl) amine, decylamine, didecylamine, dodecylamine, didodecylamine, tridecylamine, ditridecyl Amine, cetylamine, dicetylamine, cocoalkylamine, di (cocoalkyl) amine, alkylamine derived from soybean oil, di (alkyl derived from soybean oil) amine, alkylamine derived from tallow, di (alkyl derived from tallow) amine, oleylamine, dioleylamine,
Alkylamines such as stearylamine and distearylamine; polyalkylenepolyamines such as ethylenediamine, propylenediamine, diethylenetriamine, dipropylenetriamine, triethylenetetramine, tetraethylenepentamine and pentaethylenehexamine; monoethanolamine and N-methylmono Ethanolamine, N, N-dimethylmonoethanolamine, N-ethylmonoethanolamine, diethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, triethanolamine, monopropanolamine,
Dipropanolamine, tripropanolamine, 2-
Amino-2-methyl-1-propanol, 2-amino-
2-methyl-1,3-propanediol, aminoethylethanolamine, N, N, N ′, N′-tetrakis (hydroxyethyl) ethylenediamine, N, N,
Alkanolamines such as N ', N'-tetrakis (2-hydroxypropyl) ethylenediamine or alkylene oxide adducts thereof; N-butylmonoethanolamine, N-hexylmonoethanolamine, N-octylmonoethanolamine, N- Decyl monoethanolamine, N-cocoalkyl monoethanolamine, N
-Alkyl monoethanolamine derived from soybean oil, alkyl monoethanolamine derived from N-tallow, N-oleyl monoethanolamine, N-stearyl monoethanolamine, N-butyl diethanolamine, N-hexyl diethanolamine, N-octyl diethanolamine, N
-Decyldiethanolamine, N-cocoalkyldiethanolamine, N-soybean-derived alkyldiethanolamine, N-tallow-derived alkyldiethanolamine, N-
Oleyldiethanolamine, N-stearyldiethanolamine, N, N-dibutylmonoethanolamine,
N, N-dihexyl monoethanolamine, N, N-dioctyl monoethanolamine, N, N-didecyl monoethanolamine, N, N-bis (cocoalkyl) monoethanolamine, N, N-bis (alkyl derived from soybean oil) ) N-long chain alkyl alkanolamines such as monoethanolamine, N, N-bis (alkyl tallow) monoethanolamine, N-dioleyl monoethanolamine, N-distearyl monoethanolamine, and alkylene oxide addition thereof Objects and the like.

The phosphite represented by the general formula (1) is usually produced and used as a mixture of a monoester where n = 1 and a diester where n = 2 or a triester where n = 3. You. In the case of a mixture of these phosphites, the mixing ratio depends on the raw material ratio at the time of production,
It can be appropriately selected depending on the amount of water added in the process. The preferred amount of the component (A) is 0.01 to 20% by mass, more preferably 0.1 to 20% by mass, based on the total amount of the lubricating composition.
1 to 10% by mass.

The component (B) of the present invention is an organic molybdenum compound. As the organic molybdenum compound, for example,
Fatty acid molybdenum salts, oxymolybdenum sulfide xanthate, a reaction product of molybdenum trioxide and an acid phosphate,
Reaction product of molybdenum trioxide and fatty acid diethanolamide, reaction product of molybdenum trioxide and glycerin monofatty acid ester, succinimide, carboxylic acid amide or Mannich base or a reaction product of boride thereof and molybdenum trioxide, oxymolybdenum sulfide Examples thereof include dithiocarbamate, sulfurized oxymolybdenum dithiophosphate, and a reaction product of an amine with a molybdenum compound having a pentavalent or hexavalent molybdenum atom. The most preferred organic molybdenum compound is represented by the following general formula (2). Amine which is a reaction product of a sulfurized oxymolybdenum dithiocarbamate, a sulfurized oxymolybdenum dithiophosphate represented by the general formula (3) or an amine represented by the general formula (4) and a compound having a pentavalent or hexavalent molybdenum atom Is an Applied Physics.

[0021]

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[0022]

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R ¹¹ —NH—R ¹² (4)

In the general formulas (2) to (4), R ^{3 to} R
Reference numeral ¹² denotes a hydrocarbon group, for example, an alkyl group, an alkenyl group, an aryl group, a cycloalkyl group, a cycloalkenyl group and the like.

Examples of the alkyl group include methyl, ethyl, propyl, isopropyl, butyl, isobutyl,
Secondary butyl, tertiary butyl, pentyl, isopentyl, secondary pentyl, neopentyl, tertiary pentyl, hexyl, secondary hexyl, heptyl, secondary heptyl, octyl, 2-ethylhexyl, secondary octyl, nonyl, secondary nonyl, Decyl, secondary decyl, undecyl,
Secondary undecyl, dodecyl, secondary dodecyl, tridecyl, isotridecyl, secondary tridecyl, tetradecyl,
Secondary tetradecyl, hexadecyl, secondary hexadecyl,
Stearyl, icosyl, docosyl, tetracosyl, triacontyl, 2-butyloctyl, 2-butyldecyl,
2-hexyloctyl, 2-hexyldecyl, 2-octyldecyl, 2-hexyldecyl, 2-octyldodecyl, 2-decyltetradecyl, 2-dodecylhexadecyl, 2-hexadecyloctadecyl, 2-tetradecyloctadecyl, monomethyl Branched-isostearyl and the like.

