DE925192C - Zusaetze fuer Schmiermittel - Google Patents
Zusaetze fuer SchmiermittelInfo
- Publication number
- DE925192C DE925192C DEC6322A DEC0006322A DE925192C DE 925192 C DE925192 C DE 925192C DE C6322 A DEC6322 A DE C6322A DE C0006322 A DEC0006322 A DE C0006322A DE 925192 C DE925192 C DE 925192C
- Authority
- DE
- Germany
- Prior art keywords
- oil
- additives
- lubricants
- xanthates
- percent
- 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.)
- Expired
Links
- 239000000314 lubricant Substances 0.000 title claims description 9
- 239000000654 additive Substances 0.000 title claims description 7
- 239000002480 mineral oil Substances 0.000 claims description 12
- 229920001021 polysulfide Polymers 0.000 claims description 10
- 150000002828 nitro derivatives Chemical class 0.000 claims description 9
- 239000012991 xanthate Substances 0.000 claims description 9
- 239000005077 polysulfide Substances 0.000 claims description 8
- 150000008117 polysulfides Polymers 0.000 claims description 8
- 235000010446 mineral oil Nutrition 0.000 claims description 7
- 150000002019 disulfides Chemical class 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 9
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- 239000010688 mineral lubricating oil Substances 0.000 description 3
- 235000019198 oils Nutrition 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- -1 aromatic nitro compounds Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QWENMOXLTHDKDL-UHFFFAOYSA-N pentoxymethanedithioic acid Chemical compound CCCCCOC(S)=S QWENMOXLTHDKDL-UHFFFAOYSA-N 0.000 description 2
- WDCYWAQPCXBPJA-UHFFFAOYSA-N 1,3-dinitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC([N+]([O-])=O)=C1 WDCYWAQPCXBPJA-UHFFFAOYSA-N 0.000 description 1
- GAYUSSOCODCSNF-UHFFFAOYSA-N 1-(dodecyldisulfanyl)dodecane Chemical compound CCCCCCCCCCCCSSCCCCCCCCCCCC GAYUSSOCODCSNF-UHFFFAOYSA-N 0.000 description 1
- OLDMYNWXIGPOCI-UHFFFAOYSA-N 1-bromo-3,5-dinitrobenzene Chemical compound [O-][N+](=O)C1=CC(Br)=CC([N+]([O-])=O)=C1 OLDMYNWXIGPOCI-UHFFFAOYSA-N 0.000 description 1
- BFCFYVKQTRLZHA-UHFFFAOYSA-N 1-chloro-2-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1Cl BFCFYVKQTRLZHA-UHFFFAOYSA-N 0.000 description 1
- RJKGJBPXVHTNJL-UHFFFAOYSA-N 1-nitronaphthalene Chemical class C1=CC=C2C([N+](=O)[O-])=CC=CC2=C1 RJKGJBPXVHTNJL-UHFFFAOYSA-N 0.000 description 1
- UFBJCMHMOXMLKC-UHFFFAOYSA-N 2,4-dinitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O UFBJCMHMOXMLKC-UHFFFAOYSA-N 0.000 description 1
- MUCCHGOWMZTLHK-UHFFFAOYSA-N 2-nitronaphthalen-1-ol Chemical class C1=CC=C2C(O)=C([N+]([O-])=O)C=CC2=C1 MUCCHGOWMZTLHK-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- HIZCIEIDIFGZSS-UHFFFAOYSA-N carbonotrithioic acid Chemical compound SC(S)=S HIZCIEIDIFGZSS-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- NGDNCZPCIZNCQS-UHFFFAOYSA-N ctk3j8699 Chemical compound Cl=S NGDNCZPCIZNCQS-UHFFFAOYSA-N 0.000 description 1
- 239000010730 cutting oil Substances 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical class Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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
- 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
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
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- 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
- C10M2215/20—Containing nitrogen-to-oxygen bonds
- C10M2215/202—Containing nitrogen-to-oxygen bonds containing nitro groups
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- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
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- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
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- C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
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- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
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- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
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- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/083—Dibenzyl sulfide
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- 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
- C10M2219/084—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof
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- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/085—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing carboxyl groups; Derivatives thereof
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- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
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- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
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- C10M2219/088—Neutral salts
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- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
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- C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
- C10M2219/089—Overbased salts
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
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- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
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- C10M2221/00—Organic macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2221/04—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2221/043—Polyoxyalkylene ethers with a thioether group
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- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Form in which the lubricant is applied to the material being lubricated semi-solid; greasy
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Description
Bekanntlich kann im allgemeinen bei Mineralschmierölen verschiedenen Ursprungs keine oder
nur eine geringe Verbesserung der Hochdruckschmierfähigkeit durch Zusatz von aliphatischen
5 oder aromatischen Nitroverbindungen bzw. HaIogennitroverbindungen
erzielt werden.
