EP1290115A1 - Hydraulische flüssigkeiten mit verbessertem korrosionsschutz für buntmetalle - Google Patents
Hydraulische flüssigkeiten mit verbessertem korrosionsschutz für buntmetalleInfo
- Publication number
- EP1290115A1 EP1290115A1 EP01933972A EP01933972A EP1290115A1 EP 1290115 A1 EP1290115 A1 EP 1290115A1 EP 01933972 A EP01933972 A EP 01933972A EP 01933972 A EP01933972 A EP 01933972A EP 1290115 A1 EP1290115 A1 EP 1290115A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heterocyclic compounds
- motor vehicles
- weight
- brake fluids
- fluids
- 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.)
- Withdrawn
Links
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- 239000002184 metal Substances 0.000 title claims description 9
- 150000002391 heterocyclic compounds Chemical class 0.000 claims abstract description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 8
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- 239000000806 elastomer Substances 0.000 description 2
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- 150000004665 fatty acids Chemical class 0.000 description 2
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- POULHZVOKOAJMA-UHFFFAOYSA-N methyl undecanoic acid Natural products CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
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- 238000010992 reflux Methods 0.000 description 2
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 2
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
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- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000011593 sulfur Chemical group 0.000 description 1
- 229910052717 sulfur Chemical group 0.000 description 1
- 238000005494 tarnishing Methods 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 150000008523 triazolopyridines Chemical class 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000006000 trichloroethyl group Chemical group 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
- 125000004205 trifluoroethyl group Chemical group [H]C([H])(*)C(F)(F)F 0.000 description 1
- 125000004385 trihaloalkyl group Chemical group 0.000 description 1
- 125000004953 trihalomethyl group Chemical group 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Classifications
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- 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
- 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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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/78—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing boron
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
- C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
- C10M107/34—Polyoxyalkylenes
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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
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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
- C10M133/46—Imidazoles
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/085—Phosphorus oxides, acids or salts
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/024—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings having at least two phenol groups but no condensed ring
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/0406—Ethers; Acetals; Ortho-esters; Ortho-carbonates used as base material
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
- C10M2209/1045—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only used as base material
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
- C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only used as base material
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
- C10M2209/1065—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only used as base material
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
- C10M2209/1075—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106 used as base material
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
- C10M2209/1085—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified used as base material
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
- C10M2209/1095—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified used as base material
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/20—Containing nitrogen-to-oxygen bonds
- C10M2215/202—Containing nitrogen-to-oxygen bonds containing nitro groups
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- C10M2215/22—Heterocyclic nitrogen compounds
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/221—Six-membered rings containing nitrogen and carbon only
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
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- C10M2215/223—Five-membered rings containing nitrogen and carbon only
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- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
- C10M2215/224—Imidazoles
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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
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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
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/061—Esters derived from boron
- C10M2227/0615—Esters derived from boron used as base material
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- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/061—Esters derived from boron
- C10M2227/062—Cyclic esters
- C10M2227/0625—Cyclic esters used as base material
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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
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
Definitions
- the present invention relates to hydraulic fluids, in particular brake fluids for motor vehicles, with improved corrosion protection, which contain 0.005 to 0.5% by weight of one or 10 more heterocyclic compounds of the general formula I,
- R in each case independently of any other radicals R, denotes a hydrogen atom or a radical R 1 ,
- Ri each independently of other R 1 radicals present, alkyl, aryl, aralkyl, halogen, haloalkyl, optionally alkyl, aryl or aralkyl-substituted amino, a heterocyclic radical, cyano, carboxyl, alkoxycarbonyl, hydroxyl or alkoxyl, the abovementioned organic radicals for Ri each 1 to
- n 0, 1 or 2.
- Hydraulic fluids and in particular brake fluids 40 for motor vehicles are subject to very high requirements with regard to their chemical and physical properties.
- modern brake fluids are said to have high dry boiling points (Rüc boiling points, dry [Equilibrium reflux boiling point, "ERBP”]) and high wet boiling points (reflux boiling points, moist ["wet ERBP”]), but on the other hand also have a viscosity which changes only slightly within a wide temperature range.