Examples of the alkenyl group include vinyl,
Allyl, propenyl, butenyl, isobutenyl, pentenyl, isopentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tetradecenyl, oleyl and the like.

As the aryl group, for example, phenyl,
Toluyl, xylyl, cumenyl, mesityl, benzyl,
Phenethyl, styryl, cinnamyl, benzhydryl,
Trityl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octylphenyl, nonylphenyl, decylphenyl, undecylphenyl, dodecylphenyl, phenylphenyl, benzylphenyl, styrenated phenyl, p-cumylphenyl, α-naphthyl, β-naphthyl and the like.

Examples of the cycloalkyl group and cycloalkenyl group include, for example, cyclopentyl, cyclohexyl, cycloheptyl, methylcyclopentyl, methylcyclohexyl, methylcycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, methylcyclopentenyl, methylcyclohexenyl, methylcyclohexenyl Heptenyl and the like.

Note that R¹¹And R¹²May be a hydrogen atom,
They cannot be hydrogen atoms at the same time. R^Three~ R¹²Are each other
They may be the same or different. That is, R^Three~ R⁶, R⁷~
R^Ten, R ¹¹~ R¹²May be the same or different from each other.
R^Three~ R⁶Are different from each other, the lubricating oil composition
This is preferable for achieving a drain (longer life).
You.

Among them, R ^{3 to} R ¹² are preferably an alkyl group, an alkenyl group or an aryl group. More specifically, in the case of sulfurized oxymolybdenum dithiocarbamate, R ^{3 to} R ⁶ are an alkyl group having 8 to 13 carbon atoms, and in the case of sulfurized oxymolybdenum dithiophosphate, R ^{7 to} R ¹⁰ are each an alkyl group having ⁶ to 13 carbon atoms. In the alkyl group and the molybdenum amine reactant, R ^{11 to} R ¹² have 6 to 18 carbon atoms.
Is preferably an alkyl group. This corresponds to R ³ -R
^{If the} carbon number of the group represented by ¹² is too small, the oil solubility becomes poor. If the carbon number is too large, the melting point becomes high, handling becomes poor, and the activity becomes low.

In the general formulas (2) and (3),
X ¹ to X ^4, X ⁵ to X ⁸ are each a sulfur atom or an oxygen atom may be all a sulfur atom or an oxygen atom of ^{X 1 ~X 4, X 5 ~X} 8, 4 one of X ¹ X ⁴ and X ^{5 to} X ⁸ may each be either a sulfur atom or an oxygen atom. However, considering lubricity and corrosiveness, the abundance ratio of sulfur atom / oxygen atom is 1/3 in number ratio. It is particularly preferred that the ratio is 3/1.

The pentavalent or hexavalent molybdenum compound to be reacted with the amine represented by the general formula (4) is, for example, molybdenum trioxide or a hydrate thereof (MoO ₃ .n).
H ₂ O), molybdic acid (H ₂ MoO ₄ ), alkali metal molybdate (M ₂ MoO ₄ ; M is an alkali metal atom), ammonium molybdate ((NH ₄ ) ₂ MoO ₄ )
Or (NH ₄ ) ₆ [Mo ₇ O ₂₄ ] .4H ₂ O), MoC
_{l 5, MoOCl 4, MoO 2} Cl 2, MoO 2 Br 2, Mo
_{Although 2} O ₃ Cl _{6 and the} like can be mentioned, hexavalent molybdenum compounds are preferable in consideration of the yield of the molybdenum amine compound. Among the hexavalent molybdenum compounds, readily available molybdenum trioxide or hydrates thereof, molybdic acid, alkali metal molybdate, ammonium molybdate and the like are preferable.

As the component (B), the oxymolybdenum sulfide dithiocarbamate represented by the general formula (2) includes:
More specifically, for example, oxymolybdenum dipropyl dithiocarbamate sulfide, oxymolybdenum dibutyl dithiocarbamate, oxymolybdenum dihexyl dithiocarbamate, oxymolybdenum dioctyl dithiocarbamate, and oxymolybdenum disulfide (2-
Ethylhexyl) dithiocarbamate, oxymolybdenum didecyl thiocarbamate, oxymolybdenum didodecyl dithiocarbamate, oxymolybdenum sulfide di (isotridecyl) dithiocarbamate, oxymolybdenum sulfide (C8 / C13 mixed alkyl) dithiocarbamate, oxymolybdenum distearyl dithiocarbamate, oxysulfide oxy Molybdenum dioleyl dithiocarbamate, oxymolybdenum diphenyl dithiocarbamate sulfide, oxymolybdenum dialkylphenyl dithiocarbamate sulfide, and the like can be given.

