WO2004015043A1 - Engine oils comprising lead corrosion-inhibitors - Google Patents

Engine oils comprising lead corrosion-inhibitors Download PDF

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Publication number
WO2004015043A1
WO2004015043A1 PCT/EP2003/008352 EP0308352W WO2004015043A1 WO 2004015043 A1 WO2004015043 A1 WO 2004015043A1 EP 0308352 W EP0308352 W EP 0308352W WO 2004015043 A1 WO2004015043 A1 WO 2004015043A1
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WO
WIPO (PCT)
Prior art keywords
triazole
group
formula
tert
aminomethyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2003/008352
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English (en)
French (fr)
Inventor
David Eliezer Chasan
Sunray Difrancesco
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Schweiz AG
Original Assignee
Ciba Spezialitaetenchemie Holding AG
Ciba SC Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ciba Spezialitaetenchemie Holding AG, Ciba SC Holding AG filed Critical Ciba Spezialitaetenchemie Holding AG
Priority to BR0313248-0A priority Critical patent/BR0313248A/pt
Priority to EP03784098A priority patent/EP1532232A1/en
Priority to CA002494639A priority patent/CA2494639A1/en
Priority to AU2003253351A priority patent/AU2003253351B2/en
Priority to JP2004526808A priority patent/JP2005534782A/ja
Priority to MXPA05001129A priority patent/MXPA05001129A/es
Publication of WO2004015043A1 publication Critical patent/WO2004015043A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
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    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/38—Heterocyclic nitrogen compounds
    • C10M133/44—Five-membered ring containing nitrogen and carbon only
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    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/02—Sulfurised compounds
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    • C10M141/06—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic nitrogen-containing compound
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    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/08—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic sulfur-, selenium- or tellurium-containing compound
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    • 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
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    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
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    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
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    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C—CHEMISTRY; METALLURGY
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    • 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
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    • 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
    • C10M2223/047—Thioderivatives not containing metallic elements
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    • 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
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    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C10M2227/09—Complexes with metals
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    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
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    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/12—Groups 6 or 16
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
    • C—CHEMISTRY; METALLURGY
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/14—Metal deactivation
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    • C10N2040/25—Internal-combustion engines
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel engines

Definitions

  • the present invention relates to engine oil (engine fluid) compositions that are non-aggressive towards lead.
  • U.S. Patent Specification No. 4,734,209 discloses metal deactivators for functional fluids.
  • U.S. Patent Specification No. 4,491,527 discloses compositions useful for the inhibition of lead paint deposition in lubricants.
  • Engine oil specifications are becoming more stringent in the way of performance requirements, and new formulations are under development to meet these new specifications.
  • Engine oil specifications are defined in ASTM D 4485.
  • the new engine oil formulations under development comprise certain additive chemistries. Many of these additive chemistries are corrosive to lead. It is difficult for formulators to meet the present engine oil specifications by employing certain beneficial additives while also meeting the specification for lead corrosion.
  • certain components of formulated engine oils that cause lead corrosion include certain detergents, antiwear additives, friction modifiers and antioxidants. Many such desired additive chemistries are disqualified from use due to causing engine oil formulations to not meet industry specifications for limits on lead corrosion.
  • desired additive chemistries that are aggressive towards lead and are otherwise disqualified from use in engine oils include sulfur-containing additives and certain vegetable oil-derived friction modifiers.
  • engine oils that comprise certain 1 ,2,4-triazole metal deactivators are especially non-aggressive towards lead, for example lead engine parts such as bearings.
  • the engine oils according to this invention meet corrosion protection performance requirements of diesel lubricant specifications defined in ASTM D 4485. This issue of lead corrosion is generally not a problem in other types of lubricants, for example turbine and hydraulic oils.
  • the engine oils of this invention are diesel and universal oils. Universal oils encompass both diesel oils and passenger car oils.
  • the engine oils are employed in internal combustion engines, for example, in motor vehicles fitted, for example, with engines of the Otto, Diesel, two-stroke, Wankel or orbital type.
