EP1171552B1 - Hydraulische flüssigkeiten, enthaltend cyclische carbonsäurederivate - Google Patents
Hydraulische flüssigkeiten, enthaltend cyclische carbonsäurederivate Download PDFInfo
- Publication number
- EP1171552B1 EP1171552B1 EP00922626A EP00922626A EP1171552B1 EP 1171552 B1 EP1171552 B1 EP 1171552B1 EP 00922626 A EP00922626 A EP 00922626A EP 00922626 A EP00922626 A EP 00922626A EP 1171552 B1 EP1171552 B1 EP 1171552B1
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- EP
- European Patent Office
- Prior art keywords
- carboxylic acid
- acid derivatives
- cyclic carboxylic
- group
- formula
- Prior art date
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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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/003—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
Definitions
- FR-A 2 209 830 (corresponds to DE-B 2 260 701) discloses the Use of cyclic carboxylic acid derivatives in the form of N-alkylpyrrolidones in hydraulic fluids in an amount of 20 to 60 wt .-% to reduce wear and improve the lubricating properties.
- Hydraulic fluids and especially brake fluids for motor vehicles are subject with regard to their chemical and physical properties very high requirements.
- brake fluids from the U.S. Department of Transportation in the Federal Motor Vehicle Safety Standard FMVSS no. 116 and that of the Society of Automotive Engineers published standard SAE J 1704 are said to be modern Brake fluids on the one hand have high dry boiling points (Reflux boiling points, dry [Equilibrium reflux boiling point, "ERBP”]) and high wet boiling points (reflux points, moist ["wet ERBP”]), but also a viscosity have, which are within a wide temperature range little changes. There are also further requirements from the automotive industry after a low Low temperature viscosity in the presence of water.
- cyclic carboxylic acid derivatives of the general formula I are, in particular, cyclic carboxamides (lactams) and cyclic carboxylic acid esters (lactones), which can serve as precursors in the preparation of the first-mentioned lactams.
- lactones cyclic carboxylic acid esters
- Five- and six-membered ring systems can be used as particularly preferred ring sizes.
- NC 1 to C 20 alkyl pyrrolidones-2 are particularly preferred ring sizes.
- the ring member X preferably represents a grouping of the formula NR 1 .
- the radical R 1 denotes, for example, methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, tert-butyl, n-pentyl, iso-pentyl, sec-pentyl , tert-pentyl, neo-pentyl, n-hexyl, cyclohexyl, phenyl, n-heptyl, n-octyl, 2-ethylhexyl, n-nonyl, iso-nonyl, n-decyl, iso-decyl, n-undecyl, n-dodecyl, n-tridecyl, iso-tridecyl, n-tetradecyl, n-hexydecyl, n-octa
- the radical R 1 preferably denotes hydrogen or a linear or branched C 1 -C 6 -alkyl group, which can additionally be interrupted by up to 3 non-adjacent oxygen atoms and / or can carry up to 2 hydroxyl groups, or a cyclohexyl or phenyl group ,
- R 1 can serve as examples of R 2 and R 3 .
- R 2 and R 3 are preferably hydrogen or methyl groups, especially hydrogen.
- n is preferably 2, 3 or 4; this would result Ring sizes from four to six-membered rings.
- the cyclic carboxylic acid derivatives I are known substances, which are commercially available or according to common manufacturing methods can be synthesized.
- the brake fluids contain for motor vehicles 0.01 to 10 wt .-% of one or more of the described cyclic carboxylic acid derivatives I. Both for hydraulic Liquids as well as brake fluids for motor vehicles are preferred contents of the compounds I 0.5 to 10% by weight, based on the total mass of the hydraulic fluid or brake fluid.
- the presence of the compounds I ensures in an excellent manner that the hydraulic fluid or brake fluid for Motor vehicles meet the requirements mentioned above and in addition to those for brake fluids from the US Department of Transportation in the Federal Motor Vehicle Safety Standard FMVSS no. 116 specified requirements of the specifications DOT 5 and DOT 5.1 for silicone-free brake fluids, also the tightened ones Requirements from among the automotive industry a low low temperature viscosity in the presence of water clearly exceeds.
- the compounds I can therefore be used in hydraulic fluids or brake fluids for motor vehicles the viscosity, in particular the Low temperature viscosity in the presence of water, to decrease d. H. set to a lower level.