As the component (B), the sulfurized oxymolybdenum dithiophosphate represented by the above general formula (3) includes:
More specifically, for example, oxymolybdenum dipropyl dithiophosphate sulfide, oxymolybdenum dibutyl dithiophosphate, oxymolybdenum dihexyl dithiophosphate, oxymolybdenum dioctyl dithiophosphate sulfide, oxymolybdenum disulfide (2-
Ethylhexyl) dithiophosphate, oxymolybdenum didecyl thiophosphate sulfide, oxymolybdenum sulfide dodecyl dithiophosphate, oxymolybdenum sulfide di (isotridecyl) dithiophosphate, oxymolybdenum sulfide (C8 / C13 mixed alkyl) dithiophosphate, oxymolybdenum distearyl dithiophosphate, oxysulfide oxysulfide Molybdenum dioleyl dithiophosphate, oxymolybdenum diphenyl dithiophosphate sulfide, oxymolybdenum dialkylphenyl dithiophosphate sulfide and the like can be mentioned.

As the component (B), oxymolybdenum dithiocarbamate sulfide represented by the above general formula (2) can be used.
Only one of a sulfurized oxymolybdenum dithiophosphate represented by the general formula (3) or a molybdenum amine reactant which is a reaction product of the amine represented by the general formula (4) and a compound having a pentavalent or hexavalent molybdenum atom May be used or two or more of them may be used in combination, but at least one of them is preferably a sulfurized oxymolybdenum dithiocarbamate represented by the general formula (2).

The addition amount of component (B) is not particularly limited, but if the addition amount is too small, the effect of reducing friction is not sufficient, and if the addition amount is too large, it tends to cause sludge and corrosion. When the amount of the organic molybdenum compound is relatively small (generally, about 300 ppm by mass or less based on the amount of molybdenum with respect to the base material), the wear resistance effect is remarkable, and when the amount is relatively large, the friction reducing effect is remarkable. It is said to appear in Therefore, the amount of addition is preferably 10 to 30,000 mass pp based on the amount of molybdenum relative to the lubricating substrate.
m, more preferably 50 to 20,000 ppm by mass, still more preferably 100 to 10,000 ppm by mass.

The lubricating composition of the present invention can be obtained by adding the above components (A) and (B) to a lubricating base material. When an oil-soluble lubricating composition is used, a mineral oil, a synthetic oil or an oil or fat is used as a lubricating base material, and when a water-soluble lubricating composition is used, water or a solvent dissolved or dispersed in water is added. Is a lubricating base material.

The lubricating base material which can be used in the present invention is, when used as an oil-soluble lubricating oil, a mineral oil, a synthetic oil, a fat or a mixture thereof, and a grease. A base grease containing a thickener mixed with oil. In addition, when used as an aqueous lubricating oil, the base material is water or a material obtained by adding an appropriate solvent to water.

When the lubricating composition of the present invention is used as a lubricating oil, the kinematic viscosity of the base oil is not particularly limited, but is preferably 1 to 50 mm ² / s at 100 ° C. and 10 to 50 mm at 40 ° C.
The viscosity index (VI) is about 1,000 mm ² / s, preferably 100 or more, more preferably 120 or more, and most preferably 135 or more.

The mineral oil used as the base oil in the lubricating composition of the present invention is separated from natural crude oil, and is produced by appropriately distilling, refining and the like. Mineral oil is mainly composed of hydrocarbons (mostly paraffins), and also contains monocyclic naphthenes, bicyclic naphthenes, aromatics, and the like. Base oils which have been subjected to hydrorefining, solvent dewaxing, solvent extraction, solvent dewaxing, hydrogen dewaxing, catalytic dewaxing, hydrocracking, alkali distillation, sulfuric acid washing, clay treatment, etc. are also preferably used. be able to. These purification means are appropriately combined, and it is effective to repeat the same treatment in a plurality of stages. For example, (A)
A method of subjecting a distillate to a solvent extraction treatment, or a solvent extraction treatment, followed by a hydrogenation treatment, followed by sulfuric acid washing, (B) a method of subjecting a distillate oil to a hydrogenation treatment and then a dewaxing treatment, (C) a distillate A method of hydrotreating oil after solvent extraction,
(D) a method in which distillate is subjected to solvent extraction and then clay treatment, (E) a distillate is subjected to two-stage or three-stage or more hydrogenation, or a subsequent alkali distillation or sulfuric acid washing treatment, F) a method of subjecting a distillate to hydrotreating or hydrotreating, followed by alkali distillation or sulfuric acid washing;
Alternatively, a method of mixing these treated oils is effective.

By performing these treatments, it is possible to remove aromatic components, sulfur content, nitrogen content and the like in the unrefined mineral oil. According to the present technology, these impurities can be removed to a trace amount or less, but the aromatic component has an effect of making the lubricating oil additive easy to dissolve. There is also. For example, the sulfur content and the nitrogen content in the currently used highly refined mineral oil are 0.01% by mass or less, and in some cases 0.005% by mass or less.
On the other hand, the content of the aromatic component is 1% by mass or less, and in some cases, the content is 0.1% by mass.
Some of them have a content of not more than 05% by mass and others have a content of about 3% by mass.