- the hydraulic fluids and brake fluids for Kra t vehicles known in the prior art are still in need of improvement in this regard.
- the object was therefore to provide hydraulic liquids which meet the above-mentioned requirements for improved non-ferrous metal corrosion protection.
- Alkyl groups for R 1 are preferably linear or branched C 1 -C 20 -, in particular C 1 -C 8 -alkyl groups, for example methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl , tert.-butyl, n-pentyl, sec.-pentyl, iso-pentyl, neo-pentyl, n-hexyl, n-heptyl, n-octyl, 2-ethylhexyl, n-nonyl, iso-nonyl, n-decyl , iso-decyl, n-ündecyl, n-dodecyl, n-tridecyl, iso-tridecyl, n-tetradecyl, n-hexadecyl,
- R 1 can also be C 5 -C 8 -co-alkyl, such as cyclopentyl or cyclohexyl.
- R 1 can also mean unsaturated C 3 -C 20 -alkyl radicals, ie -alkenyl radicals, for example allyl, oleyl, linolyl or linolenyl.
- Aryl groups for R i are preferably C 6 - to C 20 -aryl groups, which can be substituted by C 1 -C 4 -alkyl radicals, for example phenyl, naphthyl, o-, m- or p-tolyl, o-, - or p-ethylphenyl or xylyl.
- Aralkyl groups for R 1 preferably have 7 to 20 C atoms.
- these are corresponding alkyl radicals which carry an optionally alkyl-substituted phenyl substituent. Examples include benzyl, 2-phenylethyl, 3-phenylpropyl, 4-phenylbutyl, o-, m- or p-methylbenzyl or o-, m- or p-ethylbenzyl.
- Halogen atoms for R 1 are in particular fluorine, chlorine, bromine and iodine.
- Haloalkyl groups for R 1 are preferably mono-, di- or tri-haloalkyl groups with 1 to 20, in particular 1 to 8, carbon atoms.
- Mono-, di- and trihalomethyl groups such as fluoromethyl, chloromethyl, bromomethyl, difluoromethyl, dichloromethyl, dibroromethyl, fluorochloromethyl, chlorobromomethyl, fluorobromomethyl, trifluoroethyl, trichloroethyl, tribromomethyl, fluorodichloromethyl, difluorochloromethyl are particularly preferred. Chlorodibromomethyl, dichlorobromomethyl, difluorobromomethyl or fluorochlorobromomethyl.
- alkyl, aryl or aralkyl-substituted amino for RI denotes in particular the groups -NH, -NHR 2 and -N (R 2 ), where R 2 independently of one another has the meanings given above for alkyl, aryl or aralkyl in the radical R 1 , Examples of this include, in addition to unsubstituted amino, methylamino, dirnethylamino, ethyl ino, diethylamino, butylamino, dibutylamino, phenylamino or benzylamino.
- Heterocyclic radicals for R 1 are preferably those organic radicals with up to 30 C atoms which contain at least one five-, six- or seven-membered ring system with one to three heteroatoms from the group consisting of oxygen, nitrogen and sulfur. Such heterocyclic radicals can furthermore contain aliphatic and / or isocyclic and / or aromatic structural elements and / or further heteroatoms.
- Examples include furanyl, thiophenyl, pyrrolidinyl, pyrrolinyl, pyrrolyl, oxazolyl, thiazolyl, pyrazolyl, imidazolyl, triazolyl, pyranyl, piperidinyl, morpholinyl, pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, triazinyl, benzolimidazyl, indolyl zolyl, furfuryl (2-furanylmethyl), furfurylamino and histamino [2- (4-imidazolyl) ethylamino].
- Alkyl radicals in the alkoxycarbonyl for R 1 are preferably the same radicals as described above for R 1 itself, but alkoxycarbonyl in particular denotes Ci to C 4 alkoxycarbonyl groups such as methoxycarbonyl, ethoxycarbonyl or n-butoxycarbonyl.