- 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. There are also ethylene glycol or Propylene glycol dialkyl ether with up to 6 alkylene oxide units and each with up to 4 carbon atoms in the alkyl radicals into consideration.
- Suitable boric acid esters of those mentioned or of other polyglycol ethers are described in particular in documents EP-B 013 925 (cyclic Bis-boric acid ester), DE-C 28 04 535 (nitrogen-containing boric acid ester), DE-A 24 38 038 (boric acid-alkylene glycol monoalkyl ether ester) and DE-B 17 68 933 (tris-alkoxyalkyl borate) described.
- the brake fluids according to the invention for motor vehicles as the main component also those based on carboxylic acid esters, Contain mineral oils or silicone oils.
- the brake fluids used for motor vehicles according to the invention contained in a further preferred embodiment in addition to the compounds I further 0.1 to 50 wt .-%, in particular 1 to 40 wt .-%, especially 5 to 30 wt .-%, each based 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 usually 2 to 10.
- the effect of these high-boiling polyglycols is one Lubricant, which essentially indicates an improvement in the Temperature-viscosity behavior is attributable.
- the polyglycols give the thin polyglycol ethers at high Temperatures sufficient viscosity and thus ensure sufficient Lubrication. Sufficient lubrication is therefore in the components of the motor vehicle braking system necessary because there Glide rubber or elastomers on metal as wear-free as possible have to.
- the brake fluids used for motor vehicles according to the invention contained in a further preferred embodiment in addition to the compounds I further 0.01 to 10 wt .-%, in particular 0.02 to 6 wt .-%, especially 0.05 to 4 wt .-%, each based on the total mass of the brake fluid, one or more Corrosion inhibitors.
- Corrosion inhibitors in brake fluids have the task the destruction of metallic materials caused by corrosion to prevent.
- corrosion inhibitors especially alkali metal salts of phosphoric acid and phosphorous Acid, fatty acids such as caprylic, lauric, palmitic, stearic or Oleic acid and its alkali metal salts, esters of phosphoric acid and the phosphorous acid such as ethyl phosphate, dimethyl phosphate, Isopropyl phosphate, diisopropyl phosphate, butyl phosphite or dimethyl phosphite, optionally ethoxylated mono- and dialkylamines and their salts with mineral and fatty acids, e.g.
- butylamine Hexylamine, octylamine, isononylamine, oleylamine, dipropylamine, Diisopropylamine or dibutylamine, optionally ethoxylated Alkanolamines, e.g. Mono-, di- or triethanolamine, N, N'-din-butylaminoethanol or 1,1'-iminodipropan-2-ol, cyclohexylamine, Triazoles such as benzo- or tolutriazole and nitroaromatics, e.g. 3-nitrobenzaldehyde.
- Alkanolamines e.g. Mono-, di- or triethanolamine, N, N'-din-butylaminoethanol or 1,1'-iminodipropan-2-ol, cyclohexylamine, Triazoles such as benzo- or tolutriazole and nitroaromatics, e.g. 3-nitrobenzaldehy
- Brake fluids for motor vehicles can contain common antioxidants, e.g. those based on phenol, and conventional defoamers his.
- the motor vehicle brake fluid BF 1 used without connections I had the following composition: 75% by weight Methyltriglycol-borate, 22% by weight a mixture of methyldi, methyltri and methyltetraglycol, ⁇ 3% by weight a mixture of N, N'-di-n-butylaminoethanol, 1,1'-iminodipropan-2-ol, tolutriazole and 3-nitrobenzaldehyde ⁇ 0.5% by weight Bisphenol A
- BF 1 starting 5 wt .-% methyl triglycol against 5 wt .-% of cyclic carboxylic acid derivatives used according to the invention.