  • the present invention relates to an engine oil composition that is non-aggressive towards lead, which composition comprises
  • At least one oil additive that is aggressive towards lead which is selected from the group consisting of antioxidants, antiwear additives, dispersants, detergents, an- tifoam additives, viscosity index improvers, copper passivators, rust inhibitors, pour- point depressants, demulsifiers and friction modifiers, where P and R are the same or different and are C C 20 alkyl, C 3 -C 20 alkenyl, C 5 -
  • X is O, S or N
  • R 3 is hydrogen or C Caoalkyl, R is CrC ⁇ 2 alkylene, n is 0 or an integer from 1 to 6, or one of R-i and R 2 is a group of formula
  • R 2 is a group of formula (II) and Ri is a group of formula -[R ] n -N(R 5 )-A-[N(R 5 ) 2 ] m
  • R is, for example, a C r C 6 alkylene group, for example, a C 2 -C 3 alkylene.
  • the number n is for example, 0, 1 , 2, 3, 4, 5 or 6.
  • Alkyl is straight or branched chain and is, for example, methyl, ethyl, n-propyl, iso-propyl, n- butyl, sec-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, 2-ethylhexyl, n-nonyl, n-decyl, n-dodecyl, n-tetradecyl, n-hexadecyl, n-octadecyl or n-icosyi.
  • Alkenyl is straight or branched chain and is, for example, prop-2-enyl, but-2-enyl, 2-methyl- prop-2-enyl, pent-2-enyl, hexa-2,4-dienyl, dec-10-enyl or eicos-2-enyl.
  • Cycloalkyl is, for example, cyclopentyl, cyclohexyl, cyclooctyl, cyclodecyl, adamantyl or cyclododecyl.
  • Aralkyl is, for example, benzyl, 2-phenylethyl, benzhydryl or naphthylmethyl.
  • Aryl is, for example, phenyl or naphthyl.
  • the heterocyclic group is, for example, a morpholine, pyrrolidine, piperidine or a perhydroazepine ring.
  • Alkylene includes, for example, methylene, ethylene, 1 :2- or 1 :3-propylene, 1:4-butylene, 1 :6- hexylene, 1 :8-octylene, 1 :10-decylene and 1:12-dodecylene.
  • Arylene includes, for example, phenylene and naphthylene.
  • a representative compound of formula (I) is, for example, 1 -(di-isooctylaminomethyl)triazole, that is 1-(di-isooctylaminomethyl)-1 ,2,4-triazole, or is 1-(di-(2-ethylhexyl)aminomethyl) 1 ,2,4- triazole.
  • the present compounds of formula (I) are prepared by known methods, for example, as disclosed in U.S. Patent Specification No. 4,734,209, the disclosure of which is hereby incorpo- rated by reference.
  • the base fluids in accordance with the invention utilize mineral oil based fluids (API Group I, II and III), poly- -olefins - PAOs (API Group IV), esters (API Group V), other synthetic fluids, natural oils that are animal or vegetable in origin, and mixtures thereof.
  • the base fluids are of suitable viscosity for utilization in engine oil applications.
  • the present compounds of formula (I) are employed at concentrations of about 0.01 to about 1.0% by weight, based on the weight of the formulat-fd engine oil.
  • the compounds of formula (I) are present from about 0.02 to about 0.5 weight percent; for example, from about 0.03 to about 0.3 weight percent; for example, from about 0.01 to about 0.5 or from about 0.01 to about 0.3 weight percent; for example from about 0.02 to about 1.0 or from about 0.02 to about 0.3 weight percent; for example, from about 0.03 to about 1.0 or from about 0.03 to about 0.5 weight percent.
