KR20200045519A - Transmission lubricant composition - Google Patents

Abstract

a) synthetic poly-alpha-olefin base fluid; b) organomolybdenum friction modifiers; c) an alkylphosphorothiolate and a hydrocarbylamine antiwear combination; And d) a dihydrocarbyl dithiophosphate extreme pressure additive and optionally e) a copper corrosion inhibitor; f) antifoaming agents; g) solubilizer; h) polymeric viscosity index improvers; And i) an oligomeric viscosity modifier, which is very suitable for use in a synchronizer of a transmission.

Description

Transmission lubricant composition

Cross reference to related applications

This application claims priority to U.S. Provisional Application No. 62 / 551,588 filed on August 29, 2017. The entire contents of the above application are incorporated by reference.

Technical field

The present invention relates to an improved lubricant for a transmission with improved performance with a metal synchromesh component.

Many oils that transmit unoptimized friction or cause high wear of the components cause problems with the synchronizer parts of the transmission, resulting in damage to the synchronizer and defective or failed gears or bearings.

The synchronizer is one of the more important components in every gearbox. The main goals of the synchronizer system are to improve performance, reduce shift force and minimize energy loss between gears. The capacity of the mechanical system is improved, and various synchronizers of various designs and materials are introduced, which makes it possible to economically reengineer the existing synchronizer designs with more efficient designs. Lubricants and additives for transmission lubricants need to be reconfigured such that this design maintains adequate friction between the interacting parts of the synchronizer and prevents them from being worn out.

Conventional gear oil or transmission oil does not adequately protect the lubricated surface from abrasive or corrosive wear.

Thus, a) a synthetic poly-alpha-olefin base fluid; b) organomolybdenum friction modifiers; c) a combination of alkylphosphorothiolate and hydrocarbylamine wear resistance; And d) a dihydrocarbyl dithiophosphate extreme pressure additive.

The lubricant composition advantageously e) a copper corrosion inhibitor; f) antifoaming agents; g) solubilizer; h) polymeric viscosity index improvers; And i) an oligomeric viscosity modifier.

Also disclosed is a method of lubricating a surface in a synchronizer of a transmission, comprising supplying a lubricant composition to the synchronizer of the transmission.

Synthetic poly-alpha-olefins include Group IV poly-alpha-olefins (PAO), comprising low-viscosity or high-viscosity fluids. Included are generally C ₂ to about C ₃₂ alpha olefins, such as C ₈ to about C ₁₆ alpha olefins, such as, but not limited to, 1-octene, 1-decene, 1-dodecene, and the like. It is a known PAO material comprising a relatively low molecular weight hydrogenated polymer or oligomer. Examples of poly-alpha-olefins are poly-1-octene, poly-1-decene and poly-1-dodecene, as well as dimers of higher olefins in the C ₁₄ to C ₁₈ range, which provide a low viscosity base stock. In some embodiments, synthetic poly-alpha-olefins include trimers and tetramers of 1-octene and / or 1-decene.

Low viscosity PAO fluids include, for example, aluminum trichloride, boron trifluoride or boron trifluoride with water, alcohols such as ethanol, propanol or butanol complexes, carboxylic acids or esters such as ethyl acetate or ethyl propio It can be prepared through the polymerization of an alphaolefin in the presence of a polymerization catalyst comprising a nate, such as a Friedel-Crafts catalyst. The method is described, for example, in US Pat. No. 3,382,291; 3,742,082; 3,769,363; 3,876,720; 4,149,178; 4,239,930; 4,367,352; 4,413,156; 4,434,408; 4,910,355; 4,956,122; And 5,068,487.

In some embodiments, the synthetic base fluid is about 62 wt% (weight percent), about 63, about 64, about 65, about 66, about 67, about 68, about 69, about 70, based on the weight of the total composition. About 71, about 72, about 73, about 74, about 75 or about 76 wt% to about 77, about 78, about 79, about 80, about 81, about 82, about 83, about 84, about 85, about 86, About 87 or about 88 wt%.

Organo-molybdenum friction modifiers include organo-molybdenum dithiocarbamate, organo-molybdenum dithiophosphate, molybdenum carboxylate salt, molybdenum-amine complex, molybdenum amine / alcohol / amide complex, molybdenum cluster compound and molybdenum disulfide.

In certain embodiments, the organomolybdenum friction modifier, based on the total weight of the composition, is about 0.2 wt% to about 1.0 wt% or about 0.3 wt% to about 0.7, about 0.8 or about 0.9 wt%; For example, about 0.40 wt%, about 0.41, about 0.42, about 0.43, about 0.44, about 0.45, about 0.46, about 0.47, about 0.48, about 0.49, about 0.50 or about 0.51 wt% to about 0.52, about 0.53, about 0.54, about 0.55, about 0.56, about 0.57, about 0.58, about 0.59 or about 0.60 wt%.

In some embodiments, the alkylphosphorothiolate is of the formula:

Where,

R ₁ , R ₂ and R ₃ are each independently hydrocarbyl or hydrogen, and at least one of R ₁ , R ₂ and R ₃ is hydrocarbyl,

X ₁ , X ₂ and X ₃ are independently oxygen or sulfur; For example, each X ₁ , X ₂ and X ₃ is oxygen or sulfur, respectively, _{2 of} X ₁ , X ₂ and X ₃ are oxygen and the other is sulfur or _{2 of} X ₁ , X ₂ and X ₃ Is sulfur and the other is oxygen.

Hydrocarbylamine is an alkylene diamine, for example N-hydrocarbyl trimethylene diamine, for example N-oleyl-trimethylene diamine, N-tallow-trimethylene diamine or N-coco-trimethylene diamine It can be selected from the group consisting.

In some embodiments, the hydrocarbylamine is a primary hydrocarbylamine, such as C ₄ -C ₃₀ alkylamine or C ₈ -C ₂₀ alkylamine, such as n-hexylamine, n-octylamine, n -Decylamine, n-dodecylamine, n-tetradecylamine, n-pentadecylamine, n-hexadecylamine or n-octadecylamine.

In some embodiments, the alkylphosphorothiolate / hydrocarbylamine antiwear additive is about 0.2 wt% to about 1.0 wt% or about 0.3 wt% to about 0.7, about 0.8 or about 0.9, based on the total weight of the composition. wt%; For example, about 0.40 wt%, about 0.41, about 0.42, about 0.43, about 0.44, about 0.45, about 0.46, about 0.47, about 0.48, about 0.49, about 0.50 or about 0.51 wt% to about 0.52, about 0.53, about 0.54, about 0.55, about 0.56, about 0.57, about 0.58, about 0.59 or about 0.60 wt%.

