DE69422075T2 - Hydraulic fluid composition - Google Patents
Hydraulic fluid compositionInfo
- Publication number
- DE69422075T2 DE69422075T2 DE69422075T DE69422075T DE69422075T2 DE 69422075 T2 DE69422075 T2 DE 69422075T2 DE 69422075 T DE69422075 T DE 69422075T DE 69422075 T DE69422075 T DE 69422075T DE 69422075 T2 DE69422075 T2 DE 69422075T2
- Authority
- DE
- Germany
- Prior art keywords
- ether
- hydraulic fluid
- fluid composition
- linear
- amine
- 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.)
- Expired - Fee Related
Links
- 239000000203 mixture Substances 0.000 title claims description 54
- 239000012530 fluid Substances 0.000 title claims description 35
- -1 boric acid ester Chemical class 0.000 claims description 25
- 239000000654 additive Substances 0.000 claims description 10
- 238000009835 boiling Methods 0.000 claims description 8
- 239000004327 boric acid Substances 0.000 claims description 7
- 150000003254 radicals Chemical class 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 5
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 4
- 125000003158 alcohol group Chemical group 0.000 claims description 4
- 125000001033 ether group Chemical group 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- WCYWZMWISLQXQU-UHFFFAOYSA-N methyl Chemical group [CH3] WCYWZMWISLQXQU-UHFFFAOYSA-N 0.000 claims description 3
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 16
- 150000001412 amines Chemical class 0.000 description 8
- 230000002401 inhibitory effect Effects 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 230000003472 neutralizing effect Effects 0.000 description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 description 4
- VBCFHWSPNHEYGE-UHFFFAOYSA-N 2,3,4-trimethylquinoline Chemical compound C1=CC=C2C(C)=C(C)C(C)=NC2=C1 VBCFHWSPNHEYGE-UHFFFAOYSA-N 0.000 description 3
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 3
- 239000002174 Styrene-butadiene Substances 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 125000001841 imino group Chemical group [H]N=* 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 150000002924 oxiranes Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 2
- COBPKKZHLDDMTB-UHFFFAOYSA-N 2-[2-(2-butoxyethoxy)ethoxy]ethanol Chemical compound CCCCOCCOCCOCCO COBPKKZHLDDMTB-UHFFFAOYSA-N 0.000 description 1
- WFSMVVDJSNMRAR-UHFFFAOYSA-N 2-[2-(2-ethoxyethoxy)ethoxy]ethanol Chemical compound CCOCCOCCOCCO WFSMVVDJSNMRAR-UHFFFAOYSA-N 0.000 description 1
- WVRNUXJQQFPNMN-VAWYXSNFSA-N 3-[(e)-dodec-1-enyl]oxolane-2,5-dione Chemical compound CCCCCCCCCC\C=C\C1CC(=O)OC1=O WVRNUXJQQFPNMN-VAWYXSNFSA-N 0.000 description 1
- FAXDZWQIWUSWJH-UHFFFAOYSA-N 3-methoxypropan-1-amine Chemical compound COCCCN FAXDZWQIWUSWJH-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910001964 alkaline earth metal nitrate Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical class OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- ABVVEAHYODGCLZ-UHFFFAOYSA-N tridecan-1-amine Chemical compound CCCCCCCCCCCCCN ABVVEAHYODGCLZ-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M133/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M133/08—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
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- 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
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- C10M145/26—Polyoxyalkylenes
- C10M145/28—Polyoxyalkylenes of alkylene oxides containing 2 carbon atoms only
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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
- C10M2207/28—Esters
- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
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Description
Die vorliegende Erfindung bezieht sich auf eine hydraulische Flüssigkeitszusammensetzung, und insbesondere auf eine Bremsflüssigkeit-Zusammensetzung.The present invention relates to a hydraulic fluid composition, and more particularly to a brake fluid composition.