The synthetic oil used as the base oil in the lubricating composition of the present invention is a chemically synthesized lubricating oil,
For example, poly-α-olefin, polyisobutylene (polybutene), diester, polyol ester, aromatic polycarboxylic acid ester, phosphate ester, silicate ester, polyalkylene glycol, polyphenyl ether, silicone, fluorinated compound, alkylbenzene, etc. Is mentioned. Among them, poly-α-olefin, polyisobutylene (polybutene), diester, polyol ester, polyalkylene glycol and the like can be used for general purposes, and can be preferably used for internal combustion engine oil, processing oil and the like.

As the poly-α-olefin, for example,
Examples thereof include those obtained by polymerizing or oligomerizing 1-hexene, 1-octene, 1-nonene, 1-decene, 1-dodecene, and 1-tetradecene, and those obtained by hydrogenating them. Examples of the diester include dibasic acids such as glutaric acid, adipic acid, azelaic acid, sebacic acid and dodecane diacid, and diesters of alcohols such as 2-ethylhexanol, octanol, decanol, dodecanol and tridecanol. Examples of the polyol ester include neopentyl glycol, trimethylolethane, trimethylolpropane,
Glycerin, pentaerythritol, sorbitol, dipentaerythritol, tripentaerythritol, or a polyol such as an alkylene oxide adduct thereof, butyric acid, isobutyric acid, valeric acid, isovaleric acid, pivalic acid, capric acid, caproic acid, caprylic acid And esters with fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid and oleic acid. Examples of the polyalkylene glycol include polyethylene glycol, polypropylene glycol, polyethylene glycol monomethyl ether, mono- or dimethyl ether of a block or random copolymer of ethylene oxide / propylene oxide, and the like.

Since these synthetic oils are each chemically synthesized, they are single substances or mixtures of homologues. Therefore, for example, synthetic oils such as poly-α-olefins, polyisobutylene (polybutene), diesters, polyol esters, and polyalkylene glycols include benzene which is an impurity contained in mineral oil, polycyclic condensed aromatic components, thiophene , And nitrogen such as indole and carbazole are not included.

When used as a grease, a thickener is added to the above lubricating base oil to form a base grease. As the thickener, for example, soap-based or complex soap-based thickener, terephthalamate-based thickener, urea-based thickener,
Organic non-soap thickeners, inorganic non-soap thickeners and the like can be mentioned.

Examples of the soap thickener include lauric acid, myristic acid, palmitic acid, stearic acid, 12
-A soap obtained by reacting a higher fatty acid such as hydroxystearic acid, arachiic acid, behenic acid, zomalic acid, oleic acid, linoleic acid, linolenic acid, ricinoleic acid and a base such as aluminum, barium, calcium, lithium, sodium, potassium, etc. And a complex soap thickener obtained by further reacting the above fatty acid and base with acetic acid, benzoic acid, sebacic acid, azelaic acid, phosphoric acid, boric acid, or the like.

Examples of the organic non-soap-based thickener include terephthalate-based thickeners, urea-based thickeners, and fluorine-based materials such as polytetrafluoroethylene and fluorinated ethylene-propylene copolymers. However, a urea thickener is preferred. Examples of the urea-based thickener include a monourea-based compound obtained by reacting a monoisocyanate and a monoamine, a diurea-based compound obtained by reacting a diisocyanate and a monoamine, a urea-urethane-based compound obtained by reacting a diisocyanate with a monoamine and a monool, Examples include a tetraurea-based compound obtained by reacting a diamine and a monoisocyanate.

These thickeners may be used alone,
Further, two or more kinds may be combined. The amount of the thickener is not particularly limited, but is usually preferably 3 to 40% by mass, more preferably 5 to 20% by mass, based on the base grease comprising the base oil and the thickener. The consistency of the base grease comprising the base oil and the thickener is not particularly limited, but is usually 10
It is about 0 to 500.

The lubricating composition of the present invention may contain other lubricants such as an oil agent, a friction modifier, an extreme pressure agent, an antioxidant, a detergent, a dispersant, a viscosity index improver, a defoamer, It can be used in combination with rust agents, pour point depressants, emulsifiers, surfactants, rust inhibitors, preservatives, thickeners, solid lubricants and the like.

