EP0686690B1 - Compositions lubrifiantes pour engrenages et transmissions aux propriétés dispersantes de boues. - Google Patents

Compositions lubrifiantes pour engrenages et transmissions aux propriétés dispersantes de boues. Download PDF

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Publication number
EP0686690B1
EP0686690B1 EP94304031A EP94304031A EP0686690B1 EP 0686690 B1 EP0686690 B1 EP 0686690B1 EP 94304031 A EP94304031 A EP 94304031A EP 94304031 A EP94304031 A EP 94304031A EP 0686690 B1 EP0686690 B1 EP 0686690B1
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EP
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Prior art keywords
weight
alkyl
composition according
methacrylate
carbon atoms
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EP94304031A
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German (de)
English (en)
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EP0686690A1 (fr
Inventor
Shoji Takigawa
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Sanyo Chemical Industries Ltd
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Sanyo Chemical Industries Ltd
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Priority to DE69431710T priority patent/DE69431710T2/de
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • C10M137/08—Ammonium or amine salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • C10M137/10—Thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/12—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M149/00—Lubricating compositions characterised by the additive being a macromolecular compound containing nitrogen
    • C10M149/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M149/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amino group
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M149/00—Lubricating compositions characterised by the additive being a macromolecular compound containing nitrogen
    • C10M149/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M149/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
    • C10M159/12—Reaction products
    • C10M159/20—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products
    • C10M159/24—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products containing sulfonic radicals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M167/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound, a non-macromolecular compound and a compound of unknown or incompletely defined constitution, each of these compounds being essential
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/022—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amino group
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/022—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amino group
    • C10M2217/023—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amino group the amino group containing an ester bond
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/028—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/046—Overbasedsulfonic acid salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/041—Triaryl phosphates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/042—Metal salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/043—Ammonium or amine salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/049—Phosphite
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
    • C10M2223/061—Metal salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/10—Phosphatides, e.g. lecithin, cephalin
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/02—Bearings
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C10N2040/046—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for traction drives