Die Herstellung von hydraulischen Flüssigkeiten auf Basis von Glykolethern und/oder auf Basis von Borsäureestern von Glykolethern ist bekannt. Diese hydraulischen Flüssigkeiten enthalten besonders oft Additive, insbesondere die Korrosion inhibierenden oder die Oxidation inhibierenden Additive, und ein neutralisierendes Mittel.The production of hydraulic fluids based on glycol ethers and/or boric acid esters of glycol ethers is known. These hydraulic fluids often contain additives, in particular corrosion-inhibiting or oxidation-inhibiting additives, and a neutralizing agent.
Die Herstellung von hydraulischen Flüssigkeiten, enthaltend Amine als Korrosion-inhibierende Additive und/oder als neutralisierende Mittel, ist bekannt. Insbesondere ist die Verwendung von Alkanolaminen gemäß der Europäischen Patentanmeldung EP-A-454 110 und der US-Patentschrift 3 711 410 bekannt. Es wurde jedoch beobachtet, daß diese Alkanolamine es nicht ermöglichen, hydraulische Flüssigkeiten von hohem Siedepunkt, welche gleichzeitig eine Anzahl von spezifischen Eigenschaften besitzen, herzustellen. Insbesondere ermöglichen sie es nicht, hydraulische Flüssigkeiten herzustellen, die eine gewünschte Viskosität und gegebenenfalls eine gewünschte Flüchtigkeit als eine Funktion des Siedepunkts aufweisen, wenn sie auch außerdem eine gute Verträglichkeit mit Elastomeren vom Styrol-Butadien-Kautschuk-Typ (SBR-Typ), einen basischen pH-Wert und gute Korrosion-inhibie rende Eigenschaften haben.The preparation of hydraulic fluids containing amines as corrosion-inhibiting additives and/or as neutralizing agents is known. In particular, the use of alkanolamines is known according to European patent application EP-A-454 110 and US patent specification 3,711,410. However, it has been observed that these alkanolamines do not make it possible to prepare hydraulic fluids with a high boiling point which simultaneously possess a number of specific properties. In particular, they do not make it possible to prepare hydraulic fluids which have a desired viscosity and, optionally, a desired volatility as a function of the boiling point, although they also have good compatibility with elastomers of the styrene-butadiene rubber type (SBR type), a basic pH and good corrosion-inhibiting properties. have stimulating properties.
Die vorliegende Erfindung betrifft eine hydraulische Flüssigkeitszusammensetzung von hohem Siedepunkt, welche es möglich macht, die oben erwähnten Probleme zu lösen.The present invention relates to a high boiling point hydraulic fluid composition which makes it possible to solve the above-mentioned problems.
Der Gegenstand der vorliegenden Erfindung ist daher eine hydraulische Flüssigkeitszusammensetzung, basierend auf zumindest einem Glykolether oder auf zumindest einem Borsäureester eines Glykolethers, oder auf einer Mischung der beiden, dadurch gekennzeichnet, daß sie als Additiv zumindest ein Ether-Amin mit einem Molekulargewicht zwischen 120 und 300 enthält, und die nachfolgende Formel aufweist: The subject of the present invention is therefore a hydraulic fluid composition based on at least one glycol ether or on at least one boric acid ester of a glycol ether, or on a mixture of the two, characterized in that it contains as an additive at least one ether-amine with a molecular weight between 120 and 300, and has the following formula:
in welcher R&sub3; ein linearer oder verzweigter Rest ist, der zumindest eine Ether-funktionelle Gruppe und keine Alkohol-funktionelle Gruppe hat, R ein Methylrest oder ein Wasserstoffatom ist, p eine ganze Zahl mit einem Wert von 1 bis 3 bedeutet und q eine ganze Zahl mit einem Wert von 0 bis 2 ist.in which R₃ is a linear or branched radical having at least one ether functional group and no alcohol functional group, R is a methyl radical or a hydrogen atom, p is an integer having a value from 1 to 3 and q is an integer having a value from 0 to 2.
