DE1057270B - Fire-proof lubricants, control fluids and hydraulic oils - Google Patents

Fire-proof lubricants, control fluids and hydraulic oils

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Publication number
DE1057270B
DE1057270B DEF22106A DEF0022106A DE1057270B DE 1057270 B DE1057270 B DE 1057270B DE F22106 A DEF22106 A DE F22106A DE F0022106 A DEF0022106 A DE F0022106A DE 1057270 B DE1057270 B DE 1057270B
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Germany
Prior art keywords
chlorinated
lubricants
fire
weight
control 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.)
Pending
Application number
DEF22106A
Other languages
German (de)
Inventor
Dr Walter Droste
Dr Hans-Werner Kauczor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEF22106A priority Critical patent/DE1057270B/en
Publication of DE1057270B publication Critical patent/DE1057270B/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M3/00Liquid 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
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • C10M2211/024Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aromatic
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/06Perfluorinated compounds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/08Halogenated waxes
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/02Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/04Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06Perfluoro polymers
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06Perfluoro polymers
    • C10M2213/062Polytetrafluoroethylene [PTFE]
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04Phosphate esters
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04Phosphate esters
    • C10M2223/041Triaryl phosphates
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04Phosphate esters
    • C10M2223/042Metal salts thereof
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/08Hydraulic 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)
  • Lubricants (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

Brandfeste Schmiermittel, Steuerflüssigkeiten und Hydrauliköle Brandfeste Schmiermittel, Steuerflüssigkeiten und Hydrauliköle auf der Basis von chlorierten Diphenylen, chlorierten Terphenylen und chlorierten Paraffinen oder auf der Basis von Alkyl-, Aryl- oder Alkylaryl-Phosphorsäure-Estern sowie deren Mischungen hat man zur Verbesserung des Viskositätsindexes bereits mit hochmolekularen organischen löslichen Stoffen, wie z. B. mit Polybutenen, Polymethacrylaten oder alkylierten Polystyrolen versetzt. Diese Zusatzstoffe stellen jedoch die Brandfestigkeit der Schmiermittel, Steuerflüssigkeiten und Hydrauliköle sehr in Frage.Fire-proof lubricants, control fluids and hydraulic oils. Fire-proof Lubricants, control fluids and hydraulic oils based on chlorinated Diphenylene, chlorinated terphenylene and chlorinated paraffins or based on of alkyl, aryl or alkylaryl phosphoric acid esters and mixtures thereof to improve the viscosity index already with high molecular weight organic soluble substances, such as B. with polybutenes, polymethacrylates or alkylated Polystyrenes added. However, these additives provide the fire resistance of the Lubricants, control fluids and hydraulic oils are very much in question.

Es wurde nun gefunden, daß man brandfeste Schmiermittel, Steuerflüssigkeiten und Hydrauliköle der angeführten Art hinsichtlich des Viskositätsindexes erheblich verbessern kann, wenn man ihnen chlorierten Naturkautschuk, chlorierten synthetischen Kautschuk, Polyvinylchlorid oder feste vinylchloridbaltige Mischpolymerisate zusetzt. Die Gefahr einer Beeinträchtigung der Brandfestigkeit der Schmiermittel, Steuerflüssigkeiten oder Hydrauliköle ist bei einem Einsatz derartiger Stoffe weitaus geringer; sie ist praktisch beseitigt,wenn die zugesetzten Stoffe soviel Halogen enthalten, daß sie selbst brandfest sind.It has now been found that fire-resistant lubricants, control fluids and hydraulic oils of the type mentioned are considerable with regard to the viscosity index Can improve if you give them chlorinated natural rubber, chlorinated synthetic Adding rubber, polyvinyl chloride or solid copolymers containing vinyl chloride. The risk of impairment of the fire resistance of the lubricants, control fluids or hydraulic oils are much lower when such substances are used; she is practically eliminated when the added substances contain so much halogen that they are fire resistant themselves.