The wt / wt ratio of alkylphosphorothiolate and hydrocarbylamine is, for example, about 1/9, about 1/8, about 1/7, about 1/6, about 1/5, about 1/4, about 1/3, about 1/2 or about 1/1 to about 2/1, about 3/1, about 4/1, about 5/1, about 6/1, about 7/1, about 8/1 or about 9/1.

In some embodiments, the dihydrocarbyl dithiophosphate is of the formula:

Where,

R ₄ , R ₅ and R ₆ are each independently hydrocarbyl.

For example, dihydrocarbyl dithiophosphate is of the formula:

Where,

R ₅ and R ₆ are independently C ₃ -C ₁₈ alkyl, C ₅ -C ₁₂ cycloalkyl, C ₉ -C ₁₀ bicycloalkylmethyl, C ₉ -C ₁₀ tricycloalkylmethyl, phenyl or C ₇ -C ₂₄ R ₅ and R _{6 which} are alkylphenyls or bonded together to an oxygen atom are

이고,

ego,

R ₇ is hydrogen or methyl; For example R ₅ and R ₆ are 2-methylpropyl and R ₇ is methyl.

In certain embodiments, the dihydrocarbyl dithiophosphate extreme pressure additive, based on the total weight of the composition, is about 0.2 to about 1.2 wt% or about 0.3 wt% to about 0.8, about 0.9, about 1.0 or about 1.1 wt%; For example, about 0.50 wt%, about 0.51, about 0.52, about 0.53, about 0.54, about 0.55, about 0.56, about 0.57, about 0.58, about 0.59, about 0.60 or about 0.61 wt% to about 0.62, about 0.63, about 0.64, about 0.65, about 0.66, about 0.67, about 0.68, about 0.69 or about 0.70 wt%.

Anti-wear additives and extreme pressure additives are described, for example, in US Pat. No. 8,404,624 and US Publication 2005/0090410.

Copper corrosion inhibitors constitute another class of additives suitable for inclusion in the compositions of the present invention. Such compounds include thiazoles, triazoles and thiadiazoles. Examples of such compounds are benzotriazole, tolyltriazole, octyltriazole, decyltriazole, dodecyltriazole, 2-mercapto benzothiazole, 2,5-dimercapto-1,3,4-thia Diazole, 2-mercapto-5-hydrocarbylthio-1,3,4-thiadiazole, 2-mercapto-5-hydrocarbyldithio-1,3,4-thiadiazole, 2, 5-bis (hydrocarbylthio) -1,3,4-thiadiazole and 2,5-bis (hydrocarbyldithio) -1,3,4-thiadiazole. For example, 1,3,4-thiadiazole is commercially available and also triazoles such as tolyltriazole and 1,3,4-thiadiazole such as 2,5-bis (alkyldithio) It can be used as a combination of -1,3,4-thiadiazole or 2-alkyldithio-5-mercapto-1,3,4-thiadiazole. Commercial materials of this type include COBRATEC TT-100 and HITEC 4313. 1,3,4-thiadiazole is synthesized from hydrazine and carbon disulfide by generally known procedures. For example, US Patent No. 2,765,289; 2,749,311; 2,760,933; 2,850,453; 2,910,439; 3,663,561; 3,862,798; And 3,840,549.

Copper corrosion inhibitors, in certain embodiments, from about 0.10 wt% to about 0.60 wt% or from about 0.10 wt% to about 0.40 or about 0.50 wt%, based on the total weight of the composition; For example, about 0.10 wt%, about 0.11, about 0.12, about 0.13, about 0.14, about 0.15, about 0.16, about 0.17, about 0.18, about 0.19 or about 0.20 wt% to about 0.21, about 0.22, about 0.23, about 0.24, about 0.25, about 0.26, about 0.27, about 0.28, about 0.29 or about 0.30 wt%.

Anti-foaming agents include silicone oils, silicone resins, and silicone glycols. In one embodiment of the invention, the antifoaming agent comprises silicone oil. In some embodiments of the invention, the anti-foaming agent comprises a hydrocarbon or a blend of silicone and hydrocarbon. In certain embodiments of the present invention, the anti-foaming agent includes trace amounts of silicon components such as silicone oil, silicone resin, silicone glycol, and the like.

The silicone oil is generally not limited, and may include any silicone oil known in the art that does not adversely affect the lubricating properties of the resulting lubricant composition. Suitable silicone oils can include any liquid polymerized siloxane (polyorganosiloxane) comprising one or more organic groups. Examples of suitable silicone oils are polyalkylsiloxanes (e.g. polydimethylsiloxane-PDMS), polyarylsiloxanes, polyalkoxysiloxanes, polyaryloxysiloxanes, fluorinated polysiloxanes (e.g. trifluoropropylmethylsilicone), Combinations thereof, and the like, but are not limited thereto. Generally, silicone oils suitable for use in the present invention have a kinematic viscosity at 25 ° C. of at least 0.5 mm / s (cSt), such as about 0.5 to about 1,000,000 mm ² / s (cSt) or about 10,000 to about 600,000 mm ² It can be / s (cSt). Silicone oil is present in the antifoam in an amount ranging from about 0.01 to 99 wt%, in an amount ranging from about 1 to about 10 wt%, and in an amount up to 1 wt%, based on the total weight of the defoamer, or in the complete absence of the defoamer. You can. In addition, the concentration of the silicone oil present in the lubricating oil composition may range from 0.1 to 500 ppm, 1 to 100 ppm, or 1 to 50 ppm by weight.

Optionally, the antifoaming agent may further include a solvent such as paraffinic mineral oil, naphthenic mineral oil, petroleum naphtha, aromatic, toluene, xylene, benzene, hexane, heptane, octane, dodecane, kerosene and combinations thereof. . Anti-foaming agents can be dispersed or dissolved in a solvent. Anti-foaming agents may include non-ionic surfactants.

In certain embodiments, the anti-foaming agent may have a density of about 0.7 kg / L to about 0.9 kg / L at 20 ° C., a viscosity of less than about 30 mPas at 25 ° C., and a kinematic viscosity of less than about 20 mm ² / s at 40 ° C. . Exemplary anti-foaming agents that can be used in the present invention include, without limitation, Foam Ban ^® 130B and Synative ^® AC AMH 2.

In certain embodiments, the lubricant composition may include a solvent in which the antifoam compound (s) can be dispersed or dissolved.

