DE1151085B - Schmiermittelgemisch - Google Patents

Schmiermittelgemisch

Info

Publication number
DE1151085B
DE1151085B DES68011A DES0068011A DE1151085B DE 1151085 B DE1151085 B DE 1151085B DE S68011 A DES68011 A DE S68011A DE S0068011 A DES0068011 A DE S0068011A DE 1151085 B DE1151085 B DE 1151085B
Authority
DE
Germany
Prior art keywords
lubricant mixture
mixture according
acid
carbon atoms
lubricant
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
DES68011A
Other languages
English (en)
Inventor
George Milton Calhoun
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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
Priority claimed from US805686A external-priority patent/US3112271A/en
Application filed by Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority claimed from US77817A external-priority patent/US3238131A/en
Priority claimed from US77830A external-priority patent/US3112269A/en
Priority claimed from US162924A external-priority patent/US3226322A/en
Priority claimed from US183036A external-priority patent/US3232882A/en
Publication of DE1151085B publication Critical patent/DE1151085B/de
Pending legal-status Critical Current

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    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M141/00Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/10Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N57/00Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/18Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
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    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C391/00Compounds containing selenium
    • C07C391/02Compounds containing selenium having selenium atoms bound to carbon atoms of six-membered aromatic rings
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    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00Ethers; Compounds having groups, groups or groups
    • C07C43/02Ethers
    • C07C43/257Ethers having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings
    • C07C43/295Ethers having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings containing hydroxy or O-metal groups
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    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/28Phosphorus compounds with one or more P—C bonds
    • C07F9/38Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/3804Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)] not used, see subgroups
    • C07F9/3808Acyclic saturated acids which can have further substituents on alkyl
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    • C07F9/02Phosphorus compounds
    • C07F9/28Phosphorus compounds with one or more P—C bonds
    • C07F9/38Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/40Esters thereof
    • C07F9/4003Esters thereof the acid moiety containing a substituent or a structure which is considered as characteristic
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Description

