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DE1274775C2 - Feuerfestes schmieroel - Google Patents

Feuerfestes schmieroel

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Publication number
DE1274775C2
DE1274775C2 DE1965L0051528 DEL0051528A DE1274775C2 DE 1274775 C2 DE1274775 C2 DE 1274775C2 DE 1965L0051528 DE1965L0051528 DE 1965L0051528 DE L0051528 A DEL0051528 A DE L0051528A DE 1274775 C2 DE1274775 C2 DE 1274775C2
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Germany
Prior art keywords
phosphate
mud
lubricating oil
diphenyl
corrosion
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
Application number
DE1965L0051528
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English (en)
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DE1274775B (de
Inventor
Georges Gaston Etterbeck Brüssel Groslambert (Belgien)
Original Assignee
Societe Anonyme Labofina, Brüssel
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Publication date
Priority to BE668430D priority Critical patent/BE668430A/xx
Priority to US466192A priority patent/US3352780A/en
Priority to GB36998/65A priority patent/GB1133602A/en
Application filed by Societe Anonyme Labofina, Brüssel filed Critical Societe Anonyme Labofina, Brüssel
Priority to DE1965L0051528 priority patent/DE1274775C2/de
Priority to NL6511657A priority patent/NL6511657A/xx
Application granted granted Critical
Publication of DE1274775C2 publication Critical patent/DE1274775C2/de
Publication of DE1274775B publication Critical patent/DE1274775B/de
Expired legal-status Critical Current