Examples of the oily agent include capric acid, caproic acid, pelargonic acid, caprylic acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, and arachiic acid (C ₂₀ ). gadoleic acid (C _22F1), behenic acid (C _22), erucic acid (C _22F1), lignoceric acid (C _24), selacholeic acid (C _24F1), cerotic acid (C _26), montanic acid (C _28), melissic Acid (C ₃₀ ), celloplastic acid (C
₃₅ ), fatty acids such as ricinoleic acid and 12-hydroxystearic acid; dicarboxylic acids such as dimer acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid and dodecane diacid; lauryl alcohol, myristyl alcohol, Alcohols such as palmityl alcohol, stearyl alcohol and oleyl alcohol; laurylamine, myristylamine, palmitylamine,
Amines such as stearylamine and oleylamine; amides such as laurylamide, myristylamide, palmitylamide, stearylamine and oleylamine; and the aforementioned alkanolamines and N-long-chain alkylalkanolamines. In addition, alkanolamine or N-
Long chain alkyl alkanolamines may act as rust inhibitors or preservatives

Examples of the friction modifier include capric acid (mono, di, or tri) glyceride, caproic acid (mono, di, tri) glyceride, caprylic acid (mono, di, or tri) glyceride, lauric acid (mono) Glyceride, myristic acid (mono, di, or tri)
Glyceride, palmitic acid (mono, di, or tri) glyceride, stearic acid (mono, di, or tri) glyceride, oleic acid (mono, di, or tri) glyceride, ricinoleic acid, or 12-hydroxystearic acid polycondensate (Poly) such as esters of (poly) glycerin oleyl ether and (poly) glycerin lauryl ether
Metal salts such as glycerin ether, zinc dithiocarbamate, and lead dithiophosphate are included. Some of these have rust prevention performance or oxidation prevention performance.

Examples of the extreme pressure agent include sulfided olefin, sulfided paraffin, sulfided polyolefin, sulfided lard, sulfided fish oil, sulfided whale oil, sulfided soybean oil, sulfided pinene oil,
Sulfurized phenol, sulfurized alkylphenol, sulfurized fatty acid, dialkyl polysulfide, dibenzyl disulfide, diphenyl disulfide, polyphenylene sulfide, alkyl mercaptan, alkyl sulfonic acid, dithiocarbamic acid ester, 2,5-dimercapto-1,
Sulfur-based compounds such as 3,4-thiadiazole derivatives, thiuram disulfide, dialkyldithiophosphoric acid dimer;
Butyl (thio or dithio) phosphate or phosphite, hexyl (thio or dithio) phosphate or phosphite, octyl (thio or dithio) phosphate or phosphite, 2-ethylhexyl (thio or dithio) phosphate or phosphite, Nonyl (thio or dithio) phosphate or phosphite, decyl (thio or dithio) phosphate or phosphite, lauryl (thio, dithio) phosphate or phosphite, myristyl (thio, dithio) phosphate or phosphite, palmityl (thio, Or dithio) phosphate or phosphite, stearyl (thio or dithio) phosphate or phosphite, oleyl (thio,
Or dithio) phosphate or phosphite, phenyl (thio or dithio) phosphate or phosphite,
(Thio or dithio) phosphate or phosphite compounds such as cresyl (thio or dithio) phosphate or phosphite. Some of these compounds have antioxidant performance.

Examples of the phenolic antioxidant include 2,6-di-tert.-butylphenol (hereinafter, tert.-butyl is abbreviated as t-butyl).
2,6-di-t-butyl-p-cresol, 2,6-di-t-butyl-4-methylphenol, 2,6-di-t
-Butyl-4-ethylphenol, 2,4-dimethyl-
6-t-butylphenol, 4,4'-methylenebis (2,6-di-t-butylphenol), 4,4'-bis (2,6-di-t-butylphenol), 4,4'-
Bis (2-methyl-6-t-butylphenol), 2,
2'-methylenebis (4-methyl-6-t-butylphenol), 2,2'-methylenebis (4-ethyl-6-
t-butylphenol), 4,4'-butylidenebis (3-methyl-6-t-butylphenol), 4,4 '
-Isopropylidenebis (2,6-di-tert-butylphenol), 2,2'-methylenebis (4-methyl-6-
Cyclohexylphenol), 2,2′-methylenebis (4-methyl-6-nonylphenol), 2,2′-isobutylidenebis (4,6-dimethylphenol),
2,6-bis (2'-hydroxy-3'-t-butyl-
5'-methylbenzyl) -4-methylphenol, 3-
t-butyl-4-hydroxyanisole, 2-tert-butyl-4-hydroxyanisole, stearyl 3- (4-hydroxy-3,5-di-tert-butylphenyl) propionate, 3- (4-hydroxy-3 Oleyl, 5-di-t-butylphenyl) propionate, dodecyl 3- (4-hydroxy-3,5-di-t-butylphenyl) propionate, 3- (4-hydroxy-3,5-di-t -Butylphenyl) decyl propionate, octyl 3- (4-hydroxy-3,5-di-t-butylphenyl) propionate, tetrakis {3- (4-hydroxy-3,5)
-Di-t-butylphenyl) propionyloxymethyldimethane, 3- (4-hydroxy-3,5-di-t-
Butylphenyl) propionic acid glycerin monoester, 3- (4-hydroxy-3,5-di-t-butylphenyl) propionic acid and glycerin monooleyl ether, 3- (4-hydroxy-3,5-diethyl ―
(t-butylphenyl) propionic acid butylene glycol ester, 3- (4-hydroxy-3,5-di-t-butylphenyl) propionic acid thiodiglycol ester, 4,4′-thiobis (3-methyl-6-t -Butylphenol), 4,4'-thiobis (2-methyl-6-)
t-butylphenol), 2,2'-thiobis (4-methyl-6-t-butylphenol), 2,6-di-t-
Butyl-α-dimethylamino-p-cresol, 2,6
-Di-t-butyl-4- (N, N'-dimethylaminomethylphenol), bis (3,5-di-t-butyl-4)
-Hydroxybenzyl) sulfide, tris ｛(3,
5-di-t-butyl-4-hydroxyphenyl) propionyl-oxyethyl diisocyanurate, tris (3,5-di-t-butyl-4-hydroxyphenyl)
Isocyanurate, 1,3,5-tris (3,5-di-
t-butyl-4-hydroxybenzyl) isocyanurate, bis {2-methyl-4- (3-n-alkylthiopropionyloxy) -5-t-butylphenyl} sulfide, 1,3,5-tris (4-t -Butyl-3-hydroxy-2,6-dimethylbenzyl) isocyanurate, tetraphthaloyl-di (2,6-dimethyl-4-t)
-Butyl-3-hydroxybenzyl sulfide), 6
-(4-hydroxy-3,5-di-t-butylanilino) -2,4-bis (octylthio) -1,3,5-triazine, 2,2-thio-２diethyl-bis-3-
(3,5-di-t-butyl-4-hydroxyphenyl)｝ propionate, N, N′-hexamethylenebis (3,5-di-t-butyl-4-hydroxy-hydrocinamide), 3,5-di -T-butyl-4-hydroxy-
Benzyl-phosphate diester, bis (3-methyl-4-
(Hydroxy-5-t-butylbenzyl) sulfide,
3,9-bis [1,1-dimethyl-2- {β- (3-t
-Butyl-4-hydroxy-5-methylphenyl) propionyloxydiethyl] -2,4,8,10-tetraoxaspiro [5,5] undecane, 1,1,3-tris (2-methyl-4- (Hydroxy-5-tert-butylphenyl) butane, 1,3,5-trimethyl-2,4,6-
Tris (3,5-di-t-butyl-4-hydroxybenzyl) benzene, bis {3,3′-bis- (4′-hydroxy-3′-t-butylphenyl) butyric acid} glycol ester, etc. No.