Definitions

  • This invention relates to gear and transmission lubricant compositions, having improved sludge-dispersibility, particularly, those useful for automotive gear and transmission fluids.
  • US-A-3640872 describes an automatic transmission fluid comprising a major proportion of a mineral lubricating oil and a zinc di (alkylphenoxypolyalkoxyalkyl) dithiophosphate and which is said to have a long friction-stable life.
  • the anti-rust and corrosion inhibiting properties of the transmission fluid are improved by optionally including an additive which contains alkyl phosphoric acid esters.
  • (meth)acrylate represents acrylate and/or methacrylate; and similar expressions are used hereinafter].
  • Suitable base oils used in the present invention are mineral oils, having a viscosity of 1 ⁇ 50 cSt (centistokes), preferably 2 ⁇ 30 cSt at 100°C.
  • Base oils having a viscosity higher than 50 cSt give rise to energy loss because of too high viscosity resistance. Oils of less than 1 cSt are liable to result in evaporation during use at elevated temperature and to cause seizing on account of shortage of oil film exposed to extreme pressure at lubricating parts.
  • Viscosity index (hereinafter referred to as VI) of base oils is at least 60, preferably at least 70. Oils of VI less than 60 do not provide satisfactory viscosity-temperature properties.
  • Illustrative of suitable base oils are 100 neutral oil, 150 neutral oil, 300 neutral oil, 500 neutral oil, 150 bright stoch and the like.
  • Suitable phosphorus-containing metal-free organic compound (A) are phosphate esters, phosphite esters, phosphonate esters, and amine salts of these esters; as well as mixtures of two or more of these compounds; as represented by any of the following formulae (1), (2), (3) and (4).
  • O P(OR) p (OH) 3-p
  • O P(OR) q (OH) 3-q ⁇ NH r R' 3-r
  • p is an integer of 1, 2 or 3; q and r are independently integers of 1 or 2.
  • R and R' are independently selected from the group consisting of saturated or unsaturated alkyl groups containing at least 4 carbon atoms, aryl groups and alkyl-subsituted aryl groups.
  • R and R' include straight-chain or branched, saturated or unsaturated alkyl groups (aliphatic hydrocarbyl groups) containing 4 ⁇ 30 or more, preferably 4 ⁇ 20 carbon atoms, such as n-, iso-, sec- and t-butyl, hexyl, octyl, 2-ethylhexyl, decyl, dodecyl, tridecyl, tetradecyl, hexadecyl, octadecyl, eicocyl, and oleyl groups; aryl groups, such as phenyl and naphthyl groups; and aryl groups subsituted substituted with one or more alkyl groups containing 1 ⁇ 20, preferably 1 ⁇ 10
  • Phosphorus-containing compounds as written in C.J.Boner "Gear and Transmission Lubricants” (1964 Reinhold Publishing Corp.), page 94, Table 3.8, may also be used.
  • phosphorus-containing metal-free organic compound (A) preferred are those of the formula (1), particularly alkyl phosphate containing 4 ⁇ 18 carbon atoms in the alkyl group. The most preferred is mono-oleyl phosphate.
  • the amount of the phosphorus-containing metal-free organic compound (A) is 0.1 ⁇ 3 %, based on the weight of the lubricant composition.
  • Suitable alkyl (meth)acrylates (a), constituting said oil-soluble copolymer (B), are ones containing 1 ⁇ 24 carbon atoms in the alkyl group; and include, for example: (a 1 ) C8 ⁇ 20 alkyl (meth)acrylates, such as octyl, decyl, dodecyl, tridecyl, tetradecyl, hexadecyl, octadecyl and eicocyl (meth)acrylates; (a 2 ) C1 ⁇ 4 alkyl (meth)acrylates, such as methyl, ethyl, propyl and butyl (meth)acrylates; (a 3 ) C5 ⁇ 7 alkyl (meth)acrylates, such as pentyl, hexyl and heptyl (meth)acrylates; (a 4 ) C21 ⁇ 24 alkyl (meth)acrylates, such as Nafol 20+ and Naf
  • (a 1 ) particularly decyl methacrylate and dodecyl methacrylate
  • (a 2 ) particularly methyl methacrylate
  • Suitable N,N-dialkylaminoalkyl (meth)acrylate (b), constituting said oil-soluble copolymer (B), include one by the following formula (5): wherein R 1 and R 2 are the same or different alkyl groups containing not more than 10 carbon atoms, R 3 is an alkylene group containing 2 ⁇ 10 carbon atoms, and R 4 is hydrogen atom or methyl group.
  • Illustrative of (b) are N,N-dimethylaminoethyl (meth)acrylates, N,N-diethylaminoethyl (meth)acrylates, N,N-diethylaminohexyl (meth)acrylates, N,N-dimethylaminopropyl (meth)acrylates, N,N-dibutylaminooctyl (meth)acrylates, and mixtures of two or more of them.
  • preferred are N,N-dimethylaminoethyl methacrylate and N,N-diethylaminoethyl methacrylate.
  • Said oil-soluble copolymer (B) may contain monomer units of (c) one or more of N-vinyl-pyrrolidone and morpholinoalkyl (meth)acrylates, to improve sludge dispersibility.
  • Suitable morpholinoalkyl (meth)acrylates include ones containing 2 ⁇ 4 or more carbon atoms in the alkylene, such as morpholinoethyl and morpholinopropyl (meth)acrylates. Among these, preferred is N-vinyl-pyrrolidone.
  • Said copolymer (B) may further contain monomer unis of (d) one or more additional monomers.
