MX2015004550A

MX2015004550A - Lubricant compositions comprising boroxines to improve fluoropolymer seal compatibility.

Info

Publication number: MX2015004550A
Application number: MX2015004550A
Authority: MX
Inventors: Kevin J Desantis; Roger L Kuhlman; Michael D Hoey; Alex Attlesey; David Chasan; Phil Rabbat
Original assignee: Basf Se
Priority date: 2012-10-12
Filing date: 2013-10-11
Publication date: 2015-07-17
Also published as: JP2015531428A; AU2013329021A1; RU2015117542A; US20140106997A1; WO2014059277A1; JP5882548B2; US20150344806A1; ZA201503231B; JP2016135872A; BR112015008110A2; WO2014059270A1; CN104812878A; CN104822810A; MX2015004548A; US20140106996A1; RU2015117543A; CA2894186A1; KR20150060996A; BR112015008109A2; JP2015531429A

Abstract

A lubricant composition including a boroxine compound is disclosed. A lubricant composition and additive package including a boroxine compound and a sterically hindered amine compound are also disclosed. The boroxine compound of the lubricant composition acts to improve compatibility of the lubricant composition with a fluoropolymer seal.

Description

LUBRICANT COMPOSITIONS COMPRISING BOROXINS FOR IMPROVE THE COMPATIBILITY OF FLUOROPOLYMER STAMPS FIELD OF THE INVENTION

[0001] The present invention generally relates to a lubricant composition that includes a base oil, a boroxine compound, and a sterically hindered amine compound. The invention also relates to a package of additives for a lubricant composition.

BACKGROUND OF THE INVENTION

[0002] It is known and customary to add stabilizers to lubricating compositions based on mineral or synthetic oils to improve their performance characteristics. Some conventional amine compounds are effective stabilizers for lubricants. These conventional amine compounds can help neutralize acids formed during the combustion process. However, these conventional amine compounds are generally not used in combustion engines because of their detrimental effects on fluoropolymer seals.

[0003] It is an object of the present invention to provide new types of lubricating compositions having improved fluoropolymer seal compatibility.

COMPENDIUM OF THE INVENTION

[0004] The present invention provides a lubricant composition that includes a base oil, a boroxine compound, and a sterically hindered amine compound. The boroxine compound has the general formula (I): wherein each R1 is independently an alkyl group having from 1 to 7 carbon atoms.

[0005] The present invention provides a lubricant composition that includes a base oil, a boroxine compound, and a sterically hindered amine compound. The boroxine compound has the general formula (I): wherein each R1 is independently an alkyl group having from 1 to 7 carbon atoms.

[0006] The present invention is also directed to a lubricant composition that includes the base oil, the boroxine compound, and the sterically hindered amine compound having the general formula (II) or (III): : wherein each R is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms, and wherein at least two groups designated by R 2 are an alkyl group; wherein each R3 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms; wherein each R4 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms, and wherein at least two groups designated by R4 are alkyl group; wherein each R5 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms, and wherein the hydrocarbyl groups designated by R2, R3, R4, and R5 are each independently an alcohol group, a group alkyl, an amide group, an ether group or a ester group.

[0007] The present invention also provides a package of additives for a lubricant composition that includes the boroxine compound and the sterically hindered amine compound.

[0008] Lubricating compositions including the boroxine compound demonstrate improved compatibility with fluoropolymer seals as demonstrated by CEC L-39-T96.

DETAILED DESCRIPTION OF THE INVENTION

[0009] As described in the following, a boroxine compound can be included in a lubricant composition or an additive package with a lubricant composition to improve seal compatibility of the lubricant composition. The boroxine seal can be combined in the lubricant composition with one or more sterically hindered amine compounds. It is believed that, when presented in a lubricant composition with the sterically hindered amine compound, the boroxine compound interacts with these sterically hindered amine compounds to interfere with the tendency of the sterically hindered amine compound to interact negatively with a rubber stamp. fluoropolymer as the lubricant composition contacts the fluoropolymer seal, without affecting the stabilization effect of the amine compound spherically prevented.

[0010] The boroxine compound has the general formula (I): , In the general formula (I), each R1 is independently an alkyl group having equal to or less than 7 carbon atoms. For example, each R1 can independently be an alkyl group having from 1 to 7, 1 to 6, 1 to 5, 1 to 4, 1 to 3, or 1 to 2, carbon atoms. Each R1 can be independently linear or branched. In a specific formulation, each R1 can be a methyl group. Exemplary R1 groups may independently include methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, tert-butyl, and n-hexyl groups.

[0011] The boroxine compound can be exemplified by trimethoxy boroxine, tripropoxy boroxine, triisopropoxy boroxine, tributoxy boroxine, tripentoxy boroxine, trihexoxy boroxine, and triheptoxy-boroxine. By way of example, trimethoxy boroxine has the formula:

[0012] In certain embodiments, each R1 may represent different alkyl groups. For example, the boroxine compound can be exemplified by the formula: where a group designated by R1 in formula (I) is methyl, a group designated by R1 in formula (I) is ethyl, and a group designated by R1 in formula (I) is propyl. Alternatively still, the groups designated by R1 may be the same, and a group designated by R1 may be different in formula (I).

[0013] The boroxine compound can be included in the lubricant composition and / or the additive package in an amount sufficient to provide a desired concentration of boron in the lubricant composition and / or the additive package. For example, the boroxine compound may be included in an amount sufficient to provide from 1 to 5000 ppm of boron in the lubricant composition based on the total weight of the lubricant composition. Alternatively, the boroxine compound may be included in an amount in the lubricant composition or additive package sufficient to provide from 100 to 5000, 300 to 3000, 500 to 1500, or 700 to 1200, ppm boron, in the lubricant composition based on the total weight of the lubricant composition. Alternatively still, the boroxine compound may be provided in an amount sufficient to provide from 1 to 100, 1 to 40, 1 to 20, or 10 to 20, ppm of boron, in the lubricant composition based on the total weight of the composition of lubricant.

[0014] Alternatively, the boroxine compound may be present in the lubricant composition in an amount ranging from 0.1 to 10, 0.1 to 5, 0.1 to 1, 0.3 to 0.7, 0.5 to 3, or 0.5 to 1.5,% in weight, based on the total weight of the lubricant composition. In other embodiments, the boroxine compound is included in an amount greater than 1% by weight, but less than 5% by weight, based on the total weight of the lubricant composition. The mixtures of different boroxine compounds can also be used in combination with the lubricant composition or the additive package.

[0015] If formulated as the additive package, the boroxine compound may be present in an amount ranging from 0.1 to 75% by weight based on the total weight of the additive package. The boroxine compound may also be present in the additive package, in an amount ranging from 0.1 to 50, 0.1 to 33, or 0.1 to 25% by weight, based on the total weight of the additive package.

[0016] The boroxine compound can be prepared by numerous methods. As an example, the boroxine compound can be prepared by reacting 2 moles of orthoboric acid (H3B03) with 1 mole of tri-alkyl borate. The alkyl borate may have from 1 to 7 carbon atoms, depending on the number of carbon atoms desired in the groups designated by R 1 in the general formula (I). The reaction can be conducted at a temperature ranging from 50 to 150 ° C to remove 1 mole of H2O.

[0017] Conventional uses of conventional boron compounds involve forming a reaction product between a conventional amine compound and a conventional boron compound. The conventional boron compound can be exemplified by reactive borate esters and boric acids. In these applications, the conventional boron compound is consumed by chemical reactions in such a way that the finally formed lubricant composition does not contain appreciable amounts of the conventional boron compound. In addition, in these applications, the conventional amine compound is reacted with the conventional boron compound to form a salt. The formation of salt it is evident from the electronic impact with the reaction of the conventional boron compound and the conventional amine compound, which is visible as a chemical change in NMR spectroscopy. There are also physical indications that a reaction is carried out, such as the evolution of heat and the thickening of the solution (crosslinking).

[0018] In such applications of conventional boron compounds, more than 50% by weight of the conventional boron compound is typically reacted with conventional amine compounds, or hydrolyzed, based on the total weight of the conventional boron compound before of the reaction. In contrast, inventive lubricant compositions, additive packages, and inventive methods can contain a significant amount of the boron compound in an unreacted state. In addition, the inventive lubricant compositions, the inventive additive packages, and the inventive methods do not involve the formation of a substantial amount of a salt of the boroxine compound. As such, the lubricant composition can be free of a salt formed through the reaction of the boroxine compound, or it can contain less than 10, less than 5, or less than 1% by weight, of the salt formed through the reaction of the boroxine compound based on the total weight of the lubricant composition after any reaction.

[0019] In certain modalities, at least 50, at minus 60, at least 70, at least 80, or at least 90% by weight, of the boroxine compound remains unreacted in the lubricant composition based on the total weight of the boroxine compound used to form the lubricant composition before any reaction in the lubricant composition. Alternatively, at least 95, at least 96, at least 97, at least 98, or at least 99% by weight, of the boroxine compound remains unreacted in the lubricant composition based on a total weight of the boroxine compound before any reaction in the lubricant composition.

[0020] The term "unreacted" refers to the fact that the designated amount of the boroxine compound does not react with any component in the lubricant composition, such as the conventional amine compound or water. Accordingly, the unreacted amount of the boroxine compound remains in its virgin state when it is present in the lubricant composition before the lubricant composition has been used in an end use application, such as the internal combustion engine.