Description
- X
- für ein Sauerstoffatom oder eine Gruppierung der Formel N-R1 steht, wobei
- R1
- Wasserstoff oder eine lineare oder verzweigte C1- bis C20-Alkylgruppe bezeichnet, welche noch zusätzlich durch bis zu 9 nicht benachbarte Sauerstoffatome unterbrochen sein und/oder bis zu 6 Hydroxylgruppen tragen kann, oder eine Cycloalkylgruppe oder eine gegebenenfalls substituierte Phenylgruppe bezeichnet,
- A
- eine Gruppierung der Formel -CR2R3- bezeichnet, wobei
- R2 und R3
- für Wasserstoff oder C1- bis C8-Alkylgruppen stehen, welche noch zusätzlich durch bis zu 4 nicht benachbarte Sauerstoffatome unterbrochen sein und/oder bis zu 3 Hydroxylgruppen tragen können, und
- n
- eine Zahl von 2 bis 7 bedeutet,
Trockenkochpunkt (Equilibrium reflux boiling pomt; "ERBP") | ≥ 260°C |
Naßkochpunkt ("wet ERBP") | ≥ 180°C |
Kinematische Viskosität bei -40°C ("V") | ≤ 900 cSt |
- X
- für ein Sauerstoffatom oder eine Gruppierung der Formel N-R1 steht, wobei
- R1
- eine lineare oder verzweigte C1- bis C20-Alkylgruppe, welche noch zusätzlich durch bis zu 9 nicht benachbarte Sauerstoffatome unterbrochen sein und/oder bis zu 6 Hydroxylgruppen tragen kann, oder eine Cycloalkylgruppe oder eine gegebenenfalls substituierte Phenylgruppe bezeichnet,
- A
- eine Gruppierung der Formel -CR2R3- bezeichnet, wobei
- R2 und R3
- für Wasserstoff oder C1- bis C8-Alkylgruppen stehen, welche noch zusätzlich durch bis zu 4 nicht benachbarte Sauerstoffatome unterbrochen sein und/oder bis zu 3 Hydroxylgruppen tragen können, und
- n
- eine Zahl von 2 bis 7 bedeutet,
75 Gew.-% | Methyltriglykol-borat, |
22 Gew.-% | einer Mischung aus Methyldi-, -Methyltri- und Methyltetraglykol, |
< 3 Gew.-% | einer Mischung aus N,N'-Di-n-Butylaminoethanol, 1,1'-Iminodipropan-2-ol, Tolutriazol und 3-Nitrobenzaldehyd |
< 0,5 Gew.-% | Bisphenol A |
Additiv | Gehalt [Gew.-% ] | V [cSt ] | V(4%H2O) [cSt] | wet ERBP [°C] | ERBP [°C] |
N-Methyl-pyrrolidon-2 | 5 | 702 | 1058 | 184 | 269 |
N-iso-Propyl-pyrrolidon-2 | 5 | 748 | 1136 | 187 | 269 |
N-sek.-Butyl-pyrrolidon-2 | 5 | 772 | 1163 | 186 | 267 |
N-tert.-Butyl-pyrrolidon-2 | 5 | 790 | 1196 | 184 | 263 |
N-n-Butyl-pyrrolidon-2 | 5 | 757 | 1141 | 185 | 269 |
N-n-Pentyl-pyrrolidon-2 | 5 | 797 | 1190 | 186 | 269 |
N-n-Hexyl-pyrrolidon-2 | 5 | 790 | 1175 | 184 | 270 |
zum Vergleich: | |||||
BF 1 | - | 833 | 1223 | 181 | 269 |
Hydraulan® 508 | - | 795 | 1334 | 181 | 269 |
DOT 5.1 Brake Fluid® | - | 900 | 1265 | 180 | 262 |
Claims (10)
- Verwendung eines oder mehrerer cyclischer Carbonsäurederivate der allgemeinen Formel I in der
- X
- für ein Sauerstoffatom oder eine Gruppierung der Formel N-R1 steht, wobei
- R1
- Wasserstoff oder eine lineare oder verzweigte C1- bis C20-Alkylgruppe, welche noch zusätzlich durch bis zu 9 nicht benachbarte Sauerstoffatome unterbrochen sein und/oder bis zu 6 Hydroxylgruppen tragen kann, oder eine Cycloalkylgruppe oder eine gegebenenfalls substituierte Phenylgruppe bezeichnet,
- A
- eine Gruppierung der Formel -CR2R3- bezeichnet, wobei
- R2 und R3
- für Wasserstoff oder C1- bis C8-Alkylgruppen stehen, welche noch zusätzlich durch bis zu 4 nicht benachbarte Sauerstoffatome unterbrochen sein und/oder bis zu 3 Hydroxylgruppen tragen können, und
- n
- eine Zahl von 2 bis 7 bedeutet,
- Verwendung von cyclischen Carbonsäurederivaten I, bei denen X für eine Gruppierung der Formel N-R1 steht, nach Anspruch 1.