  • Suitable antioxidants of component (c) are selected from:
  • Alkylated monophenols for example 2,6-di-tert-butyl-4-methylphenol, 2-butyl-4,6-di- methylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di- tert-butyl-4-iso-butylphenol, 2,6-di-cyclopentyl-4-methylphenol, 2-(a-methyl-cyclo- hexyl)-4,6-dimethylphenol, 2,6-di-octadecyl-4-methylphenol, 2,4,6-tri-cyclo-hexylphe- nol, 2,6-di-tert-butyl-4-methoxymethyIphenol, linear or side chain-branched nonylphe- nols, for example 2,6-di-nonyl-4-methylphenol, 2,4-dimethyl-6-(1 '-branche
  • Alkylthiomethylphenols for example 2,4-di-octylthiomethyl-6-tert-butylphenol, 2,4-di- octylthiomethyl-6-methylphenol, 2,4-di-octylthiomethyl-6-ethylphenol or 2,6-di-dode- cyIthiomethyl-4-nonylphenol
  • Hydroquinones and alkylated hydroquinones for example 2,6-di-tert-butyl-4-methoxy- phenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4- octadecyloxyphenol, 2,6-di-tert-butyl-hydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyphenyl stearate or bis(3,5-di-tert-butyl-4-hydroxyphenyl) adipate
  • vitamin E tocopherols, for example -, ⁇ -, ⁇ - or ⁇ -tocopherol or mixtures thereof (vitamin E)
  • Hydroxylated thiodiphenyl ethers for example 2,2'-thiobis(6-tert-butyl-4-methylphe- nol), 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) or 4,4'-bis(2,6-di- methyl-4-hydroxyphenyl) disulfide
  • 2,2'-thiobis(6-tert-butyl-4-methylphe- nol 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
  • 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-( -methyl- cyclohexyl)-phenol), 2,2'-methylenebis(4-methyl-6-cyclohexylphenol), 2,2'-methyIene- bis(6-nonyl-4-methylphenol), 2,2'-methylenebis(4,6-di-tert-butylphenol), 2,2'-ethyli- denebis(4,6-di-tert-butylphenol), 2,2'-ethylidenebis(6-tert-butyl-4-isobutylphenol), 2,2'- methylenebis(6-(a-methylbenzyl)-4-nonylphenol), 2,2'-methylene-bis( ⁇ , -d
  • O- N- and S-benzyl compounds for example S. ⁇ .S'. ⁇ '-tetra-tert-butyl ⁇ '-dihydroxy- dibenzyl ether, octadecyl 4-hydroxy-3,5-dimethylbenzylmercaptoacetate, tridecyl 4- hydroxy-3,5-di-tert-butylbenzylmercaptoacetate, tris(3,5-di-tert-butyl)amine, bis(4-tert- butyl-3-hydroxy-2,6-dimethylbenzyl)dithioterephthalate, bis(3,5-di-tert-butyl-4-hy- droxybenzyl) sulfide or isooctyl 3,5-di-tert-butyl-4-hydroxy-benzylmercaptoacetate
  • Hydroxybenzylated malonates for example dioctadecyl 2,2-bis(3,5-di-tert-butyl-2-hy- droxybenzyl)malonate, dioctadecyl 2-(3-tert-butyl-4-hydroxy-5-methylbenzyl)-malo- nate, di-dodecyl mercaptoethyl-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-malonate or di(4-(1 , 1 ,3,3-tetramethylbutyl)phenyl)-2,2-bis(3,5-di-tert-butyl-4-hydroxyben- zyl)malonate
  • Aromatic hydroxybenzyl compounds for example 1 ,3,5-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 or 2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenoI
  • Triazine compounds for example 2,4-bisoctylmercapto-6-(3,5-di-tert-butyl-4- hydroxyanilino)-1 ,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyani- lino)-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) isocyanurate,
  • Benzylphosphonates for example dimethyl 2,5-di-tert-butyl-4-hydroxybenzyl- phosphonate, diethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl 3,5- di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl 5-tert-butyl-4-hydroxy-3-me- thylbenzylphosphonate or the calcium salt of the monoethyl ester of 3,5-di-tert-butyl- 4-hydroxybenzylphosphonic acid
  • Amine-type antioxidants for example N.N'-diisopropyl-p-phenylenediamine, N,N'-di- sec-butyl-p-phenylenediamine, N,N , -bis(1 ,4-dimethylpentyl)-p-phenylenediamine, N,N'-bis(1-ethyl-3-methyl-pentyl)-p-phenylenediamine, N,N'-bis(1-methyl-heptyl)-p- phenylendiamine, N.N'-dicyclohexyl-p-phenylenediamine, N.N'-diphenyl-p-phenylene- diamine, N,N'-di-(naphth-2-yl)-p-phenylenediamine, N-isopropyl-N'-phenyl-p-phenyl- enediamine, N-(1 ,3-dimethylbutane
  • p.p'-di-tert-octyidiphenyl-amine 4-n-butyIaminophenol, 4-butyrylaminophenol, 4-nonanoylaminophenol, 4-dodecanoylaminophenol, 4-octa- decanoylaminophenol, di-(4-methoxyphenyl)-amine, 2,6-di-tert-butyl-4-dimethyl- amino-methyl-phenol, 2,4'-diamino-diphenylmethane, 4,4'-diamino-diphenylmethane, N.N.N'.N'-tetramethyW ⁇ '-diamino-diphenylmethane, 1 ,2-di-((2-methyl-phenyl)-ami- no)-ethane, 1 ,2-di-(phenylamino)propane, (o-tolyl)biguanide, di(4-(1 '
  • Suitable antiwear additives of component (c) are selected from:
  • Dihydrocarbyl dithiophosphate metal salts where the metal is aluminum, lead, tin manganese, cobalt, nickel, zinc or copper, but most often zinc.