[0021] The phrase "before any reaction in the lubricant composition" refers to the base of the amount of the boroxine compound in the lubricant composition. This description does not require that the boroxine compound react with other components in the lubricant composition, ie, 100% by weight of the boroxine compound it can remain unreacted in the lubricant composition based on the total weight of the boroxine compound before any reaction in the lubricant composition.

[0022] In one embodiment, the percentage of the boroxine compound remaining unreacted is determined after all the components which are present in the lubricant composition reach equilibrium with each other. The period of time necessary to achieve equilibrium in the lubricant composition can vary widely. For example, the amount of time needed to reach equilibrium can vary from a single minute to many days, or even weeks. In certain embodiments, the percentage of the boroxine compound remaining unreacted in the lubricant composition is determined after 1 minute, 1 hour, 5 hours, 12 hours, 1 day, 2 days, 3 days, 1 week, 1 month, 6 months, or 1 year.

Generally, the percentage of the boroxine compound that remains unreacted in the lubricant composition is determined before a final use.

[0023] In certain embodiments, the lubricant composition includes less than 0.1, less than 0.01, less than 0.001, or less than 0.0001% by weight, of the compound which can react with the boroxine compound based on the total weight of the composition. lubricant composition. In certain embodiments, the lubricant composition may include a collective amount of acids, anhydrides, triazoles, and / or oxides which is less than 0.1% by weight, of the total weight of the lubricant composition. Alternatively, the lubricant composition may include a collective amount of acids, anhydrides, triazoles, and / or oxides which is less than 0.01, less than 0.001, or less than 0.0001% by weight, based on the total weight of the composition of lubricant. Alternatively still, the lubricating compositions may be free of acids, anhydrides, triazoles, and / or oxides.

[0024] The term "acids" includes both traditional acids and Lewis acids. For example, the acids include carboxylic acids, such as lactic acid and hydrazyl acid; succinic alkylated acids; alkylaromatic sulphonic acids; and fatty acids. Exemplary Lewis acids include alkyl aluminates; alkyl titanates; molybdenumates, such as molybdenum thiocarbamates and molybdenum carbamates; and molybdenum sulfides.

[0025] "Anhydrides" are exemplified by alkylated succinic anhydrides and acrylates. The triazoles can be used for benzotriazoles and derivatives thereof; tolutriazole and derivatives thereof; 2-mercaptobenzothiazole, 2,5-dimercaptothiadiazole, 4,4'-methylene-bis-benzotriazole, 4,5,6,7-tetrahydro-benzotriazole, and salts thereof. The oxides can be exemplified by alkylene oxides, such as ethylene oxide and propylene oxide; metal oxides; alkoxylated alcohols; or alkoxylated esters.

[0026] The lubricant composition may include less than 100, less than 50, less than 10, or less than 5, ppm of B (OH) 3 ~ ions, based on the total weight of the lubricant composition. Conventional boroxine compounds can be hydrolyzed before they are combined with a conventional lubricant composition such that more than 100 ppm of B (OH) 3 ions are present in the conventional lubricant composition. In such a hydrolyzed state, the invention of the subject application surprisingly realizes that the resulting conventional boroxide compounds do not provide the desired effect on seal compatibility. In other words, at least 50, at least 60, at least 70, at least 80, at least 90, at least 95, or at least 99% by weight, of the boroxine compound is in a non-hydrolyzed state in the composition of lubricant based on the total weight of the boroxine compound. The amount of the boroxine compound which is hydrolyzed is explained when determining the amount of boroxine compound which remains unreacted.

[0027] In addition, the boroxine compound does not adversely affect the total base number (TBN) of the lubricant composition. The TBN value of the lubricant composition can be determined in accordance with ASTM D2896 and ASTM D4739 as will be described in the following.

[0028] As described above, the boroxine compound can be combined with at least one amine-hindered amine compound. It should be appreciated that mixtures of different sterically hindered amine compounds can also be combined with the boroxine compound. If included, the lubricant composition includes the sterically hindered amine compound in an amount ranging from 0.1 to 25, 0.1 to 20, 0.1 to 15, or 0.1 to 10% by weight, based on the total weight of the composition of the composition. lubricant. Alternatively, the lubricant composition may comprise the sterically hindered amine compound in an amount ranging from 0.5 to 5.1 to 1.3 to 2% by weight, based on the total weight of the lubricant composition.

[0029] The sterically hindered amine compound does not substantially react with the boroxine compound to form a salt. The absence of salt formation is made evident by the lack of chemical change in the NMR spectrum of the boroxine compound and the sterically hindered amine compound when combined in the lubricant composition and / or the additive package. In other words, at least 50, 60, 70, 80, 90, 95, or 99% by weight, of the enteric-hindered amine compound remains unreacted after the lubricant composition and / or the additives reach equilibrium.

[0030] The basicity of the sterically hindered amine compound can be determined by acid titration. The resulting neutralization number is expressed as the TBN, and can be measured using various methods. ASTM D4739 is a titration of potentiometric hydrochloric acid. The ASTM D4739 method is favored in engine tests and with oils used to measure TBN depletion / retention. When the engine lubricant test is used, it must be recognized certain weak bases are the result of the service rather having been built into the oil. This test method can be used to indicate relative changes occur in the lubricant composition during use under oxidation or other conditions of service regardless of the color or other properties of the resulting lubricant composition.

[0031] The sterically hindered amine compound can have a TBN value of at least 70 mg KOH / g when tested in accordance with ASTM D4739. Alternatively, the sterically hindered amine compound can have a TBN value of at least 80, at least 90, at least 100, at least 110, at least 120, at least 130, at least 140, at least 150, or at least 160 mg KOH / g, when tested in accordance with ASTM D4739.

[0032] If the amine compound is sterically For the purpose of this invention, the additive package is included in the additive package, the additive package includes the sterically hindered amine compound in an amount ranging from 0.1 to 50% by weight based on the total weight of the additive package. Alternatively, the additive package can comprise the sterically hindered amine compound in 1 to 25, 0.1 to 15, 1 to 10, 0.1 to 8, or 1 to 5% by weight, based on the total weight of the additive package. Combinations of various sterically hindered amine compounds are also contemplated.

[0033] In some embodiments, the sterically hindered amine compound includes at least one nitrogen atom. In other embodiments, the sterically hindered amine compound does not include triazoles, triazines or similar compounds where there are three or more nitrogens in the body of a cyclic ring.

[0034] In some embodiments, the sterically hindered amine compound may consist of, or consist essentially of, hydrogen, carbon, nitrogen, and oxygen. Alternatively, the sterically hindered amine compound may consist of, or consist essentially of, hydrogen, carbon, and nitrogen. In the context of the sterically hindered amine compound, the phrase "consists essentially of" refers to compounds where at least 95 mol% of the sterically hindered amine compound are the named atoms (ie, hydrogen, carbon, nitrogen, and oxygen; or hydrogen, carbon, and nitrogen). For example, if the sterically hindered amine compound consists essentially of hydrogen, carbon, nitrogen, and oxygen, at least 95 mole% of the sterically hindered amine compound is hydrogen, carbon, nitrogen, and oxygen. In certain configurations, at least 96, at least 97, at least 98, at least 99 or at least 99.9 mole%, of the sterically hindered amine compound are hydrogen, carbon, nitrogen and oxygen, or, in other embodiments, are carbon , nitrogen, and hydrogen.

[0035] The sterically hindered amine compound may consist of covalent bonds. The phrase "consists of covalent bonds" is intended to exclude those compounds which bind the sterically hindered amine compound through an ionic association with one or more ionic atoms or compounds. is, in configurations where the sterically hindered amine compound consists of covalent bonds, the sterically hindered amine compound includes salts of sterically hindered amine compounds, such as amine phosphate salts and amine salts. As in certain embodiments, the lubricant composition is free of a salt of the sterically hindered amine compound. More specifically, the lubricant composition can be free of amine phosphate salt, amine salt and / or amine salt sulfate

[0036] In other embodiments, the spherically hindered amine compound may have a weight average molecular weight ranging from 100 to 1200. Alternatively, the spherically hindered amine compound may have a weight average molecular weight ranging from 200 to 800. , or from 200 to 600. Alternatively still, the spherically hindered amine compound may have a weight average molecular weight of less than 500.

[0037] As used herein, the term "spherically hindered amine compound" means an organic molecule having less than two hydrogen atoms bonded to at least one alpha carbon with reference to a secondary or tertiary nitrogen atom. In other embodiments, the term "spherically hindered amine compound" means an organic compound that has no hydrogen atoms bonded to at least one alphacarbon with reference to a secondary or tertiary nitrogen atom. In still other embodiments, the term "spherically hindered amine compound" means an organic molecule that does not have hydrogen atoms bonded to each of at least two alpha-carbons with reference to a secondary or tertiary nitrogen atom.

[0038] The spherically hindered amine compound may have the general formula (II) or (III): In the general formula (II), each R2 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms, wherein at least two of R2 are an alkyl group in a molecule; and R3 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms. In the general formula (III), each R4 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms, wherein at least two of R4 are an alkyl group, and each R5 is independently a carbon atom. hydrogen or a hydrocarbyl group having from 1 to 17 carbon atoms.

[0039] Each of R2, R3, R4, and R5 can independently be an alcohol group, an alkyl group, an amide group, an ether group, or an ester group. Each of R2, R3 R4, and R5 can independently have from 1 to 17, 1 to 15, 1 to 12, 1 to 8, 1 to 6, or 1 to 4, carbon atoms. Each group designated by R2, R3, R4, and R5 can independently be straight or branched. For example, each of R2, R3, R4, and R5 may have an alcohol group, amino group, alkyl group, amide group, ether group, or ester group having from 1 to 17 carbon atoms, with the functional group designated (alcohol, etc.) linked in different positions in the carbon chain.