Zweckmäßige Mengenverhältnisse lassen sich durch Vorversuche von Fall zu Fall leicht ermitteln. Im allgemeinen verwendet man die Zusatzstoffe vorzugsweise in Mengen von 1 bis 25 Gewichtsprozent, bezogen auf die in Betracht kommenden Schmiermittel, Steuerflüssigkeiten bzw. Hydrauliköle.Appropriate proportions can be determined by preliminary tests on a case-by-case basis easy to determine on a case-by-case basis. In general, the additives are preferably used in amounts of 1 to 25 percent by weight, based on the lubricants in question, Control fluids or hydraulic oils.

Es ist ferner bereits bekannt, Schmiermitteln auf der Basis der hier in Betracht gezogenen halogenhaltigen Kohlenwasserstoffe Kieselsäureester zuzusetzen; außerdem ist bereits vorgeschlagen worden, Mischungen von aus Chloroform oder Tetrachlorkohlenstoff und Monochlortrifluoräthylen oder Tetrafluoräthylen aufgebauten hochmolekularen Stoffen als Schmiermittel zu verwenden. Beispiel 1 In 98,5 Gewichtsteilen Trichlordiphenyl, die als Schmiermittel dienen sollen, werden bei 70 bis 80°C 1,5 Gewichtsteile chlorierter Naturkautschuk gelöst, dessen 20°/oige Lösung in Butanol-Xylol (95: 5) eine Viskosität von etwa 90 cSt besitzt. Der Viskositätsindex des Schmiermittels wird durch diesen Zusatz erheblich verbessert, wie die nachfolgende Tabelle zeigt. Viskosität des Schmiermittels in cSt ohne Zusatz mit Zusatz Temperatur 20,0°C ................. 55,4 273,8 37,8°C ................. 15,76 67,0 50,0°C ................. 8,75 35,2 98,8°C ................. 2,2 8,06 Viskositätsindex ........... -290 +96 Beispiel 2 In einem als Hydrauliköl vorgesehenen Gemisch aus 50 Gewichtsteilen Hexachlordiphenyl, 20 Gewichtsteilen Pentachlordiphenyl und 30 Gewichtsteilen Trichlorbenzol werden bei 70 bis 80°C 2,56 Gewichtsteile des in Beispiel 1 angeführten chlorierten Naturkautschuks gelöst. Der Viskositätsindex des Hydrauliköls wird durch diesen Zusatz erheblich verbessert. Viskosität des Hydrauliköls ohne Zusatz I mit Zusatz Temperatur 20,0°C ................. 39,0 225,2 37,8°C ................. 13,4 67,4 50,0°C ................. 8,0 37,9 98,8°C ................. 2,0 8,63 Viskositätsindex ........... -264 +108 Beispiel 3 In 100 Gewichtsteilen Trichlordiphenyl, die als Steuer-Flüssigkeit dienen sollen, werden bei 80 bis 100°C 2,56 Gewichtsteile eines in üblicher Weise hergestellten festen Mischpolymerisates aus 73 Gewichtsteilen Vinylchlorid und 27 Gewichtsteilen Vinylisobutyläther gelöst. Der Viskositätsindex der Steuerflüssigkeit wird durch diesen Zusatz erheblich verbessert. r Viskosität der Steuerflüssigkeit ohne Zusatz ! mit Zusatz Temperatur 20,0°C ............... 55,4 138,9 37,8°C ............... 15,76 34,2 50,0°C .............. 8,75 18,5 98,8°C ................. 2,2 4,23 Viskositätsindex ........... -290 -61 Beispiel 4 In 100 Gewichtsteilen Trikresylphosphat, die als Hydrauliköl dienen sollen, werden bei 70 bis 90°C 2,4 Gewichtsteile des im Beispiel 1 angeführten chlorierten Naturkautschuks gelöst. Der Viskositätsindex des Hydrauliköls wird durch diesen Zusatz erheblich verbessert. Viskosität des Hydrauliköls ohne Zusatz I mit Zusatz Temperatur 20,0° C ................. 67,8 183,0 37,8° C ................. 25,5 57,9 50,0°C ................. 15,5 33,2 98,8°C ................. 3,8 7,55 Viskositätsindex ........... -18 -r101 Beispiel 5 In einer als Hydrauliköl zu verwendenden Mischung aus 50 Gewichtsteilen Pentachlordiphenyl und 50 Gewichtsteilen Diphenylcresylphosphat werden bei 70 bis 90°C 2,56 Gewichtsteile des im Beispiel 1 angeführten chlorierten Naturkautschuks gelöst. Der Viskositätsindex des Hydrauliköls wird durch diesen Zusatz erheblich verbessert. Viskosität des Hydrauliköls ohne Zusatz I mit Zusatz Temperatur 20,0.°C .............................. 