In some embodiments, the anti-foaming agent is about 0.10 wt% to about 1.20 wt% or about 0.20 wt% to about 0.80, about 0.90, about 1.00 or about 1.10 wt%, based on the total weight of the composition; For example about 0.50 wt%, about 0.51, about 0.52, about 0.53, about 0.54, about 0.55, about 0.56, about 0.57 or about 0.58 to about 0.59, about 0.60 wt% to about 0.61, about 0.62, about 0.63, about 0.64, about 0.65, about 0.66, about 0.67, about 0.68, about 0.69 or about 0.70 wt%.

In another embodiment, the anti-foaming agent is about 0.20 wt%, about 0.21, about 0.22, about 0.23, about 0.24, about 0.25, about 0.26, about 0.27, about 0.28, about 0.29 or about 0.30 wt, based on the total weight of the composition % To about 0.31, about 0.32, about 0.33, about 0.34, about 0.35, about 0.36, about 0.37, about 0.38, about 0.39, about 0.40, about 0.41, about 0.42, about 0.43, about 0.44, about 0.45, about 0.46, About 0.47, about 0.48, or about 0.49 wt%.

In another embodiment, the anti-foaming agent is present at about 0.1 wt% or less, about 0.01 wt% to about 0.1 wt%, or about 0.02 wt% to about 0.06 wt%.

The compositions of the invention are advantageously of solubilizing agents, for example C ₄ -C ₁₄ or C ₆ -C ₁₀ α, ω-di-carboxylic acids having a pour point of about -45 ° C or less, for example -55 ° C or less Oil-soluble di-alkyl esters. For example, diesters comprising C ₈ -C ₁₃ alkanol adipates, azelates, sebacate and mixtures thereof. Examples are tri-methylpropyl tricaprylate, di-isodecyl glutarate, di-isododecyl glutarate, di-isooctyl adipate, di- (2-ethylhexyl) adipate, di-isononyl Adipate, di-isodecyl adipate, di- (tridecyl) adipate, di-propylheptyl adipate, di-propyl adipate, di- (2-ethylhexyl) sebacate, di-isooctyl sebacate, Di-octyl azelate, di-isooctyl azelate, di- (2-ethylhexyl) azelate, di-isooctyl dodecanedieate and mixtures thereof. Mixtures of two or more different types of diesters (eg, dialkyl adipates and dialkyl azelates, etc.) can also be used.

Solubilizing agents may include, for example, about 1.0 wt% to about 9.0 wt% or about 2.0 wt% or about 3.0 wt% to about 7.0 or about 8.0 wt%, based on the total weight of the composition; For example about 4.0 wt%, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9 or about 5.0 wt% to about 5.1, about 5.2, about 5.3, about 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9 or about 6.0 wt%.

Polymeric viscosity index improvers include polyacrylates, polymethacrylates, vinylpyrrolidone / methacrylate copolymers, polyvinylpyrrolidone, polybutene, olefin copolymers, styrene / acrylate copolymers and polyethers do. Commercial polymeric viscosity index improvers include VISCOPLEX and ACRYLOID products.

The polymeric viscosity index improvement can be, for example, from about 1.0 wt% to about 9.0 wt% or from about 2.0 wt% or from about 3.0 wt% to about 7.0 or about 8.0 wt%, based on the total weight of the composition; For example about 4.0 wt%, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9 or about 5.0 wt% to about 5.1, about 5.2, about 5.3, about 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9 or about 6.0 wt%.

Oligomeric viscosity modifiers include olefin co-oligomers, such as ethylene co-alpha-olefin oligomers, such as ethylene-propylene co-oligomers. A commercially available co-oligomer is LUCANT HC 1100.

The oligomeric viscosity modifier is, for example, from about 1.0 wt% to about 9.0 wt% or from about 2.0 wt% or from about 3.0 wt% to about 7.0 or about 8.0 wt%, based on the total weight of the composition; For example about 4.0 wt%, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9 or about 5.0 wt% to about 5.1, about 5.2, about 5.3, about 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9 or about 6.0 wt%.

Hydrocarbyl is any hydrocarbon-containing group, such as aryl, alkaryl, straight or branched chain alkyl or alkenyl, cycloalkyl or cycloalkylalkyl, which is interrupted or substituted by one or more heteroatom-containing groups or aryl groups May be, for example, one or more, e.g. 1 to 3, intervening and / or one or more, e.g. 1 to 3, -O-, -NH- or -C (O) O- groups, It can be substituted by halogen, hydroxyl, carboxyl, amino, thiol, phosphonate or aryl groups. Aryl includes phenyl and substituted phenyl, for example alkyl-substituted phenyl. Hydrocarbyl may contain, for example, 1 to 150 carbon atoms.

The term "organic" is the same as "hydrocarbyl".

Alkyl is a straight or branched chain of 1 to 25 carbon atoms, for example methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, 2-ethylbutyl, n-pentyl, Isopentyl, 1-methylpentyl, 1,3-dimethylbutyl, n-hexyl, 1-methylhexyl, n-heptyl, isoheptyl, 1,1,3,3-tetramethylbutyl, 1-methylheptyl, 3- Methylheptyl, n-octyl, 2-ethylhexyl, 1,1,3-trimethylhexyl, 1,1,3,3-tetramethylpentyl, nonyl, decyl, undecyl, 1-methylundecyl, dodecyl, 1 , 1,3,3,5,5-hexamethylhexyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, aicosyl and docosyl. Alkenyl groups are, for example, unsaturated versions of alkyl groups.

Cycloalkyl is for example C ₅ -C ₁₂ cycloalkyl, for example cyclopentyl or cyclohexyl. Cycloalkylalkyl is for example C ₅ -C ₁₂ cycloalkyl-C ₁ -C ₄ alkyl, for example cyclopentylmethyl, 2-cyclopentylethyl, cyclohexylmethyl or 2-cyclohexylethyl. Bi- or tri-cycloalkyl means, for example, bi-cyclohexylmethyl and the like.

The composition of the present invention is advantageously composed of a solvent, hindered phenolic antioxidant, amine antioxidant, metal passivator, rust inhibitor, pour point depressant, dispersant, additional antifoaming agent, emulsifier, additional friction modifier, additional antiwear additive and mixtures thereof It may contain additional components selected from the group consisting of.