As the amine antioxidant, for example, 1
-Naphthylamine, phenyl-1-naphthylamine, p
-Naphthylamine-based antioxidants such as -octylphenyl-1-naphthylamine, p-nonylphenyl-1-naphthylamine, p-dodecylphenyl-1-naphthylamine and phenyl-2-naphthylamine; N, N'-diisopropyl-p-phenylenediamine , N, N'-diisobutyl-p-phenylenediamine, N, N'-diphenyl-p-phenylenediamine, N, N'-di-β-naphthyl-p-phenylenediamine, N-phenyl-N'-isopropyl- p-phenylenediamine, N-cyclohexyl-N'-phenyl-p-phenylenediamine, N-
1,3-dimethylbutyl-N′-phenyl-p-phenylenediamine, dioctyl-p-phenylenediamine,
Phenylenediamine antioxidants such as phenylhexyl-p-phenylenediamine and phenyloctyl-p-phenylenediamine; dipyridylamine, diphenylamine, p, p'-di-n-butyldiphenylamine, p,
p'-di-t-butyldiphenylamine, p, p'-di-t-pentyldiphenylamine, p, p'-dioctyldiphenylamine, p, p'-dinonyldiphenylamine, p, p'-didecyldiphenylamine, p, p '
-Didodecyldiphenylamine, p, p'-distyryldiphenylamine, p, p'-dimethoxydiphenylamine, 4,4'-bis (4-α, α-dimethylbenzoyl) diphenylamine, p-isopropoxydiphenylamine, dipyridylamine and the like Diphenylamine-based antioxidants; phenothiazine, N-methylphenothiazine,
Examples include phenothiazine antioxidants such as N-ethylphenothiazine, 3,7-dioctylphenothiazine, phenothiazine carboxylate, and phenoselenazine.

Examples of the sulfur-based antioxidants include dioctyl thiodipropionate, didecyl thiodipropionate, dilauryl thiodipropionate, dimyristyl thiodipropionate, distearyl thiodipropionate, and lauryl stearyl thiopionate. Dipropionate, dimyristylthiodipropionate, distearyl-β,
β'-thiodibutyrate, (3-octylthiopropionic acid) pentaerythritol tetraester, (3-decylthiopropionic acid) pentaerythritol tetraester, (3-laurylthiopropionic acid) pentaerythritol tetraester, (3-stearyl Thiopropionic acid) pentaerythritol tetraester, (3
-Oleylthiopropionic acid) pentaerythritol tetraester, 2-mercaptobenzimidazole, 2
-Mercaptomethylbenzimidazole, 2-benzimidazole disulfide, dilauryl sulfide, amylthioglycolate and the like. Examples of the metal salt antioxidant include nickel dithiocarbamate,
Zinc-2-mercaptobenzimidazole and the like.

