DE1016876B - High pressure lubricating oils - Google Patents

High pressure lubricating oils

Info

Publication number
DE1016876B
DE1016876B DEB39613A DEB0039613A DE1016876B DE 1016876 B DE1016876 B DE 1016876B DE B39613 A DEB39613 A DE B39613A DE B0039613 A DEB0039613 A DE B0039613A DE 1016876 B DE1016876 B DE 1016876B
Authority
DE
Germany
Prior art keywords
lubricating oils
sulfur
high pressure
pressure lubricating
nitrosamines
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
DEB39613A
Other languages
German (de)
Inventor
Dr Adolf Hrubesch
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB39613A priority Critical patent/DE1016876B/en
Priority to FR1173265D priority patent/FR1173265A/en
Publication of DE1016876B publication Critical patent/DE1016876B/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
    • C10M2201/043—Sulfur; Selenenium; Tellurium
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/044—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms having cycloaliphatic 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/221—Six-membered rings containing nitrogen and carbon only
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/225—Heterocyclic nitrogen compounds the rings containing both nitrogen and oxygen
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/225—Heterocyclic nitrogen compounds the rings containing both nitrogen and oxygen
    • C10M2215/226—Morpholines
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/26—Amines
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/30—Heterocyclic compounds
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
    • C10M2219/066—Thiocarbamic type compounds
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms

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

DEUTSCHESGERMAN

Es ist bekannt, Schmiermittel, wie Mineralschmieröle, synthetische Schmieröle auf Kohlenwasserstoffbasis oder Nichtkohlenwasserstoffbasis durch Zugabe von Nitrosaminen zu verbessern. Der Zusatz von Nitrosamin zu Schmierölen bewirkt, daß bei Anwendung dieser Öle in Verbrennungsmaschinen Ablagerungen im Verbrennungsraum verhindert werden. Dagegen ist die Verbesserung der Hochdruckeigenschaften von Schmierölen durch Zugabe von Nitrosaminen nur gering.It is known to improve lubricants such as mineral lubricating oils, synthetic lubricating oils based on hydrocarbons or non-hydrocarbons by adding nitrosamines. The addition of nitrosamine to lubricating oils has the effect that when these oils are used in combustion engines, deposits in the combustion chamber are prevented. In contrast, the improvement in the high pressure properties of lubricating oils by adding nitrosamines is only slight.

Es wurde nun gefunden, daß man Schmieröle mit sehr guten Hochdruckeigenschaften erhält, wenn man Schmierölen auf Kohlenwasserstoffbasis oder Nichtkohlenwasserstoffbasis Nitrosamine zusammen mit elementarem Schwefel und/oder Schwefelverbindungen, die Schwefel in Thioäther-, Mercaptan-, Thioamid-, Thioimid-, Thioester- oder Thioketonbindung enthalten, zugibt. Es hat sich gezeigt, daß der elementare Schwefel oder die genannten Schwefelverbindungen die Wirkung der Nitrosamine aktivieren.It has now been found that lubricating oils with very good extreme pressure properties are obtained if lubricating oils are used hydrocarbon-based or non-hydrocarbon-based nitrosamines along with elemental Sulfur and / or sulfur compounds that convert sulfur into thioether, mercaptan, thioamide, thioimide, thioester or contain thioketone bond, admits. It has been shown that the elemental sulfur or those mentioned Sulfur compounds activate the action of nitrosamines.

Als Nitrosamine kommen aliphatische, cycloaliphatische oder aromatische Nitrosamine in Betracht.Suitable nitrosamines are aliphatic, cycloaliphatic or aromatic nitrosamines.

Im allgemeinen genügt die Zugabe geringer Mengen Nitrosamin, z. B. von 0,1 bis 10 Gewichtsprozent, bezogen auf das Schmieröl. Die Menge der anzuwendenden Aktivatoren ist ebenfalls sehr gering. Oft reichen bereits 2 Gewichtsprozent, bezogen auf das zugesetzte Nitrosamin, aus, aber auch wenn man größere Mengen an Aktivatoren anwendet, braucht die Menge des Aktivators die des Nitrosamins im allgemeinen nicht zu überschreiten.In general, it is sufficient to add small amounts of nitrosamine, e.g. B. from 0.1 to 10 percent by weight, based on the lubricating oil. The amount of activators to be used is also very small. Often enough 2 percent by weight, based on the added nitrosamine, but also if you have larger amounts of If activators are used, the amount of activator generally does not need to exceed that of nitrosamine.