  • the zinc salt (zinc dialkyl dithiophosphate) is represented as
  • R and R' are independently represent CrCaoalkyl, C 3 -C 20 alkenyl, C 5 -C 12 cyclo- alkyl, C 7 -C 13 aralkyl or C 6 -C ⁇ 0 aryl, for example R and R' are independently C r C 12 alkyl and
  • Sulfur- and/or phosphorus- and/or halogen-containing compounds such as sulfurized olefins and vegetable oils, tritolyl phosphate, tricresyl phosphate, chlorinated paraf- fins, alkyl and aryl di- and trisulf ides, amine salts of mono- and dialkyl phosphates, amine salts of methylphosphonic acid, diethanolaminomethyltolyltriazole, di(2-ethyl- hexyl)-aminomethyltolyltriazole, derivatives of 2,5-dimercapto-1 ,3,4-thiadiazole, ethyl ((bisisopropyloxyphosphinothioyl)thio)propionate, triphenyl thiophosphate (triphenyl phosphorothioate), tris(alkylphenyl) phosphorothioates and mixtures thereof (for ex- ample tris(isononylphen
  • Mannich bases that are condensation reaction products of a high molecular weight phenol, an alkylene polyamine and an aldehyde such as formaldehyde
  • Succinic-based dispersants that are reaction products of a olefin polymer and suc- cinic acylating agent (acid, anhydride, ester or halide) further reacted with an organic hydroxy compound and/ or an amine and 3) High molecular weight amides and esters such as reaction products of a hydrocarbyl acylating agent and a polyhydric aliphatic alcohol (such as glycerol, pentaerythritol or sorbitol).
  • Ashless (metal-free) polymeric materials that usually contain an oil soluble high molecular weight backbone linked to a polar functional group that associates with particles to be dispersed are typically used as dispersants.
  • Commonly used hydrocarbon backbone materials are olefin polymers and copolymers, i.e.- ethylene, propylene, butylene, isobutylene, styrene; there may or may not be further functional groups incorporated into the backbone of the polymer.
  • Polar materials such as amines, alcohols, amides or esters are attached to the backbone via a bridge.
  • Suitable detergents of component (c) are selected from: calcium, magnesium, barium, sodium or lithium salts of organic acids, for example sulphonates, alkylphenates, sulfurised al- kyl phenates, carboxylates, salicylates, phosphonates, thiophosphonates and phosphinates.
  • the salts may be neutral or may be overbased by, for example, metal hydroxides or carbon- ates.
  • Suitable antifoam additives of component (c) are selected from: silicone oils, polysiloxanes and polyethylene glycol ethers.
  • Suitable viscosity index improvers of component (c) are selected from: polyisobutylene, copolymers of ethylene and propylene, polyacrylates, polymethacrylates, vinylpyrrolidone/ methacrylate copolymers, polyvinylpyrrolidones, polybutenes, olefin copolymers, styrene/ acrylate copolymers, styrene/isoprene copolymers, styrene/isobutadiene copolymers, isoprene/ butadiene copolymers and polyethers.