Gemäß der vorliegenden Erfindung enthält die Zusammensetzung ein Ether-Amin, verwendet im wesentlichen als ein Korrosion-inhibierendes Additiv und/oder ein neutralisierendes Mittel. Dieses Ether-Amin hat ein Molekulargewicht zwischen 120 und 300. Wenn ein Ether-Amin verwendet wird, welches ein niedrigeres Molekulargewicht hat, wird eine Zusammensetzung erhalten, welche flüchtig ist und einen niedrigen Siedepunkt aufweist. Wenn ausserdem ein Ether-Amin verwendet wird, welches ein größeres Molekulargewicht hat, wird eine Zusammensetzung erhalten, welche eine übermäßig hohe Viskosität besitzt. Das Molekulargewicht von dem Ether-Amin ist bevorzugterweise von 150 bis 250.According to the present invention, the composition contains an ether amine used essentially as a corrosion-inhibiting additive and/or a neutralizing agent. This ether amine has a molecular weight between 120 and 300. If an ether amine having a lower molecular weight is used, a composition is obtained which is volatile and has a low boiling point. If, furthermore, an ether amine having a larger molecular weight is used, a composition is obtained which has an excessively high viscosity. The molecular weight of the ether amine is preferably from 150 to 250.
Gemäß der Erfindung muß das Ether-Amin einen Rest R&sub3; enthalten, welcher ein linearer oder verzweigter Rest ist, mit zumindest einer Ether-Funktionsgruppe und keiner Alkohol-Funktionsgruppe. Daher ist der Rest R&sub3; nicht zyklisch.According to the invention, the ether-amine must contain a radical R₃ which is a linear or branched radical with at least one ether functional group and no alcohol functional group. Therefore, the radical R₃ is not cyclic.
Gemäß einer besonderen Ausführungsform der Erfindung hat der Rest R&sub3; die folgende Formel R&sub1;-O-R&sub2;-, in welcher R&sub1; ein linearer oder verzweigter Alkylrest ist, der bevorzugterweise 1 bis 5 Kohlenstoffatome aufweist, und R&sub2; ein linearer oder verzweigter Alkylenrest ist, der bevorzugterweise von 2 bis 8 Kohlenstoffatome hat.According to a particular embodiment of the invention, the radical R₃ has the following formula R₁-O-R₂-, in which R₁ is a linear or branched alkyl radical, preferably having 1 to 5 carbon atoms, and R₂ is a linear or branched alkylene radical, preferably having 2 to 8 carbon atoms.
Das Ether-Amin enthält zumindest eine und bevorzugterweise 2 Einheiten, abgeleitet von einem Epoxid. Sehr vorteilhaft liegt p + q im Bereich von 1 bis 3. Es wird bevorzugt, daß p + q den Wert 2 hat. Außerdem ist es auch vorteilhaft, eine Mischung zu verwenden, enthaltend von 85 bis 95 Gewichtsprozent eines Ether- Amins mit einem Wert von p + q = 2 und von 15 bis 5% eines Ether-Amins mit einem Wert von p + q = 3.The ether-amine contains at least one and preferably 2 units derived from an epoxide. Very advantageously, p + q is in the range from 1 to 3. It is preferred that p + q has the value 2. Furthermore, it is also advantageous to use a mixture containing from 85 to 95% by weight of an ether-amine with a value of p + q = 2 and from 15 to 5% of an ether-amine with a value of p + q = 3.
Das Ether-Amin wird im allgemeinen durch Reaktion eines Ausgang-Ether-Amins mit einem Epoxid, wie beispielsweise Ethylenoxid, Propylenoxid oder einer Mischung der beiden, erhalten.The ether amine is generally obtained by reacting a starting ether amine with an epoxide such as ethylene oxide, propylene oxide or a mixture of the two.
Ein besonders vorteilhaftes Ausgang-Ether-Amin kann die nachfolgende allgemeine Formel (A) aufweisen:A particularly advantageous starting ether amine can have the following general formula (A):
R&sub1;-O-R&sub2;-NH&sub2;R₁-O-R₂-NH₂
in welcher R&sub1; und R&sub2; die gleiche Bedeutung wie oben besitzen. Das vorteilhafterweise erhaltene Ether-Amin enthält die Amine mit der nachfolgenden Formel (B): in which R₁ and R₂ have the same meaning as above. The advantageously obtained ether-amine contains the amines with the following formula (B):
in welcher R&sub1;, R&sub2;, R, p und q die gleiche Bedeutung wie oben besitzen. In der Praxis wird eine Mischung von Ether-Aminen der Formel (B) erhalten. Es ist erwünscht, hauptsächlich das Amin der Formel (B) zu erhalten, in welcher p = 1 und q = 1 ist.in which R₁, R₂, R, p and q have the same meaning as above. In practice, a mixture of ether-amines of the formula (B) is obtained. It is desirable to obtain mainly the amine of the formula (B) in which p = 1 and q = 1.