The composition may further include a metal complex compound of hydrocarbyl dithiophosphate of the following formula as an additional anti-wear additive:

Wherein R and R 'are independent from the group consisting of C ₁ -C ₂₀ alkyl, C ₃ -C ₂₀ alkenyl, C ₅ -C ₁₂ cycloalkyl, C ₇ -C ₁₃ aralkyl and C ₆ -C ₁₀ aryl. And M is a metal selected from the group consisting of Al, Pb, Sn, Mn, Co, Ni, Zn and Cu, x is 2 or 3 and y is 1 or 2. Suitable dihydrocarbyl dithiophosphates are, for example, zinc dialkyldithiophosphates.

Solvents include paraffinic mineral oil, naphthenic mineral oil, petroleum naphtha, aromatic, toluene, xylene, benzene, hexane, heptane, octane, dodecane, kerosene and combinations thereof.

Phenolic antioxidants that can be used are C ₇ -C ₉ branched alkyl esters of 3,5-bis (1,1-dimethyl-ethyl) -4-hydroxy-benzenepropanoic acid, 2-t-butylphenol, 2 -t-butyl-4-methylphenol, 2-t-butyl-5-methylphenol, 2,4-di-t-butylphenol, 2,4-dimethyl-6-t-butylphenol, 2-t-butyl -4-methoxyphenol, 3-t-butyl-4-methoxyphenol, 2,5-di-t-butylhydroquinone, 2,6-di-t-butyl-4-alkylphenol such as 2,6-di -t-butylphenol, 2,6-di-t-butyl-4-methylphenol and 2,6-di-t-butyl-4-ethylphenol, 2,6-di-t-butyl-4-alkoxyphenol For example, 2,6-di-t-butyl-4-methoxyphenol and 2,6-di-t-butyl-4-ethoxyphenol, 3,5-di-t-butyl-4-hydroxybenzyl mercap Tooctyl acetate, alkyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate such as n-octadecyl-3- (3,5-di-t-butyl-4-hydride Hydroxyphenyl) propionate, n-butyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate and 2'-ethylhexyl-3- (3,5-di-t -Butyl-4-hydroxyphenyl) Propionate, 2,6-dt-butyl-α-dimethylamino-p-cresol, 2,2'-methylene-bis (4-alkyl-6-t-butylphenol) such as 2,2'-methylenebis (4-methyl-6-t-butylphenol, and 2,2-methylenebis (4-ethyl-6-t-butylphenol), bisphenols such as 4,4'-butylidenebis (3-methyl-6- t-butylphenol), 4,4'-methylenebis (2,6-di-t-butylphenol), 4,4'-bis (2,6-di-t-butylphenol), 2,2- ( Di-p-hydroxyphenyl) propane, 2,2-bis (3,5-di-t-butyl-4-hydroxyphenyl) propane, 4,4'-cyclohexylidenebis (2,6-t -Butylphenol), hexamethylene glycol-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], triethylene glycol bis [3- (3-t-butyl-4 -Hydroxy-5-methylphenyl) propionate], 2,2'-thio- [diethyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], 3, 9-bis {1,1-dimethyl-2- [3- (3-t-butyl-4-hydroxy-5-methyl-phenyl) propionyloxy] ethyl} 2,4,8,10-tetraoxaspiro [5,5] Undecane, 4,4'-thiobis (3- Thyl-6-t-butylphenol) and 2,2'-thiobis (4,6-di-t-butylresorcinol), polyphenols such as tetrakis [methylene-3- (3,5-di- t-butyl-4-hydroxyphenyl) propionate] methane, 1,1,3-tris (2-methyl-4-hydroxy-5-t-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, 2- (3 ', 5'-di-t-butyl-4-hydroxyphenyl) methyl-4- (2 ", 4" -di-t-butyl-3 "-hydroxyphenyl) Methyl-6-t-butylphenol and 2,6-bis (2'-hydroxy-3'-t-butyl-5'-methylbenzyl) -4-methylphenol, and pt-butylphenol-formaldehyde condensate And pt-butylphenol-acetaldehyde condensate.

Amine-based antioxidants that can be conveniently used include alkylated diphenylamines, phenyl-α-naphthylamines, phenyl-β-naphthylamines and alkylated α-naphthylamines.

Exemplary amine-based antioxidants are dialkyldiphenylamines, such as p, p'-dioctyl-diphenylamine, p, p'-di-α-methylbenzyl-diphenylamine and Np-butylphenyl-N-p '-Octylphenylamine, monoalkyldiphenylamine, such as mono-t-butyldiphenylamine and mono-octyldiphenylamine, bis (dialkylphenyl) amine, such as di- (2,4-diethylphenyl) amine And di (2-ethyl-4-nonylphenyl) amine, alkylphenyl-1-naphthylamine, such as octylphenyl-1-naphthylamine and nt-dodecylphenyl-1-naphthylamine, 1-naphthylamine , Arylnaphthylamines such as phenyl-1-naphthylamine, phenyl-2-naphthylamine, N-hexylphenyl-2-naphthylamine and N-octylphenyl-2-naphthylamine, phenylenediamine, such as N, N'-diisopropyl-p-phenylenediamine and N, N'-diphenyl-p-phenylenediamine, and phenothiazines, such as phenothiazine and 3,7-dioctylphenothiazine .

Examples of rust inhibitors include: 1) organic acids, their esters, metal salts, amine salts and anhydrides, such as alkyl- and alkenylsuccinic acids and their partial esters with alcohols, diols or hydroxycarboxylic acids, Partial amides of alkyl- and alkenylsuccinic acids, 4-nonylphenoxyacetic acid, alkoxy- and alkoxyethoxycarboxylic acids such as dodecyloxyacetic acid, dodecyloxy (ethoxy) acetic acid and amine salts thereof, and also N -Oleoyl sarcosine, sorbitan monooleate, lead naphthenate, alkenylsuccinic anhydride, such as dodecenyl succinic anhydride, 2- (2-carboxyethyl) -1-dodecyl-3-methylglycerin and Salts, such as sodium and triethanolamine salts; 2) nitrogen-containing compounds such as: i) primary, secondary or tertiary aliphatic or alicyclic amines and amine salts of organic and inorganic acids, such as oil-soluble alkylammonium carboxylates, and also 1- ( N, N-bis (2-hydroxyethyl) amino) -3- (4-nonylphenoxy) propan-2-ol; ii) heterocyclic compounds such as: substituted imidazolines and oxazolines, 2-heptadecenyl-1- (2-hydroxyethyl) -imidazoline;

3) phosphorus-containing compounds such as amine salts of phosphoric acid partial esters or phosphonic acid partial esters, zinc dialkyldithiophosphates; 4) sulfur-containing compounds such as: barium dinonylnaphthalene-sulfonate, calcium petroleum sulfonate, alkylthio-substituted aliphatic carboxylic acids, esters of aliphatic 2-sulfocarboxylic acids and salts thereof; And 5) glycerin derivatives such as: glycerin monooleate, 1- (alkylphenoxy) -3- (2-hydroxyethyl) glycerin, 1- (alkylphenoxy) -3- (2,3-di Hydroxypropyl) glycerin, 2-carboxyalkyl-1,3-dialkylglycerin.