Im allgemeinen werden Schmiermittel mit verschiedenen öllöslichen Verbindungen vermischt, nämlich mit Stabilisatoren und Antioxydationsmitteln, wie phenolische Verbindungen, z. B. Alkylphenole und Bisphenole, mit Reinigungsmitteln und Korrosions-Verhinderern, wie organische Salze, z. B. Carbonsäuresalze, Phenolate, Phosphate, Sulfonate und Thiocarbamate; mit verschleißhindernden Mittel- und Hochdruckzusätzen, wie Ester von Carbonsäuren oder Phosphorsäuren, z. B. Teilester von Fettsäuren und mehrwertigen Alkoholen oder Alkyl- oder Arylphosphite oder -phosphate oder freie .Fettsäuren sowie Schwefelderivate derselben, wie C10.18-Fettsäuren und sulfurierte ungesättigte Fettsäuren, z.B. sulfurierte ölsäure. Wenn -jedoch derartige Verbindüngen in Mischungen mit solchen Schmierölen benutzt werden, welche hohen Temperaturen und Drücken ausgesetzt sind, zersetzen sie sich und sind nicht mehr in der Lage, unter solchen extremen Bedingungen die erwarteten Wirkungen zu erfüllen.
Es ist nun gefunden worden, daß solche Schmiermittel hinsichtlich ihrer Stabilität, der Verhinderung von Abnutzung und in bezug auf Hochdruckeigenschaften verbessert werden können, wenn man ihnen eine untergeordnete Menge einer öHöslichenPhosphon-Verbindung mit der nachstehenden Formel einverleibt:
• Schmiermittelgemisch
R-S-CH2-P
(D
XR1
In dieser Formel bedeutet R einen Kohlenwasserstoffrest mit mindestens 6 Kohlenstoffatomen, wobei es sich vorzugsweise um einen geradkettigen Alkylrest mit 10 bis 18 Kohlenstoffatomen handelt. Die R1, welche gleich oder verschieden sein können, bedeuten Wasserstoff, einen aliphatischen oder cycloaliphatischen Rest oder einen kationischen Rest, gebildet aus einem mehrwertigen Metall oder einem aliphatischen Amin, während X Sauerstoff oder Schwefel ist und die X ebenfalls gleich oder verschieden sein können. Bevorzugte Verbindungen von der allgemeinen Formel (I) haben folgende Struktur:
C10-18—Alkyl — S — CH2 — P ;
,OH
OH
(Π) Anmelder:
. SheU Internationale Research , Maatschappij N.V., Den Haag
Vertreter: Dr. K. Schwarzhans
und DipL-Chem. Dr. phil. E. Jung, Patentanwälte,
München 19, Romanplatz 10
Beanspruchte Priorität: " V. St v. Amerika vom 13. April 1959 (Nr. 805 686)
George Milton Calhoun, Berkeley, Calif; '(V. St. Α.), ist als Erfinder genannt worden
bzw. die Struktur der Aminsalze wie:
OH
/OH-(A)
0-I8-Alkyl- S-CH2- K
(IV)
OH · (A)
Bei den vorstehend angegebenen Formeln wird bevorzugt, daß A ein primäres oder sekundäres Amin, z. B. ein C8_30-primäres geradkettiges Amin bedeutet, z.B. Octylamin, Laurylamin, Stearylamin, oder ein verzweigtkettiges primäres aliphatisches Amin, z. B. ein tert. C8_24-Alkylamin oder ein C5 _ .^-sekundäres aliphatisches Amin, wie Diamylamin, Di-2-äthylhexylamin, Didecylamin. Unter den metallischen kationischen Resten werden solche von Erdalkalimetallen, z. B. Ca oder Ba, bevorzugt.
Es sind bereits halogenhaltige Phosphonsäuremonoester als Zusatzstoffe für Schmiermittel bekanntgeworden, die gegebenenfalls auch Schwefel enthalten können und bei denen dann der Schwefel koordinativ
309 619/231
an das Phosphoratom gebunden ist. Abgesehen davon, daß ein Halogengehalt nicht immer bei Hochdruckzusatzstoffen erwünscht ist, unterscheiden sich die Phosphonsäureester gemäß der Erfindung auch dadurch von den bekannten Zusatzstoffen, daß sich bei ersteren der Schwefel in der an das Phosphoratom gebundenen Kette mit dem Kohlenwasserstoffrest R befindet.
Weiterhin ist die Herstellung ganz spezieller, in durch Behandlung von Decylmercaptomethylphosphonsäure mit Butylalkohol in einer alkoholischen Lösung bei etwa 60° C und nachfolgendes Extrahieren des Esters mit Äther.
Beispiel 4
Das Di-2-äthylhexylaminsalz von Decylmercaptomethylphosphonsäure wird hergestellt durch Umsetzen
ihrer Zusammensetzung von den erfindungsgemäß io des Reaktionsproduktes von Beispiel 1 mit Di-2-äthyleingesetzten Phosphonverbindungen verschiedenen hexylamin in ausreichender Menge zwecks vollstän-Mercaptoäthanophosphonsäurederivate beschrieben diger Neutralisierung beider Säuregruppen bei etwa worden, die unter anderem als Weichmacher, Insekti- 50° C in einer alkoholischen Lösung, worauf das zide, Schmierstoffe und hydraulische Flüssigkeiten Aminsalz aus der alkoholischen Lösung gewonnen Verwendung finden sollen. Das besondere Problem 15 wird.
