DE1269758B - Hydraulic fluids - Google Patents
Hydraulic fluidsInfo
- Publication number
- DE1269758B DE1269758B DEP1269A DE1269758A DE1269758B DE 1269758 B DE1269758 B DE 1269758B DE P1269 A DEP1269 A DE P1269A DE 1269758 A DE1269758 A DE 1269758A DE 1269758 B DE1269758 B DE 1269758B
- Authority
- DE
- Germany
- Prior art keywords
- hydraulic fluids
- ester
- viscosity
- esters
- acid
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims description 6
- 239000002253 acid Substances 0.000 claims description 9
- 150000007513 acids Chemical class 0.000 claims description 4
- 125000005119 alkyl cycloalkyl group Chemical group 0.000 claims description 2
- 125000005907 alkyl ester group Chemical group 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 description 7
- ZWRUINPWMLAQRD-UHFFFAOYSA-N nonan-1-ol Chemical compound CCCCCCCCCO ZWRUINPWMLAQRD-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 3
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- -1 orthosilicic acid ester Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 150000002895 organic esters Chemical group 0.000 description 1
- 150000002905 orthoesters Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- SXYOAESUCSYJNZ-UHFFFAOYSA-L zinc;bis(6-methylheptoxy)-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].CC(C)CCCCCOP([S-])(=S)OCCCCCC(C)C.CC(C)CCCCCOP([S-])(=S)OCCCCCC(C)C SXYOAESUCSYJNZ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- 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
- C10M3/00—Liquid compositions essentially based on lubricating components other than mineral lubricating oils or fatty oils and their use as lubricants; Use as lubricants of single liquid substances
-
- 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
- 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
- C10M2227/02—Esters of silicic acids
-
- 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
- C10M2229/04—Siloxanes with specific structure
- C10M2229/045—Siloxanes with specific structure containing silicon-to-hydroxyl bonds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2229/04—Siloxanes with specific structure
- C10M2229/046—Siloxanes with specific structure containing silicon-oxygen-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2229/04—Siloxanes with specific structure
- C10M2229/047—Siloxanes with specific structure containing alkylene oxide groups
-
- 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
- C10M2229/04—Siloxanes with specific structure
- C10M2229/048—Siloxanes with specific structure containing carboxyl groups
-
- 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
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
-
- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Silicon Polymers (AREA)
- Lubricants (AREA)
- Liquid Crystal Substances (AREA)
Description
Hydraulikflüssigkeiten Die Qualitätsanforderungen an Hydraulikflüssigkeiten steigen ständig und beziehen sich auf viele Eigenschaften. So wird vor allem ein möglichst geringer Temperaturkoeffizient der Viskosität verlangt, weiterhin wird aber auch größtmögliche Sicherheit gegen Entflammung und Brennen verlangt. Selbstverständlich spielen auch die absolute Höhe der Viskosität, die Stabilität gegen Wassereinwirkung, sei es als Dampf, sei es als Flüssigkeit, der Stockpunkt und nicht zuletzt der Preis eine wichtige Rolle.Hydraulic fluids The quality requirements for hydraulic fluids are constantly increasing and relate to many properties. So, above all, will be a The lowest possible temperature coefficient of viscosity required, continues to be but also the greatest possible safety against ignition and burning is required. Of course also play the absolute level of viscosity, the stability against the action of water, be it as vapor, be it as liquid, the pour point and, last but not least, the price an important role.