  • Suitable copper passivators of component (c) are selected from:
  • Benzotriazoles and their derivatives for example 4- or 5-alkylbenzotriazoles (e.g. tolutriazole) and derivatives thereof, 4,5,6,7-tetrahydrobenzotriazole, 5,5'-methylene- bisbenzotriazole; Mannich bases of benzotriazole or tolutriazole, such as 1-(di(2- ethylhexyl)aminomethyl)tolutriazole and 1 -(di-(2-ethylhexyl)aminomethyl)-benzotria- zole; alkoxyalkylbenzotriazoles, such as 1-(nonyloxymethyl)-benzotriazole, 1-(1-bu- toxyethyl)-benzotriazole or 1 -(1 -cyclohexyloxybutyl)-tolutriazole 2) Imidazole derivatives, for example 4,4'-methylenebis(2-undecyl-5-
  • Amino compounds for example salicylidenepropylenediamine, salicylaminoguanidine or salts thereof.
  • Suitable rust inhibitors of component (c) are selected from:
  • Nitrogen-containing compounds selected from: i) Primary, secondary or tertiary aliphatic or cycloaliphatic amines and amine salts of organic and inorganic acids, for example oil-soluble alkylammonium carboxylates, and also 1-(N,N-bis(2-hydroxyethyl)amino)-3-(4-nonylphenoxy)propan-2-ol, or ii) Heterocyclic compounds, for example: substituted imidazolines or oxazolines, for example, 2-heptadecenyl-1 -(2-hydroxyethyl)-imidazoline
  • Phosphorus-containing compounds for example amine salts of phosphoric acid, phosphoric acid partial esters or phosphonic acid partial esters or zinc dialkyldithio- phosphates
  • Sulfur-containing compounds for example barium dinonylnaphthalene-sulfonates, calcium petroieumsulfonates, alkylthio-substituted aliphatic carboxylic acids, esters of aliphatic 2-sulfocarboxylic acids or salts thereof, and
  • Glycerol derivatives for example glycerol monooleate, 1 -(alkylphenoxy)-3-(2-hy- droxyethyl)glycerols, 1-(alkylphenoxy)-3-(2,3-dihydroxypropyl)glycerols or 2-car- boxyalkyl-1 ,3-dialkylglycerols.
  • Suitable pour point depressants of component (c) are selected from polymethacrylates and alkylated naphthalene derivatives.
  • Suitable demulsifiers of component (c) are selected from polyetherpolyols and dinonylnaph- thalenesulfonates.
  • Suitable friction modifiers of component (c) are selected from fatty acids and their derivatives, e.g. natural esters of fatty acids such as glycerol monooleate, amides, imides and amines, e.g. oleylamine, sulfur containing organomolybdenum dithiocarbamates, sulfur- phosphorus containing organomolybdenum dithiophosphates, sulfur-nitrogen containing organomolybdenum compounds based on dispersants, molybdenum carboxylate salts, molyb- denum-amine complexes, molybdenum amine/alcohol/amid complexes and molybdenum cluster compounds, Teflon® and molybdenum disulfide.
  • natural esters of fatty acids such as glycerol monooleate, amides, imides and amines, e.g. oleylamine
  • sulfur containing organomolybdenum dithiocarbamates sulfur-
  • Additives that are aggressive towards lead are antioxidants, antiwear additives, detergents, copper passivators or friction modifiers, such as sulfur-containing antioxidants, sulfur-containing antiwear additives, sulfur-containing copper passivators or vegetable oil-derived friction modifiers.
  • antioxidants such as sulfur-containing antioxidants, sulfur-containing antiwear additives, sulfur-containing copper passivators or vegetable oil-derived friction modifiers.
  • sulfur-containing antioxidants aggressive towards lead are phenothiazine antioxidants.
  • the additives of component (c) are added in the customary amounts in each case in the range from about 0.01 to about 10.0% by weight, based on the engine oil composition.
  • the compounds of the formula (I) can be introduced into the engine oil in manners known per se.