der Wirkung als Hochdruckzusätze und verschleiß- Beispiel5
verhindernde Mittel wird dabei außerdem nicht ange- μ
geben. Nach der Arbeitsweise des Beispiels 4 wird das
Die erfindungsgemäß verwendeten Phosphonver- tert.-Octadecylaminsalz von Decylmercaptomethylbindungen werden hergestellt durch Umsetzen eines ao phosphonsäure hergestellt unter Anwendung von Mercaptans oder Mercaptids mit mindestens 6 Kohlen- tert-Octadecylamin an Stelle von Di-2-äthylhexylstoffatomen mit einer Halogenmethylphosphonver- amin.
bindung, wie z. B. Halogenmethylphosphonsäure oder Es wurden ferner die folgenden Verbindungen her-
Halogenmethylphosphonat, oder mit ihren Thioderi- gestellt: vaten in geeigneten Lösungsmitteln, z. B. in einer wäßrigen alkoholischen Lösung bei Siedetemperatur unter Rückfluß, bis die Reaktion beendet ist, was normalerweise 1 bis etwa 5 Tage erfordert.
Eine bevorzugte Arbeitsweise zur Herstellung der Zusatzstoffe besteht in der Umsetzung eines Natrium- oder KaIiUm-C10 _18-alkylmercaptids mit einem Natrium- oderKaliumsalz einer Halogenmethylphosphonsäure, vorzugsweise der Chlormethylphosphonsäure, in einer alkoholischen Lösung unter Rückfluß und unter einer inerten Atmosphäre. Das sich bildende Salz wird dann mit einer starken Säure, wie Salzsäure, behandelt, um die freie Alkylmercaptomethylphosphonsäure in Freiheit zu setzen, welche in die entsprechenden Metallsalze oder Aminsalze von Teilestern oder vollständigen Estern übergeführt werden kann.
Die folgenden Beispiele erläutern die Herstellung der Phosphonverbindungen. Für das Herstellungsverfahren an sich wird jedoch im Rahmen dieser Erfindung kein Schutz beansprucht.
Octyhnercaptomethylphosphonsäure, Dodecylmercaptomethylphosphonsäure, Cyclohexylmercaptomethylphosphonsäure, Benzylmercaptomethylphosphonsäure, Phenylmercaptomethylphosphonsäure, Dibutyldecylmercaptomethylphosphonsäure, Dithiobutyldodecyhnercaptomethylphosphonat, Dibutylphenylmercaptomethylphosphonat, Dithiooctylcyclohexyhnercaptomethylthiophosphonat,
Dioctylaminodecylmercaptomethylphosphonat, Dioctadecylaminphenyhnercaptomethylphosphonat,
tert.-Octadecylamindodecyhnercaptomethylphosphonat.
Die gemäß vorliegender Erfindung eingesetzten Phosphorverbindungen stellen öllösliche Stoffe dar und sie können in Mengen von etwa 0,1 bis etwa %, vorzugsweise zu etwa 0,5 Vo bis etwa 5,0 Gewichtsprozent, berechnet auf die gesamte Mischung als Schmierzusätze, verwendet werden.
Geeignete Schmieröle sind mineralische oder synthetische Öle mit einem Viskositätsbereich von SUS bei 37,8° C bis 250 SUS bei 98,9° C. Die mineralischen Schmieröle können aus paraffinischen, naphthenischen oder asphaltischen Roherdölmischun-
Beispiel 1
Stöchiometrische Mengen des Kaliumsalzes von
Decylmercaptan und Monochlormethylphosphonsäure werden in einer wäßrigen Lösung von Äthylalkohol dispergjert und das Gemisch am Rückfluß bei 78° C in einer Stickstoffatmosphäre während etwa eines Tages erhitzt. Das gebildete Kaliumdecylmercaptomethylphosphonat wird dann mit starker Salzsäure
behandelt zwecks Freisetzung der freien Phosphon- 55 gen oder Mischungen derselben gewonnen werden.
säure, die durch Extrahieren mit Äther gewonnen Synthetische Öle umfassen die Kohlenwasserstofföle,
wird. wie polymerisierte Olefine, alkylierte Aromaten, isoBeispiel 2 merisierte Wachse sowie sauerstoffhaltige Öle, wie
Polymerisate von Alkylenglykolen und Alkylenoxyden, Gemäß der Arbeitsweise von Beispiel 1 wird die 60 z. B. Mischpolymerisate aus Äthylen- und 1,2-Pro-
Verbindung Phenylmercaptomethylphosphonsäure pylenoxyd, den Mono- und Diolen sowie ihren Esterderivaten. Andere geeignete synthetisch sauerstoffhaltige Öle sind die Ester aliphatischer zweibasischer Säuren, wie Di-2-äthylhexylsebazat oder Di-2-äthyl-65 hexyladipat. Die Kohlenwasserstofföle können vermischt werden mit trocknenden ölen, wie Rizinusöl, Specköl u. dgl., und/oder mit synthetischen Ölen, wie oben erwähnt bzw. mit Silikonpolymeren. Zwei
unter Verwendung des Kaliumsalzes von Phenylmercaptan als Ausgangsmaterial hergestellt.
Beispiel 3
Der Dibutylester von Decyhnercaptomethylphosphonsäure gemäß Beispiel 1 wird hergestellt
typische Öle A und B von paraffinischem bzw« naphthenischem Charakter haben folgende Eigenschaften: . -.-. ■■,:.=:.. .
Mischung H
Fließpunkt, 0C...
Flammpunkt, ° C .
Viskosität,
SUS bei 98,9° C