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Description

Schmierölgemische, die polychlorierte Diphenyle und Triarylpkosphate in Mengen von 20:80 bis 80:20 aufweisen, sind bekannt Sie werden wegen ihrer Feuerfestigkeit als Turbinenöle verwendet. Sie haben aber den Nachteil, daß sie korrodieren und Schlamm bilden, wenn man sie dem ASTM-D-943-Turbinenöl-Oxydationsstabilitätstest unterwirft. Diese Nachteile hat das erfindungsgemäße Mittel nicht.
Es wurde nämlich gefunden, daß die Verringerung des Phosphorsäureestergehaltes auf 3 % des Gemisches mit dem polychlorierten Diphenyl gegebenenfalls in Gegenwart der üblichen Oxydations- bzw. Rostinhibitoren ein Schmiermittel ergibt, das den vorstehend angegebenen ölgemischen hinsichtlich der Korrosionsfestigkeit und Schlammbildung wesentlich überlegen ist, und ohne weiteres den Mindestanforderungen für Turbinenöle des ASTM-D-943-Testes genügt.
Überraschenderweise weist das Schmiermittel, welches 3% Arylphosphorsäureester enthält, hinsichtlich Druckbeständigkeit, wesentlich bessere Eigenschaften auf (vgl. die Kurven der Zeichnung, Höchstwert bei etwa 3% Phosphorsäureestergehalt). Hier liegt offensichtlich ein synergistisches Zusammenwirken zwischen dem Phosphorsäureester und dem polychlorierten Diphenyl in der angegebenen Menge vor. Eine verbesserte Säurefestigkeit und verbesserte Eigenschaften hinsichtlich der Schlammbildung werden mit 3 % Triarylphosphat erzielt.
Das polychlorierte Diphenyl kann trichloriertes Diphenyl, tetrachloriertes Diphenyl oder pentachloriertes Diphenyl oder Mischungen dieser Diphenyle sein.
Der Phosphorsäureester kann irgendein flüssiges
Tabelle I
Gemische (Gewicht, °/„)
Triarylphosphat der ortho-Phosphorsäure der Fonnel (RO)3 = P = O sein, in der R ein monocyclischer Arylrest, wie Phenyl, Tolyl, Xylenyl, Cumenyl, Äthylphenyl ist; die drei R-Reste können gleich oder verschieden sein. Bevorzugt werden die Phosphorsäureester des monocyclischen Aryls und Aryle, mit niederen Alkylsubstituenten, bei welchen das Alkyl Methyl oder Äthyl ist Beispiele für bevorzugte Phosphorsäureester sind Triphenylphosphat, Tricresylphosphat Trixyle-
o nylphosphat, Phenyldicresylphosphat, Diphenylcresylphosphat, Cyclohexyldicresylphosphat und n-Hexenyldicresylphosphat.
Den beanspruchten ölen können auch andere übliche Zusatzstoffe beigemischt werden, z. B. Schaum- und P-ostinhibitoren, Antioxidantien und Mittel zum Verbessern des Viskositätsindex, jeweils in Mengen von 0,1 bis 3 Gewichtsprozent oder bei Mitteln zur Verbesserung des Viskositätsindex in Mengen von 2 bis 10%.
Um die synergistische Wirkung hinsichtlich der Beständigkeit der beanspruchten Mischung zu veranschaulichen, wurden mehrere Versuche in einer Timken-Maschine durchgeführt und die Belastbarkeit einer Reihe von vorstehend beschriebenen Schmiennittelmischungen gemessen. Diese Gemische wiesen alle Triarylphosphatester in Mischung mit Tetrachlordiphenyl in dem kritischen Mengenbereich von 1 bis 5 Gewichtsprozent auf; die Belastbarkeit wurde in ein Koordinatensystem eingetragen und eine Reihe von Kurven erhalten, die in der Zeichnung dargestellt sind. Folgende Phosphatester wurden geprüft: 1. Tricresylphosphat, 2. Diphenylcresylphosphat, 3. Triphenylphosphat und 4. Trixylenylphosphat. Die Prüfungen wurden nach der »Fed. Method
Std. 791a, Nr. 6505« durchgeführt. Wie sich aus den Kurven ergibt, war das Tricresylphosphat am besten, dann folgte das Diphenylcresyl.
Weitere 18 Beispiele sind in Tabellenform zusammengefaßt, um die Wirkung einer niedrigen Konzentration von 3 % des Phosphatesters bezüglich der Korrosionsfestigkeit und Schlammbildung zu zeigen, die in einem gewissen Gegensatz zu der höheren Konzentration in dem polychlorierten Diphenyl steht, wenn das Schmiermittel dem Standard-ASTM-D-943-Turbinenöl-Oxydationsstabilitätstest unterworfen wird.
Gemisch 1 2 3
10 11
12 13 14 15 16 17 18
10
Trichi^riertes Diphenyl
Tetrachloriertes Diphenyl
Pentachloriertes Diphenyl
Tricresylphosphat
Trixylenylphosphat
Diphenylcresylphosphat
Tributylphosphat
Octyldiphenylphosphat
l-mono-Chlornaphthalin
di-tert.-Butyl-para-kresol
Calciumpetroleumsulf onat *)
Octa-decenyl-bernsteinsäure
Butylpolyacrylat(M.G. 10000) 5,0 5,0 5,0 5,0
74,4 84,4 89,4 91,4 95 91,4 91,4 90,4 90,4 91,4 91,4
3 5
0,5 0,5 0,5 0,5
0,1 0,1 0,1 0,1
41,4
3
91,4 40,439,4 38,4 39,4 90,9 50,050,0 50,0 50,0
0,5 0,5 0,5 0,5 0,5 0,5
0,1 0,1 0,1 0,1 0,1
0,05
5,0 5,0 5,0 5,0 5,0 5,0
0,5 1,0 2,0 3,0 2,0
0,5 0,5 0,5 0,5 0,5 0,5 0,5
0,1 0,1 0,1 0,1 0,1 0,1 0,1
5,0 5,0 5,0 5,0 5,0 5,0 5,0
♦) Ein Calciumsulfonat, das bei der Raffination von Mineralölen mittels Schwefelsäure odei z. B. als sulfoniertes Alkylbenzol erhalten wird.
Der Oxydationsstabilitätstest besteht darin, daß man Sauerstoff durch eine bestimmte Menge polierte korrodierbare Metalle enthaltendes öl perlen läßt — bei den Versuchen war es eine Spule aus poliertem Kupfer und Stahl — und die in dem Öl entwickelte
Acidität, die Korrosion des Metalls und die Menge gebildeten Schlammes mißt In der Tabelle I sind die Zusammensetzungen der geprüften Schmiermittel und in Tabelle II die erhaltenen Versuchsergebnisse zusammengefaßt.
Tabelle Π Neutralisati Neutralisati Neutralisati Hierzu Neutralisati Eisen- und Kupferspulen Schlamm oder
ASTM-TfSt D-943/54 onszahl onszahl nach onszahl nach onszahl nach Abscheidungen
Gemisch vor dem Test SOO Stunden 1000 Stunden 2000 Stunden
0,05 0,39 0,70 Korrosion Schlamm
0,10 0,50 0,82 1,05 Korrosion Schlamm
1 0,05 — 0,17 0,39 keine Korrosion sehr wenig Schlamm
2 0,04 — 0,14 0,29 keine Korrosion kein Schlamm
3 0,05 — 0,20 0,52 gerostetes Eisen kein Schlamm
4 0,06 0,87 1,02 1,77 gerostetes Eisen Schlamm
5 0,08 0,74 0,95 1,21 gerostetes Eisen Schlamm
6 0,07 0,92 1.11 1,92 gerostetes Eisen Schlamm
7 0,08 0,82 0,99 1,42 gerostetes Eisen Schlamm
8 0,09 — 0,25 0,51 keine Korrosion wenig Schlamm
9 0,12 — 0,27 0,43 keine Korrosion kein Schlamm
10 0,05 — 0,16 0,32 keine Korrosion kein Schlamm
11 0,05 — 0,14 0,32 keine Korrosion kein Schlamm
12 0,06 — 0,16 0,35 keine Korrosion kein Schlamm
13 0,06 — 0,20 0,41 keine Korrosion sehr wenig Schlamm
16 0,12 — 0,24 0,60 keine Korrosion kein Schlamm
17 1 Blatt Zeichnungen
18

