CH313997A - Process for the preparation of a viscous liquid with high flash point and low vapor pressure suitable as a lubricant, sealant and heat transfer medium - Google Patents
Process for the preparation of a viscous liquid with high flash point and low vapor pressure suitable as a lubricant, sealant and heat transfer mediumInfo
- Publication number
- CH313997A CH313997A CH313997DA CH313997A CH 313997 A CH313997 A CH 313997A CH 313997D A CH313997D A CH 313997DA CH 313997 A CH313997 A CH 313997A
- Authority
- CH
- Switzerland
- Prior art keywords
- lubricant
- heat transfer
- vapor pressure
- transfer medium
- flash point
- Prior art date
Links
Classifications
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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
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
- C10M2201/042—Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride
-
- 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
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
-
- 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
- C10N2040/30—Refrigerators lubricants or compressors lubricants
-
- 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
- C10N2040/32—Wires, ropes or cables lubricants
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- 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
- C10N2040/34—Lubricating-sealants
-
- 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
- C10N2040/36—Release agents or mold release agents
-
- 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
- C10N2040/38—Conveyors or chain belts
-
- 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
- C10N2040/40—Generators or electric motors in oil or gas winning field
-
- 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
- C10N2040/42—Flashing oils or marking oils
-
- 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
- C10N2040/44—Super vacuum or supercritical use
-
- 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
- C10N2040/50—Medical uses
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Lubricants (AREA)
Description
Verfahren zur Herstellung einer als Schmier-, Dichtungs- und Wärmeübertragungsmittel geeigneten viskosen Flüssigkeit mit hohem Flammpunkt und niedrigem Dampfdruck Vorliegende Erfindung bezieht sich auf ein Verfahren zur Herstellung einer als Schmier-, Dichtungs- und Wärmeübertragungsmittel ge eigneten viskosen Flüssigkeit mit hohem Flammpunkt und niedrigem Dampfdruck, das dadurch gekennzeichnet ist, dass man ein Ge misch von monomeren Tri-,
Di- und Mono- aryloxysiilanen, in denen die nicht durch die Aryloxygruppe abgesättigten Valenzen durch bei der Kondensation sich abspaltende Sub- stituenten besetzt sind, und in dem das Tri- itnd Di-Homologe vorwiegen, in Gegenwart einer geringen Menge Wasser der Konden sation unterwirft.
Das als Ausgangsmaterial verwendete Ge misch der Monomeren kann erhalten werden durch partielle Hydrolyse von Tetra-aryloxy- silan unter solchen Bedingungen, dass die drei homologen Öxy-aryloxysilane in wechselndem Mengenverhältnis nebeneinander entstehen, das Tri- und Di-Homologe aber vorwiegen.
Eine analoge Arbeitsweise ist in der schweiz. Patentschrift Nr. 278108 für Tetr.aphenyIsili- kate und Tetrakresylsilikate beschrieben wor den.
Man kann das Monomerengemisch aber auch direkt erhalten, indem man ein Mal Siliziumtetrachlorid mit weniger als 4 Mol Aryloxyverbindung umsetzt.
Die Kondensation verläuft bei Verwen dung von Oxy-aryloxysilanen nach dem Schema
EMI0001.0053
und bei Verwendung von Aryloxyehlorsilanen nach dem Schema
EMI0001.0056
Beispiele für Ar sind Isopröpylphenyl, Di- amylphenyl, B-Naphthyl usw.
Das bei der Kondensation, des Monomeren- gemischeserhaltene Prod2lkt ist zufolge seiner Viskosität und seiner Hitzebeständigkeit ein ideales Hochtemp.eraturschmiermittel. Es be steht keine Gefahr der Karbonisiierung,
Schlammbildung oder Bildung korrodierender Oxydationsprodukte. Die einzige Beschrän kung hinsichtlich seiner Verwendung ist seine geringe Beständigkeit gegen Hydrolyse, so dass es in Fällen, wo ein Kontakt mit Wasser oder Dampf sich nicht vermeiden lässt, ungeeignet ist.
