[go: up one dir, main page]

DE1261263B - Process for the preparation of solid lubricant mineral oil dispersions - Google Patents

Process for the preparation of solid lubricant mineral oil dispersions

Info

Publication number
DE1261263B
DE1261263B DEM63062A DEM0063062A DE1261263B DE 1261263 B DE1261263 B DE 1261263B DE M63062 A DEM63062 A DE M63062A DE M0063062 A DEM0063062 A DE M0063062A DE 1261263 B DE1261263 B DE 1261263B
Authority
DE
Germany
Prior art keywords
mineral oil
solid lubricant
dispersions
preparation
oil dispersions
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
DEM63062A
Other languages
German (de)
Inventor
Dr Joseph Gaensheimer
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.)
MOLYKOTE PRODUKTIONSGESELLSCHA
Original Assignee
MOLYKOTE PRODUKTIONSGESELLSCHA
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 MOLYKOTE PRODUKTIONSGESELLSCHA filed Critical MOLYKOTE PRODUKTIONSGESELLSCHA
Priority to DEM63062A priority Critical patent/DE1261263B/en
Priority claimed from GB46940/65A external-priority patent/GB1147649A/en
Publication of DE1261263B publication Critical patent/DE1261263B/en
Pending legal-status Critical Current

Links

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
    • C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
    • C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • 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
    • C10M2201/06—Metal compounds
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/066—Molybdenum sulfide
    • 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
    • C10M2201/10—Compounds containing silicon
    • C10M2201/102—Silicates
    • 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
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/022—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amino group
    • 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
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/022—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amino group
    • C10M2217/023—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amino group the amino group containing an ester bond
    • 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
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/028—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
    • 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
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
    • 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
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/015—Dispersions of solid lubricants
    • C10N2050/02—Dispersions of solid lubricants dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Int. α.:Int. α .:

ClOmClOm

Deutsche Kl.: 23 c -1/01 German class: 23 c - 1/01

Nummer: 1261 263 Number: 1261 263

Aktenzeichen: M 63062IV c/23 c File number: M 63062IV c / 23 c

Anmeldetag: 9. November 1964 Filing date: November 9, 1964

Auslegetag: 15. Februar 1968Open date: February 15, 1968

Es ist bekannt, daß man stabile kolloidale Graphit- und Molybdändisulfid-Mineralöldispersionen durch Mahlung von Graphit bzw. Molybdändisulfid in Wasser und anschließender überführung in die Mineralölphase herstellen kann. Auch ist es aus der deutschen Patentschrift 1 025 085 bekannt, durch Zusatz von Aminen zu in Mineralöl dispergiertem Molybdändisulfid dessen Absatzgeschwindigkeit zu vermindern. Schließlich ist es auch bekannt, basischen Stickstoff enthaltende Polymerisate Heizölen ro zuzusetzen, um die Schlammbildung zu vermindern und die Verwendung solcher Verbindungen als Detergentien in Schmierölen.It is known to use stable colloidal graphite and molybdenum disulfide mineral oil dispersions Grinding of graphite or molybdenum disulfide in water and subsequent transfer to the Can produce mineral oil phase. It is also known from German patent specification 1 025 085 by Addition of amines to molybdenum disulfide dispersed in mineral oil increases its sales speed Reduce. Finally, it is also known to use basic nitrogen-containing polymers, heating oils ro add to reduce sludge formation and the use of such compounds as Detergents in lubricating oils.

Es wurde nun gefunden, daß es in überraschend einfacher und wirksamer Weise gelingt, Mahlung in Wasser dann zu umgehen, wenn gemäß der Erfindung das Vermählen von Festschmierstoffen in Mineralölen in Gegenwart von tertiäre Aminogruppen enthaltenden polymeren Methacrylaten erfolgt, wobei kolloidale stabile Festschmierstoffmineralöldispersionen erhalten werden. Tatsächlich sind öldispersionen, in welchen Festschmierstoffteilchen enthalten sind, deren Vermahlung in Anwesenheit von Methacrylaten, die eine tertiäre Aminogruppe als Substituenten aufweisen, erfolgte, ausgezeichnet als Schmierstoffe verwendbar.It has now been found that it is possible to grind in a surprisingly simple and effective manner to deal with in water when, according to the invention, the grinding of solid lubricants in Mineral oils in the presence of tertiary amino groups-containing polymeric methacrylates takes place, whereby colloidal stable solid lubricant mineral oil dispersions are obtained. Indeed are oil dispersions in which solid lubricant particles are contained, their grinding in the presence of methacrylates that have a tertiary amino group as a substituent, excellent as a lubricant.