- Verwendung von cyclischen Carbonsäurederivaten I, bei denen R1 Wasserstoff oder eine lineare oder verzweigte C1- bis C6-Alkylgruppe bezeichnet, welche noch zusätzlich durch bis zu 3 nicht benachbarte Sauerstoffatome unterbrochen sein und/oder bis zu 2 Hydroxylgruppen tragen kann, nach Anspruch 1 oder 2.
- Verwendung von cyclischen Carbonsäurederivaten I, bei denen R2 und R3 für Wasserstoff oder Methylgruppen stehen, nach den Ansprüchen 1 bis 3.
- Verwendung von cyclischen Carbonsäurederivaten I, bei denen n die Zahl 2, 3 oder 4 bedeutet, nach den Ansprüchen 1 bis 4.
- Verwendung von cyclischen Carbonsäurederivaten I gemäß den Ansprüchen 1 bis 5 als Bremsflüssigkeiten für Kraftfahrzeuge. in einer Menge von 0,01 bis 10 Gew.-%.
- Verwendung von cyclischen Carbonsäurederivaten I nach Anspruch 6, wobei die Bremsflüssigkeiten neben den Verbindungen I weiterhin 0,1 bis 97 Gew.-% eines oder mehrerer Polyglykolether und/oder deren Borsäureester enthalten.
- Verwendung von cyclischen Carbonsäurederivaten I nach Anspruch 6 oder 7, wobei die Bremsflüssigkeiten neben den Verbindungen I weiterhin 0,1 bis 50 Gew.-% eines oder mehrerer Polyglykole enthalten.
- Verwendung von cyclischen Carbonsäurederivaten I nach den Ansprüchen 6 bis 8, wobei die Bremsflüssigkeiten neben den Verbindungen I weiterhin 0,01 bis 10 Gew.-% eines oder mehrerer Korrosionsinhibitoren enthalten.
- Hydraulische Flüssigkeiten, enthaltend 0,01 bis 10 Gew.-% eines oder mehrerer cyclischer Carbonsäurederivate der allgemeinen Formel I in der
- X
- für ein Sauerstoffatom oder eine Gruppierung der Formel N-R1 steht, wobei
- R1
- eine lineare oder verzweigte C1- bis C20-Alkylgruppe, welche noch zusätzlich durch bis zu 9 nicht benachbarte Sauerstoffatome unterbrochen sein und/oder bis zu 6 Hydroxylgruppen tragen kann, oder eine Cycloalkylgruppe oder eine gegebenenfalls substituierte Phenylgruppe bezeichnet,
- A
- eine Gruppierung der Formel -CR2R3- bezeichnet, wobei
- R2 und R3
- für Wasserstoff oder C1- bis C8-Alkylgruppen stehen, welche noch zusätzlich durch bis zu 4 nicht benachbarte Sauerstoffatome unterbrochen sein und/oder bis zu 3 Hydroxylgruppen tragen können, und
- n
- eine Zahl von 2 bis 7 bedeutet.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19918199 | 1999-04-22 | ||
DE19918199A DE19918199A1 (de) | 1999-04-22 | 1999-04-22 | Hydraulische Flüssigkeiten, enthaltend cyclische Carbonsäurederivate |
PCT/EP2000/003230 WO2000065001A1 (de) | 1999-04-22 | 2000-04-11 | Hydraulische flüssigkeiten, enthaltend cyclische carbonsäurederivate |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1171552A1 EP1171552A1 (de) | 2002-01-16 |
EP1171552B1 true EP1171552B1 (de) | 2003-06-18 |
Family
ID=7905435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00922626A Expired - Lifetime EP1171552B1 (de) | 1999-04-22 | 2000-04-11 | Hydraulische flüssigkeiten, enthaltend cyclische carbonsäurederivate |
Country Status (10)
Country | Link |
---|---|
US (1) | US6783693B1 (de) |
EP (1) | EP1171552B1 (de) |
JP (1) | JP2002543238A (de) |
KR (1) | KR100660953B1 (de) |
AT (1) | ATE243248T1 (de) |
CA (1) | CA2367913C (de) |
DE (2) | DE19918199A1 (de) |
ES (1) | ES2202113T3 (de) |
PT (1) | PT1171552E (de) |