135,8 728,0 37,8°C .............................. 38,0 156,2 50,0°C .............................. 19,7 75,3 98,8°C .............................. 3,75 12,6 Viskositätsindex ........................ -250 +69 Der Viskositätsindex ist nach Zerbe, Mineralöle und verwandte Produkte (1952), S.32 bis 38, bestimmt worden.It is also already known that lubricants based on the halogen-containing hydrocarbons considered here can be added to silicic acid esters; In addition, it has already been proposed to use mixtures of high molecular weight substances composed of chloroform or carbon tetrachloride and monochlorotrifluoroethylene or tetrafluoroethylene as lubricants. EXAMPLE 1 At 70 to 80 ° C., 1.5 parts by weight of chlorinated natural rubber are dissolved in 98.5 parts by weight of trichlorodiphenyl, which is to serve as a lubricant cSt owns. The viscosity index of the lubricant is significantly improved by this addition, as the following table shows. Viscosity of the Lubricant in cSt without addition with addition temperature 20.0 ° C ................. 55.4 273.8 37.8 ° C ................. 15.76 67.0 50.0 ° C ................. 8.75 35.2 98.8 ° C ................. 2.2 8.06 Viscosity index ........... -290 +96 Example 2 2.56 parts by weight of the chlorinated natural rubber listed in Example 1 are dissolved at 70 to 80 ° C. in a mixture of 50 parts by weight of hexachlorodiphenyl, 20 parts by weight of pentachlorodiphenyl and 30 parts by weight of trichlorobenzene. The viscosity index of the hydraulic oil is considerably improved by this addition. viscosity of the hydraulic oil without addition I with addition temperature 20.0 ° C ................. 39.0 225.2 37.8 ° C ................. 13.4 67.4 50.0 ° C ................. 8.0 37.9 98.8 ° C ................. 2.0 8.63 Viscosity index ........... -264 +108 EXAMPLE 3 In 100 parts by weight of trichlorodiphenyl, which are to serve as the control fluid, 2.56 parts by weight of a conventionally prepared solid copolymer of 73 parts by weight of vinyl chloride and 27 parts by weight of vinyl isobutyl ether are dissolved at 80 to 100.degree. The viscosity index of the control fluid is considerably improved by this addition. r viscosity of the control fluid without additives! with additional temperature 20.0 ° C ............... 55.4 138.9 37.8 ° C ............... 15 , 76 34.2 50.0 ° C .............. 8.75 18.5 98.8 ° C ............... .. 2.2 4.23 Viscosity index ........... -290 -61 Example 4 In 100 parts by weight of tricresyl phosphate, which are to serve as hydraulic oil, 2.4 parts by weight of the im Example 1 listed chlorinated natural rubber dissolved. The viscosity index of the hydraulic oil is considerably improved by this addition. viscosity of the hydraulic oil without addition I with addition temperature 20.0 ° C ................. 67.8 183.0 37.8 ° C ................. 25.5 57.9 50.0 ° C ................. 15.5 33.2 98.8 ° C ................. 3.8 7.55 Viscosity index ........... -18 -r101 Example 5 2.56 parts by weight of the chlorinated natural rubber listed in Example 1 are dissolved in a mixture of 50 parts by weight of pentachlorodiphenyl and 50 parts by weight of diphenylcresyl phosphate to be used as hydraulic oil. The viscosity index of the hydraulic oil is considerably improved by this addition. viscosity of the hydraulic oil without addition I with addition temperature 20.0. ° C .............................. 135.8 728.0 37.8 ° C .............................. 38.0 156.2 50.0 ° C .............................. 19.7 75.3 98.8 ° C .............................. 3.75 12.6 Viscosity index ........................ -250 +69 The viscosity index has been determined according to Zerbe, Mineralöle und related products (1952), pages 32 to 38.