Viskositätsindex ..
A (SAElOW)
-23,3 198,9
44 90
(SAE 30) Zusatzstoff nach Beispiel 1 .,....:..:... ,5% Polyäthylenpropylenglycol mit einer SUS-Viskosität bei 37,8° C von 660 Rest
Mischung I
-20,6 212,8
58 60
Zusatzstoff nach Beispiel 1 2%
Di-2-äthylhexylsebazat ...:.... Rest
Andere geeignete Öle sind die Gasturbinen-Schmieröle mit folgenden Eigenschaften:
Sorte 1010 1065
148,9 240,6
Flammpunkt, 0C -23,3 -17,8
Fließpunkt, 0C
Viskosität, 59,4 530
SUS bei 37,8° C 0,02 0,01
Neutralisationszahl keine kerne
Asche
Die folgenden Zusammensetzungen dienen als Beispiele für die Erfindung, wobei sich die Prozentsätze auf Gewicht beziehen.
Mischung A
Zusatzstoff nach Beispiel 1 ............. 2e/o
1010-Mineralöl Rest
Mischung B
Zusatzstoff nach Beispiel 2 2%
1010-Mineralöl Rest
Mischung C ν '.""'...
Zusatzstoff nach Beispiel 5 2%
1010-Mineralöl , Rest
Mischung D -
Zusatzstoff nach Beispiel 4 .........: 2%
1010-Mineralöl ._. Rest
Mischung E
Zusatzstoff nach Beispiel 2 1%
SAE-30-Mineralöl Rest
Mischung F
Zusatzstoff nach Beispiel 1 2%
SAE-90-Mineralöl .................... Rest
Mischung G
Zusatzstoff nach Beispiel 1 2%
Laurinsäure .;.................. 2%
SAE-90-Mineralöl . . . - ...... Rest
Gemische gemäß vorliegender Erfindung wurden hinsichtlich ihrer Hochdruckeigenschaften besonders geprüft auf einer Vorrichtung mit Stirnradgetriebe. Die Vorrichtung besteht im wesentlichen aus zwei
geometrisch ähnlichen Zahnradpaaren, die durch zwei parallele Wellen verbunden sind. Die Zahnradpaare sind in getrennten Getriebsgehäusen angeordnet, welche auch die tragenden Kugellager enthalten. Eine der Wellen besteht aus zwei Teilen^ die durch eine Kupplung verbunden sind! Die Belastung wird herbeigeführt durch Bremsen einer Seite der Kupplung und Einwirkung eines Drehmoments auf die andere Seite. Die Prüfungsbedingungen waren folgende:
Geschwindigkeit, U/min 3200
Öltemperatur, 0C 100
Ölumlaufgeschwindigkeit, cm3/sec .. 10 Belastungserhöhung
jeweils nach 5 Minuten
Die Ergebnisse der Prüfung skid in Tabelle I zusammengestellt, und zu Vergleichszwecken sind auch die Resultate angegeben, die bei Anwendung des Basisöls allein oder mit anderen bekannten Hochdruckgemischen erzielt werden. . ;
Tabelle I
Mischung
' ■ ■"■ ■
Mischung A bis I
1010-Mineralöl
+ 21Vo C16-Alkenylbernsteinsäure
1010-Mineralöl
+ 2fl/o Malonsäure
1010-Mineralöl ........
+ 2% 3-Hexadecyladipinsäure ...
1010-Mineralöl
4- 2% Dodecylmercaptobernstein— säure ..;........
1010-Mineralöl "-"--■-
+ lOfl/oGlycerinmonooleat ........
1010-Mineralöl
+ 2«/o C13H27OH (»OXQ«-Prozeß>
1010-Mineralöl
Belastung bis zum Pressen kg/cm2
392 98
196 98
98 .126
42 ■42
Die folgenden Zusammensetzungen wurden ebenfalls hinsichtlich ihrer Beständigkeit geprüft nach dem Dornte-Oxydationstest. (beschrieben in »Natural Pe-
troleum News« vom 17. Dezember 1941, S. 294 bis 296). Es wurden folgende Bedingungen eingehalten: 150° C, Eisenkatalysator; mineralische Weißölbasis. Die. Zusatzmenge in jedem Beispiel betrug . etwa Gewichtsprozent. Die Ergebnisse sind in Tabelle JI zusammengestellt.
Tabelle Π
Zusatzstoff
1. n-Decylmercaptomethylphosphonsäure
Xi-C10H21-S-CH2-P-(OH)2
2. 2-Äthylhexyünercaptomethylphosphonsäure
CH ,CH2CH-S- -CH. O
CH3CH5 I
C2H5
-P-(OH)2
3. n-Decyhnercaptoäthylphosphonsäure
I!
n-C10H21 — S — CH2CH2 — P — (OH)2 Induktionsperiode
Stunden
140
Die Mercaptomethylphosphonverbindungen der vorliegenden Erfindung sind auch brauchbar bei der Herstellung von schwerbelasteten Schmierölen, die noch untergeordnete Mengen anderer üblicher Zusatzstoffe enthalten können, wie Silikon-Antischäumungsmittel, ein Alkylphenol als Antioxydationsmittel, Polyacrylester als Verbesserungsmittel für den Viskositätsindex, langkettige Fettsäuren, wie Laurin- und Ölsäure, Mittel zur Verbesserung der Öligkeit.
Es ist gefunden worden, daß die kombinierte Zugäbe der Phosphonoverbindungen gemäß vorliegender Erfindung und eines phenolischen Antioxydationsmittels, vorzugsweise eines ρ,ρ'-Methylenbisphenols zu einem Schmieröl zu einem synergetischen oxydationshindernden Effekt führt. Dies kann erläutert werden durch die folgenden Ergebnisse, die bei dem umstehend erwähnten Dornte-Oxydationstest erhalten wurden, wobei die Zusatzkonzentration 0,6 Gewichtsprozent betrug.
beständigkeit und können demnach innerhalb weiter Grenzen (z. B. von 3 :1 bis 1: 3) schwanken.