Die hydraulische Flüssigkeitszusammensetzung gemäß der Erfindung muß oftmals, gewichtsmäßig, zwischen 0,5 und 5%, und bevorzugterweise zwischen 1 und 4%, des Ether-Amins enthalten.The hydraulic fluid composition according to the invention must often contain, by weight, between 0.5 and 5%, and preferably between 1 and 4%, of the ether-amine.
Die Zusammensetzung der Erfindung hat gewöhnlich eine bei 40ºC gemessene Viskosität von gleich oder niedriger als 10 mm²/s und bevorzugterweise von zwischen 2 und 8 mm²/s. Sie besteht im wesentlichen aus zumindest einem Glykolether, wie zum Beispiel Butyltriglykolether, Ethyltriglykolether oder Methyltriglykolether, oder besonders häufig aus zumindest einem Borsäureester eines Glykolethers, wie zum Beispiel dem Borsäureester von Methyltriglykolether oder ferner aus einer Mischung der zwei. Wenn die hydraulische Flüssigkeit einen Borsäureester enthält, ist das Amin der Erfindung ein ausgezeichnetes neutralisierendes Mittel.The composition of the invention usually has a Viscosity measured at 40ºC of equal to or less than 10 mm²/s and preferably of between 2 and 8 mm²/s. It consists essentially of at least one glycol ether, such as butyl triglycol ether, ethyl triglycol ether or methyl triglycol ether, or more frequently of at least one boric acid ester of a glycol ether, such as the boric acid ester of methyl triglycol ether, or furthermore of a mixture of the two. When the hydraulic fluid contains a boric acid ester, the amine of the invention is an excellent neutralizing agent.
Die Zusammensetzung kann die üblichen Additive von hydraulischen Flüssigkeiten enthalten. Insbesondere kann sie außer dem Amin ein Korrosion-inhibierendes Additiv enthalten, wie Benzotriazol, Tolyltriazol, ein Alkalimetall- oder ein Erdalkalimetallnitrat, Triphenylphosphit oder Dodecenylbernsteinsäureanhydrid. Sie kann auch ein Oxidation-inhibierendes Additiv, wie Bisphenol A oder polymerisiertes Trimethylchinolin enthalten.The composition may contain the usual additives of hydraulic fluids. In particular, in addition to the amine, it may contain a corrosion-inhibiting additive such as benzotriazole, tolyltriazole, an alkali metal or an alkaline earth metal nitrate, triphenyl phosphite or dodecenyl succinic anhydride. It may also contain an oxidation-inhibiting additive such as bisphenol A or polymerized trimethylquinoline.
Eine Zusammensetzung gemäß der Erfindung kann vorteilhafterweise, gewichtsmäßig, enthalten:A composition according to the invention may advantageously contain, by weight:
a) Von 60 bis 95% Borsäureester des Monomethylethers von Triethylenglykol,a) From 60 to 95% boric acid ester of monomethyl ether of triethylene glycol,
b) von 1 bis 15% Monomethylether von Triethylenqlykol,b) from 1 to 15% monomethyl ether of triethylene glycol,
c) von 0 bis 15% Monobutylether von Triethylenqlykol undc) from 0 to 15% monobutyl ether of triethylene glycol and
d) von 0,5 bis 5% eines Ether-Amins gemäß der Erfindung.d) from 0.5 to 5% of an ether-amine according to the invention.