Indessen kann man die Hochdruckschmierfähigkeit von Mineralschmierölen durch Zusatz von
elementarem Schwefel erhöhen. Eine größere
ίο Widerstandsfähigkeit gegen Belastung mit hohen
Drucken kann bei Getriebe- und Schneidölen dadurch erreicht werden, daß man Schwefel mit
Mineralölen umsetzt. Auch die durch Umsetzen, von Fetten, tierischen oder pflanzlichen ölen mit
Schwefel erhältlichen schwefelhaltigen Stoffe sind schon als Zusatz zu Mineralschmierölen vorgeschlagen
worden. Man hat auch schon Umsetzungsprodukte von Amylxanthogenat - und Schwefel-
chlorür, die als Polysulfide des Amylxanthogenats anzusprechen sind, zur Verbesserung der Schmierfähigkeit
von Mineralölen angewendet. Derartige schwefelhaltige Mineralöle wirken durch den Gehalt
an elementarem Schwefel häufig korrodierend, ihre Hochdruckschmierfähigkeit zeigt jedoch gegenüber
einem reinen Mineralöl eine gewisse Verbesserung, entspricht jedoch nicht den heute gestellten
erhöhten Anforderungen.
Es wurde gefunden, daß Schmiermittel auf Mineralölbasis, die organische Nitroverbindungen und
öllösliche Di- bzw. Polysulfide von Xanthogenaten enthalten, eine ganz wesentliche Verbesserung ihrer
Hochdruckschmierfähigkeit aufweisen.
Unter Schmiermittel auf Mineralölbasis werden im vorliegenden Falle nicht nur die eigentlichen
Mineralöle, sondern auch die entsprechenden Schmierfette verstanden.
Geeignete organische Nitroverbindungen sind beispielsweise m-Dinitrobenzol, Bromdinitrobenzol,
Chlornitrobenzol, /J-Dinitrophenol, deren C-Alkylderivate
oder Gemische, Nitroparaffine sowie andere, vornehmlich aromatische Nitroverbindungen
(Nitronaphthaline, Nitronaphthole), wobei die Aufzählung keinen Anspruch auf Vollständigkeit erhebt.
Die in Frage kommenden öllöslichen Di- bzw. ίο Polysulfide von Xanthogenaten sind nach den
Formeln
R—X—CS- S- S— CS- X—R
bzw.
R-X-CS-(S)n-CS-X-R
R-X-CS-(S)n-CS-X-R
aufgebaut, in denen R einen Alkyl-, Cycloalkyl-, Aralkyl-, Aryl- und/oder heterocyclischen Rest bedeutet,
der geradkettig, verzweigt, gesättigt oder ungesättigt sein kann, sowie noch Metalle, beispielsweise
Zinn oder Zink, enthalten kann. X bedeutet Sauerstoff oder Schwefel, η ist eine Zahl von 3 bis 5
und höher.
Disulfide von Xanthogenaten erhält man bekanntlich aus Xanthogenaten durch Behandeln dieser in
wäßriger Lösung mit Oxydationsmitteln, wie Wasserstoffperoxyd, Alkalipersulfaten oder -hypochloriten,
während zur Darstellung der Polysulfide ζ. Β. die Alkalisalze der Di- und Trithiokohlensäure
nach bekannten Verfahren mit Chlorschwefel umgesetzt werden.
Die im einzelnen anzuwendenden Mengen an Nitroverbindungen und Disulfiden bzw. PoIysulfiden
von Xanthogenaten und die j eweils zu verwendenden Verbindungen richten sich nach dem
Verwendungszweck. Im allgemeinen beträgt der Anteil der Nitroverbindung nur einen Bruchteil
des verwendeten Disulfide bzw. Polysulfide (bis zu 10 Gewichtsprozent desselben), von dem, je nach
der geforderten Hochdruckschmier fähigkeit, im allgemeinen Mengen zwischen etwa 0,5 und 10 Gewichtsprozent,
bezogen auf das reine Schmiermittel, in Betracht kommen.
Die neuen, Nitroverbindungen und Di-bzw. Polysulfide
von Xanthogenaten enthaltenden Schmiermittel zeigen gegenüber Metallen, wie Messing,
Bronze, Kupfer, bei normalen Temperaturen keine, bei erhöhten Temperaturen und längeren Einwirkungszeiten
nur geringfügige, praktisch nicht ins Gewicht fallende Korrosionserscheinungen. Den
durch die erwähnten Zusätze verbesserten Schmiermitteln können noch andere Mittel zur Verbesserung
der Hochdruckschmierfähigkeit sowie Viskositätsverbesserer, Stockpunktserniedriger,
Schaumverhinderer und gegebenenfalls Antioxydationsmittel zugesetzt werden.
Überprüft man die Hochdruckschmierfähigkeit auf dem allgemein gebräuchlichen Vierkugelapparat
(VKA) nach der in »Öl und Kohle« I944> S. 19 bis 23, beschriebenen Methode, so sind bei
Zusatz von beispielsweise 0,1 bis 0,25 Gewichtsprozent organischer Nitroverbindungen zusammen
mit ι bis 2,5 Gewichtsprozent an Di- bzw. PoIysulfiden
von Xanthogenaten Belastungen von 400 bis über 1000 kg möglich, bevor ein Verschweißen
der Kugeln eintritt.