Claims (8)

PATENTANSPRÜCHE:^
1. Schmiermittelgemisch auf Schmierölbasis, gekennzeichnet durch einen untergeordneten Gehalt einer öllöslichen Phosphonverbindung der allgemeinen Formel
j!
XR1
Tabelle III
Zusatzstoff Induktions periode Mono-n-butylester der n-Decyl- Stunden 1. mercaptomethylphosphonsäure.... 4,4'-Methylen-bis-(2,6-ditert.butyl- 48 2. phenol) 1 + 2 (Gesamtkonzentration 17,5 3. 0,6 Gewichtsprozent, nämlich 0,3 + 0,3%) 186
50
55
60
Die Mengenverhältnisse der jeweils bei den letztbeschriebenen Versuchen verwendeten. Zusatzstoffe haben nur einen geringen Einfluß auf die Oxydationsin welcher R einen Kohlenwasserstoffrest mit mindestens 6 Kohlenstoffatomen darstellt, R1 gleich oder verschieden ist und Wasserstoff, einen aliphatischen oder cycloaliphatischen Rest oder einen kationischen Rest, gebildet aus einem mehrwertigen Metall oder einem aliphatischen Amin, darstellt, X Sauerstoff oder Schwefel darstellt und ebenfalls gleich oder verschieden sein kann.
2. Schmiermittelgemisch nach Anspruch 1, dadurch gekennzeichnet, daß R einen Alkylrest mit 10 bis 18 Kohlenstoffatomen darstellt.
3. Schmiermittelgemisch nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß X Sauerstoff ist.
4. Schmiermittelgemisch nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß das mehrwertige Metall ein Erdalkalimetall ist.
5. Schmiermittelgemisch nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß das aliphatische Amin ein primäres Amin mit 8 bis 30 Kohlenstoffatomen, vorzugsweise ein tert. C8_24-Alkylamin ist.
6. Schmiermittelgemisch nach Anspruch 1 bis 5, gekennzeichnet durch einen Gehalt an der Phos-
phonverbindung in einer Menge von 0,1 bis 25, vorzugsweise 0,5 bis 5 Gewichtsprozent, berechnet auf das Gesamtgemisch.
7. Schmiermittelgemisch nach Anspruch 1 bis 6, dadurch gekennzeichnet, daß es zusätzlich eine untergeordnete Menge eines als Schmiermittelzusatz bekannten Alkylphenols, vorzugsweise p,p'-Methylenbisphenol, enthält.
8. Schmiermittelgemisch nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß es eine Phosphonverbindung enthält, die durch Umsetzung eines Mercaptans oder Mercaptides mit mindestens 6 Kohlenstoffatomen mit einer Halogenmethyl-
phosphonverbindung der allgemeinen Formel
Halogen — CH2
XR1
in einem inerten Lösungsmittel unter Rückfluß erhalten worden ist, wobei R1 und X die umstehend erwähnte Bedeutung haben.
In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 935 547, 912251; USA.-Patentschrift Nr. 2535 174.
© 309 619/231 6.63
DES68011A 1959-04-13 1960-04-11 Schmiermittelgemisch Pending DE1151085B (de)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US805686A US3112271A (en) 1959-04-13 1959-04-13 Liquid hydrocarbon composition
US77817A US3238131A (en) 1960-12-23 1960-12-23 Lubricating compositions containing bis(phosphono-methyl) disulfides
US77830A US3112269A (en) 1960-12-23 1960-12-23 Lubricating compositions containing sulfoxy alkyl phosphono compounds
US162924A US3226322A (en) 1961-12-28 1961-12-28 Liquid hydrocarbon composition and additives therefor
US183036A US3232882A (en) 1962-03-28 1962-03-28 Lubricating oil compositions
US305809A US3198826A (en) 1959-04-13 1963-08-30 Alkyl mercaptomethylphosphonic acids
US312329A US3316332A (en) 1959-04-13 1963-09-30 Sulfoxy alkyl phosphono compounds
US472663A US3309428A (en) 1959-04-13 1965-07-16 Oil-soluble bis(methylphosphonodisulfides