Examples of the metal detergent include metal sulfonates such as (mono or di) alkylbenzene sulfonic acid metal salt, (mono or di) alkyl naphthalene sulfonic acid metal salt, and petroleum petroleum sulfonic acid metal salt: (mono or di) alkyl phenol Metal phenates such as metal salts, thiobis {(mono or di) alkylphenol} metal salts, and methylenebis {(mono or di) alkylphenol} metal salts;
Metal salicylates such as (mono or di) alkyl salicylic acid metal salts, thiobis {(mono or di) alkyl salicylic acid} metal salts, and methylene bis {(mono or di) alkyl salicylic acid} metal salts. As a metal atom of these metal detergents, an alkali metal or an alkaline earth metal is preferable, and calcium, magnesium, and barium are more preferable.

Examples of the ashless dispersant include succinimide, benzylamine, succinate, and boron-modified products thereof. Examples of the viscosity index improver include poly (C1-18) alkyl methacrylate, (C1-18) alkyl acrylate / (C1-1)
8) alkyl methacrylate copolymer, diethylaminoethyl methacrylate / (C1-18) alkyl methacrylate copolymer, ethylene / (C1-18) alkyl methacrylate copolymer, polyisobutylene, polyalkylstyrene, ethylene / propylene copolymer, Examples include a styrene / maleic acid ester copolymer, a styrene / maleic acid amide copolymer, a styrene / butadiene hydrogenated copolymer, and a styrene / isoprene hydrogenated copolymer. The average molecular weight is about 10,000 to 1,500,000.

As the metal deactivator, for example, N,
N'-salicylidene-1,2-propanediamine, alizarin, tetraalkylthiuram disulfide, benzotriazole, benzimidazole, 2-alkyldithiobenzimidazole, 2-alkyldithiobenzothiazole, 2- (N, N-dialkyldithiocarbamoyl ) Benzothiazole, 2,5-bis (alkyldithio) -1,3,4-thiadiazole, 2,5-bis (N, N-dialkyldithiocarbamoyl) -1,3,
4-thiadiazole and the like.

Examples of the antifoaming agent include polydimethyl silicone, trifluoropropyl methyl silicone, colloidal silica, polyalkyl acrylate, polyalkyl methacrylate, alcohol ethoxy / propoxylate, fatty acid ethoxy / propoxylate, and sorbitan partial fatty acid ester. No.

Examples of solid lubricants include graphite, molybdenum disulfide, polytetrafluoroethylene,
Fatty acid alkaline earth metal salts, mica, cadmium dichloride,
Cadmium diiodide, calcium fluoride, lead iodide, lead oxide, titanium carbide, titanium nitride, aluminum silicate, antimony oxide, cerium fluoride, polyethylene,
Examples include diamond powder, silicon nitride, boron nitride fluorocarbon, melamine isocyanurate, and the like.

Examples of the surfactant include polyethylene glycol, polyethylene glycol monoalkyl (or alkylaryl) ether, polyethylene glycol dialkyl (or alkylaryl) ether,
Examples include polyoxyethylene polyoxypropylene copolymers, polyol esters, polyether polyols, alkanolamides, alkylbenzene sulfonic acids, petroleum sulfonates, and the like. These surfactants may also act as oil agents or emulsifiers.

Examples of the rust preventive include calcium sulfonate, calcium phenate, calcium salicylate, magnesium sulfonate, magnesium phenate, magnesium salicylate, barium sulfonate, barium phenate, and barium salicylate.

The lubricating composition of the present invention can be used for lubrication for any purpose. For example, industrial lubricating oils,
Turbine oil, machine oil, bearing oil, compressor oil, hydraulic oil, hydraulic oil, internal combustion engine oil, refrigeration oil, gear oil, oil for automatic transmission (ATF), oil for continuously variable continuously variable transmission (CVTF), transformer Axle fluids, metal working oils and the like. or,
Plain bearings, rolling bearings, gears, universal joints, torque limiters, constant velocity joints for automobiles (CV
J), and can be used by adding to various greases such as ball joints, wheel bearings, constant speed gears, and transmission gears.

However, the lubricating composition of the present invention is a composition particularly suitable for use as a metalworking oil. Types of metal processing that can be used include, for example, cutting, grinding, wire drawing, rolling, forging, pressing, extrusion, bending, drawing, stretching, ironing, and roll forming. , A shearing process, a rotating process, a stretching process, a drawing process, a pressing process, and the like.

The metal to be processed using the lubricating composition of the present invention is iron, aluminum, titanium, magnesium, copper, zinc, manganese, an alloy thereof (for example, stainless steel, brass, etc.) or There is no particular limitation on alloys of these with silicon and the like, but a good effect is exhibited particularly when iron, aluminum, and stainless steel are used.

[0066]

EXAMPLES The present invention will be described more specifically with reference to the following examples. In the following examples, "%" is based on mass unless otherwise specified. Lubricating base oil, component (A) and components
As (B), using those described below, blended in the proportions shown in Tables 1 to 3, Examples 1 to 15 and Comparative Examples 1 to
A lubricating composition of No. 6 was prepared.