Das verwendete Amin macht es möglich, mehr im einzelnen Zusammensetzungen zu erhalten, die einen Gleichgewichtsrückfluß- Siedepunkt (E. R. B. P.) von gleich oder größer als 270ºC, z. B. von 270º bis 295ºC, haben, und gleichzeitig eine kinematische Viskosität, gemessen bei -40ºC, von gleich oder niedriger als 1100 mm²/s, z. B. von 900 bis 1100 mm²/s, während sie eine niedrige Verdampfbarkeit haben, welche gekennzeichnet ist durch eine geringe Variation in dem pH-Wert und in der Reserve-Alkalinität (RA), nachdem sie einem Verdampfungstest unterworfen waren. Es macht es auch möglich, Zusammensetzungen zu erzielen, die einen E. R. B. P. haben, gleich oder größer als 300ºC, z. B. von 300º bis 310ºC, während sie eine kinematische Viskosität, gemessen bei -40ºC, von gleich oder geringer als 1400 mm²/s, z. B. von 1250 mm²/s, haben. Überdies haben alle diese Zusammensetzungen einen pH-Wert zwischen 7 und 9, und bevorzugterweise zwischen 7,5 und 8,5, eine gute Verträglichkeit mit Elastomeren und gute Korrosion-inhibierende Eigenschaften, insbesondere mit Bezug auf eisenhaltige Legierungen oder Metalle.The amine used makes it possible to obtain, more particularly, compositions having an equilibrium reflux boiling point (ERBP) equal to or greater than 270ºC, e.g. from 270º to 295ºC, and at the same time a kinematic viscosity, measured at -40ºC, equal to or lower than 1100 mm²/s, e.g. from 900 to 1100 mm²/s, while having a low evaporability, characterized by a small variation in pH and in reserve alkalinity (RA) after being subjected to an evaporation test. It also makes it possible to obtain compositions having an ERBP equal to or greater than 300ºC, e.g. B. from 300º to 310ºC, while they have a kinematic viscosity, measured at -40ºC, equal to or less than 1400 mm²/s, e.g. 1250 mm²/s. Moreover, all these compositions have a pH between 7 and 9, and preferably between 7.5 and 8.5, good compatibility with elastomers and good corrosion-inhibiting properties, particularly with respect to ferrous alloys or metals.
Die Zusammensetzung gemäß der Erfindung ist besonders für die Herstellung von Bremsflüssigkeiten vom DOT 3-Typ (DOT bedeutet Department of Transportation U. S. A.) und bevorzugterweise vom DOT 4- oder DOT 5,1-Typ. Diese Bremsflüssigkeiten können sehr vorteilhaft in den Bremsanlagen von Konkurrenzfahrzeugen verwendet werden, insbesondere wenn sie einen E. R. B. P.-Wert von gleich oder größer als 300ºC haben.The composition according to the invention is particularly suitable for the preparation of brake fluids of the DOT 3 type (DOT means Department of Transportation U.S.A.) and preferably of the DOT 4 or DOT 5.1 type. These brake fluids can be used very advantageously in the braking systems of competitive vehicles, especially if they have an E. R. B. P. value equal to or greater than 300ºC.
Der E. R. B. P. einer hydraulischen Flüssigkeit wird in ºC gemäß dem SAE-Standard J 1703 vom Juni 1991 gemessen.The E.R.B.P. of a hydraulic fluid is measured in ºC according to SAE Standard J 1703 of June 1991.
Der pH-Wert einer hydraulischen Flüssigkeit wird gemäß dem SAE-Standard J 1703 vom Juni 1991 gemessen.The pH value of a hydraulic fluid is measured according to SAE standard J 1703 dated June 1991.
Die Reserve-Alkalinität (RA) einer hydraulischen Flüssigkeit wird durch das Volumen von 0,1n-Salzsäure, ausgedrückt in ml, notwendigerweise zur Erzielung eines pH-Werts von 5,5 für eine 50 ml-Probe einer hydraulischen Flüssigkeit, gemessen. Die folgenden Beispiele erläutern die vorliegende Erfindung.The reserve alkalinity (RA) of a hydraulic fluid is measured by the volume of 0.1N hydrochloric acid, expressed in ml, necessary to achieve a pH of 5.5 for a 50 ml sample of hydraulic fluid. The following examples illustrate the present invention.