  • the compounds are readily soluble in oils. It is also possible to prepare a so-called additive master batch (package) that can be diluted with the corresponding fluid to use con- centrations at the rate at which they are required.
  • the compounds of formula (I) may be introduced as part of an additive package.
  • the engine oils comprising components (a) and (c) do not meet or only come close to meeting the lead corrosion specification defined in ASTM D 4485 as measured by ASTM D 6594. That is, the engine oils comprising components (a) and (c), in the absence of the present compounds of formula (I), have in excess of about 100 ppm, about 120 ppm, about 150 ppm, about 180 ppm, or about 210 ppm as measured by ASTM D 6594.
  • the invention also relates to a method of preventing corrosion of lead parts that are in the presence of an engine oil composition
  • an engine oil composition comprising (a) a base fluid and (c) at least one oil additive that is aggressive towards lead and which is selected from the group consisting of antioxidants, antiwear additives, dispersants, detergents, antifoam additives, viscosity index improvers, copper passivators, rust inhibitors, pourpoint depressants, demulsifiers and friction modifiers, which method comprises incorporating into said engine oil composition (b) at least one compound of the formula (I), where in the absence of component (b), the engine oil composition exceeds about 100 ppm lead as measured according to test ASTM D 6594.
  • a fully formulated, non-corrosive engine oil is used as the base formulation for this example.
  • a friction modifier/corrosion inhibitor GMO
  • a sulfur-containing anti wear/extreme pressure additive diternonyltrisulfide (TPS ® 27)
  • TPS ® 27 diternonyltrisulfide
  • Both the GMO and TPS 27 add to the corrosion of the base formulation making it unsuitable for use.
  • IRGAMET 30 reduces the corrosion significantly to very acceptable levels.

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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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)
PCT/EP2003/008352 2002-08-06 2003-07-29 Engine oils comprising lead corrosion-inhibitors Ceased WO2004015043A1 (en)

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BR0313248-0A BR0313248A (pt) 2002-08-06 2003-07-29 Ëleos de motor compreendendo inibidores de corrosão de chumbo
EP03784098A EP1532232A1 (en) 2002-08-06 2003-07-29 Engine oils comprising lead corrosion-inhibitors
CA002494639A CA2494639A1 (en) 2002-08-06 2003-07-29 Engine oils comprising lead corrosion-inhibitors
AU2003253351A AU2003253351B2 (en) 2002-08-06 2003-07-29 Engine oils comprising lead corrosion-inhibitors
JP2004526808A JP2005534782A (ja) 2002-08-06 2003-07-29 鉛の腐食防止剤を含有するエンジンオイル
MXPA05001129A MXPA05001129A (es) 2002-08-06 2003-07-29 Aceites para motor que comprenden inhibidores de corrosion de plomo.

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GB2444845A (en) * 2006-12-11 2008-06-18 Afton Chemical Corp Lubricating compositions
US8236204B1 (en) 2011-03-11 2012-08-07 Wincom, Inc. Corrosion inhibitor compositions comprising tetrahydrobenzotriazoles solubilized in activating solvents and methods for using same
US8236205B1 (en) 2011-03-11 2012-08-07 Wincom, Inc. Corrosion inhibitor compositions comprising tetrahydrobenzotriazoles and other triazoles and methods for using same
WO2017030785A1 (en) * 2015-08-14 2017-02-23 Vanderbilt Chemicals, Llc Additive for lubricant compositions comprising an organomolybdenum compound, and a derivatized triazole
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CN100387696C (zh) * 2005-12-29 2008-05-14 上海交通大学 苯并三氮唑多硫化物极压抗腐蚀添加剂及其制备方法
GB2444845A (en) * 2006-12-11 2008-06-18 Afton Chemical Corp Lubricating compositions
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CN1675341A (zh) 2005-09-28
CA2494639A1 (en) 2004-02-19
KR20050032104A (ko) 2005-04-06
TW200413518A (en) 2004-08-01
EP1532232A1 (en) 2005-05-25
BR0313248A (pt) 2005-07-12
US20040038835A1 (en) 2004-02-26
AU2003253351A1 (en) 2004-02-25
JP2005534782A (ja) 2005-11-17

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