Man hat bereits Schwefel enthaltende Verbindungen zusammen mit Nitroverbindungen als Zusätze
für Schmiermittel auf Mineralölbasis vorgeschlagen. Die mit den bekannten Zusätzen, wie
z. B. ι Teil Dilauryldisulfid im Gemisch mit 2/s Teilen a-Nitronaphthalin, hergestellten Schmiermittel
ergeben bei der Prüfung auf dem Vierkugelapparat jedoch höchstens VKA-Zahlen von 200 bis
250. Demgegenüber war nicht vorauszusehen, daß Zusätze, die als Schwefelverbindungen die bislang
noch nicht für diesen Zweck verwendeten Di- bzw. Polysulfide von Xanthogenaten enthalten, derartig
überlegene VKA-Zahlen ergeben.
Beispiel ι
Ein Spindelöl mit der VKA-Zahl unter 150 (D'/
= 0,9024, Viskosität bei 200 = 8,40° E, bei 500 = 2,47° E, Viskositätsindex = 115, Stockpunkt
= — 170 C) wird durch Zugabe von 0,25 Gewichtsprozent
Dinitrophenol bezüglich seiner Hochdruck- 8g schmierfähigkeit nicht verbessert. Werden dem
reinen Spindelöl 2,5 Gewichtsprozent Dibutylxanthogensäuredisulfid zugesetzt, so steigt die
VKA-Zahl auf 340; setzt man jedoch noch 0,25 Gewichtsprozent /J-Dinitrophenol zu, so steigt die
VKA-Zahl auf 440.
Setzt man einem mittelviskosen Mineralöl mit der VKA-Zahl unter 150 (D1/ = 0,78, Viskosität bei
20° C = 47,2° E, bei 500 C = 8,49'°' E, Viskositätsindex = 104, Stockpunkt = —120 C) 2,5 Gewichtsprozent
Dibutylxanthogensäuredisulfid zu, so steigt die VKA-Zahl auf 480. Durch Zusatz von
0,25 Gewichtsprozent ^-Dinitrophenol steigt die VKA-Zahl auf 950, während durch Zusatz von
0,25 Gewichtsprozent /?-Dinitrophenol allein zu dem reinen Mineralöl eine Verbesserung der Hochdruckschmierfähigkeit
nicht erzielt wird.
Claims (1)
- Patentanspruch:Verwendung öllöslicher Di- bzw. Polysulfide von Xanthogenaten neben organischen Nitroverbindungen als Zusätze für Schmiermittel auf no Mineralölbasis.Angezogene Druckschriften: Zerbe: »Mineralöle und verwandte Produkte« (1952), S. 737; »öl und Kohle«, 40 (1944), S. 102 bis 104; »Journ. of the Inst, of Petroleum« (1948), S. 799; britische Patentschrift Nr. 455 305.© 9602 3.55
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC6322A DE925192C (de) | 1952-08-25 | 1952-08-26 | Zusaetze fuer Schmiermittel |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE745409X | 1952-08-25 | ||
| DEC6322A DE925192C (de) | 1952-08-25 | 1952-08-26 | Zusaetze fuer Schmiermittel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE925192C true DE925192C (de) | 1955-03-14 |
Family
ID=25947458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEC6322A Expired DE925192C (de) | 1952-08-25 | 1952-08-26 | Zusaetze fuer Schmiermittel |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE925192C (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1016876B (de) * | 1956-03-22 | 1957-10-03 | Basf Ag | Hochdruckschmieroele |
| DE1026025B (de) * | 1956-09-04 | 1958-03-13 | Basf Ag | Hochbelastbare Schmieroele |
| DE1064666B (de) * | 1956-06-15 | 1959-09-03 | Exxon Research Engineering Co | Schmieroel |
| DE1125577B (de) * | 1958-07-07 | 1962-03-15 | Exxon Standard Sa | Schmieroel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455305A (en) * | 1934-04-24 | 1936-10-19 | Du Pont | Improvements in or relating to lubricants |
-
1952
- 1952-08-26 DE DEC6322A patent/DE925192C/de not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455305A (en) * | 1934-04-24 | 1936-10-19 | Du Pont | Improvements in or relating to lubricants |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1016876B (de) * | 1956-03-22 | 1957-10-03 | Basf Ag | Hochdruckschmieroele |
| DE1064666B (de) * | 1956-06-15 | 1959-09-03 | Exxon Research Engineering Co | Schmieroel |
| DE1026025B (de) * | 1956-09-04 | 1958-03-13 | Basf Ag | Hochbelastbare Schmieroele |
| DE1125577B (de) * | 1958-07-07 | 1962-03-15 | Exxon Standard Sa | Schmieroel |
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