Pour point depressants include alkylated naphthalene derivatives.

Dispersants / surfactants include polybutenylsuccinamide or -imide, polybutenylphosphonic acid derivatives and basic magnesium, calcium and barium sulfonates, phenolates and salicylates.

Additional anti-foaming agents include alcohol ethoxy / propoxylate, fatty acid ethoxy / propoxylate, sorbitan partial fatty acid ester, and the like.

Emulsifiers include polyetherpolyols and dinonylnaphthalenesulfonates.

Additional friction modifiers include fatty acids and their derivatives (i.e. natural esters of fatty acids such as glycerol monooleate), amides, imides and amines (i.e. oleylamine, diisotridecylamine).

Additional abrasion resistant additives are sulfur- and / or phosphorus- and / or halogen-containing compounds, such as sulfurized olefins and vegetable oils, tritolyl phosphate, tricresyl phosphate, chlorinated paraffins, alkyl and aryl di- and trisulfides, mono- And amine salts of dialkyl phosphates, amine salts of methylphosphonic acids, diethanolaminomethyltolyltriazole, di- (2-ethylhexyl) -aminomethyltolyltriazole, 2,5-dimercapto-1,3, Derivatives of 4-thiadiazole, ethyl (bisisopropyloxyphosphinothioyl) thiopropionate, triphenyl thiophosphate (triphenyl phosphorothioate), tris (alkylphenyl) phosphorothioate and mixtures thereof ( For example, tris (isononylphenyl) phosphorothioate), diphenylmononylphenyl phosphorothioate, isobutylphenyl diphenyl phosphorothioate, 3-hydroxy-1,3-thiaphosfetan 3- Oxide Dodecylamine salt, trithiophosphoric acid 5,5,5-tris-isooctyl 2-acetate, derivative of 2-mercaptobenzothiazole, such as 1-N, N-bis (2-ethylhexyl) aminomethyl-2 -Mercapto-1H-1,3-benzothiazole and ethoxycarbonyl 5-octyldithiocarbamate.

In some embodiments, the additional component is about 21 wt% or less, about 15 wt% or less, about 10 wt% or less, about 5 wt% or less, about 1 wt% or less, about 0.0 wt%, based on the total weight of the composition. To about 0.9 wt% or about 0.1 wt% to about 21 wt%; For example, based on the total weight of the composition, about 1 wt%, about 2, about 3, about 4, about 5, about 6, about 7 or about 8 wt% to about 9, about 10, about 15, about 18 , About 19, about 20 or about 21 wt%. In some embodiments, the additional component is about 0.1 wt% to about 1.2 wt% or about 0.2 wt%, about 0.3 wt%, about 0.4 wt%, or about 0.5 wt% to about 0.6 wt%, about 0.7 wt%, about 0.8 wt%, about 0.9 wt%, about 1 wt% or about 1.1 wt%.

The lubricant composition of the present invention is advantageously measured according to ASTM D445, at about 100 ° C., about 9.0 mm ² / s, about 9.5, about 10.0, about 10.5, about 11.0 or about 11.5 mm ² / s to about 12.0 mm ² / s, about 12.5, about 13.0, about 13.5, about 14.0, about 14.5 or about 15.0 mm ² / s; For example, from about 10.0 mm ² / s to about 14.5 mm ² / s, from about 11.0 mm ² / s to about 13.5 mm ² / s or from about 11.5 mm ² / s to about 1100 mm ² at 100 ° C., measured according to ASTM D445 Kinematic viscosity of 12.5 mm ² / s can be displayed. Alternatively, the lubricant composition may be from about 7 to about 11.5 mm ² / s at 100 ° C., measured according to ASTM D445; Or a kinematic viscosity of about 8 to about 10.5 mm ² / s at 100 ° C or about 9 to about 9.5 mm ² / s at 100 ° C.

The lubricant composition of the present invention is advantageously measured at -40 ° C, from about 10,000 mPa * s, about 15,000, about 20,000, about 25,000 or about 30,000 mPa * s to about 35,000 mPa * s, about 40,000, about as measured according to DIN51398 Dynamic viscosities of 45,000, about 50,000, about 55,000, about 60,000, about 65,000, about 70,000 or about 75,000 mPa * s.

The lubricant composition of the present invention is about 820 kg / m ³ , about 830, about 840, about 850 kg / m ³ to about 860 kg / m ³ , about 870, about 880, about 820, at 15 ° C., measured according to ASTM D4052. Density in the range of 890 or about 900 kg / m ³ .

The phosphorus content in the lubricant composition of the present invention is about 500 ppm, about 600, about 700, about 800, or about 900 ppm to about 1000 ppm, about 1100, about 1200, about 1300, about 1400, or measured according to ASTM 5185. It may range from about 1500 ppm.

The sulfur content in the lubricant composition of the present invention is about 5000 ppm, about 6000, about 7000, about 8000, about 9000, about 9500, about 9800 ppm to about 10000 ppm, about 10500, about 11000, about, as measured according to ASTM 5185 11500, about 12000, about 12500, about 13000, about 14000, or about 15000 ppm.

The synchronizer can include a surface selected from the group consisting of molybdenum, bronze, brass, iron, carbon and steel, for example sintered bronze.

The total weight of the lubricant composition will be 100%, and the components of the composition are adjusted such that the total composition is 100% by weight. All parts and percentages are by weight unless otherwise indicated.

Vehicles include passenger cars, trucks, sport utility vehicles, construction vehicles, vans, step vans, mini vans, jeep, farm vehicles including tractors, military vehicles, small trucks, and the like.

Example

The following examples are presented to aid the understanding of the present invention and should not be construed as specifically limiting the invention described and claimed herein. Such variations of the present invention, including substitutions of all equivalents currently known or to be developed later within the scope of those skilled in the art, and minor changes in experimental design or variations in formulation are within the scope of the invention to which this application pertains. Is considered.