[0040] In certain embodiments, at least one group designated by R2, R3, R4, and R5 is not substituted. Alternatively, at least two, three, four, five or six groups designated by R2, R3, R4, and R5 are unsubstituted. By "unsubstituted", it is intended that the designated group be free of pending functional groups, such as hydroxyl, carboxyl, oxide, thio and thiol groups, and that the designated group is free of acylated heteroatoms, such as oxygen heteroatoms. , sulfur and nitrogen. In other embodiments, each group designated by R2, R3, R4, and R5 is unsubstituted. Alternatively still, it is contemplated that one two, three, four, five or six groups designated by R2, R3, R4, and R5 are substituted. The term "substituted" indicates that the designated group includes at least one pending functional group, or that the designated group includes at least one acyclic heteroatom.

[0041] Exemplary R2, R3 R4, and R5 groups can be independently selected from methyl, ethyl, n-propyl, n-butyl, sec-butyl, tert-butyl, n-hexyl, n-octyl, 2- ethylhexyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-hexadecyl, or n-octadecyl.

[0042] In the general formula (II), at least two, at least three, or the four groups, designated by R2 are independently an alkyl group. Similarly, in the general formula (III), at least two groups designated by R 4 are an alkyl group. Alternatively, at least three, or the four groups designated by R 4 are an alkyl group.

[0043] The sterically hindered amine compound of the general formula (II) can be exemplified by the following compounds: 2,2,6,6-tetramethyl-4-octylpiperidine: 2,2,6,6-tetramethyl-4-decylpiperidine: 2,2,6,6-tetramethyl-4-butylpiperidine: 2,2,6,6-tetramethyl-4-hexadecylpiperidine:

[0044] The sterically hindered amine compound of the general formula (III) is acielic: The term "acyclic" is intended to mean that the sterically hindered amine compound of the general formula (III) is free of any cyclic structures and aromatic structures. The sterically hindered amine compound of the general formula (III) can be exemplified by: N-tert-butyl-2-ethyl-N-methyl-hexan-1-amine: -. . ter-amyl-tert-butylamine: I -; N-tert-butylheptan-2-amine: : :

[0045] The sterically hindered amine compound can alternatively be exemplified further by the general formula (IV): l In the general formula (IV), each R2 and R3 are as described above, wherein at least three of R2 are independently an alkyl group. The sterically hindered amine compound of the general formula (IV) can exemplified by the following compounds: (1,2,2,6,6-pentamethyl-4-piperidyl) octanoate: s · _ . (1,2,2,6,6-pentmethyl-4-piperidyl) decanoate: ' 1,2,2,6,6-pentamethyl-4-piperidyl) dodecanoate (2,2,6,6-tetramethyl-4-piperidyl) dodecanoate . i

[0046] The sterically hindered amine compound may include a simple ester group. However, the sterically hindered amine compound may alternatively be free of ester groups. In certain embodiments, the sterically hindered amine compound may include at least one, or only one, of the piperidine ring.

[0047] The boroxine compound and the sterically hindered amine compound can be provided in an amount such that 1 part of the boron is provided for each 1 to 20 parts of nitrogen in the sterically hindered amine compound within the lubricant composition. Alternatively, the boroxin compound and the sterically hindered amine compound may be provided in an amount such that 1 part of the boron is provided for each 1 to 15, 1 to 10, or 1 to 5 parts of nitrogen in the amine compound. sterically hindered within the lubricant composition.

[0048] In yet another embodiment, the composition of The lubricant may consist, or consist essentially of, a base oil, the boroxine compound, and the sterically hindered amine compound. It is also contemplated that the lubricant composition may consist of, or consist essentially of, the base oil, the boroxine compound, and the sterically hindered amine compound, in addition to one or more additives that do not materially affect the functionality or performance of the boroxina. For example, compounds that materially affect the overall performance of the lubricant composition can include compounds that negatively impact TBN reinforcement, lubricity, fluoropolymer seal compatibility, corrosion inhibition, or acidity of the lubricant composition. .

[0049] In other embodiments, the additive package may consist, or consist essentially of, the boroxine compound, and the sterically hindered amine compound. It is also contemplated that the additive package may consist of, or consist essentially of, the boroxin compound, and the sterically hindered amine compound, in addition to one or more additives that do not comprise the functionality or performance of the boroxine compound. When used in reference to the additive package, the term "consisting essentially of" describes the additive package that is free of compounds that materially affect the overall performance of the lubricant composition. By example, compounds that materially affect the overall performance of the additive package may include compounds that negatively impact TBN reinforcement, lubricity, fluoropolymer seal compatibility, corrosion inhibition, or acidity of the additive package.

[0050] In some aspects, the lubricant composition includes a base oil. The base oil is classified according to the Base Oil Interchangeability Guidelines of the American Petroleum Institute (API). In other words, the base oil can be further described as one or more of the five types of base oils: Group I (sulfur content> 0.03% by weight, and / or <90% by weight, saturated, viscosity index) 80-119); Group II (sulfur content less than or equal to 0.03% by weight, and more than or equal to 90% by weight, saturated, viscosity index 80-119); Group III (sulfur content less than or equal to 0.03% by weight, and more than or equal to 90% by weight, saturated, viscosity index more than or equal to 119); Group IV (all polyalphaolefins (PAO)); and Group V (all others not included in Groups I, II, III, or IV).

[0051] The base oil is selected from the group of API Group base oils; base oils of Group II API; base oils of Group III API; base oils of Group IV API; base oils of Group V API; and combinations thereof. In a specific formulation, the base oil includes base oils of Group II API.

[0052] The base oil may have a viscosity ranging from 1 to 20 cSt when tested in accordance with ASTM D445 at 100 ° C. Alternatively, the viscosity of the base oil can vary from 3 to 17, or from 5 to 14, cSt, when tested in accordance with ASTM D445 at 100 ° C.

[0053] The base oil can be further defined as crankcase lubrication oil for spark ignition and compression ignition internal combustion engines, which includes automobile and truck engines, two-cycle engines, aviation piston engines, marine, and rail diesel engines. Alternatively, the base oil can be further defined as an oil for use in gas engines, diesel engines, stationary energy engines, and turbines. The base oil can also be defined as light heavy duty motor oil.

[0054] In still other embodiments, the base oil can be further defined as a synthetic oil that includes one or more alkylene oxide polymers and interpolymers, and derivatives thereof. The terminal hydroxyl groups of the alkylene oxide polymers can be modified by esterification, etherification, or similar reactions. These synthetic oils can be prepared through the polymerization of ethylene oxide or propylene oxide to forming polyoxyalkylene polymers which can be further reacted to form the synthetic oil. For example, alkyl and aryl ethers of these polyoxyalkylene polymers can be used. For example, methyl polyisopropylene glycol ether having an average molecular weight of 1000; polyethylene glycol diphenyl ether having a molecular weight of 500-1000; or polypropylene glycol diethyl ether having a molecular weight of 1000-1500 and / or mono- and polycarboxylic esters thereof, such as acetic acid esters, mixed C3-C8 fatty acid esters, and C13 oxo acid diesters of tetraethylene glycol They can also be used as the base oil.

[0055] In one embodiment, one or more of the components described herein are mixed in the additive package that is subsequently mixed in the base oil to make the lubricant composition. The additive package can be formulated to provide the desired concentration in the lubricant composition when the concentrate is combined with a predetermined amount of base oil. It will be appreciated that the majority of the references to the lubricant composition throughout this description also apply to the description of the additive package. For example, it will be appreciated that the additive package may include, or exclude, the same components as the composition of lubricant, although in different amounts.

[0056] The base oil may be present in the lubricant composition in an amount ranging from 50 to 99.9, 60 to 99.9, 70 to 99.9, 80 to 99.9, 90 to 99.9, 75 to 95, 80 to 90, or 85 to 95,% by weight, based on the total weight of the lubricant composition. Alternatively, the base oil may be present in the lubricant composition in amounts of more than 50, 60, 70, 75, 80, 85, 90, 95, 98, or 99,% by weight, based on the total weight of the lubricant composition. In various embodiments, the amount of the base oil in a fully formulated lubricant composition (including diluent or carrier oil present) ranges from 50 to 99, 60 to 90, 80 to 99.5, 85 to 96, or 90 to 95% by weight , based on the total weight of the lubricant composition. In various embodiments, the amount of base oil in a package of additives, if included, (including diluent or carrier oils present) ranges from 0.1 to 50, 1 to 25, or 15% by weight, based on the total weight of the additive package.

[0057] In one or more embodiments, the lubricant composition can be classified as a low lubricant in SAPS having a sulfated ash content of not more than 3, 2, 1, or 0.5% by weight, based on the total weight of the lubricant. the composition of lubricant. The term "SAPS" refers to sulphated ash, phosphorus and sulfur.

[0058] The lubricant composition can have a TBN value of at least 1 mg KOH / g of the lubricant composition. Alternatively, the lubricant composition has a TBN value ranging from 1 to 15, 5 to 15, or 9 to 12, mg KOH / g of the lubricant composition, when tested in accordance with ASTM D2896.