7 hydraulische Flüssigkeitszusammensetzungen wurden hergestellt. Die Tabelle 1 gibt die Zusammensetzungen in Gewichtsprozent an. Die Zusammensetzung 1, hergestellt gemäß der Erfindung, enthält 2.2'-[3-(Methoxypropyl)imino]-bisethanol (Amin (C)), welches durch Reaktion von 3-Methoxypropylamin mit 2 Mol Ethylenoxid erhalten war. Dieses Ether-Amin hatte die folgende Zusammensetzung in Gewichtsprozent:7 hydraulic fluid compositions were prepared. Table 1 gives the compositions in weight percent. Composition 1, prepared according to the invention, contains 2.2'-[3-(methoxypropyl)imino]-bisethanol (amine (C)), which was obtained by reaction of 3-methoxypropylamine with 2 moles of ethylene oxide. This ether-amine had the following composition in weight percent:
(1) CH&sub3;-O-(CH&sub2;)&sub3;-NH-CH&sub2;-CH&sub2;-OH 5% (1) CH3 -O-(CH2 )3 -NH-CH2 -CH2 -OH 5%
Die anderen Zusammensetzungen sind vergleichend und wurden nicht gemäß der Erfindung hergestellt.The other compositions are comparative and were not prepared according to the invention.
Die Tabelle 2 zeigt für jede der Zusammensetzungen 1 bis 7 die folgenden Eigenschaften:Table 2 shows for each of the compositions 1 to 7 the following properties:
- Den Borgehalt in Gewichtsprozent,- The boron content in percent by weight,
- den pH-Wert,- the pH value,
- den Gleichgewichtsrückfluß-Siedepunkt (E. R. B. P.),- the equilibrium reflux boiling point (E. R. B. P.),
- die kinematische Viskosität, gemessen bei -40ºC und angegeben in mm²/s,- the kinematic viscosity, measured at -40ºC and expressed in mm²/s,
- die Ergebnisse des SBR-Kautschuk-Quelltests, durchgeführt bei 120ºC und für 70 Stunden gemäß dem SAE-Standard J 1703 vom Juni 1991.- the results of the SBR rubber swelling test carried out at 120ºC and for 70 hours according to SAE standard J 1703 of June 1991.
Darüberhinaus zeigt die Tabelle 2 auch die Anforderungen für die gemessenen Eigenschaften. Es wurde beobachtet, daß die Zusammensetzung 1 es ermöglichte, alle diese Anforderungen zu erfüllen. Die Zusammensetzung 5 hatte eine außergewöhnlich große Quellung der Elastomeren, die Zusammensetzung 4 hatte einen außergewöhnlich niedrigen pH-Wert und eine außergewöhnlich hohe Visko sität, wohingegen die Zusammensetzungen 2, 6 und 7 einen außergewöhnlich niedrigen E. R. B. P. hatten.In addition, Table 2 also shows the requirements for the measured properties. It was observed that composition 1 made it possible to meet all these requirements. Composition 5 had an exceptionally high swelling of the elastomers, composition 4 had an exceptionally low pH and an exceptionally high viscosity. sity, whereas compositions 2, 6 and 7 had an exceptionally low ERBP.
3 hydraulische Flüssigkeitszusammensetzungen wurden hergestellt. Die Tabelle 3 zeigt die Zusammensetzungen in Gewichtsprozent. Die Zusammensetzung 8, hergestellt gemäß der Erfindung, enthielt in Beispiel 1 verwendetes 2,2'-[3-(Methoxypropyl)imino]bisethanol (Amin (C)). Die anderen Zusammensetzungen sind Vergleichszusammensetzungen, welche nicht gemäß der Erfindung hergestellt worden waren. In Tabelle 3 bedeutet "Additive" eine Mischung, enthaltend Tolyltriazol, Triphenylphosphit und polymerisiertes Trimethylchinolin. Diese Mischung wird verwendet, um eine hydraulische Flüssigkeit, enthaltend 200 ppm Tolyltriazol, 0,1 Gewichtsprozent Triphenylphosphit und 0,02 Gewichtsprozent des polymerisierten Trimethylchinolins, zu erhalten.3 hydraulic fluid compositions were prepared. Table 3 shows the compositions in weight percent. Composition 8, prepared according to the invention, contained 2,2'-[3-(methoxypropyl)imino]bisethanol (amine (C)) used in Example 1. The other compositions are comparative compositions which were not prepared according to the invention. In Table 3, "additives" means a mixture containing tolyltriazole, triphenylphosphite and polymerized trimethylquinoline. This mixture is used to obtain a hydraulic fluid containing 200 ppm of tolyltriazole, 0.1 weight percent of triphenylphosphite and 0.02 weight percent of the polymerized trimethylquinoline.