Dabei kann jede Art von Mühle verwendet werden, wie Vibrationsmühlen, Kugelmühlen, Kneter, Dreiwalzenstühle. Die erfindungsgemäß verwendeten aminsubstituierten polymeren Methacrylate werden bei der Mahlung überraschenderweise besonders intensiv von den Festschmierstoffoberflächen aufgenommen, und die erhaltenen Dispersionen zeigen eine besonders hohe Stabilität in der Mischung mit legierten oder auch unlegierten Schmierölen, insbesondere Mineralölen. Die überraschend hohe Wirksamkeit dieser tertiäre Aminogruppen aufweisenden polymeren Methacrylate erlaubt auch die bislang nicht durchführbare Vermahlung in Knetern oder Walzenstühlen, d. h. ohne Mahlkugeln, wodurch Erzeugnisse gewährleistet werden, welche frei sind von dem von Mahlkugeln stammenden Metallabrieb.Any type of mill can be used, such as vibration mills, ball mills, kneaders, three-roll mills. The amine-substituted polymeric methacrylates used according to the invention are Surprisingly absorbed particularly intensively by the solid lubricant surfaces during grinding, and the dispersions obtained show a particularly high stability in the mixture with alloyed or unalloyed lubricating oils, especially mineral oils. The surprisingly high one Effectiveness of these tertiary amino group-containing polymeric methacrylates also allows grinding in kneaders or roller mills, which was previously not possible, d. H. without grinding balls, thereby ensuring products which are free from that derived from grinding balls Metal abrasion.

Bei den nach den bisherigen Verfahren hergestellten Festschmierstoffdispersionen läßt sich nicht vermeiden, daß feinste Metall- oder Eisenteilchen, nämlich der erwähnte Abrieb, in die Dispersionen gelangen und bei der Schmierung mit diesen Dispersionen schädliche Wirkungen" auftreten.In the case of the solid lubricant dispersions produced by the previous processes, it is not possible to avoid that the finest metal or iron particles, namely the aforementioned abrasion, get into the dispersions and harmful effects "occur when lubricating with these dispersions.

Selbstverständlich ist auch die Herstellung von Konzentraten von Festschmierstoffteilchen, deren Vermahlung also in Anwesenheit von tertiäre Amino-Verf ahren zur HerstellungOf course, the production of concentrates of solid lubricant particles is also possible Milling in the presence of tertiary amino processes for production

von Festschmierstoffmineralöldispersionenof solid lubricant mineral oil dispersions

Anmelder:Applicant:

Molykote Produktionsgesellschaft m. b. H.,Molykote production company m. B. H.,

8000 München 19, Arnulfstr. 718000 Munich 19, Arnulfstr. 71

Als Erfinder benannt:
Dr. Joseph Gänsheimer,
8000 München-ObermenzingNamed as inventor:
Dr. Joseph Gänsheimer,
8000 Munich-Obermenzing

gruppen aufweisenden Methacrylaten erfolgte, möglich. Diese Konzentrate können dann mit den Schmierölen zur Herstellung von öldispersionen der gewünschten Konzentration verschnitten werden.methacrylates containing groups, possible. These concentrates can then be used with the lubricating oils be blended to produce oil dispersions of the desired concentration.

Als Ulbasis können beliebige Schmieröle verwendet werden, wenn auch im allgemeinen Mineralöle bevorzugt sind. Die Endprodukte können beliebige weitere, an sich bekannte Schmierölzusätze, wie das Hochdruckaufnahmevermögen verbessernde Zusätze, Korrosionsschutzmittel, Metalldesaktivatoren, Detergentien, viskositätsbeeinflussende Stoffe enthalten.Any lubricating oil can be used as the base, albeit generally mineral oils are preferred. The end products can contain any other known lubricating oil additives, such as additives that improve the high pressure absorption capacity, anti-corrosion agents, metal deactivators, Contain detergents, viscosity-influencing substances.