[0059] The lubricant composition or the additive package may further include a dispersant in addition to the boroxine compound and / or the sterically hindered amine compound. The dispersant can be a polyalkene amine. The polyalkene amine includes a portion of polyalkene. The polyalkene portion is the polymerization product of identical or different linear or branched C2-6 olefin monomers. Examples of suitable olefin monomers are ethylene, propylene, 1-butene, isobutene, 1-pentene, 2-methyl butene, 1-hexene, 2-methylpentene, 3-methylpentene, and 4-methylpentene. The polyalkene portion has a weight average molecular weight that ranges from 200 to 10,000, 500 to 10,000, or 800 to 5,000.

[0060] In one embodiment, the polyalkene amine is derived from polyisobutenes. Particularly suitable polyisobutenes are known as "highly reactive" polyisobutenes which characterize a high content of terminal double bonds. The terminal double bonds are alpha-olefinic double bonds of the type shown in the formula general (V): polymer The links shown in the general formulas (V) are shown as vinylidene double bonds. Suitable highly reactive poly-polyisobutenes, for example, are polyisobutenes which have a vinylidene double bond fraction of more than 70, 80, 85 mole%. Preference is given in particular to polyisobutenes which have uniform polymer infrastructures. The uniform polymer infrastructures have in particular those polyisobutenes which are composed of at least 85, 90 or 95% by weight of isobutene units. Such highly reactive polyisobutenes preferably have a number-average molecular weight in the aforementioned range. In addition, highly reactive polyisobutenes can have a polydispersity ranging from 1.05 to 7, or 1.1 to 2.5. The highly reactive polyisobutenes may have a polydispersity of less than 1.9, or less than 1.5. Polydispersity refers to the weight average molecular weight ratios Mw divided by the number average molecular weight Mn.

[0061] The amine dispersant may include portions derived from succinic anhydride and having hydroxyl and / or amino and / or amido and / or imido groups. For example, the dispersant can be derived from polyisobutenyl succinic anhydride which can be obtained by reacting conventional polyisobutene 0 highly reactive having a weight average molecular weight ranging from 500 to 5000 with maleic anhydride by a thermal route or by chlorinated polyisobutene. In a specific embodiment, derivatives with aliphatic polyamines such as ethylenediamine, diethylenetriamine, triethylenetetramine or tetraethylenepentamine can be used.

[0062] To prepare the polyalkene amine, the polyalkene component can be aminated in a known manner. An exemplary process proceeds by the preparation of an oxo intermediate compound by subsequent hydroformylation and reductive amination in the presence of a suitable nitrogen compound.

[0063] The dispersant can be a poly (oxyalkyl) radical or a polyalkylene polyamine radical of the general formula (VI): R6-NH- (CI-C6 alkylene-NH) m-alkylene Ci-C6 alkylene (SAW) where m is an integer ranging from 1 to 5, R6 is a hydrogen atom or a hydrocarbyl group having 1 to 6 carbon atoms with C1-C6 alkylene representing the corresponding bridged analogs of the alkyl radicals. The dispersant can also be a polyalkylene imine radical composed of from 1 to 10 alkylene imine groups of? 1-? 4; or, together with the nitrogen atom to which they are attached, are an optionally substituted 5- to 7-membered heterocyclic ring which is optionally substituted by one to three C 1 -C 4 alkyl radicals and optionally supports additional ring heteroatom such as oxygen or nitrogen.

[0064] Examples of suitable alkenyl radicals include mono- or polyunsaturated, preferably mono- or di-unsaturated analogs of alkyl radicals having from 2 to 18 carbon atoms, in which the double bonds can be at any position in the hydrocarbon chain.

[0065] Examples of cycloalkyl radical of C4-Ci8 include cyclobutyl, cyclopentyl and cyclohexyl, and also analogs thereof substituted by 1 to 3 alkyl radicals of Ci-C4. C 1 -C 4 alkyl radicals, for example, are selected from methyl, ethyl, iso- or n-propyl, n-, iso-, sec- or tert-butyl.

[0066] Examples of arylalkyl radical include an Ci-Cig alkyl group and an aryl group which is derived from a monocyclic or bicyclic aromatic or heteroaromatic group fused or unfused from 4 to 7 members, in particular 6 members, such as phenyl, pyridyl, naphthyl and biphenyl.

[0067] If additional dispersants other than the dispersant described above are employed, these dispersants can be of various types. Suitable examples of dispersants include polybutenyl succinic amides or imides, polybutenylphosphonic acid derivatives and basic magnesium, calcium and barium sulfonates and phenolates, succinate esters and alkylphenol amines (Mannich bases), and combinations thereof.

[0068] If used, the dispersant can be used in various amounts. The dispersant typically occurs in the lubricant composition in an amount ranging from 0.01 to 15, 0.1 to 12, 0.5 to 10, or 1 to 8% by weight, based on the total weight of the lubricant composition. Alternatively, the dispersant may be present in amounts of less than 15, less than 12, less than 10, less than 5 or less than 1% by weight, each based on the total weight of the lubricant composition.

[0069] In the additive package, the total weight of the dispersant and the boroxine compound can be less than 50, less than 45, less than 40, less than 35, or less than 30% by weight, of the additive based pack in the total weight of the additive package. Surprisingly, it has been found that if the combined concentration of the dispersant and the boroxine compound is too high in the additive package, a reaction between the dispersant and the dispersant will be carried out. boroxine compound which causes thickening and formation of a precipitate, together with a decrease in the fluoropolymer seal compatibility of the lubricant composition.

[0070] The lubricant composition or the additive package may further comprise a dihydrocarbyldithiophosphate salt. The dihydrocarbyldithiophosphate salt can be represented by the following general formula: [R70 (R80) PS (S)] 2M, wherein R7 and R8 are each hydrocarbyl groups having from 1 to 20 carbon atoms, wherein M is a metal atom or an ammonium group. For example, R7 and R8 each may independently be Ci-2 alkyl groups or C2-20 alkenyl groups, C3-20 cycloalkyl groups, C1-20 aralkyl groups or C3-20 aryl groups · The groups designated by R7 and R8 can be substituted without replacing. The metal atom can be selected from the group including aluminum, lead, tin, manganese, cobalt, nickel or zinc. The ammonium group can be derived from ammonia or a primary or secondary or tertiary mine. The ammonium group can be of the formula R9R10R11R12N +, wherein R9, R10, R11, and R12 each independently represents a hydrogen atom or a hydrocarbyl group having from 1 to 150 carbon atoms. In certain embodiments, R9, R10, R11, and R12 may each independently be hydrocarbyl groups having from 4 to 30 carbon atoms, in a specific embodiment, the dihydrocarbyldithiophosphate salt is zinc dialkyl dithiophosphate.

[0071] The dihydrocarbyldithiophosphate salt may be present in the lubricant composition in an amount ranging from 0.1 to 20, 0.5 to 15, 1 to 10, 0.1 to 5, 0. 1 to 1, 0.1 to 0.5, or 0.1 to 1.5% by weight, based on the total weight of the lubricant composition. Alternatively, the dihydrocarbyldithiophosphate salt may be present in amounts of less than 20, less than 10, less than 5, less than 1, less than 0.5, or less than 0.1% by weight, based on the total weight of the lubricant composition. The additive package can also include the dihydrocarbyldithiophosphate salt in an amount ranging from 0.1 to 20, 0.5 to 15, 1 to 10, 0.1 to 5, 0.1 to 1, 0.1 to 0.5, or 0.1 to 1.5% by weight, each one based on the total weight of the additive package.

[0072] The lubricant composition or the additive package may additionally include one or more additives to improve various chemical and / or physical properties of the lubricant composition. These additives may be in addition to the boroxine compound or in addition to the combination of the boroxine compound and the sterically hindered amine compound. Specific examples of one or more additives include anti-wear additives, antioxidants, metal shunts (or passivators), corrosion inhibitors, viscosity index improvers, pour point depressants, dispersants, detergents, and antifriction additives. Each of the additives can be used alone or in combination. One or more additives may be used in various amounts, if employed. The lubricant composition can be formulated with the addition of various auxiliary components to achieve certain performance objectives for certain applications. For example, the lubricant composition can be a corrosion and oxidation lubricant formulation, a hydraulic lubricant formulation, turbine lubricating oil, and a lubricant formulation of an internal combustion engine. Accordingly, it is contemplated that the base oil can be formulated to achieve these objectives as discussed in the following.

[0073] If used, the anti-wear additive can be of various types. The anti-wear additive may include sulfur and / or phosphorus and / or halogen-containing compounds, for example sulfurized olefins and vegetable oils, alkylated triphenyl phosphates, tritolylphosphate, tricresylphosphate, chlorinated paraffins, alkyl and aryl di and trisulfides, amine salts of mono- and dialkylphosphate amine salts of methylphosphonic acid, diethanolaminomethyltholyltriasol, bis (2-ethylexyl) aminomethyloltriazole, derivative of 2,5-dimercapto-1,3,4-thiadiasol, 3 [(diisopropoxyphosphinothioyl) thio] ethyl propionate, triphenyl thiophosphate (triphenylphosphorothioate), tris (alkyiiphenyl) phosphorothioate mixtures thereof, diphenylmonononyl phenyl phosphorothioate, isobutylphenyldiphenyl phosphorothioate, dodecylamine salt of 3-hydroxy-3, 3-hydroxy-1,3-thiaphosphetane, 5,5,5-tris [iso-2-acetate] -octyl] trithiophosphoric, 2-mercaptobenzothiasol derivative such as 1- [N, N-bis (2-ethylexyl) aminomethyl] -2-mercapto-1H-1,3-benzothiazole, ethoxycarbonyl-5-octyldithio carbamate, and / or combinations thereof.