Claims (1)

PATENTANSPRUCH: Verwendung von chloriertem Naturkautschuk, chloriertem synthetischem Kautschuk, Polyvinylchlorid oder festen vinylchloridhaltigen Mischpolymerisaten als Zusätze zu brandfesten Schmiermitteln, Steuerflüssigkeiten und Hydraulikölen auf der Basis von chlorierten Diphenylen, chlorierten Terphenylen und chlorierten Paraffinen und/oder auf der Basis von Alkyl-, Aryl- bzw. Alkylaryl-Phosphorsäure-Estern. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 865172; USA.-Patentschriften Nr. 2 695 880, 2 689 872, 2 612 529, 2 602 824, 2 582 283, 2 542 286; britische Patentschrift Nr. 583 874; N i els : Chlorkautschuk und die übrigen Halogenverbindungen des Kautschuks (1937), S. 45, 56.PATENT CLAIM: Use of chlorinated natural rubber, chlorinated synthetic rubber, polyvinyl chloride or solid copolymers containing vinyl chloride as additives to fire-resistant lubricants, control fluids and hydraulic oils based on chlorinated diphenyls, chlorinated terphenyls and chlorinated paraffins and / or based on alkyl, aryl or Alkylaryl phosphoric acid esters. Documents considered: German Patent No. 865172; U.S. Patent Nos. 2,695,880, 2,689,872, 2,612,529, 2,602,824, 2,582,283, 2,542,286 ; British Patent No. 583,874; N i els: Chlorinated rubber and the other halogen compounds of rubber (1937), pp. 45, 56.
DEF22106A 1957-01-10 1957-01-10 Fire-proof lubricants, control fluids and hydraulic oils Pending DE1057270B (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
DEF22106A DE1057270B (en) 1957-01-10 1957-01-10 Fire-proof lubricants, control fluids and hydraulic oils

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB583874A (en) * 1943-04-23 1947-01-01 Du Pont Production of organic fluorine compounds
US2542286A (en) * 1944-09-26 1951-02-20 Shell Dev Lubricating oil containing chlorinated cyclic polymer
US2582283A (en) * 1950-08-10 1952-01-15 Socony Vacuum Oil Co Inc Fluorine-containing lubricant
US2602824A (en) * 1949-03-31 1952-07-08 American Cyanamid Co Method of producing liquid polymeric chlorotrifluoroethylene
US2612529A (en) * 1949-01-12 1952-09-30 Socony Vacuum Oil Co Inc Higher molecular weight fluorinecontaining compounds
DE865172C (en) * 1950-12-13 1953-01-29 Bayer Ag Lubricants, hydraulic, dielectric fluids, etc. like
US2689872A (en) * 1950-06-21 1954-09-21 Union Carbide & Carbon Corp Process for polymerizing chlorotrifluoroethylene
US2695880A (en) * 1952-02-21 1954-11-30 Du Pont Telomer greases

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB583874A (en) * 1943-04-23 1947-01-01 Du Pont Production of organic fluorine compounds
US2542286A (en) * 1944-09-26 1951-02-20 Shell Dev Lubricating oil containing chlorinated cyclic polymer
US2612529A (en) * 1949-01-12 1952-09-30 Socony Vacuum Oil Co Inc Higher molecular weight fluorinecontaining compounds
US2602824A (en) * 1949-03-31 1952-07-08 American Cyanamid Co Method of producing liquid polymeric chlorotrifluoroethylene
US2689872A (en) * 1950-06-21 1954-09-21 Union Carbide & Carbon Corp Process for polymerizing chlorotrifluoroethylene
US2582283A (en) * 1950-08-10 1952-01-15 Socony Vacuum Oil Co Inc Fluorine-containing lubricant
DE865172C (en) * 1950-12-13 1953-01-29 Bayer Ag Lubricants, hydraulic, dielectric fluids, etc. like
US2695880A (en) * 1952-02-21 1954-11-30 Du Pont Telomer greases

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