Example 1-Lubricant composition and preparation method thereof

Table 1-Lubricant composition

The lubricant composition of Table 1 can be prepared by:

(B1) pre-blending a portion of the solubilizer with the organomolybdenum friction modifier and stirring in a stirring vessel at ambient temperature;

(B2) The synthetic poly-alpha-olefin base fluid is charged into a blending vessel and heated to about 35-55 ° C. with stirring, then a polymeric viscosity index improver and an oligomeric viscosity modifier are added and the viscosity index improver and viscosity modifier are completely Stirring until dissolved;

(B3) A friction modifier, dihydrocarbyl dithiophosphate extreme pressure additive, additional component (s), alkylphosphorothiolate and hydrocarbylamine antiwear additive combination and copper corrosion inhibitor are charged into the blending vessel, about 10 Stirring at about 35-55 ° C. for minutes to about 1 hour;

(B4) filling the blending vessel from the pre-blend from (B1) and adding the remainder of the solubilizer;

(B5) Cooling the composition in the blending vessel to about 35 ° C., adding an antifoaming agent, and stirring for about 10 minutes to about 1 hour.

It should be understood that the compositions in Table 1 and corresponding blending procedures are illustrative only and should not be construed as limiting.

Example 2-Compatibility test of lubricant composition and sintered bronze friction material

By testing the friction and durability behavior of the lubricant composition using a Standard Synchronizer Test rig ZF / ZFG SSP 180 at a high oil temperature of about 120 ° C., the compatibility of the lubricant composition of Example 1 with a sintered bronze surface of the synchronizer was confirmed. Was evaluated. Daimler's double cone synchronizer DK-140 with sintered bronze (HS45) friction was used. The test was run for 288,935 cycles until failure was observed (the number of cycles in this test repeat varied between about 242,000 and about 289,000 cycles). The minimum friction coefficient at the end of the test was μ _min = 0.070. Shaft wear was rather high. It has been shown that the thermal stability of the lubricant composition is good and there is little deposition of oil components on the test parts.

Example 3-Compatibility test of lubricant composition and molybdenum friction material

Compatibility of the lubricant composition of Example 1 with a synchronizer surface made of molybdenum by testing the occurrence of scuffing and the coefficient of friction using a Standard Synchronizer Test rig ZF / ZFG SSP 180 at a high oil temperature of about 80 ° C. Was evaluated.

Daimler's synchronizer AK-180 with molybdenum (Mo) friction was used. The test was run for a complete 13,000 cycles. Scuffing first occurred in the main-rod stage with pressure p = 1.94 N / mm ² . The number of cycles with scuffing on the main-road stage is small, and then very few on the two main-road stages. The average friction coefficient at the end of the test was μ _avg = 0.070.

There is a need in the art for a lubricant composition that is compatible with a variety of synchronizer friction materials and at the same time passes all other requirements of the Daimler specification for heavy truck manual transmissions according to specification 235.16. The lubricant composition disclosed herein demonstrates good compatibility with various synchronizer friction materials (e.g., bronze and molybdenum) and addresses this need by passing all other requirements of the Daimler specification for large manual transmissions according to specification 235.16. do.

The singular article herein refers to the grammatical object of one or more (eg, at least one) articles. Any range cited herein is inclusive. The term "about" as used throughout is used to describe and account for small variations.

The term "about" means that the numerical value is ± 5%, ± 4%, ± 3%, ± 2%, ± 1%, ± 0.5%, ± 0.4%, ± 0.3%, ± 0.2%, ± 0.1% or ± It can mean that it can be modified to 0.05%. All numerical values are modified by the term "about", whether or not explicitly indicated. Numerical values modified by the term “about” include the identified values; That is, "about 5.0" includes 5.0. The measurable level of atom, element or molecule can vary depending on the detection method. In part, the term "about" is intended to provide this.

U.S. patents listed herein and published U.S. patent applications are incorporated herein by reference.

Claims (46)

Lubricant composition comprising:
a) synthetic poly-alpha-olefin base fluid;
b) organomolybdenum friction modifiers;
c) an alkylphosphorothiolate and a hydrocarbylamine antiwear combination; And
d) Dihydrocarbyl dithiophosphate extreme pressure additive. The lubricant composition of claim 1 comprising a synthetic poly-alpha-olefin base fluid selected from the group consisting of about C ₈ to about C ₁₆ poly-alpha-olefins. The lubricant composition according to claim 1 or 2, comprising a synthetic poly-alpha-olefin base fluid selected from the group consisting of poly-1-octene, poly-1-decene, poly-1-dodecene and mixtures thereof. The organic molybdenum dithiocarbamate, organomolybdenum dithiophosphate, molybdenum carboxylate salt, molybdenum-amine complex, molybdenum amine / alcohol / amide complex, molybdenum cluster compound according to any one of claims 1 to 3 And a friction modifier selected from the group consisting of molybdenum disulfide. The lubricant composition according to any one of claims 1 to 4, comprising a friction modifier selected from the group consisting of organomolybdenum dithiocarbamate. The lubricant composition according to any one of claims 1 to 5, comprising an alkylphosphorothiolate of the formula:

Where,
R ₁ , R ₂ and R ₃ are each independently hydrocarbyl or hydrogen, and at least one of R ₁ , R ₂ and R ₃ is hydrocarbyl,
X ₁ , X ₂ and X ₃ are independently oxygen or sulfur; For example, each X ₁ , X ₂ and X ₃ is oxygen or sulfur, respectively, _{2 of} X ₁ , X ₂ and X ₃ are oxygen and the other is sulfur or _{2 of} X ₁ , X ₂ and X ₃ Is sulfur and the other is oxygen. The alkylene diamine according to claim 1, for example N-hydrocarbyl trimethylene diamine, for example N-oleyl-trimethylene diamine, N-tallow-trimethylene diamine. Or a hydrocarbylamine selected from the group consisting of N-coco-trimethylene diamine. The primary hydrocarbylamine, for example C ₄ -C ₃₀ alkylamine or C ₈ -C ₂₀ alkylamine, for example n-hexylamine, n- as claimed in claim 1. Lubricant comprising a hydrocarbylamine selected from the group consisting of octylamine, n-decylamine, n-dodecylamine, n-tetradecylamine, n-pentadecylamine, n-hexadecylamine, n-octadecylamine Composition. 9. The wt / wt ratio of alkylphosphorothiolate and hydrocarbylamine is about 1/9, about 1/8, about 1/7, about 1/6, about 10 1/5, about 1/4, about 1/3, about 1/2 or about 1/1 to about 2/1, about 3/1, about 4/1, about 5/1, about 6/1, about 7/1, about 8/1 or about 9/1 lubricant composition. The lubricant composition according to any one of claims 1 to 9 comprising dihydrocarbyl dithiophosphate of the formula:

Where,
R ₄ , R ₅ and R ₆ are each independently hydrocarbyl. The lubricant composition according to any one of claims 1 to 10 comprising dihydrocarbyl dithiophosphate of the formula:

Where,
R ₅ and R ₆ are independently C ₃ -C ₁₈ alkyl, C ₅ -C ₁₂ cycloalkyl, C ₉ -C ₁₀ bicycloalkylmethyl, C ₉ -C ₁₀ tricycloalkylmethyl, phenyl or C ₇ -C ₂₄ R ₅ and R _{6 which} are alkylphenyls or bonded together to an oxygen atom are

ego,
R ₇ is hydrogen or methyl, for example R ₅ and R ₆ are 2-methylpropyl and R ₇ is methyl. The method of claim 1, wherein about 9.0 mm ² / s, about 9.5, about 10.0, about 10.5, about 11.0, or about 11.5 mm ² / s to 100 ° C., measured according to ASTM D445. About 12.0 mm ² / s, about 12.5, about 13.0, about 13.5, about 14.0, about 14.5 or about 15.0 mm ² / s; For example, from about 10.0 mm ² / s to about 14.5 mm ² / s, from about 11.0 mm ² / s to about 13.5 mm ² / s or from about 11.5 mm ² / s to about 1100 mm ² at 100 ° C., measured according to ASTM D445 A lubricant composition having a kinematic viscosity of 12.5 mm ² / s. The synthetic base fluid of claim 62, wherein the synthetic base fluid is about 62 wt% (weight percent), about 63, about 64, about 65, about 66, about 67, based on the weight of the total composition. About 68, about 69, about 70, about 71, about 72, about 73, about 74, about 75 or about 76 wt% to about 77, about 78, about 79, about 80, about 81, about 82, about 83, A lubricant composition that is about 84, about 85, about 86, about 87 or about 88 wt%. 14. The method of any one of claims 1 to 13, wherein the organomolybdenum friction modifier is from about 0.2 wt% to about 1.0 wt% or from about 0.3 wt% to about 0.7, about 0.8 or about 0.9, based on the total weight of the composition. wt%; For example, about 0.40 wt%, about 0.41, about 0.42, about 0.43, about 0.44, about 0.45, about 0.46, about 0.47, about 0.48, about 0.49, about 0.50 or about 0.51 wt% to about 0.52, about 0.53, about 0.54, about 0.55, about 0.56, about 0.57, about 0.58, about 0.59 or about 0.60 wt% of the lubricant composition. The anti-wear combination of claim 1, wherein the anti-wear combination is about 0.2 wt% to about 1.0 wt% or about 0.3 wt% to about 0.7, about 0.8 or about 0.9, based on the total weight of the composition. wt%; For example, about 0.40 wt%, about 0.41, about 0.42, about 0.43, about 0.44, about 0.45, about 0.46, about 0.47, about 0.48, about 0.49, about 0.50 or about 0.51 wt% to about 0.52, about 0.53, about 0.54, about 0.55, about 0.56, about 0.57, about 0.58, about 0.59 or about 0.60 wt% of the lubricant composition. 16. The method according to any one of claims 1 to 15, wherein the dihydrocarbyl dithiophosphate extreme pressure additive is from about 0.2 to about 1.2 wt% or from about 0.3 wt% to about 0.8, about 0.9, based on the total weight of the composition. , About 1.0 or about 1.1 wt%; For example, about 0.50 wt%, about 0.51, about 0.52, about 0.53, about 0.54, about 0.55, about 0.56, about 0.57, about 0.58, about 0.59, about 0.60 or about 0.61 wt% to about 0.62, about 0.63, about 0.64, about 0.65, about 0.66, about 0.67, about 0.68, about 0.69 or about 0.70 wt% of the lubricant composition. 17. The lubricant composition according to any one of claims 1 to 16, comprising e) a copper corrosion inhibitor. 18. The composition of any one of claims 1 to 17, wherein, based on the total weight of the composition, about 0.10 wt% to about 0.60 wt% or about 0.10 wt% to about 0.40 or about 0.50 wt%; For example, about 0.10 wt%, about 0.11, about 0.12, about 0.13, about 0.14, about 0.15, about 0.16, about 0.17, about 0.18, about 0.19 or about 0.20 wt% to about 0.22, about 0.23, about 0.24, about A lubricant composition comprising 0.25, about 0.26, about 0.27, about 0.28, about 0.29 or about 0.30 wt% copper corrosion inhibitor. 19. The lubricant composition of any one of claims 1 to 18, comprising a copper corrosion inhibitor selected from the group consisting of thiazole, triazole and thiadiazole. The benzotriazole, tolyltriazole, octyltriazole, decyltriazole, dodecyltriazole, 2-mercapto benzothiazole, 2,5-dimer according to any one of claims 1 to 19. Capto-1,3,4-thiadiazole, 2-mercapto-5-hydrocarbylthio-1,3,4-thiadiazole, 2-mercapto-5-hydrocarbyldithio-1,3 , 4-thiadiazole, 2,5-bis (hydrocarbylthio) -1,3,4-thiadiazole and 2,5-bis (hydrocarbyldithio) -1,3,4-thiadia A lubricant composition comprising a copper corrosion inhibitor selected from the group consisting of sol. 21. The lubricant composition of any of claims 1-20, comprising f) an antifoaming agent. The method of any one of claims 1 to 21, wherein, based on the total weight of the composition, from about 0.10 wt% to about 1.20 wt% or from about 0.20 wt% to about 0.80, about 0.90, about 1.00 or about 1.10 wt%. ; For example about 0.50 wt%, about 0.51, about 0.52, about 0.53, about 0.54, about 0.55, about 0.56, about 0.57 or about 0.58 to about 0.59, about 0.60 wt% to about 0.61, about 0.62, about 0.63, about A lubricant composition comprising 0.64, about 0.65, about 0.66, about 0.67, about 0.68, about 0.69 or about 0.70 wt% of an antifoaming agent. 23. The method of any one of claims 1 to 22, selected from the group consisting of silicone oils, silicone resins, silicone glycols and mixtures thereof; A lubricant composition comprising an antifoaming agent selected from the group consisting of, for example, polyalkylsiloxanes, polyarylsiloxanes, polyalkoxysiloxanes, polyaryloxysiloxanes, fluorinated polysiloxanes and mixtures thereof. 24. The lubricant composition of any one of claims 1 to 23, comprising g) a solubilizer. 