Als Ausgangsöle für die Herstellung von Schmierölen mit guten Hochdruckeigenschaften können natürliche oder synthetische Schmieröle auf Kohlenwasserstoffbasis, Ho chdrucks chmier öleThe starting oils for the production of lubricating oils with good extreme pressure properties can be natural or synthetic lubricating oils based on hydrocarbons, high pressure lubricating oils

Anmelder:Applicant:

Badische Anilin- & Soda-Fabrik
Aktiengesellschaft, Ludwigshafen/RheinAniline & Soda Factory in Baden
Aktiengesellschaft, Ludwigshafen / Rhein

Dr. Adolf Hrubesch, Ludwigshafen/Rhein,
ist als Erfinder genannt wordenDr. Adolf Hrubesch, Ludwigshafen / Rhine,
has been named as the inventor

aber auch sogenannte polare Schmieröle, wie Esteröle, Polyglykol u. dgl., angewandt werden.but so-called polar lubricating oils, such as ester oils, polyglycol and the like, can also be used.

Die Wirkung der beanspruchten Zusätze geht aus folgender Tabelle hervor, in der die auf der Almen-Wieland-Maschine (AWM) und im Vierkugelapparat (VKA) gemessenen Freßbelastungen — verglichen mit einem mineralischen Grundöl vom Typ SAE 20 sowie mit einem Polyglykol — angegeben sind.The effect of the claimed additives can be seen from the following table, in which the on the Almen-Wieland machine (AWM) and in the four-ball apparatus (VKA) measured seizure loads - compared with a mineral base oil of type SAE 20 and a polyglycol - are specified.

Die Mengen sind jeweils Gewichtsprozente.The amounts are in each case percentages by weight.

AktivatorActivator Mineralölmineral oil AWMAWM PolyglykolPolyglycol Mineralölmineral oil VKAVKA PolyglykolPolyglycol NitrosaminNitrosamine kgkg kgkg kgkg kgkg 180180 800800 160160 150150 Styrolsulfid 1 %Styrene sulfide 1% 16001600 12501250 500500 900900 Nitrosodibutylamin 4 %Nitrosodibutylamine 4% + Schwefel 0,5 %+ Sulfur 0.5% Tetra-n-butyldithiuramTetra-n-butyldithiuram 15001500 —- 450450 —- Diisoctylnitrosamin 4 °/0 Diisoctylnitrosamin 4 ° / 0 1,5 «/01.5 «/ 0 Schwefel 0,75%Sulfur 0.75% 15501550 12501250 550550 500500 Diisoctylnitrosamin 4 %Diisoctylnitrosamine 4% Schwefel 0,75%Sulfur 0.75% 16001600 —- 700700 —- N-Nitroso- (p-toluyl)N-nitroso- (p-toluyl) Methylsulfamid 4 %Methyl sulfamide 4% Styrolsulfid 2%Styrene sulfide 2% 15501550 12501250 500500 450450 Nitrosopiperidin 4 %Nitrosopiperidine 4% + Schwefel 0,75%+ Sulfur 0.75% Schwefel 1 %Sulfur 1% 18501850 12501250 450450 450450 Nitrosodiphenylamin 4 %Nitrosodiphenylamine 4%

Vergleichsversuche haben ergeben, daß bei jeweils getrennter Zugabe eines Nitrosamins sowie einer Schwefelverbindung zwar eine Verbesserung der AWM-Werte und der VKA-Werte eintritt, daß j edoch durch die gemeinsameComparative tests have shown that each time a nitrosamine and a sulfur compound are added separately Although there is an improvement in the AWM values and the VKA values, the joint

709 69*357709 69 * 357

Zugabe dieser Verbindungen eine weit höhere Verbesserung erzielt wird. Die Versuchsergebnisse sind in der nachstehenden Tabelle zusammengestellt:Adding these compounds results in a far greater improvement is achieved. The test results are compiled in the table below:

ZugesetztesAdded AWM-AWM- VKA-VKA VerbesserungsmittelEnhancement agent Wertevalues Wertevalues GrundölBase oil Nerag SAE 20Nerag SAE 20 —- 160160 160160 desgl.the same 4% Nitroso-4% nitroso 700700 280280 dibutylamindibutylamine desgl.the same 2°/0Styrolsulfid2 ° / 0 styrene sulfide 650650 180180 desgl.the same 4%Nitroso-4% nitroso 14501450 500500 dibutylamindibutylamine + 2°/0Styrolsulfid+ 2 ° / 0 styrene sulfide

Claims (1)