Die Tabelle 4 zeigt, für jede der Zusammensetzungen, die folgenden gemessenen Eigenschaften mit den Anforderungen:Table 4 shows, for each of the compositions, the following measured properties with the requirements:
- Der pH-Wert,- The pH value,
- der E. R. B. P. in ºC,- the E. R. B. P. in ºC,
- die kinematische Viskosität, gemessen bei -40ºC, angegeben in mm²/s,- the kinematic viscosity, measured at -40ºC, expressed in mm²/s,
- der pH-Wert, gemessen nach Durchführung des Verdampfungstests Nr. 1,- the pH value measured after carrying out the evaporation test No. 1,
- die anfängliche Reserve-Alkalinität,- the initial reserve alkalinity,
- und die Veränderung in dieser Reserve-Alkalinität, gemessen nach Ausführung des Verdampfungstests Nr. 2.- and the change in this reserve alkalinity, measured after performing evaporation test No. 2.
Die Zusammensetzung 8 machte es möglich, alle die Anforderungen zu erfüllen. Darüberhinaus zeigt sie die folgenden Ergebnisse der SBR-Quellteste, durchgeführt gemäß dem SAE-Standard J 1703 vom Juni 1991:Composition 8 made it possible to meet all the requirements. In addition, it shows the following results of the SBR swelling tests carried out according to SAE standard J 1703 of June 1991:
- Variation in dem Durchmesser (mm): 0,74,- Variation in diameter (mm): 0.74,
- Variation in dem Volumen (%): 9,95,- Variation in volume (%): 9.95,
- Variation in der Härte: -11.- Variation in hardness: -11.
Darüberhinaus sind die Ergebnisse der gemäß dem SAE-Stan dard J 1703 durchgeführten Korrosionsteste die folgenden:In addition, the results of the tests according to SAE standard The corrosion tests carried out in accordance with standard J 1703 were as follows:
- Eisen(II)-metalle: Weniger als 0,1 mg/cm²,- Iron(II) metals: Less than 0.1 mg/cm²,
- Aluminium: Weniger als 0,1 mg/cm².- Aluminium: Less than 0.1 mg/cm².
- Kupfer: Weniger als 0,1 mg/cm².- Copper: Less than 0.1 mg/cm².
Die Zusammensetzung 9, welche Tridecylamin enthielt, hatte einen pH-Wert, gemessen nach dem Verdampfungstest Nr. 1, von weniger als 7, wohingegen die Zusammensetzung 10 eine außergewöhnlich große Variation in der Reserve-Alkalinität zeigte.Composition 9, which contained tridecylamine, had a pH, measured by Evaporation Test No. 1, of less than 7, whereas Composition 10 showed an exceptionally large variation in reserve alkalinity.
In den Beispielen 8 bis 10 wurde der Verdampfungstest Nr. 1 in der folgenden Weise durchgeführt: 100 ml hydraulische Flüssigkeit wurden in ein 600 ml-Becherglas eingefüllt. Der Becher wurde dann für 168 Stunden in einen bei 140ºC gehaltenen Ofen plaziert.In Examples 8 to 10, Evaporation Test No. 1 was conducted in the following manner: 100 ml of hydraulic fluid was placed in a 600 ml beaker. The beaker was then placed in an oven maintained at 140ºC for 168 hours.