[0074] If it is employed, in addition or in exchange of the dihydrocarbyldithiophosphate salt described in the foregoing, the anti-wear additive can be used in various amounts. The anti-wear additive may be present in the lubricant composition in an amount ranging from 0.1 to 20, 0.5 to 15, 1 to 10, 0.1 to 1, 0.1 to 0.5, or 0.1 to 1.5% by weight, based on the total weight of the lubricant composition. Alternatively, the anti-wear additive may be present in amounts of less than 20, less than 10, less than 5, less than 1, less than 0.5, or less than 0.1% by weight, each based on the total weight of the lubricant composition.

[0075] If used, the antioxidant can be of various types. Suitable antioxidants include alkylated monophenols, for example, 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di-tert-butyl- 4-isobutylphenol, 2,6-dicyclohexyl-4-methylphenol 2- (a-methylcyclohexyl) -4,6-dimethylphenol, 2,6-dioctadecyl-4-methylphenol, 2,4,6-tricycloxyphenol, 2,6-diol -tert-butyl-4-methoxyimethylphenol, 2,6-di-nonyl-4-methylphenol, 2,4-dimethyl-6 (1'-methylundec-1'-i1) phenol, 2,4-dimethyl-6- ( 1'-methyleptadec-1-yl) phenol, 2,4-dimethyl-6- (1'-methyltridec-1'-yl) phenol, and combinations thereof.

[0076] Additional examples of suitable antioxidants include alkylthiomethylphenols, for example, 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethiophenol, 2,6- didodecylthiomethyl-4-nonylphenol, and combinations thereof. Hydroquinones and alkylated hydroquinones, for example, 2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4- octadecyloxyphenol, 2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-ter-stearate butyl-4-hydroxyphenyl, bis- (3,5-di-tert-butyl-4-hydroxyphenyl) adipate, and combinations thereof, may also be used.

[0077] In addition, the hydroxylated thiodiphenyl ethers, for example, 2,2'-thiobis (6-tert-butyl-4-methylphenol), 2,2'-thiobis (4-octylphenol), 4,4'-thiobis (6-tert-butyl-3-methylphenol), 4,4'-thiobis (6-tert-butyl-2-methylphenol), 4,4'-thiobis- (3,6-di-sec-amylphenol), disulfide of 4,4'-bis- (2,6-dimethyl-4-hydroxyphenyl), and combinations thereof, may also be used.

[0078] It is also contemplated that alkylidenebisphenols, for example 2, 2'-methylenebis (6-tert-butyl-4-methylphenol) 2,2'-methylenebis (6-tert-butyl-4-ethylphenol), 2,2 '-methylenebis [4-methyl-6- (a-methylcyclohexyl) phenol] 2,2'-methylenebis (4-methyl-1-6-cyclopentylphenol), 2,2'-methylenebis (6-nonyl-4-methylphenol), 2 , 2'-methylenebis (4,6-di-tert-butylphenol), 2,2'-ethylidebisbis (4,6-di-tert-butylphenol), 2,2'-ethylidebisbis (6-tert-butyl-4-) isobutylphenol), 2,2'-methylenebis [6- (a-methylbenzyl) -4-nonylphenol], 2,2'-methylenebis [6- (a, a-dimethylbenzyl) -4-nonylphenol], 4,4'- methylenebis (2,6-di-tert-butylphenol), 4,4'-methylenebis (6-tert-butyl-2-methylphenol), 1,1-bis (5-tert-butyl-4-hydroxy-2-methylphenyl) ) butane, 2,6-bis (3-tert-butyl-5-methyl-2-hydroxybenzyl) -4-methylphenol, 1,1,3-tris (5-tert-butyl-4-hydroxy-2-methylphenyl) butane, 1,1-bis (5-tert-butyl-4-hydroxy-2-methyl-phenyl) -3-n-dodecyl mercaptobutane, bis [3,3-bis (3'-tert-butyl-4'-hydroxyphenyl) ) butyrate] of ethylene glycol, bis (3-tert-butyl-4-hydroxy-5-methyl-phenyl) dicyclopentadiene, bis [2-3'-tert-butyl-2'-hi] droxy-5'-methylbenzyl) -6-tert-butyl-4-methylphenyl] tereptalate, 1,1-bis- (3,5-dimethyl-2-hydroxyphenyl) butane, 2,2-bis- (3,5- di-tert-butyl-4-hydroxyphenyl) propane, 2,2-bis- (5-tert-buty1-4-hydroxy-2-methylphenyl) -4-n-dodecyl mercaptobutane, 1,1,5,5-tetra- (5-ter- butyl-4-hydroxy-2-methylphenyl) pentane, and combinations thereof, can be used as antioxidants in the lubricant composition.

[0079] The compounds O-, N- and S-benzyl, for example 3,5,3 ', 5'-tetra-tert-butyl-4,4'-dihydroxydibenzyl ether, octadecyl-4-hydroxy-3, 5-dimethylbenzylmercaptoacetate, tris- (3,5-di-tert-butyl-4-hydroxybenzyl) amine, bis (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) dithiol terephthalate, bis (3,5 -di-tert-butyl-4-hydroxybenzyl) sulfide, isobutyl-3,5-di-tert-butyl-4-hydroxy benzylmercaptoacetate, and combinations thereof may also be used.

[0080] Hydroxybenzylated malonates, for example, dioctadecyl-2,2-bis- (3,5-di-tert-butyl-2-hydroxybenzyl) -malonate, di-octadecyl-2- (3-tert-butyl-4-) hydroxy-5-methylbenzyl) -malonate, di-dodecylmercaptoethyl-2,2-bis- (3,5-di-tert-butyl-4-hydroxybenzyl) malonate, bis [4- (1,1,3,3-tetramethylbutyl ) phenyl] -2,2-bis (3,5-di-tert-butyl-4-hydroxybenzyl) malonate, and combinations thereof are also suitable for use as antioxidants.

[0081] Triazine compounds, for example 2,4-bis (octylmercapto) -6- (3,5-di-tert-butyl-4-hydroxyanilino) -1,3,5-triazine, 2-octylmercapto-, 6- bis (3,5-di-tert-butyl-4-hydroxyanilino) -1,3,5-triazine, 2-octylmercapto-4,6-bis (3,5-di-tert-butyl-4-hydroxyphenoxy) - 1,3,5-triazine, 2,4,6-tris (3,5- di-tert-butyl-4-hydroxyphenoxy) -1,2,3-triazine, 1,3,5-tris (3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, 1, 3,5-tris (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl 2,4,6-tris (3,5-di-tert-butyl-4-hydroxyphenylethyl) -1,3,5-triazine, l, 3 , 5-tris (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) -hexahydro-1,3,5-triazine, 1,3,5-tris- (3,5-dicycloxy-4-hydroxybenzyl) -isocyanurate, and combinations thereof, can also be used.

[0082] Additional examples of antioxidants include aromatic hydroxybenzyl compounds, for example, 1,3-tris- (3,5-di-tert-butyl-4-hydroxybenzyl) -2,4,6-trimethylbenzene, 1,4 -bis (3,5-di-tert-butyl-4-hydroxybenzyl) -2,3,5,6-tetramethylbenzene, 2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) phenol, and combinations thereof. Benzylphosphonates, for example, dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl 3,5-di-tert-butyl-4 -hydroxybenzylphosphonate, dioctadecyl-5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, the calcium salt of the 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester, and combinations thereof, may also be used. In addition, acylaminophenols, for example 4-hydroxylauranylide, 4-hydroxystearanilide, and octyl N- (3,5-di-tert-butyl-4-hydroxyphenyl) carbamate.

[0083] Esters of [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols for example with methanol, ethanol, octadecanol, 1,6-hexanediol, 1,9-nonandiol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N ' bis (hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexandiol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo [2.2.2] octane, and combinations thereof, may also be used . It is further contemplated that the b- (5-tert-butyl-4-hydroxy-3-methylphenyl) -propionic acid esters with monohydric or polyhydric alcohols for example with methanol, ethanol, octadecanol, 1,6-hexanediol, 1,9 -nonandiol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N'-bis (hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexandiol, trimethylolpropane , 4-hydroxymethyl-l-phospha-2,6,7-trioxabicyclo [2.2.2] octane, and combinations thereof, may be used.

[0084] Additional examples of suitable antioxidants include those which include nitrogen, such as b- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid amides, for example N, N'-bis (3,5 -di-tert-butyl-4-hydroxyphenyl-propionyl) hexamethylenediamine, N, N'-bis (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) trimethylenediamine, N, N'-bis (3,5-di) -tert-butyl-4-hydroxyphenylpropionyl) hydrazine. Others Suitable examples of antioxidants include amino antioxidants such as N, N'-diisopropyl-p-phenylenediamine, N, N'-di-sec-butyl-p-phenylenediamine, N, N'-bis (1,4-dimethylpentyl) -p phenylenediamine, N, N'-bis (l-ethyl-3-methylpentyl) -p-phenylenediamine, N, N'-bis (1-methylheptyl) -p-phenylenediamine, N, N'-dicyclohexyl-p-phenylenediamine, N, N'-diphenyl-p-phenylenediamine, N, N'-bis (2-naphthyl) -p-phenylenediamine, N-isopropyl-N'-phenyl-p-phenylenediamine, Nl, 3-dimethyl-butyl) -N '-pheny1-p-phenylenediamine, N- (1-methylheptyl) -N'-phenyl-p-phenylenediamine, N-cyclohexyl-N'-phenyl-p-phenylenediamine, 4- (p-toluenesulfamoyl) diphenylamine, N, N '-dimethyl-N, N'-di-sec-butyl-p-phenylenediamine, diphenylamine, N-allyldiphenylamine, 4-isopropoxydiphenylamine, N-phenyl-1-naphthylamine, N-phenyl-2-naphthylane, octylated diphenylamine, example r, r'di ter-octyldiphenylamine, 4-n-butylaminophenol, 4-butyrylaminophenol, 4-nonanoylaminophenol, 4-dodecanoylaminophenol, 4-octadecanoylaminophenol, bis (4-methoxyphenyl) amine, 2,6-di-tert-butyl-4-dimethylamino methylphenol, 2,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylmethane, N, N, N ', N '-tetramethyl-4,4'-diaminodiphenylmethane, 1,2-bis [(2-methyl-phenyl) amino] ethane, 1,2-bis (phenylamino) propane, (o-tolyl) biguanide, bis [4- ( 1,3'-dimethylbutyl) phenyl] amine, tert-octylated N-phenyl-1-naphthylamine, a mixture of mono- and dialkylated ter-butyl / tert-octyldiphenylamines, a mixture of mono- and dialkylated isopropyl / isohexyldiphenylamines, mixtures of ter- butyl diphenylamines mono and dialkylated, 2,3-dihydro-3,3-dimethyl-4H-l, 4-benzothiazine, phenothiazine, N-allylphenothiazine, N, N, N ', N'-tetraphenyl-1, -diaminobut-2-ene, and combinations thereof.