  • additional monomers (d) are aromatic vinyl compounds, such as styrene and vinyltoluene; esters (such as alkyl esters containing not more than 20 carbon atoms in the alkyl group) of unsaturated dicarboxylic acid (such as maleic, fumaric and itaconic acids), for example, dibutyl, dioctyl and dilauryl maleates, and dihexyl, dihexadecyl and dioctadecyl fumarates; and vinyl esters (ones containing not more than 5 carbon atoms in the alkyl group), such as vinyl acetate and vinyl propionate; and so on.
  • styrene in view of VI and bodying effects.
  • % represents % by weight.
  • Copolymer (B) can be produced by usual polymerization techniques, for instance, by radical polymerization of (a) and (b) with or without (c) and/or (d), within a solvent, such as mineral oil.
  • a solvent such as mineral oil.
  • any polymerization catalysts for example, azo compounds, such as azobis-isobutyrenitrile (hereinafter referred to as AIBN) and azobis-valeronitrile, and peroxides, such as benzoyl peroxide, cumyl peroxide and lauryl peroxide, with or without chain transfer agents, such as mercaptans (lauryl mercaptan and the like).
  • Said copolymer (B) is oil-soluble and is effective as a VI improver in addition to dispersant.
  • (B) has a weight-average molecular weight (hereinafter referred to as Mw ), as measured by GPC (gel permeation chromatography) using calibration curve of polystyrene, of generally 20,000 ⁇ 200,000, preferably 30,000 ⁇ 150,000.
  • Mw weight-average molecular weight
  • Polymer of too high molecular weight causes degradation to form shorter chain polymer when subjected to shearing and cannot maintain necessary viscosity and VI for a long period of time.
  • Polymer of too low molecular weight is to be used in a larger amount in order to attain sufficient viscosity.
  • the gear or transmission lubricant composition of the present invention contains, as a practical use level of the lubricant, 0.1 - 3 %, more preferably 0.1 ⁇ 2 %, of said phosphorus-containing organic compound (A) and 1 ⁇ 30 %, preferably 2 ⁇ 25 %, more preferably 3 ⁇ 20 %, of said oil-soluble copolymer (B).
  • Concentrate containing (A) and/or (B) in higher concentration than the above range may be prepared, and this is diluted to the level of practical use.
  • composition of this invention may further contain one or more additives, usually used in gear and transmission lubricants.
  • additives include, for example, detergents, such as sulfonates, salicylates, phenates and naphthenates; dispersants, such as alkenylsuccinimides and Mannich condensates; anti-oxidants, such as thiophosphates, amines and hindered phenols; oiliness additives, such as fatty acids and esters thereof; antiwear agent, other than (A), such as molybdenum dithiophosphate and molybdenum carbamate; and extreme pressure agents, such as sulfur-containing compounds, phosphorus-containing compounds and chlorine-containing compounds.
  • detergents such as sulfonates, salicylates, phenates and naphthenates
  • dispersants such as alkenylsuccinimides and Mannich condensates
  • anti-oxidants such as thiophosphates, amines and hindered phenols
  • additives can be used in such amounts : 0 ⁇ 10 % of the detergent, 0 ⁇ 10 % of the dispersant, 0 ⁇ 5 % of the anti-oxidant, 0 ⁇ 3 % of the oiliness additive, 0 ⁇ 10 % of the antiwear agent, and 0 ⁇ 10 % of the extreme pressure agent.
  • compositions of the invention containing said phosphorus-containing organic compound (A) and said oil-soluble copolymer (B), are useful as gear and transmission lubricants, particularly automotive gear lubricants. Excellent effects can be attained especially when used as automatic transmission fluid for torque converters.
  • Method A represents the amount of sludge obtained by centrifuging the oil after the test
  • Method B represents the amount of sludge obtained by centrifuging the oil to which a flocculant was added after the test.
  • the amounts of Methds A and B show resistance to oxidation, and the difference between the amounts of Methods A and B means sludge dispersability.
  • Example No. Example Comparative Example 1 2 3 4 5 1 2 3 Copolymer B1 B2 B3 B4 B5 b1 b2 b3 Formulation I I I I I I I I I I Resistance to Oxidation Method A 0.02 0.02 0.05 0.03 0.05 0.91 1.08 2.96 Method B 0.33 0.32 0.49 0.35 0.38 0.95 1.13 3.01 Difference 0.31 0.30 0.44 0.32 0.30 0.04 0.05 0.05 Example No.
  • Example Comparative Example 6 7 8 9 10 4 5 6 Copolymer B1 B2 B3 B4 85 b1 b2 b3 Formulation II II II II II II II Resistance to Oxidation Method A 0.05 0.03 0.06 0.03 0.05 0.90 1.23 2.99 Method B 0.35 0.32 0.36 0.39 0.35 0.94 1.28 3.05 Difference 0.30 0.29 0.30 0.36 0.30 0.04 0.05 0.06
  • compositions of the present invention provided extremely small amount of sludge and showed excellent sludge dispersibility and resistance to oxidation.
  • compositions of this invention when used as gear and transmission lubricants, particularly automatic transmission fluid for torque converters, can attain excellent sludge dispersibility with remarkably reducing sludge formation.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Claims (10)