Als Festschmierstoffe werden im allgemeinen solche mit Schichtgitterstruktur, insbesondere M0S2, aber auch Zinksulfid, Erdalkalisulfide, Graphit, Silikate verwendet.Solid lubricants are generally those with a layer lattice structure, in particular M0S2, but also zinc sulfide, alkaline earth metal sulfides, graphite, silicates are used.

Die erfindungsgemäß verwendeten, tertiäre Aminogruppen als Substituenten aufweisenden polymeren Methacrylate sind hochmolekulare Verbindungen und von den in der deutschen Patentschrift 1 025 085 beschriebenen öllöslichen oder öldispergierbaren Stickstoffverbindungen der allgemeinen FormelThe polymeric polymers which are used according to the invention and have tertiary amino groups as substituents Methacrylates are high molecular weight compounds and of those in German Patent 1,025,085 described oil-soluble or oil-dispersible nitrogen compounds of the general formula

RiRi

R2 — N — R3 R 2 - N - R 3

die niedermolekular sind, grundsätzlich verschieden.which are low molecular weight, fundamentally different.

In der Tat sind grundsätzliche Unterschiede nicht nur in der chemischen Struktur, sondern überraschenderweise auch in der Wirkung gegeben, wie sich aus den nachfolgenden Vergleichsversuchen entnehmen läßt.In fact, fundamental differences are not just in chemical structure, but surprisingly also given in the effect, as can be seen from the following comparative tests leaves.

In legierten ölen wurden 0,075gewichtsprozentige Molybdändisulfiddispersionen durch Vermischen mitIn alloyed oils, 0.075 weight percent molybdenum disulfide dispersions were made by mixing with

809 508/315809 508/315

5%igen Molybdändisulfiddispersionen hergestellt. Diese 5%igen Molybdändisulfiddispersionen waren einmal in bekannter Weise mit Dihydroabietylamin und zum anderen in erfindungsgemäßer Weise herhergestellt worden. Zur Mischung wurden legierte öle verwendet. Es wurde das Absetzverhalten bei 500C beobachtet. Während die unter Verwendung von Dihydroabietylamin in bekannter Weise hergestellten Dispersionen nach 5 Tagen beträchtliche Sedimentation zeigten, wiesen die erfindungsgemäß hergestellten Zubereitungen noch nach 26 Tagen völlige Stabilität und keinerlei Bodensatz auf.5% molybdenum disulfide dispersions produced. These 5% strength molybdenum disulfide dispersions had been produced on the one hand in a known manner with dihydroabietylamine and on the other hand in the manner according to the invention. Alloyed oils were used for the mixture. It has been observed that settling at 50 0 C. While the dispersions prepared in a known manner using dihydroabietylamine showed considerable sedimentation after 5 days, the preparations prepared according to the invention showed complete stability and no sedimentation whatsoever even after 26 days.

Beispiel 1example 1

In eine Vibrationsmühle werden 35 Gewichtsteile Mineralöl, 10 Gewichtsteile tertiäre Aminogruppen aufweisendes polymeres Methacrylat und 55 Gewichtsteile Molybdändisulfid von einer Teilchengröße von durchschnittlich 100 μ eingebracht und 150 Stunden gemahlen.35 parts by weight of mineral oil and 10 parts by weight of tertiary amino groups are placed in a vibration mill comprising polymeric methacrylate and 55 parts by weight of molybdenum disulfide of one particle size introduced by an average of 100 μ and ground for 150 hours.

Beispiel 2Example 2

In einem Kneter werden 85 Gewichtsteile Molybdändisulfid mit einer durchschnittlichen Teilchengröße von 100 μ, 7,5 Gewichtsteile Mineralöl und 7,5 Gewichtsteile tertiäre Aminogruppen enthaltendes polymeres Methacrylat 20 Stunden verknetet.In a kneader, 85 parts by weight of molybdenum disulfide with an average particle size are added of 100 μ, 7.5 parts by weight of mineral oil and 7.5 parts by weight of tertiary amino groups polymeric methacrylate kneaded for 20 hours.