[0085] Still further examples of suitable antioxidants include aliphatic or aromatic phosphites, thiodipropionic acid or thiodiacetic acid esters, or salts of dithiocarbamate or dithiophosphoric acid, 2,2,12,12-tetramethyl-5,9-dihydroxy-3 , 7,1-trithiatridecane and 2,2,15,15-tetramethyl-5,12-dihydroxy-3,7,10,14-tetrathiahexadecane, and combinations thereof. In addition, sulphurized acid esters, sulfurized fats and sulfurized dephtines and combinations thereof, may be used.

[0086] If used, the antioxidant can be used in various amounts. The antioxidant may be present in the lubricant composition in an amount ranging from 0.01 to 5, 0.1 to 3, or 0.5 to 2% by weight, based on the total weight of the lubricant composition. Alternatively, the antioxidant may be present in amounts of less than 5, less than 3 or less than 2% by weight, based on the total weight of the lubricant composition.

[0087] If used, the metal deactivator can be of various types. Suitable metal deactivators include benzotriazoles and derivatives thereof, for example 4- or 5-alkylbenzotriazoles (for example tolutriazole) and derivatives thereof, 5,6,7-tetrahydrobenzotriazole and 5,5'-methylenebisbenzotriazole; Mannich bases of benzotriazole or tolutriazole, for example l- [bis (2-ethylhexyl) aminomethyl) tolutriazoles and l- [bis (2-ethylhexyl) aminomethyl) benzotriazole; and alkoxyalkylbenzotriazoles such as 1- (nonyloxymethyl) benzotriazole, 1- (1-butoxyethyl) benzotriazole and 1- (1-cyclohexyloxybutyl) tolutriazole, and combinations thereof.

[0088] Further examples of suitable metal deactivators include 1,2,4-triazoles and derivatives thereof, and Mannich bases of 1,2,4-triazoles, such as 1- [bis (2-ethylhexyl) aminomethyl- 1,2,4-triazole; alkoxyalkyl-1,2,4-triazoles such as 1- (1-butoxyethyl) -1,2,4-triazole; Y 3-amino-1, 2,4-triazoles added, imidazole derivatives, for example 4,4'-methylenebis (2-undecyl-5-methylimidazole) and octyl ether of bis [(N-methyl) imidazol-2-yl ] carbinol, and combinations thereof. Further examples of suitable metal deactivators include heterocyclic sulfur-containing compounds, for example 2-mercaptobenzothiazole, 2,5-dimercapto-l, 3,4-thiadiazole and derivatives thereof; and 3,5-bis [di (2-ethylhexyl) aminomethyl] -1,3,4-thiadiazolin-2-one, and combinations thereof. Still further examples of metal deactivators include amino compounds, for example salicylidenepropylenediamine, salicylaminoquinidine and salts thereof, and combinations thereof.

[0089] If employed, the metal deactivator may be used in various amounts. The metal deactivator may be present in the lubricant composition in an amount ranging from 0.01 to 0.1, 0.05 to 0.01, or 0.07 to 0.1% by weight, based on the total weight of the lubricant composition. Alternatively, the metal deactivator can be present in amounts of less than 1.0, less than 0.7 or less than 0.5% by weight, based on the total weight of the lubricant composition.

[0090] If used, the corrosion inhibitor and / or friction modifier can be of various types. Suitable examples of corrosion inhibitors and / or friction modifiers include organic acids, their metal salts, for example alkyl and alkenyl succinic acid and their partial esters with alcohols, diols or hydroxycarboxylic acids, partial amides of alkyl and alkenyl succinic acids, fatty acids nonylphenoxyacetic, alkoxy- and alkoxyethoxycarboxylic acids such as dodecyloxyacetic acid, dodecyloxy (ethoxy) acetic acid, and also N-oleoylsarcosine, sorbitan monooleate, lead naphthenate, alkenyl succinic anhydrides, for example, dodecenylsuccinic anhydride, 2-carboxymethyl-1-dodecyl- 3-methylglycerol, and combinations thereof. Additional examples include heterocyclic compounds, for example: imidazolines and substituted oxazolines, and 2-heptadecenyl-1- (2-hydroxyethyl) imidazoline, phosphorus-containing compounds, for example: amine salts of phosphoric acid partial esters or phosphonic acid partial esters, molybdenum-containing compounds, such as dithiocarbamate molibdenod and other sulfur and phosphorus-containing derivatives, sulfur-containing compounds, for example: barium dinonylnaphthalenesulfonates, petroleum and calcium sulphonates, aliphatic carboxylic acids substituted with alkylthio, aliphatic esters of 2-sulfocarboxylic acid and salts thereof, derivatives of glycerol, for example: glycerol monooleate, 1- (alkylphenoxy) -3- (2-hydroxyethyl) glycerols, 1- (alkylphenoxy) -3- (2,3-dihydroxypropyl) glycerols and 2-carboxyalkyl-1,3-dialkyl glycerols , and combinations thereof.

[0091] If used, the corrosion inhibitor and / or friction modifier can be used in various amounts. The corrosion inhibitor and / or the friction modifier may be present in the lubricant composition in an amount ranging from 0.01 to 0.1, 0.05 to 0.01, or 0.07 to 0.1% by weight, based on the total weight of the composition of the composition. lubricant. Alternatively, the corrosion inhibitor and / or friction modifier may be present in amounts of less than 1, less than 0.7 or less than 0.5% by weight, based on the total weight of the composition of lubricant

[0092] If used, the viscosity index improver can be of various types. Suitable examples of viscosity index improvers include polyacrylates, polymethacrylates, vinylpyrrolidone / methacrylate copolymers, polyvinylpyrrolidones, polybutenes, olefin copolymers, styrene / acrylate copolymers and polyethers, and combinations thereof.

[0093] If employed, the viscosity index improver can be used in various amounts. The viscosity index improver may be present in the lubricant composition in an amount ranging from 0.01 to 20, 1 to 15, or 1 to 10% by weight, based on the total weight of the lubricant composition. Alternatively, the viscosity index improver may be present in amounts of less than 10, less than 8 or less than 5% by weight, based on the total weight of the lubricant composition.

[0094] If employed, the pour point depressant can be of various types. Suitable examples of pour point depressants include polymethacrylate and alkylated naphthalene derivatives, and combinations thereof.

[0095] If employed, the pour point depressant can be used in various amounts. The depressor The pour point can be present in the lubricant composition in an amount ranging from 0.01 to 0.1, 0.05 to 0.01, or 0.07 to 0.1% by weight, each based on the total weight of the lubricant composition. Alternatively, the pour point depressant may be present in amounts of less than 1.0, less than 0.7 or less than 0.5% by weight, based on the total weight of the lubricant composition.

[0096] If used, the detergent can be of various types. Suitable examples of detergents include overbased or neutral metal sulfonates, phenates and salicylates, and combinations thereof.

[0097] If used, the detergent can be used in various amounts. The detergent may be present in the lubricant composition in an amount ranging from 0.01 to 5, 0.1 to 4, 0.5 to 3, or 1 to 3% by weight, based on the total weight of the lubricant composition. Alternatively, the detergent may be present in amounts of less than 5, less than 4, less than 3, less than 2 or less than 1% by weight, based on the total weight of the lubricant composition.

[0098] In various embodiments, the lubricant composition is substantially free of water, for example, the lubricant composition includes less than 5, less than 4, less than 3, less than 2, less than 1, less than 0.5, or less than 0.1% by weight, of water, based on the total weight of the composition of lubricant. Alternatively, the lubricant composition can be completely free of water.