25. The composition of any one of the preceding claims, wherein, based on the total weight of the composition, about 0.10 wt% to about 9.0 wt% or about 2.0 wt% or about 3.0 wt% to about 7.0 or about 8.0 wt%; For example about 4.0 wt%, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9 or about 5.0 wt% to about 5.1, about 5.2, about 5.3, about A lubricant composition comprising 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9 or about 6.0 wt% solubilizer. The C ₄ -C ₁₄ or C ₆ -C ₁₀ α, ω-di-carboxylic acid of any one of claims 1 to 25, having a pour point of about -45 ° C or less, for example -55 ° C or less. A lubricant composition comprising a solubilizer selected from the group consisting of di-alkyl esters. The lubricant composition according to any one of claims 1 to 26, comprising a solubilizing agent selected from the group consisting of C ₈ -C ₁₃ alkanol adipates, azelates, sebacate and mixtures thereof. 28. Tri-methylpropyl tricaprylate, di-isodecyl glutarate, di-isododecyl glutarate, di-isooctyl adipate, di- ( 2-ethylhexyl) adipate, di-isononyl adipate, di-isodecyl adipate, di- (tridecyl) adipate, di-propylheptyl adipate, di-propyl adipate, di- (2-ethyl Hexyl) sebacate, di-isooctyl sebacate, di-octyl azelate, di-isooctyl azelate, di- (2-ethylhexyl) azelate, di-isooctyl dodecanediate and mixtures thereof A lubricant composition comprising a selected solubilizer. 29. The lubricant composition of any one of claims 1 to 28, comprising h) a polymeric viscosity index improver. 30. The composition of any one of claims 1 to 29, wherein, based on the total weight of the composition, about 0.10 wt% to about 9.0 wt% or about 2.0 wt% or about 3.0 wt% to about 7.0 or about 8.0 wt%; For example about 4.0 wt%, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9 or about 5.0 wt% to about 5.1, about 5.2, about 5.3, about A lubricant composition comprising 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9 or about 6.0 wt% of a polymeric viscosity index improver. The polyacrylate, polymethacrylate, vinylpyrrolidone / methacrylate copolymer, polyvinylpyrrolidone, polybutene, styrene / acrylate copolymer according to any one of claims 1 to 30, and A lubricant composition comprising a polymeric viscosity index improver selected from the group consisting of polyethers. 32. The lubricant composition of any one of the preceding claims, comprising i) an oligomeric viscosity modifier. 33. The composition of any one of claims 1 to 32, wherein, based on the total weight of the composition, about 1.0 wt% to about 9.0 wt% or about 2.0 wt% or about 3.0 wt% to about 7.0 or about 8.0 wt%; For example about 4.0 wt%, about 4.1, about 4.2, about 4.3, about 4.4, about 4.5, about 4.6, about 4.7, about 4.8, about 4.9 or about 5.0 wt% to about 5.1, about 5.2, about 5.3, about A lubricant composition comprising 5.4, about 5.5, about 5.6, about 5.7, about 5.8, about 5.9 or about 6.0 wt% of an oligomeric viscosity modifier. The oligomeric viscosity modifier according to any one of claims 1 to 33, selected from the group consisting of olefin co-oligomers, for example ethylene co-alpha-olefin oligomers, for example ethylene-propylene co-oligomers. Lubricant composition. 35. The solvent, hindered phenolic antioxidant, amine antioxidant, metal passivator, rust inhibitor, pour point depressant, dispersant, additional antifoaming agent, emulsifier, additional friction modifier, additional wear according to any one of claims 1 to 34. A lubricant composition comprising j) additional ingredients selected from the group consisting of anti-additives, detergents and mixtures thereof. 36. The composition of any one of claims 1 to 35, wherein, based on the total weight of the composition, about 0.1 wt% to about 21 wt%; For example, based on the total weight of the composition, about 0.5 wt%, about 1 wt%, about 2, about 3, about 4, about 5, about 6, about 7 or about 8 wt% to about 9, about 10, A lubricant composition comprising about 15, about 18, about 19, about 20 or about 21 wt% of additional ingredients. Lubricant composition comprising:
a) synthetic poly-alpha-olefin base fluid;
b) organomolybdenum friction modifiers;
c) a combination of alkylphosphorothiolate and hydrocarbylamine antiwear additives;
d) dihydrocarbyl dithiophosphate extreme pressure additive; And
e) copper corrosion inhibitors; And / or
f) antifoaming agents; And / or
g) solubilizer; And / or
h) polymeric viscosity index improvers; And / or
i) oligomeric viscosity modifiers; And / or
j) Additional ingredients. 35. The composition of claim 34, wherein, based on the weight of the total composition (total composition is 100%), a) from about 66.0 to about 84.0 wt%; 0.40 to about 0.60 wt% of b); C) from about 0.40 to about 0.60 wt%; And d) from about 0.50 to about 0.70; And / or about 0.10 to about 0.30 wt% of e); And / or about 0.50 to about 0.70 wt% of f); And / or about 4.0 to about 6.0 wt% of g); And / or about 4.0 to about 6.0 wt% h); And / or about 4.0 to about 6.0 wt% of i); And / or from about 0.1 wt% to about 21 wt% j). 39.The composition of claim 37 or 38 from the group consisting of solvents, hindered phenolic antioxidants, metal passivators, rust inhibitors, pour point depressants, dispersants, additional antifoaming agents, emulsifiers, additional friction modifiers, additional antiwear additives and mixtures thereof. A lubricant composition comprising selected additional ingredients. 39. The composition of any one of claims 37-39, wherein based on the total weight of the composition, about 0.1 wt% to about 21 wt%; For example, based on the total weight of the composition, about 1 wt%, about 2, about 3, about 4, about 5, about 6, about 7 or about 8 wt% to about 9, about 10, about 15, about 18 , About 19, about 20 or about 21 wt% of an additional component. A method of lubricating a surface in a synchronizer of a transmission, comprising supplying the lubricant composition according to any one of claims 1 to 40 to the synchronizer of the transmission. 42. The method of claim 41, wherein the synchronizer comprises a surface selected from the group consisting of molybdenum, bronze, brass, iron, carbon and steel. A transmission comprising the lubricant composition according to claim 1. A gear box comprising the lubricant composition according to claim 1. A vehicle comprising the lubricant composition according to claim 1. A vehicle comprising a transmission comprising the lubricant composition according to claim 1.