- Alkyl radicals in the alkoxyl for R 1 are preferably the same radicals as described above for R 1 itself, for example methoxyl, ethoxyl, n-propoxyl, iso-propoxyl, n-butoxyl, sec-butoxyl, iso-butoxyl, tert.- Butoxyl, n-pentoxyl, sec.
- -Pentoxyl iso-pentoxyl, neo-pentoxyl, n-hexoxyl, n-heptoxyl, n-octoxyl, 2-ethylhexoxyl, n-nonoxyl, iso-nonoxyl, n-decoxyl, iso-decoxyl, n-undecoxyl, n-dodecoxyl , n-tridecoxyl, iso-tridecoxyl, n-tetradecoxyl, n-hexadecoxyl, n-octadecoxyl or eicosoxyl.
- heterocyclic compounds of the general formula I are known substances which are commercially available or can be synthesized by customary production methods.
- WO 95/10588 describes purine derivatives as additives for preventing the tarnishing of silver in bleaching detergent and cleaning agent formulations, in particular dishwashing agents.
- WO 96/20295 discloses the use of heterocyclic compounds of the type of the general formula I as aqueous preflux coatings for the protection against corrosion of copper and copper alloys in the production of printed circuit boards.
- a preferred embodiment of the present invention are brake fluids for motor vehicles which contain 0.005 to 0.5% by weight of one or more of the heterocyclic compounds I described. Both for hydraulic fluids and for brake fluids for motor vehicles, preferred contents of the compounds I are 0.005 to 0.10% by weight, in particular 0.005 to 0.06% by weight, in each case based on the total mass of the hydraulic fluid or brake fluid.
- the presence of the heterocyclic compounds I ensures in an excellent manner that the hydraulic fluid or brake fluid for motor vehicles meets the requirements mentioned at the outset and that, in particular, corrosion protection for non-ferrous metals such as copper and its alloys is improved significantly compared to the prior art .
- Further advantages of the hydraulic fluids and brake fluids for motor vehicles according to the invention are their favorable low-temperature viscosity, generally good corrosion behavior, good water compatibility, a gentle pH value, good low-temperature, high-temperature and oxidation stability and good chemical stability, a favorable one Behavior towards elastomers and rubber as well as good lubrication behavior.
- the brake fluids for motor vehicles according to the invention also contain, in addition to the heterocyclic compounds I, 0.1 to 97% by weight, in particular 30 to 97% by weight, especially 50 to 97% by weight, each based on the total mass of the brake fluid, one or more polyglycol ethers and / or their boric acid esters.
- Suitable polyglycol ethers are especially ethylene glycol monoalkyl ethers with up to 6 ethylene oxide units and with up to 4 carbon atoms in the alkyl radical. Ethylene glycol or propylene glycol dialkyl ethers with up to 6 alkylene oxide units and each with up to 4 carbon atoms in the alkyl radicals are also suitable.
- Suitable boric acid esters of the polyglycol ethers mentioned or of other polyethers are in particular in the documents EP-B 013 925 (cyclic - see bis-boric acid ester), DE-C 28 04 535 (nitrogen-containing boric acid esters), DE-A 24 38 038 (boric acid-alkylene glycol) Monoalkyl ether esters) and DE-B 17 68 933 (tris-alkoxyalkyl borate).
- the brake fluids according to the invention for motor vehicles can also contain, as the main component, those based on carboxylic acid esters, mineral oils or silicone oils.
- the brake fluids for motor vehicles according to the invention contain, in addition to the heterocyclic compounds I, 0.1 to 50% by weight, in particular 1 to 40% by weight, especially 5 to 30% by weight, in each case on the total mass of the brake fluid, one or more polyglycols.
- Suitable polyglycols are above all higher-boiling reaction products of ethylene oxide and / or propylene oxide and / or butylene oxide with water or diols, in particular corresponding reaction products of mixtures of ethylene oxide and propylene oxide with water are used.
- the number of alkylene oxide units in such polyglycols is normally 2 to 10.
- the effect of these high-boiling polyglycols is that of a lubricant, which is essentially due to an improvement in the temperature-viscosity behavior.