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2221646A1 (de) * 1971-05-05 1972-11-09 Esso Res And Engineering Co Schmieroelzubereitungen

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957858A (en) * 1970-04-13 1976-05-18 Monsanto Company Substituted ethane diphosphonic acids and salts and esters thereof
US4082793A (en) * 1977-02-09 1978-04-04 The United States Of America As Represented By The Secretary Of The Navy Aromatic phosphinic acids containing sulfone linkage
US4317795A (en) * 1979-04-05 1982-03-02 Phillips Petroleum Company Catalytic alkylation of hydrocarbons
FR2631039A1 (de) * 1988-05-06 1989-11-10 Elf France
US5443744A (en) * 1993-12-17 1995-08-22 Exxon Chemical Patent Inc. Non silicone aggresive alkyl phosphates as lubrication oil additives

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Publication number Priority date Publication date Assignee Title
US2535174A (en) * 1949-04-07 1950-12-26 Us Rubber Co Mercaptoethanephosphonates
DE912251C (de) * 1950-08-11 1954-05-28 Bataafsche Petroleum Schmiermittel mit einem Gehalt an halogen- und phosphorhaltigen Verbindungen
DE935547C (de) * 1952-12-09 1955-11-24 Henkel & Cie Gmbh Verfahren zur Herstellung von Kondensationsprodukten mit organisch gebundenem Phosphor

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Publication number Priority date Publication date Assignee Title
BE561989A (de) * 1954-11-06
US2857304A (en) * 1954-11-23 1958-10-21 Monsanto Chemicals Dithiodimethylene diphosphonates
US2793225A (en) * 1955-08-19 1957-05-21 Union Oil Co Process for preparing phosphonic acid esters

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535174A (en) * 1949-04-07 1950-12-26 Us Rubber Co Mercaptoethanephosphonates
DE912251C (de) * 1950-08-11 1954-05-28 Bataafsche Petroleum Schmiermittel mit einem Gehalt an halogen- und phosphorhaltigen Verbindungen
DE935547C (de) * 1952-12-09 1955-11-24 Henkel & Cie Gmbh Verfahren zur Herstellung von Kondensationsprodukten mit organisch gebundenem Phosphor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2221646A1 (de) * 1971-05-05 1972-11-09 Esso Res And Engineering Co Schmieroelzubereitungen

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NL272803A (de)
NL272804A (de)
NL250415A (de)
GB1010536A (en) 1965-11-17
BE611851A (de)
NL287245A (de)
GB955357A (en) 1964-04-15
GB957772A (en) 1964-05-13
NL109943C (de)
US3198826A (en) 1965-08-03
US3316332A (en) 1967-04-25
US3309428A (en) 1967-03-14
BE626579A (de)

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