Der Verdampfungstest Nr. 2 wurde in der folgenden Weise durchgeführt: 200 ml hydraulische Flüssigkeit wurden in einen 500 ml-Rundkolben mit einem verkleinerten Hals eingeführt. Dieser Rundkolben wurde für 24 Stunden in einen Ofen plaziert, gehalten bei 80ºC ± 2ºC und unter einem Vakuum von 2 mm Quecksilber. TABELLE 1 TABELLE 2 TABELLE 3 TABELLE 4 Evaporation test No. 2 was carried out in the following manner: 200 ml of hydraulic fluid was introduced into a 500 ml round-bottom flask with a reduced neck. This round-bottom flask was placed in an oven maintained at 80ºC ± 2ºC and under a vacuum of 2 mm mercury for 24 hours. TABLE 1 TABLE 2 TABLE 3 TABLE 4
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9303342A FR2702772B1 (en) | 1993-03-17 | 1993-03-17 | Hydraulic fluid composition. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69422075D1 DE69422075D1 (en) | 2000-01-20 |
| DE69422075T2 true DE69422075T2 (en) | 2000-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69422075T Expired - Fee Related DE69422075T2 (en) | 1993-03-17 | 1994-03-09 | Hydraulic fluid composition |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0617116B1 (en) |
| DE (1) | DE69422075T2 (en) |
| ES (1) | ES2141196T3 (en) |
| FR (1) | FR2702772B1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6558569B1 (en) | 2000-11-10 | 2003-05-06 | Union Carbide Chemicals & Plastics Technology Corporation | Low viscosity functional fluids compositions |
| KR20080025192A (en) | 2005-07-01 | 2008-03-19 | 다우 글로벌 테크놀로지스 인크. | Low Viscosity Functional Fluids |
| WO2010053639A1 (en) * | 2008-11-07 | 2010-05-14 | Dow Global Technologies Inc. | Low viscosity functional fluids |
| JP2015516495A (en) * | 2012-05-15 | 2015-06-11 | ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ | Novel low viscosity functional liquid composition |
| ES2948341T3 (en) | 2020-04-23 | 2023-09-08 | Clariant Int Ltd | Composition of low viscosity functional fluid |
| EP3929269A1 (en) | 2020-06-22 | 2021-12-29 | Clariant International Ltd | Low viscosity functional fluid composition |
| EP4056669A1 (en) | 2021-03-12 | 2022-09-14 | Clariant International Ltd | Low viscosity functional fluid composition |
| CN113122357B (en) * | 2021-04-19 | 2023-01-24 | 中国石油化工股份有限公司 | Brake fluid composition for motor vehicle and preparation method thereof |
| EP4130211A1 (en) | 2021-08-02 | 2023-02-08 | Clariant International Ltd | Low viscosity functional fluid composition |
| EP4582524A1 (en) | 2024-01-03 | 2025-07-09 | Clariant International Ltd | Functional fluid |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3637794A (en) * | 1967-04-13 | 1972-01-25 | Olin Mathieson | Borate esters prepared by successive reactions of boric acid with glycol monoethers and polyols |
| DE1906038C3 (en) * | 1969-02-07 | 1973-11-08 | Chemische Werke Huels Ag, 4370 Marl | lubricant |
| JPS5930759B2 (en) * | 1977-05-31 | 1984-07-28 | 三洋化成工業株式会社 | Novel brake fluid composition |
| GB2172284B (en) * | 1985-03-12 | 1988-07-27 | Ciba Geigy Ag | Nitrogen-containing additives for non-aqueous functional fluids |
| DE68907288T2 (en) * | 1988-06-24 | 1993-10-21 | Exxon Chemical Patents Inc | Friction-reducing hydroxy ether amines for power transmission fluids and wear protection additives that can be used with them. |
-
1993
- 1993-03-17 FR FR9303342A patent/FR2702772B1/en not_active Expired - Fee Related
-
1994
- 1994-03-09 DE DE69422075T patent/DE69422075T2/en not_active Expired - Fee Related
- 1994-03-09 ES ES94301644T patent/ES2141196T3/en not_active Expired - Lifetime
- 1994-03-09 EP EP94301644A patent/EP0617116B1/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| FR2702772B1 (en) | 1995-04-28 |
| FR2702772A1 (en) | 1994-09-23 |
| ES2141196T3 (en) | 2000-03-16 |
| DE69422075D1 (en) | 2000-01-20 |
| EP0617116A1 (en) | 1994-09-28 |
| EP0617116B1 (en) | 1999-12-15 |
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