- the polyglycols give the low viscosity polyglycol ethers sufficient viscosity at high temperatures and thus ensure adequate lubrication. Adequate lubrication is therefore necessary in the components of the motor vehicle brake system, since rubber or elastomers on metal have to slide as wear-free as possible.
- the brake fluids for motor vehicles according to the invention also contain, in addition to the heterocyclic compounds I, 0.005 to 10% by weight, in particular 0.02 to 6% by weight, especially 0.05 to 4% by weight, in each case based on the total mass of the brake fluid, one or more additional corrosion inhibitors.
- Corrosion inhibitors in brake fluids have the task of preventing the destruction of metallic materials caused by corrosion.
- Additional corrosion inhibitors are, in particular, alkali metal salts of phosphoric acid and phosphorous acid, fatty acids such as caprylic, lauric, palmitic, stearic or oleic acid and their alkali metal salts, esters of phosphoric acid and phosphorous acid such as ethyl phosphate, dimethyl phosphate, isopropyl phosphate , Di-isopropyl phosphate, butyl phosphite or dimethyl phosphite, optionally ethoxylated mono- and dialkylamines and their salts with mineral and fatty acids, for example Butylamine, hexylamine, octylamine, isononyla in, oleylamine, dipropylamine, diisopropyla in or dibutylamine, optionally ethoxylated alkanolamines
- the brake fluids for motor vehicles according to the invention contain, in addition to the heterocyclic compounds I, 0.005 to 0.5% by weight of benzimidazole, tolutriazole, benzotriazole and / or hydrogenated tolutriazole as additional corrosion inhibitors.
- Further components and auxiliaries in the brake fluids for motor vehicles according to the invention can be customary antioxidants such as, for example, phenothiazine and / or those based on phenol, for example bisphenol A, and customary defoamers.
- brake fluids according to the invention can in the German patent application Az. 199 18 199.3 contain cyclic carboxylic acid derivatives which are suitable as components for lowering the low-temperature viscosity in the presence of water.
- DOT 5.1 brake fluid BF 1 (ERBP: 263 ° C, wet ERBP: 181 ° C, kinematic viscosity at -40 ° C: 850 cSt) with 0.05% by weight tolutriazole as a non-ferrous metal corrosion inhibitor were compared for this purpose, the brake fluids BF 2, BF 3, BF 4, BF 5, BF 6, BF 7, BF 8 and BF 9 tested.
- the motor vehicle brake fluids used had the following compositions:
- BF 7 0.01% by weight of purine or BF 8 0.01% by weight of 6-methoxypurine or
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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)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Lubricants (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10026010A DE10026010A1 (de) | 2000-05-25 | 2000-05-25 | Hydraulische Flüssigkeiten mit verbessertem Korrosionsschutz für Buntmetalle |
| DE10026010 | 2000-05-25 | ||
| PCT/EP2001/005550 WO2001090281A1 (de) | 2000-05-25 | 2001-05-16 | Hydraulische flüssigkeiten mit verbessertem korrosionsschutz für buntmetalle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1290115A1 true EP1290115A1 (de) | 2003-03-12 |
Family
ID=7643588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01933972A Withdrawn EP1290115A1 (de) | 2000-05-25 | 2001-05-16 | Hydraulische flüssigkeiten mit verbessertem korrosionsschutz für buntmetalle |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20030141482A1 (de) |
| EP (1) | EP1290115A1 (de) |