  1. Composition de lubrifiant pour engrenages ou transmissions, qui comprend une proportion dominante d'une huile minérale de base, ayant une viscosité de 1 à 50 cSt à 100°C et ayant un indice de viscosité d'au moins 60 ; contenant, sur la base du poids de la composition,
       0,1 à 3 % de (A) au moins un composé organique contenant du phosphore et dépourvu de métaux, choisi dans le groupe consistant en les composés représentés par n'importe lesquels des formules (1), (2), (3) et (4) suivantes : O=P(OR)p(OH)3-p O=P(OR)q(OH)3-qNHrR1 3-r P(OR)q(OH)3-p P(OR)q(OH)3-qNHrR1 3-r    dans lesquelles p représente un nombre entier de 1 à 3 ; q et r représentent, indépendamment, le nombre entier 1 ou 2 ; R et R' sont choisis, indépendamment, dans le groupe consistant en des groupes alkyle saturés ou insaturés contenant au moins 4 atomes de carbone, des groupes aryle et des groupes aryle à substituant alkyle ;
       et 1 à 30 % de (B) au moins un copolymère, soluble dans l'huile, contenant 92 à 99 %, de préférence 94 à 98 % en poids de motifs monomères (a) d'un acrylate ou méthacrylate d'alkyle, contenant de préférence 1 à 24 atomes de carbone dans le groupe alkyle, et 1 à 8 %, de préférence 2 à 6 % en poids de motifs monomères (b) d'un acrylate ou méthacrylate de N,N-dialkylamino-alkyle.
  2. Composition suivant la revendication 1, dans laquelle le monomère (a) comprend (a1) un acrylate ou méthacrylate d'alkyle contenant 8 à 20 atomes de carbone dans le groupe alkyle et, facultativement, (a2) un acrylate ou méthacrylate d'alkyle contenant 1 à 4 atomes de carbone dans le groupe alkyle.
  3. Composition suivant la revendication 2, dans laquelle ledit copolymère contient 52 à 99 %, de préférence 64 à 93 % en poids de motifs monomères de (a1), et 0 à 40 %, de préférence 5 à 30 % en poids de motifs monomère de (a2) .
  4. Composition suivant la revendication 2 ou la revendication 3, dans laquelle (a2) est le méthacrylate de méthyle.
  5. Composition suivant l'une quelconque des revendications 1 à 4, dans laquelle ledit copolymère contient en outre jusqu'à 10 % en poids de motifs monomères (c) d'au moins un monomère choisi dans le groupe consistant en la N-vinylpyrrolidone, un acrylate de morpholino-alkyle et un méthacrylate de morpholino-alkyle ; et/ou jusqu'à 30 % en poids de motifs monomères (d) d'au moins un monomère choisi dans le groupe consistant en un composé vinylique aromatique, des esters alkyliques d'un acide dicarboxylique insaturé ne contenant pas plus de 20 atomes de carbone dans le groupe alkyle, et des esters vinyliques.
  6. Composition suivant l'une quelconque des revendications 1 à 5, dans laquelle ledit copolymère a une moyenne en poids du poids moléculaire de 20 000 à 200 000.
  7. Composition suivant l'une quelconque des revendications 1 à 6, qui contient en outre un ou plusieurs des additifs suivants :
    1) un détergent choisi de préférence entre des sulfonates, des salicylates, des phénates et des naphténates ;
    2) un dispersant choisi de préférence entre des alcénylsuccinimides et des produits de condensation de Mannich ;
    3) un anti-oxydant choisi de préférence entre des thiophosphates, des amines et des phénols à encombrement stérique ;
    4) un additif d'onctuosité choisi de préférence entre des acides gras et leurs esters ;
    5) un agent anti-usure choisi de préférence entre le dithiophosphate de molybdène et le carbamate de molybdène ; et
    6) un agent extrême-pression choisi de préférence entre des composés contenant du soufre, des composés contenant du phosphore et des composés contenant du chlore.
  8. Composition suivant la revendication 7, qui contient ledit additif en les quantités suivantes :
    1) 0 à 10 % en poids dudit détergent,
    2) 0 à 10 % en poids dudit dispersant,
    3) 0 à 5 % en poids dudit anti-oxydant,
    4) 0 à 3 % en poids dudit additif d'onctuosité,
    5) 0 à 10 % en poids dudit agent anti-usure, et
    6) 0 à 10 % en poids dudit agent extrême-pression.
  9. Huile pour engrenages, en particulier fluide pour transmissions automatiques, comprenant la composition suivant l'une quelconque des revendications 1 à 8.
  10. Convertisseur de couple qui renferme le fluide pour transmissions automatiques suivant la revendication 9.
EP94304031A 1994-06-06 1994-06-06 Compositions lubrifiantes pour engrenages et transmissions aux propriétés dispersantes de boues. Revoked EP0686690B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP94304031A EP0686690B1 (fr) 1994-06-06 1994-06-06 Compositions lubrifiantes pour engrenages et transmissions aux propriétés dispersantes de boues.
DE69431710T DE69431710T2 (de) 1994-06-06 1994-06-06 Schmiermittelzusammensetzungen für Getriebe und Kraftübertragung mit verbesserten Dispergierungseigenschaften von Schlamm.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94304031A EP0686690B1 (fr) 1994-06-06 1994-06-06 Compositions lubrifiantes pour engrenages et transmissions aux propriétés dispersantes de boues.