Die Schmierwirkung des Gemisches kann stark erhöht werden, wenn man ihm kollo idalen Graphit zusetzt, und infolge seiner aro matischen Natur, die es zu beinahe idealen Netz- und Dispergiermitteln für Graphit und andere Arten des freien Kohlenstoffes macht, erträgt es grössere Mengen Graphit als irgend ein bekanntes Schmiermittel.
Das Gemisch weist auch einen Dampfdruck auf, der im Hinblick auf seine Viskosität ausserordentlich niedrig ist und eignet sich deshalb als Vakuumdichtung in Hochvakuum- pumpen und als Schmiermittel im Hoch vakuum.
Es kann ferner auch als flüssiges Wärme übertragungsmittel verwendet werden, und, da sein Flammpunkt beträchtlich höher liegt ass derjenige der Tetrasilane, wird die Feuer gefahr auf ein Minimum reduziert.
Process for the preparation of a viscous liquid with a high flash point and low vapor pressure suitable as a lubricant, sealant and heat transfer medium. which is characterized in that a mixture of monomeric tri-,
Di- and monoaryloxy silanes in which the valences not saturated by the aryloxy group are occupied by substituents which split off during the condensation and in which the tri and di homologs predominate and subject to condensation in the presence of a small amount of water .
The mixture of monomers used as the starting material can be obtained by partial hydrolysis of tetra-aryloxysilane under such conditions that the three homologous oxy-aryloxysilanes are formed side by side in varying proportions, but the tri- and di-homologs predominate.
The same way of working is used in Switzerland. Patent No. 278108 for Tetr.aphenyIsili- kate and Tetrakresylsilikate the wor described.
However, the monomer mixture can also be obtained directly by reacting silicon tetrachloride once with less than 4 mol of aryloxy compound.
The condensation proceeds when using oxy-aryloxysilanes according to the scheme
EMI0001.0053
and when using aryloxyehlorsilanen according to the scheme
EMI0001.0056
Examples of Ar are isopropylphenyl, diamylphenyl, B-naphthyl, etc.
The product obtained during the condensation of the monomer mixture is, due to its viscosity and its heat resistance, an ideal high-temperature lubricant. There is no risk of carbonization,
Formation of sludge or corrosive oxidation products. The only limitation on its use is its poor resistance to hydrolysis, making it unsuitable in cases where contact with water or steam cannot be avoided.
The lubricity of the mixture can be greatly increased by adding colloidal graphite to it, and because of its aromatic nature, which makes it almost ideal wetting and dispersing agents for graphite and other types of free carbon, it can withstand larger amounts of graphite than any a well known lubricant.
The mixture also has a vapor pressure which is extremely low in terms of its viscosity and is therefore suitable as a vacuum seal in high vacuum pumps and as a lubricant in high vacuum.
It can also be used as a liquid heat transfer medium and, since its flash point is considerably higher than that of tetrasilanes, the risk of fire is reduced to a minimum.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB313997X | 1949-01-25 | ||
GB220849X | 1949-08-22 | ||
GB50150X | 1950-01-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH313997A true CH313997A (en) | 1956-05-31 |
Family
ID=27254545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH313997D CH313997A (en) | 1949-01-25 | 1950-01-12 | Process for the preparation of a viscous liquid with high flash point and low vapor pressure suitable as a lubricant, sealant and heat transfer medium |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH313997A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1894988A2 (en) * | 2006-08-31 | 2008-03-05 | Chevron Oronite Company LLC | Tetraoxy-silane lubricating oil compositions |
US8153566B2 (en) | 2008-09-30 | 2012-04-10 | Cherron Oronite Company LLC | Lubricating oil compositions |
-
1950
- 1950-01-12 CH CH313997D patent/CH313997A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1894988A2 (en) * | 2006-08-31 | 2008-03-05 | Chevron Oronite Company LLC | Tetraoxy-silane lubricating oil compositions |
EP1894988A3 (en) * | 2006-08-31 | 2010-07-28 | Chevron Oronite Company LLC | Tetraoxy-silane lubricating oil compositions |
US8067346B2 (en) | 2006-08-31 | 2011-11-29 | Chevron Oronite Company Llc | Tetraoxy-silane lubricating oil compositions |
US8153566B2 (en) | 2008-09-30 | 2012-04-10 | Cherron Oronite Company LLC | Lubricating oil compositions |
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