[0067] <lubricating base oil> paraffinic refined mineral: 40 ° C. kinematic viscosity: 18.3mm ² / s 100 ℃ kinematic viscosity: 4.1 mm ² / s viscosity index (VI): 127

<Component (A)> (A-1): Mono, di [lauryl {polyoxyethylene (m = 2)}] phosphite (mono: di = 1: 1 molar ratio, m is a polyoxyethylene chain) (A-2): Mono, di [isotridecyl {polyoxyethylene (m = 4)}] phosphite (mono: di = 1:
(A-3): mono, di [2-ethylhexyl {polyoxyethylene (m = 2)}] phosphite (mono: di =
(3: 1 molar ratio) di-2-ethylhexylamine neutralized product (phosphorous acid: amine = 2: 1 molar ratio) (A-4): mono, di [2-decyltetradecyl {polyoxypropylene ( m = 8)}] phosphite (mono: di = 1: 1 molar ratio) (A-5): mono, di [stearyl {polyoxypropylene (m = 2)}] phosphite (mono: di = 1: 1) 1
(Molar ratio) (A-6): Mono-, di [oleyl {polyoxyethylene (m = 2)}] phosphite (mono: di = 1: 1 molar ratio) neutralized with acetyldiethanolamine derived from N-soy oil ( Phosphorous acid: amine = 2: 1 molar ratio) (A-7): tri [lauryl {polyoxyethylene (m
= 1.5)}] Phosphite (A'-1): tricresyl phosphate (A'-2): trilauryl phosphite

<Component (B)> (B-1): Oxymolybdenum sulfide (C8 / C13 mixed alkyl) dithiocarbamate (B-2): Oxymolybdenum sulfide (butyl) dithiocarbamate (B-3): Oxymolybdenum sulfide (2-ethylhexyl) dithiophosphate (B-4): Molybdenumamine reactant obtained by reacting 2 mol of N, N-di (isotridecyl) amine with 1 mol of molybdenum trioxide

<Lubricity Test> With respect to each of the lubricating compositions shown in Examples and Comparative Examples, a friction coefficient and a seizure load were measured by the following methods and conditions in order to evaluate the lubricating performance.

(I) Friction coefficient evaluation equipment: Pendulum type friction tester (Soda type II) Temperature: room temperature (ii) Seizure load evaluation equipment: Shell type high-speed four-ball tester Temperature: room temperature Measurement time: 10 seconds rotation Number: 1500 rpm Load: constant Note that the load was measured at a constant load, and the load at which the torque rapidly increased within the measurement time was taken as the seizure load. When the seizure load was not reached, the test ball was changed, and the test was further performed under a higher load. Tables 1 to 3 show these results.

[0072]

[Table 1]

[0073]

[Table 2]

[0074]

[Table 3]

From these results, it is understood that the lubricating composition of the present invention has high lubricity and extreme pressure, and is particularly suitable as a metal working oil.

[0076]

The lubricating composition of the present invention exhibits excellent lubricating properties and extreme pressure properties by combining a phosphite having a (poly) oxyalkylene group with an organic molybdenum compound. Suitable.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C10M 159/18 C10M 159/18 // C10N 10:12 C10N 10:12 30:06 30:06 40:20 40:20 Z (72) Inventor Naoto Namiki 7-35 Higashiogu, Arakawa-ku, Tokyo Asahi Denka Co., Ltd. F-term (reference) 4H104 AA11R AA13R BE01R BG10C BH02C BH07C CH09C DB04C FA06 LA03 PA21

Claims (4)

[Claims] 1. A lubricating base material having the following general formula (1) [R ¹ O- (R ² -O) _m ] _n -P-[-OH] _3-n (1) as a component (A) (Wherein R ¹ and R ² represent a hydrocarbon group, m represents a number of 1 or more, and n represents a number of 1 to 3) or a phosphite compound represented by the formula A lubricating composition containing a neutralized compound of the compound; and an organic molybdenum compound as the component (B). 2. The compound represented by the general formula (1) wherein R ¹ has 6 to 36 carbon atoms.
The lubricating composition according to claim 1, which is an alkyl group or an alkenyl group. 3. The lubricating composition according to claim 1, wherein R ^{2 in the} general formula (1) is an alkylene group having 2 to 4 carbon atoms. 4. The organic molybdenum compound as the component (B) is represented by the following general formula (2): (Wherein, R ^{3 to} R ⁶ represent a hydrocarbon group, and X ^{1 to} X ⁴ represent a sulfur atom or an oxygen atom.) The following oxymolybdenum dithiocarbamate represented by the following general formula (3): ] (Wherein, R ⁷ to R ¹⁰ represents a hydrocarbon group, X ⁵ to X ⁸ is sulfur atom or an oxygen atom.) Molybdenum oxysulfide dithiophosphate represented by, or the following general formula (4) R ¹¹ —NH—R ¹² (4) (wherein, R ¹¹ and R ¹² represent a hydrogen atom or a hydrocarbon group but are not hydrogen atoms at the same time) and a pentavalent or hexavalent molybdenum The lubricating composition according to any one of claims 1 to 3, which is any reaction product with a compound having an atom.