Claims (1)

  1. Patentanspruch:
    Feuerfestes Schmieröl, hydraulische Flüssigkeit und "Wärmeübertragungsmittel, bestehend aus polychloriertem Diphenyl, einem bekannten Triarylphosphat und üblichen Schmierölzusätzen, dadurch gekennzeichnet, daß die Mischung 3 Gewichtsprozent Triarylphosphat enthält.
DE1965L0051528 1965-06-23 1965-09-01 Feuerfestes schmieroel Expired DE1274775C2 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE668430D BE668430A (de) 1965-09-01
US466192A US3352780A (en) 1965-06-23 1965-06-23 Fire resistant-extreme pressure and hydrolysis resistant lubricant comprising polychlorinated diphenyl and triaryl phosphates
GB36998/65A GB1133602A (en) 1965-09-01 1965-08-27 Improvements in or relating to fire-resistant liquids
DE1965L0051528 DE1274775C2 (de) 1965-09-01 1965-09-01 Feuerfestes schmieroel
NL6511657A NL6511657A (de) 1965-09-01 1965-09-07

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1965L0051528 DE1274775C2 (de) 1965-09-01 1965-09-01 Feuerfestes schmieroel
NL6511657A NL6511657A (de) 1965-09-01 1965-09-07

Publications (2)

Publication Number Publication Date
DE1274775C2 true DE1274775C2 (de) 1975-09-25
DE1274775B DE1274775B (de) 1975-09-25

Family

ID=25986005

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1965L0051528 Expired DE1274775C2 (de) 1965-06-23 1965-09-01 Feuerfestes schmieroel

Country Status (4)

Country Link
BE (1) BE668430A (de)
DE (1) DE1274775C2 (de)
GB (1) GB1133602A (de)
NL (1) NL6511657A (de)

Also Published As

Publication number Publication date
BE668430A (de)
NL6511657A (de) 1967-03-08
GB1133602A (en) 1968-11-13
DE1274775B (de) 1975-09-25

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