Seit langem sind die Silikone wegen des extrem niedrigen Temperaturkoeffizienten der Viskosität eine zwar nützliche, aber auch teure Klasse solcher Flüssigkeiten. Sie gehören auch zu den relativ schwer entflammbaren Stoffen (vgl. W. N o 11, »Chemie und Technologie der Silikone«, Verlag Chemie, Weinheim [1960], S.410 bis 425). Erdölfraktionen aus dem höheren Temperaturbereich mit geeigneten physikalischen Eigenschaften werden ebenfalls vielfach verwendet, sie haben aber einen hohen Temperaturkoeffizienten der Viskosität und sind wegen ihrer Entflammbarkeit nur beschränkt anwendbar (vgl. N. W.Furby,R.L.PeelerundR.1.Stirton, »Oronite High Temperature Hydraulic Fluids«, Trans. Am. Soc. Mechan. Eng., 79 [1957], S. 1029 bis 1037). Auch sind Ester der phosphorigen Säure und der Phosphorsäure und Orthokieselsäureester für diesen Zweck im Gebrauch (vgl. deutsche Patentschriften 916 340 und 937 946). Doch befriedigen auch diese nicht in allen Eigenschaften.The silicones have been around for a long time because of their extremely low temperature coefficient Viscosity is a useful, but also an expensive class of such liquids. They also belong to the group of relatively flame-retardant substances (cf. W. No 11, »Chemistry und Technologie der Silikone ”, Verlag Chemie, Weinheim [1960], pp.410 to 425). Petroleum fractions from the higher temperature range with suitable physical properties also widely used, but they have a high temperature coefficient viscosity and can only be used to a limited extent due to their flammability (cf. N. W. Furby, R.L. Peeler and R. 1. Stirton, "Oronite High Temperature Hydraulic Fluids", Trans. Am. Soc. Mechan. Eng., 79 [1957], pp. 1029-1037). Esters are also the phosphorous acid and the phosphoric acid and orthosilicic acid esters for this purpose in use (see German patents 916 340 and 937 946). But satisfy even these not in all properties.
Es wurde nun gefunden, daß bei vorgegebener absoluter Viskosität, Ester definierter Di- und Polykieselsäuren eine um so flachere Viskositäts-Temperatur-Kurve haben, je mehr der Kieselsäureanteil gegenüber dem organischen Esterrest überwiegt. Mit anderen Worten ausgedrückt kann man sagen, daß Ester der Polykieselsäuren in der Viskosität den Silikonen immer ähnlicher werden, je komplexer der Polykieselsäurerest ist. Gemäß der vorliegenden Erfindung werden daher langkettige (C6 bis C15) Alkylester oder Cycloalkylester von Polykieselsäuren mit 2 bis 40 Si-Atomen, vorzugsweise 4 bis 20 Si-Atomen, als Hydraulikflüssigkeiten verwendet.It has now been found that for a given absolute viscosity, Esters of defined di- and polysilicic acids have a flatter viscosity-temperature curve the more the silica fraction predominates over the organic ester residue. In other words, it can be said that esters of polysilicic acids in The more complex the polysilicic acid residue, the closer it is to the viscosity of the silicones is. According to the present invention, therefore, long chain (C6 to C15) alkyl esters or cycloalkyl esters of polysilicic acids with 2 to 40 Si atoms, preferably 4 up to 20 Si atoms, used as hydraulic fluids.
Es ist ersichtlich, daß mit dem Überwiegen des Si02-Anteils gegenüber
dem organischen Rest auch die Entflammungsgefahren entsprechend geringer werden.
Ferner ist der Stockpunkt der Polyester deutlich niedriger als der der Orthoester.
Da weiterhin die Polykieselsäureester viel wohlfeiler sind als die Silikone, ist
auch diesbezüglich ein Fortschritt gegeben.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP1269A DE1269758B (en) | 1965-09-30 | 1965-09-30 | Hydraulic fluids |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP1269A DE1269758B (en) | 1965-09-30 | 1965-09-30 | Hydraulic fluids |
| DED0048320 | 1965-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1269758B true DE1269758B (en) | 1968-06-06 |
Family
ID=25751206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP1269A Pending DE1269758B (en) | 1965-09-30 | 1965-09-30 | Hydraulic fluids |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1269758B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2346538A1 (en) * | 1972-09-18 | 1974-04-11 | Gen Electric | SILICONE FLUID USED AS BRAKE FLUID |
-
1965
- 1965-09-30 DE DEP1269A patent/DE1269758B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2346538A1 (en) * | 1972-09-18 | 1974-04-11 | Gen Electric | SILICONE FLUID USED AS BRAKE FLUID |
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