| JP (1) | JP2003534445A (de) |
| KR (1) | KR20020093152A (de) |
| AU (1) | AU2001260304A1 (de) |
| BR (1) | BR0111037A (de) |
| CA (1) | CA2409263A1 (de) |
| DE (1) | DE10026010A1 (de) |
| NO (1) | NO20025639L (de) |
| WO (1) | WO2001090281A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10117647A1 (de) * | 2001-04-09 | 2002-10-17 | Basf Ag | Hydraulische Flüssigkeiten mit verbessertem Korrosionsschutz |
| WO2004074547A2 (en) * | 2003-02-19 | 2004-09-02 | Intellectual Concepts, Llc | Lower alkyl carboxylic acid moiety-containing anti- corrosion compositions and methods of use. |
| WO2008142795A1 (ja) | 2007-05-24 | 2008-11-27 | Chiyoda Chemical Co., Ltd. | 機能性流体 |
| CN103013629A (zh) * | 2011-09-28 | 2013-04-03 | 天津博克尼科技发展有限公司 | 一种合成型汽车制动液 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6704601A (de) * | 1966-04-06 | 1967-10-09 | ||
| US3637794A (en) * | 1967-04-13 | 1972-01-25 | Olin Mathieson | Borate esters prepared by successive reactions of boric acid with glycol monoethers and polyols |
| DE2804535C2 (de) * | 1978-02-03 | 1984-04-26 | Alfred Teves Gmbh, 6000 Frankfurt | Hydraulische Flüssigkeiten |
| US4367152A (en) * | 1981-07-02 | 1983-01-04 | Exxon Research And Engineering Co. | Selected heteroaromatic nitrogen compounds as antioxidant/metal deactivators/electrical insulators in lubricating oils and petroleum liquid fuels |
| JPS5911397A (ja) * | 1982-06-09 | 1984-01-20 | Idemitsu Kosan Co Ltd | 疲労寿命改良潤滑剤 |
| US4501677A (en) * | 1983-11-02 | 1985-02-26 | Exxon Research & Engineering Co. | Heterocyclic nitrogen compounds--organometallic salt complexes as corrosion inhibitors in lubricating oils |
| US5308517A (en) * | 1993-02-22 | 1994-05-03 | Exxon Research & Engineering Co. | Ashless lube additives containing complexes of alkoxylated amines, dihydrocarbyldithiophosphoric acid, and adenine |
| US5290463A (en) * | 1993-02-22 | 1994-03-01 | Exxon Research & Engineering Co. | Lubricant composition containing complexes of alkoxylated amine, hydrocarbylsalicylic acid and adenine |
| US5290462A (en) * | 1993-02-22 | 1994-03-01 | Exxon Research & Engineering Co. | Lubricant composition containing complexes of alkoxylated amine, hydrocarbylsulfonic acid and adenine |
| KR100402899B1 (ko) * | 1994-12-23 | 2004-06-12 | 쿡손 그룹 피엘씨 | 구리또는구리합금의부식방지법 |
-
2000
- 2000-05-25 DE DE10026010A patent/DE10026010A1/de not_active Withdrawn
-
2001
- 2001-05-16 CA CA002409263A patent/CA2409263A1/en not_active Abandoned
- 2001-05-16 KR KR1020027015253A patent/KR20020093152A/ko not_active Withdrawn
- 2001-05-16 EP EP01933972A patent/EP1290115A1/de not_active Withdrawn
- 2001-05-16 WO PCT/EP2001/005550 patent/WO2001090281A1/de not_active Ceased
- 2001-05-16 AU AU2001260304A patent/AU2001260304A1/en not_active Abandoned
- 2001-05-16 US US10/296,055 patent/US20030141482A1/en not_active Abandoned
- 2001-05-16 BR BR0111037-3A patent/BR0111037A/pt not_active IP Right Cessation
- 2001-05-16 JP JP2001587080A patent/JP2003534445A/ja not_active Withdrawn
-
2002
- 2002-11-22 NO NO20025639A patent/NO20025639L/no not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0190281A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2409263A1 (en) | 2002-11-19 |
| NO20025639L (no) | 2002-11-25 |
| DE10026010A1 (de) | 2001-11-29 |
| US20030141482A1 (en) | 2003-07-31 |
| KR20020093152A (ko) | 2002-12-13 |
| JP2003534445A (ja) | 2003-11-18 |
| NO20025639D0 (no) | 2002-11-22 |
| BR0111037A (pt) | 2003-06-10 |
| WO2001090281A1 (de) | 2001-11-29 |
| AU2001260304A1 (en) | 2001-12-03 |
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