Patentanspruch:Claim: Hochdruckschmieröle auf Schmierölbasis aus Kohlenwasserstoffen oder Nichtkohlenwasserstoffen, gekennzeichnet durch einen Gehalt an Nitrosaminen in Verbindung mit Schwefel und/oder Schwefelverbindungen, die Schwefel in Thioäther-, Mercaptan-, Thioamid-, Thioimid-, Thioester- oder Thioketonbindung enthalten.High-pressure lubricating oils based on lubricating oils made from hydrocarbons or non-hydrocarbons, marked due to a content of nitrosamines in connection with sulfur and / or sulfur compounds, the sulfur in thioether, mercaptan, Contain thioamide, thioimide, thioester or thioketone bond. In Betracht gezogene Druckschriften:
Deutsche Patentschriften Nr. 925 192,926 680,926 681, 384, 927 819, 927 820, 933 048;
britische Patentschriften Nr. 528 096, 435 548, 431 126.Considered publications:
German Patent Nos. 925 192,926 680,926 681, 384, 927 819, 927 820, 933 048;
British Patent Nos. 528 096, 435 548, 431 126. ©70969W3&7 9.57© 70969W3 & 7 9.57
DEB39613A 1956-03-22 1956-03-22 High pressure lubricating oils Pending DE1016876B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEB39613A DE1016876B (en) 1956-03-22 1956-03-22 High pressure lubricating oils
FR1173265D FR1173265A (en) 1956-03-22 1957-03-21 High pressure lubricants containing nitrosamines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB39613A DE1016876B (en) 1956-03-22 1956-03-22 High pressure lubricating oils

Publications (1)

Publication Number Publication Date
DE1016876B true DE1016876B (en) 1957-10-03

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ID=6965853

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB39613A Pending DE1016876B (en) 1956-03-22 1956-03-22 High pressure lubricating oils

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DE (1) DE1016876B (en)
FR (1) FR1173265A (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB431126A (en) * 1933-09-25 1935-07-01 Du Pont Improvements in or relating to the manufacture of insecticidal, fungicidal and like materials
GB435548A (en) * 1934-03-17 1935-09-17 Ig Farbenindustrie Ag Improvements in the manufacture and production of lubricant compositions
GB528096A (en) * 1939-04-27 1940-10-22 Armour & Co Improvements in or relating to extreme pressure lubricants and process of preparing the same
DE925192C (en) * 1952-08-25 1955-03-14 Huels Chemische Werke Ag Additives for lubricants
DE926681C (en) * 1952-08-25 1955-04-21 Huels Chemische Werke Ag Additives for lubricants
DE926680C (en) * 1952-08-25 1955-04-21 Huels Chemische Werke Ag Additives for lubricants
DE927819C (en) * 1952-08-25 1955-05-16 Huels Chemische Werke Ag Additives for lubricants
DE927820C (en) * 1952-08-25 1955-05-16 Huels Chemische Werke Ag Additives for lubricants
DE929384C (en) * 1952-08-25 1955-06-27 Huels Chemische Werke Ag Additives for lubricants
DE933048C (en) * 1953-08-15 1955-09-15 Huels Chemische Werke Ag Additives for lubricants

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB431126A (en) * 1933-09-25 1935-07-01 Du Pont Improvements in or relating to the manufacture of insecticidal, fungicidal and like materials
GB435548A (en) * 1934-03-17 1935-09-17 Ig Farbenindustrie Ag Improvements in the manufacture and production of lubricant compositions
GB528096A (en) * 1939-04-27 1940-10-22 Armour & Co Improvements in or relating to extreme pressure lubricants and process of preparing the same
DE925192C (en) * 1952-08-25 1955-03-14 Huels Chemische Werke Ag Additives for lubricants
DE926681C (en) * 1952-08-25 1955-04-21 Huels Chemische Werke Ag Additives for lubricants
DE926680C (en) * 1952-08-25 1955-04-21 Huels Chemische Werke Ag Additives for lubricants
DE927819C (en) * 1952-08-25 1955-05-16 Huels Chemische Werke Ag Additives for lubricants
DE927820C (en) * 1952-08-25 1955-05-16 Huels Chemische Werke Ag Additives for lubricants
DE929384C (en) * 1952-08-25 1955-06-27 Huels Chemische Werke Ag Additives for lubricants
DE933048C (en) * 1953-08-15 1955-09-15 Huels Chemische Werke Ag Additives for lubricants

Also Published As

Publication number Publication date
FR1173265A (en) 1959-02-23

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