WO (1) | WO2000065001A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040234701A1 (en) * | 2003-02-19 | 2004-11-25 | Caton Gregory James | Lower alkyl carboxylic acid moieties as organoleptic stabilizers and preservatives of food and beverages and for preventing oxidative corrosion of metals |
US20130310286A1 (en) * | 2012-05-15 | 2013-11-21 | Basf Se | Novel low viscosity functional fluid composition |
ES2728662T3 (es) | 2012-05-15 | 2019-10-28 | Basf Se | Nueva composición de fluido funcional de baja viscosidad |
CA2924730C (en) | 2013-10-10 | 2022-04-12 | Basf Se | Functional fluid comprising alkoxylate ethers of fatty acids |
MX2021002816A (es) | 2020-04-23 | 2022-01-24 | Clariant Int Ltd | Composicion de fluido funcional de baja viscosidad. |
EP3929269A1 (de) | 2020-06-22 | 2021-12-29 | Clariant International Ltd | Funktionale fluidzusammensetzung mit niedriger viskosität |
EP4056669A1 (de) | 2021-03-12 | 2022-09-14 | Clariant International Ltd | Niedrigviskose funktionsflüssigkeitszusammensetzung |
EP4130211A1 (de) | 2021-08-02 | 2023-02-08 | Clariant International Ltd | Funktionale fluidzusammensetzung mit niedriger viskosität |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3334048A (en) * | 1963-01-17 | 1967-08-01 | Castrol Ltd | Hydraulic fluids |
US3637794A (en) | 1967-04-13 | 1972-01-25 | Olin Mathieson | Borate esters prepared by successive reactions of boric acid with glycol monoethers and polyols |
GB1323061A (en) * | 1969-06-16 | 1973-07-11 | Castrol Ltd | Functional fluids and additives therefor |
DE2260701C2 (de) * | 1972-12-12 | 1974-09-12 | Basf Ag, 6700 Ludwigshafen | Hydraulikflüssigkeiten |
JPS5046584A (de) * | 1973-08-11 | 1975-04-25 | ||
DE2804535C2 (de) | 1978-02-03 | 1984-04-26 | Alfred Teves Gmbh, 6000 Frankfurt | Hydraulische Flüssigkeiten |
DE2901835A1 (de) | 1979-01-18 | 1980-07-31 | Hoechst Ag | Hydraulische fluessigkeiten |
US4461713A (en) * | 1983-04-01 | 1984-07-24 | Stauffer Chemical Company | Acid-resistant phosphate ester functional fluids |
-
1999
- 1999-04-22 DE DE19918199A patent/DE19918199A1/de not_active Withdrawn
-
2000
- 2000-04-11 US US09/959,160 patent/US6783693B1/en not_active Expired - Fee Related
- 2000-04-11 JP JP2000614340A patent/JP2002543238A/ja active Pending
- 2000-04-11 KR KR1020017013231A patent/KR100660953B1/ko not_active IP Right Cessation
- 2000-04-11 WO PCT/EP2000/003230 patent/WO2000065001A1/de active IP Right Grant
- 2000-04-11 PT PT00922626T patent/PT1171552E/pt unknown
- 2000-04-11 CA CA002367913A patent/CA2367913C/en not_active Expired - Fee Related
- 2000-04-11 EP EP00922626A patent/EP1171552B1/de not_active Expired - Lifetime
- 2000-04-11 ES ES00922626T patent/ES2202113T3/es not_active Expired - Lifetime
- 2000-04-11 AT AT00922626T patent/ATE243248T1/de active
- 2000-04-11 DE DE50002594T patent/DE50002594D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR20020010606A (ko) | 2002-02-04 |
ATE243248T1 (de) | 2003-07-15 |
DE19918199A1 (de) | 2000-10-26 |
PT1171552E (pt) | 2003-10-31 |
JP2002543238A (ja) | 2002-12-17 |
KR100660953B1 (ko) | 2006-12-26 |
WO2000065001A1 (de) | 2000-11-02 |
EP1171552A1 (de) | 2002-01-16 |
CA2367913C (en) | 2008-01-08 |
US6783693B1 (en) | 2004-08-31 |
CA2367913A1 (en) | 2000-11-02 |
ES2202113T3 (es) | 2004-04-01 |
DE50002594D1 (de) | 2003-07-24 |
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