Claims (1)

Patentanspruch:Claim: Verfahren zur Herstellung von Schmierstoffen durch Zerkleinerung von bekannten Festschmierstoffen, insbesondere mit Schichtgitterkristallstruktur, in Schmierölen in Gegenwart von polymeren Verbindungen, dadurch gekennzeichnet, daß man als polymere Verbindung ein Homopolymerisat eines tertiäre Aminogruppen enthaltenden Methacrylats verwendet. Process for the production of lubricants by crushing known solid lubricants, in particular with a layered lattice crystal structure, in lubricating oils in the presence of polymeric compounds, characterized in that that a homopolymer of a methacrylate containing tertiary amino groups is used as the polymeric compound. In Betracht gezogene Druckschriften:
Deutsche Patentschrift Nr. 1 025 085.Considered publications:
German patent specification No. 1 025 085.
DEM63062A 1964-11-09 1964-11-09 Process for the preparation of solid lubricant mineral oil dispersions Pending DE1261263B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM63062A DE1261263B (en) 1964-11-09 1964-11-09 Process for the preparation of solid lubricant mineral oil dispersions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEM63062A DE1261263B (en) 1964-11-09 1964-11-09 Process for the preparation of solid lubricant mineral oil dispersions
GB46940/65A GB1147649A (en) 1967-09-01 1967-09-01 Improvements in or relating to the preparation of solid lubricant oil dispersion

Publications (1)

Publication Number Publication Date
DE1261263B true DE1261263B (en) 1968-02-15

Family

ID=25987629

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM63062A Pending DE1261263B (en) 1964-11-09 1964-11-09 Process for the preparation of solid lubricant mineral oil dispersions

Country Status (1)

Country Link
DE (1) DE1261263B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025085B (en) 1954-10-08 1958-02-27 Alpha Molykote Corp Stabilizers for the suspension of molybdenum disulfide and / or tungsten disulfidine lubricating oils

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025085B (en) 1954-10-08 1958-02-27 Alpha Molykote Corp Stabilizers for the suspension of molybdenum disulfide and / or tungsten disulfidine lubricating oils

Similar Documents

Publication Publication Date Title
DE2912069C2 (en)
DE68906514T2 (en) USE OF AQUEOUS LUBRICANT SOLUTIONS BASED ON FATTY ALKYLAMINS.
DE1243811B (en) Lubricant additives
DE921095C (en) Selenium rectifier
DE68905104T2 (en) ADDITIVES FOR IMPROVING LUBRICATION CONTAINING ORGANIC COMPOUNDS OF TITANIUM AND LUBRICANT COMPOSITIONS CONTAINING THESE ADDITIVES.
DE1052742B (en) Liquid hydrocarbon fuel for internal combustion engines
DE2438366C2 (en) Process for the hydrogenation of aromatic hydrocarbons
DE69006163T2 (en) Silicone grease composition.
DE1084910B (en) Process to protect natural or synthetic rubber against the effects of ozone
WO2005090533A1 (en) Stable aqueous particle dispersion the use thereof and method for producing said dispersion
DE1261263B (en) Process for the preparation of solid lubricant mineral oil dispersions
DE1237721B (en) lubricant
DE1796086C3 (en) Solid material for the production of self-lubricating molded parts
DE1233525B (en) Lubricating oil additive
DE2459349C2 (en) Process for agglomerating finely divided coal in sludge or powder form
DE1257332B (en) Grease containing a resin coated colloidal clay
DE3143354C2 (en) Process for improving the thickening, in particular gel-forming, effect of finely divided silicon dioxide
DE951225C (en) Additive to lubricating oils
DE1025085B (en) Stabilizers for the suspension of molybdenum disulfide and / or tungsten disulfidine lubricating oils
DE1519396C (en) Abrasives and polishes for glass
DE1223537B (en) Ozone protection agent for natural or synthetic rubber
DE1038221B (en) Isolating oil based on a refined mineral oil
DE1594389A1 (en) Mineral or synthetic lubricating oil
DE875777C (en) Process for the use of emulsions as punching, pressing and molding oils in the ceramic industry
DE557375C (en) Process for improving road tar using oil bitumen