[0099] Preferred lubricant compositions provided for use and used in accordance with this invention include those which approve the CEC L-39-T96 seal compatibility test. The CEC L-39-T96 test involves maintaining a test specimen of a fluoropolymer in a lubricant composition at 150 ° C. The seal specimens are then removed and dried and the properties of the seal specimens are evaluated and compared to the seal specimens which were not heated in the lubricant composition. The percentage change in these properties is evaluated to quantify the compatibility of the fluoropolymer seal with the lubricant composition. The incorporation of the boroxine compound in the lubricant composition decreases the tendency of the lubricant composition to degrade the seals against the lubricant compositions which are free of the boroxine compound. [00100] The approved / not approved criterion includes maximum variations of certain characteristics after immersion for 7 days in clean oils without previously aging. The maximum variations for each characteristic depend on the type of elastomer used, the type of used motor, and if a device is used before treatment. [00101] Characteristics measured before and after immersion include DIDC hardness (dots); Resistance to Tension (%); Elongation in the Rupture (%); Volume Variation (%). For heavy duty diesel engines, the approved / not approved criteria is presented in the following in Table 1: Table 1: Compatibility of Fluoropolymer Seal for CEC L-39-T96 [00102] In these tests, a conventional lubricant composition passes the test if the exposed test specimen shows a change in hardness from -1% to + 5%; a tensile strength (when compared to a non-tested specimen) of -50% to + 10%; a change in elongation at break (when compared to an unproven specimen) of -60% to + 10%; and a volume variation, when compared with an unproven specimen) from -1% to + 5%. [00103] When the lubricant composition is tested in accordance with CEC L-39-T96 for Heavy Duty Diesel Engines, the change in hardness may vary from -1 to 5%, -0.5 to 5%, -0.1 to 5 %, 0.5 to 5%, wave 5%; the change in tensile strength can vary from -50 to 10%, -45 to 10%, -40 to 10%, or -35 to 10%; the change in elongation at break can vary from -60 to 10%, -55 to 10%, -50 to 10%, or -45 to 10%, and the change in volume variation can vary from -1 to 5%, -0.75 to 5%, -0.5 to 5%, -0.1 to 5%, or 0 to 5%. [00104] When the boroxine composition is used in the described lubricant compositions, the resulting lubricant composition has a fluoropolymer compatibility such that the fluoropolymer seal submerged in the lubricant composition shows a change in the tensile strength of less than 10, less than 15, less than 20, less than 25, less than 30, less than 35, less than 40, less than 45, less than 50, less than 55, or less than 60%, when proof of agreement with CEC L-39-T96 for Heavy Duty Diesel Engines. Similarly, when the boroxine compound is used in the described lubricant compositions, the resulting lubricant composition has a fluoropolymer compatibility such that a fluoropolymer shows a change in tensile strength and elongation at break of less than 20, less than 25, less than 30, less than 35, less than 40, less than 45, less than 50, less than 55, or less than 60% , when tested in accordance with CEC L-39-T96 for Heavy Duty Diesel Engines. [00105] Some of the compounds described in the above may interact in the lubricant composition, so that the components of the lubricant composition in the final form may be different from those components that were initially added or combined together. Some products formed accordingly, including products formed after employing the lubricant composition of this invention in its intended use, are not described or can be easily described. However, all such modifications, reaction products and products formed after employing the lubricant composition of this invention in its intended use, are expressly contemplated and therefore are included herein. Various embodiments of this invention include one or more of the modifications, reaction products, and products formed from employing the lubricant composition, as described above. [00106] A method for lubricating a system is provided. The method includes contacting the system with the lubricant composition described above. The system can Also understand an internal combustion engine. Alternatively, the system may further comprise any combustion engine or application that uses a lubricant composition. The system includes at least one fluoropolymer seal. [00107] The fluoropolymer seal may comprise a fluoroelastomer. The fluoroelastomer can be categorized under ASTM D1418 and the ISO 1629 designation of FKM for example. The fluoroelastomer may comprise copolymers of hexafluoropropylene (HFP) and vinylidene fluoride (VF2 of VF2), terpolymers of tetrafluoroethylene (TFE), vinylidene fluoride and hexafluoropropylene, perfluoromethylvinylether (PMVE), copolymers of TFE and propylene and copolymers of TFE, PMVE and ethylene. The fluoride content varies for example between 66 to 70% by weight, based on the total weight of the fluoropolymer seal. FKM is fluorinated rubber of the polymethylene type having fluoro substituent and perfluoroalkyl or perfluoroalkoxy groups in the polymer chain. [00108] In addition, a method for forming the lubricant composition is provided. The method includes combining the base oil and the boroxine compound, and, optionally, the sterically hindered amine compound. The boroxine compound can be incorporated into the base oil in any convenient manner. In this way, the boroxine compound can be added directly to the base oil at Disperse or dissolve it in the base oil at the desired level of concentration. Alternatively, the base oil can be added directly to the boroxine compound together with the stirring until the boroxine compound is provided at the desired level of concentration. The mixture can occur at ambient or lower temperatures, such as 30, 25, 20, 15, 10, or 5 ° C.

EXAMPLES [00109] Without being limited, in the following examples, the exemplary lubricant compositions were formulated by mixing each of the components together until they achieved homogeneity. A fully formulated lubricating oil composition containing dispersant, detergent, aminic antioxidant, phenolic antioxidant, antifoam, base oil, antiwear additives, pour point depressant and viscosity modifier were prepared. This lubricant composition, which is representative of a commercial crankcase lubricant, is designated as the "reference lubricant" and is used as a reference value to compare the effects of different components on seal compatibility. [00110] The reference lubricant was combined with various different boron-containing compounds and various different nitrogen-containing compounds to demonstrate the effect of the boron-containing compound and the effect of the nitrogen-containing compound on seal compatibility. Practical examples # 1, # 2, # 3 and # 4 each include one of the practical boroxine compounds and one of the practical amine compounds. Comparative Examples # 1-5 do not include any of the practical boroxine compounds. Comparative Examples # 6-8 do not include any of the practical amine compounds. Comparative Examples # 9- # 12 do not include the practical amine compounds or the practical boroxine compounds. [00111] The boron-containing compound added to the reference lubricant in Practical Examples # 1 and # 2 is trimethoxyboroxin. The boron-containing compound added to the reference lubricant in Practical Example # 3 is triethoxyboroxin. The boron-containing compound added to the reference lubricant in Practical Example # 4 is tri-n-butoxyboroxin. [00112] As described in the above, Comparative Examples # 1-5 do not include the practical boroxin compounds. Instead, the compositions of both of Comparative Example # 1 and Comparative Example # 2 are free of any boron-containing compound. Comparative Example # 1 includes the practical amine compound, while Comparative Example # 2 does not include the practical amine compound. The compound that contains boron added to the reference lubricant in Comparative Example # 3 was tris- (2-ethylhexyl) boroxine. The boron-containing compound added to the reference lubricant in Comparative Example # 4 is tributyl borate. The boron-containing compound added to the reference lubricant in Comparative Example # 5 is tri-isopropyl borate. [00113] Comparative Examples # 6-9 include the practical boroxine compounds although it does not include the practical amine compounds. The boroxine compound added to the reference lubricant in Comparative Examples # 6 and 7 is trimethoxyboroxin. The boroxine compound added to the reference lubricant in Comparative Example # 8 is triethoxyboroxin. The boroxine compound added to the reference lubricant in Comparative Example # 9 is tri-n-butoxyboroxin. [00114] Comparative Examples # 10-12 do not include either the practical boroxine compound or the practical amine compound. The boron-containing compound in Comparative Example # 10 is tris- (2-ethylhexyl) boroxine. The boron-containing compound in Comparative Example # 11 is tributyl borate. The boron-containing compound in Comparative Example # 12 is tri-isopropyl borate. [00115] The amine compound included in Practical Examples # 1-4 and Comparative Examples # 1 and 3-5 is (2,2,6,6-tetramethyl-4-piperidyl) dodecanoate. [00116] The respective amount of the reference lubricant and any additional components for each of the Practical and Comparative Examples are shown in Tables 2, 3, and 4 below: TABLE 2: Formulation of Practical Examples # l- # 4 TABLE 3: Formulation of Comparative Examples # 1-5 (C1-C5) TABLE 4: Formulation of Comparative Examples # 6-11 (C6-C12) [00117] The seal compatibility of the practical and comparative examples was evaluated using an industry standard CEC L-39-T96 seal compatibility test. The seal compatibility test of CEC-L-39-T96 is carried out by subjecting the seal or joints in the lubricant composition, heating the lubricant composition with the seal contained therein at an elevated temperature, and maintaining the elevated temperature during a period of time. The seals were then removed and dried, and the mechanical properties of the seal were evaluated and compared with the seal specimens which were not heated in the lubricant composition. The percentage change in these properties is analyzed to evaluate the compatibility of the seal with the lubricant composition. Each formulation was tested twice (Execution # 1 and Execution # 2) under the same conditions. The results of the seal compatibility test are shown in Tables 5-10.