Publications (2)

Publication Number Publication Date
EP0686690A1 EP0686690A1 (fr) 1995-12-13
EP0686690B1 true EP0686690B1 (fr) 2002-11-13

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Application Number Title Priority Date Filing Date
EP94304031A Revoked EP0686690B1 (fr) 1994-06-06 1994-06-06 Compositions lubrifiantes pour engrenages et transmissions aux propriétés dispersantes de boues.

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EP (1) EP0686690B1 (fr)
DE (1) DE69431710T2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5807815A (en) * 1997-07-03 1998-09-15 Exxon Research And Engineering Company Automatic transmission fluid having low Brookfield viscosity and high shear stability
US6586375B1 (en) * 2002-04-15 2003-07-01 The Lubrizol Corporation Phosphorus salts of nitrogen containing copolymers and lubricants containing the same
DE102011076364A1 (de) 2011-05-24 2012-11-29 Evonik Rohmax Additives Gmbh Schmiermittelzusammensetzung mit phosphatfunktionalisierten Polymeren
EP4249576A3 (fr) * 2018-11-12 2023-12-06 The Lubrizol Corporation Composition lubrifiante pour engrenage automobile ou industriel et son utilisation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892784A (en) * 1955-06-29 1959-06-30 California Research Corp Oxidation resistant lubricant compositions
US3309317A (en) * 1964-06-08 1967-03-14 Shell Oil Co Lubricating composition
US3640872A (en) * 1968-10-25 1972-02-08 Texaco Inc Automatic transmission fluid
US3702824A (en) * 1970-06-12 1972-11-14 Texaco Inc Friction reducing agent for lubricants
GB1413677A (en) * 1972-10-11 1975-11-12 Sun Oil Co Pennsylvania Lubricant composition
US4036768A (en) * 1976-06-14 1977-07-19 Texaco Inc. Polymethacrylate and lube composition thereof

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Publication number Publication date
EP0686690A1 (fr) 1995-12-13
DE69431710D1 (de) 2002-12-19
DE69431710T2 (de) 2003-07-24

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