Table 5: Seal Compatibility Test Results (Execution 1) - Practical examples # l- # 4 Table 6: Seal Compatibility Test Results (Execution 2) - Practical examples # l- # 4 Table 7: Seal Compatibility Test Results (Execution 1) - Comparative Examples # l- # 6 (C1-C6) Table 8: Seal Compatibility Test Results (Execution 2) - Comparative Examples # l- # 6 (C1-C6) Table 9: Seal Compatibility Test Results (Execution 1) - Comparative Examples # 7- # 12 (C7-C12) Table 10: Seal Compatibility Test Results (Execution 2) - Comparative Examples # 7- # 12 (C7-C12) [00118] Comparative example # 1 is illustrative of the effect of an amine compound on the seal compatibility of a lubricant composition. By comparing the tensile strength and elongation at break of Comparative Example # 1, which includes the practical amine compound, and Comparative Example # 2, which does not include the practical amine compound, it was found that the addition of a compound Practical amine in the reference lubricant negatively impacts the seal compatibility of the reference lubricant. The negative impact is quantified by the fact that the tensile strength and elongation at break is much worse for Comparative Example # 1 when compared to Comparative Example # 2. [00119] Practical Examples # 1, # 2, # 3, and # 4 each include the same practical amine compound as Comparative Example # 1, together with a sample of the practical boroxine compound. As can be seen in the results shown in Tables 4-7, the seal compatibility of Practical Examples # 1-4 is significantly improved over the seal compatibility of Comparative Example # 1 in terms of both tensile strength and elongation in the rupture. This significant improvement in seal compatibility is made evident by the fact that tensile strength and elongation at break is much worse for comparative example # 1 when compare with Practical Examples # 1-4. [00120] Tables 5-8 also demonstrate that the seal compatibility of Practical Example # 1 and 2 was improved in terms of tensile strength and elongation at break when compared to the seal compatibility of Comparative Examples # 3-5. The tensile strength of Practical Example # 1 was -39 and -32%; and the tensile strength of Practical Example # 2 was -2 and -5%; while the tensile strength of Comparative Examples # 3, 4, and 5, was -47-44%; -39 and -41; and -44 and -42%, respectively. Similarly, the elongation at break for Practical Example # 1 was -54 and -51%; the elongation at the break for Example Practical # 2 was 8 and -5%; while the elongation at break of Comparative Examples # 3, 4, and 5, was -72 and -68%; -64 and -61%; and -66% and -67%, respectively. This test shows that the lubricant composition of the Examples Practicals # 1 and 2 were much more compatible with seals in terms of tensile strength and elongation at break than the lubricant compositions of the Examples Comparative # 3-5. This comparison also provides evidence that the combination of trimethoxyboroxin and practical amine compounds in a lubricant composition produces much improved seal compatibility over a lubricant composition that includes other compounds that contain boron, such as those boron-containing compounds used in Comparative Examples # 3-5. [00121] Finally, the comparison of Comparative Example # 2 and Comparative Examples # 6-12 demonstrate that lubricating compositions that include compounds containing boron but do not include the practical amine compound do not adversely affect the seal compatibility of the lubricant composition. in a significant way. Accordingly, it was surprisingly found that the combination of the practical amine compound and the practical boroxine compounds has a synergistic impact on seal compatibility when present in the reference lubricant. [00122] It will be understood that the appended claims are not limited to express and the particular compounds, compositions, or methods described in the detailed description, which may vary between particular embodiments that fall within the scope of the appended claims. With respect to any Markush groups invoked herein to describe particular features or aspects of various modalities, it will be appreciated that different, special and / or unexpected results may be obtained from each member of the respective Markush group independent of all other Markush members. Each member of a Markush group it may be evoked individually and / or in combination and provide adequate support for specific modalities within the scope of the appended claims. [00123] It will also be understood that any margins and sub-margins evoked in describing various embodiments of the present invention independently and collectively fall within the scope of the appended claims, and it is understood that they describe and contemplate all margins including full and / or fractional values in the same, even if such values are not expressly written here. One skilled in the art will readily recognize that the listed margins and sub-margins sufficiently describe and allow various embodiments of the present invention, and such margins and sub-margins can be further delineated into relevant halves, thirds, quarters, fifths, and so forth. Just as an example, a margin "that varies from 0.1 to 0.9" can be delineated additionally in a lower third, that is, from 0.1 to 0.3, a half-third, that is, from 0.4 to 0.6, and a higher third, that is, , from 0.7 to 0.9, which individually and collectively are within the scope of the appended claims, and may be invoked individually and / or collectively and provide adequate support for the specific embodiments within the scope of the appended claims. [00124] Further, with respect to the language defining or modifying a margin, such as "at least", "more than", "less than", "no more than", and the like, it will be understood that such a language includes sub-margins and / or an upper or lower limit. As another example, a margin of "at least 10" inherently includes a submarine that varies from at least 10 to 35, a submarine that varies from at least 10 to 25, a submarine from 25 to 35, and so on, and each submarine can be evoked individually and / or collectively and provides adequate support for the specific modalities within the scope of the appended claims. Finally, an individual number within the described range can be evoked and provide adequate support for specific modalities within the scope of the appended claims. For example, a range "varying from 1 to 9" includes various individual integers, such as 3, as well as individual numbers that include a decimal point (or fraction, such as 4.1) that can be evoked and provide adequate support for modalities specific within the scope of the appended claims. [00125] The invention has been described in an illustrative form, and it will be understood that the terminology which has been used is intended to be in the nature of the words of the description rather than limitation. Many modifications and variations of the present invention are possible in light of the previous teachings and the invention may be practiced otherwise than as specifically described. [00126] The subject matter of all combinations of independent and dependent claims, both simple and multiple dependent, is expressly contemplated herein. Examples include, but are not limited to, the following: • Claim 3 may depend on any of claims 1 to 2; • Claim 4 may depend on any of the rei indications 1 to 3; • Claim 5 may depend on any of claims 1 to 4; • Claim 6 may depend on any of claims 1 to 5; • Claim 7 may depend on any of claims 1 to 6; • Claim 9 may depend on any of claims 1 to 8; • Claim 10 may depend on any of claims 1 to 9; • Claim 11 may depend on any of claims 1 to 10; Y • Claim 12 may depend on any of claims 1 to 11.

Claims

CLAIMS 1. A lubricant composition characterized in that it comprises: a base oil; ina has the general formula CI), wherein each R1 is independently an alkyl group having from 1 to 7 carbon atoms; and a sterically hindered amine compound that includes an amount ranging from 0.5 to 5% by weight based on the total weight of the lubricant composition. 2 . The lubricant composition according to claim 1, characterized in that each R1 is independently an alkyl group having from 1 to 5 carbon atoms. 3. The lubricant composition according to claim 1, characterized in that R1 is a methyl group. Four . The lubricant composition according to claim 1, characterized in that the compound of Boroxine is included in an amount ranging from 0.1 to 5% by weight based on the total weight of the lubricant composition. 5. The lubricant composition according to claim 1, characterized in that at least 50% of the boroxine compound remains unreacted in the lubricant composition based on the total weight of the boroxine compound used to form the lubricant composition before any reaction in the lubricant composition. the composition of lubricant. 6. The lubricant composition according to claim 1, characterized in that the lubricant composition has a fluoropolymer compatibility such that the fluoropolymer seal submerged in the lubricant composition shows a change in tensile strength of less than 45% when tested in accordance with CEC L-39-T96; or wherein the lubricant composition has a fluoropolymer compatibility such that the fluoropolymer seal submerged in the lubricant composition shows a change in elongation at rupture of less than 60% when tested in accordance with CEC L-39- T96. 7. The lubricant composition according to claim 1, characterized in that the spherically hindered amine compound has a total base number of at least 70 mg KOH / g when tested in accordance with ASTM D4739. 8. The lubricant composition in accordance with any of the preceding claims, characterized in that the sterically hindered amine compound comprises at least one piperidine ring and at least one ester group. 9. The lubricant composition according to claim 1, characterized in that the sterically hindered amine is (2,2,6,6-tetramethyl-4-piperidyl) dodecanoate. 10. The lubricant composition according to claim 1, characterized in that the base oil has a viscosity ranging from 1 to 20 cSt when tested at 100 ° C in accordance with ASTM D445 and is selected from the group I API oil group , Group II API oil, Group III API oil, Group IV API oil, Group V API oil, and combinations thereof. 11. The lubricant composition according to claim 1, further characterized in that it comprises a dispersant. 12. The lubricant composition according to claim 1, further characterized in that it comprises a dihydrocarbyldithiophosphate salt. 13. A lubricant composition characterized in that it comprises: a base oil; a boroxine compound has the general formula (I) wherein each R1 is independently an alkyl group having from 1 to 7 carbon atoms; and a sterically hindered amine compound having the general formula (II) or (III): rllK iHli. wherein each R2 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms, and wherein at least two groups designated by R2 are an alkyl group; wherein each R3 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms; wherein each R4 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms, and wherein at least two groups designated by R4 are an alkyl group; wherein each R5 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms; Y wherein the hydrocarbyl groups designated by R2, R3, R4, and R5 are each independently an alcohol group, an alkyl group, an amide group, an ether group, or an ester group. 14. The lubricant composition according to claim 13, characterized in that the spherically hindered amine compound has the general formula (IV): and is described in the foregoing and wherein at least three of R2 are independently an alkyl group. 15. A package of additives for a lubricant composition, the additive package characterized in that it comprises: a boroxine compound having the general formula (I): fli. wherein each R1 is independently an alkyl group having from 1 to 7 carbon atoms; and a spherically hindered amine having the general formula (II) or (III) l. (lili. wherein each R2 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 atoms 2 carbon, and wherein at least two groups designated by R are an alkyl group; wherein each R3 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms; wherein each R4 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms, and wherein at least two groups designated by R4 are an alkyl group; wherein each R5 is independently a hydrogen atom or a hydrocarbyl group having from 1 to 17 carbon atoms; Y wherein the hydrocarbyl groups designated by R2, R3, R4, and R5 are each independently an alcohol group, an alkyl group, an amide group, an ether group, or an ester group. 16. The additive package according to claim 15, characterized in that each R1 is independently an alkyl group having from 1 to 5 carbon atoms. 17. The additive package according to claim 15, characterized in that each R1 is a methyl group. 18. The additive package according to claim 16, characterized in that the sterically hindered amine compound comprises at least one piperidine ring and at least one ester group. 19. The additive package according to claim 18, further characterized in that it comprises a dihydrocarbyldithiophosphate salt. 20. The package of additives according to claims 15, 16, 17, 18 or 19, further characterized in that it comprises a dispersant.