DE2143848A1 - Schmierfett - Google Patents

Schmierfett

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Publication number
DE2143848A1
DE2143848A1 DE19712143848 DE2143848A DE2143848A1 DE 2143848 A1 DE2143848 A1 DE 2143848A1 DE 19712143848 DE19712143848 DE 19712143848 DE 2143848 A DE2143848 A DE 2143848A DE 2143848 A1 DE2143848 A1 DE 2143848A1
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Germany
Prior art keywords
weight
percent
acid
terpolymer
component
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Application number
DE19712143848
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English (en)
Other versions
DE2143848C3 (de
DE2143848B2 (de
Inventor
Paul Gravenchon Fau (Frankreich), Petrucco, Richard James, Laurel Springs, NJ (VStA)
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Mobil Oll Corp , New York, N Y (V St A)
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Publication of DE2143848A1 publication Critical patent/DE2143848A1/de
Publication of DE2143848B2 publication Critical patent/DE2143848B2/de
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Publication of DE2143848C3 publication Critical patent/DE2143848C3/de
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Description

DR. E. WIEGAND DIPL-ING. W. NIEMANN DR. M. KÖHLER DIPL-ING. C. GERNHARDT
MÖNCHEN HAMBURG TELEFON: 55547« 8000 MÖNCHEN 15, TELEGRAMMe=KARPATENT NUSSBAUMSTRASSEIO
1, September 1971 W. 40 465/71 We
Mobil Oil Corporation New York, N.Y.
Schmierfett
, Die Erfindung betrifft Schmierfettzusammensetzungen, insbesondere Schmierfettzusammensetzungen mit erhöhtem Widerstand gegen das Auswaschen λ mit Wasser und Widerstand gegen das Erweichen bei hohen Temperaturen.
Bißher ist der Vorschlag bekannt, Äthylen-Vinylacetat-Oopolymere Schmierfetten einzuverleiben, um deren Widerstand gegen das Auswaschen mit Wasser zu verbessern. Bei bestimmten Schmierfetten jedoch hat sich der Gebrauch solcher Copolymere als nicht zweckmäßig erwiesen z. B, bei Ansätzen, deren Verdickung durch Calcium-Blei-Komplexe bewirkt war, bei welchen kein ausgeprägter Widerstand gegen das Auswaschen! mit Wasser festzustellen war. Darüberhinaus wurde ermittelt,
2098U/U29
daß solche Schmierfette wie auch andere Schmierfettansätze nicht nur einen geringen Widerstand ge^en das Auswaschen mit Wasser aufweisen, sondern auch dazu neigen, bei hoher Temperatur der Umgebung zu erweichen.
Gemäß der Erfindung sind Schmierfettzusammensetzungen vorgesehen, die einen erhöhten Widerstand gegen das Auswaschen mit Wasser und Widerstand gegen das Erweichen bei hohen Temperaturen haben, indem sie einen verbesserten Zusatz von einem Äthylen-Vinylester-Organisehe Säure Terpolymer, enthalten, wobei eine geringere Menge ausreicht, die vorerwähnten Widerstandseigenschaften einzuverleiben, wie es im folgenden ausführlicher beschrieben ist.
Mehr ins Einzelne gehend haben die Terpolymers der Scbmierfettansätze der Erfindung einen Schmelzindex von 0,5 bis 200 und enthalten:
1. mindestens 65 Gewichtsprozent Äthylen;
2. mindestens 5 Gewichtsprozent eines zweiten äthylenisch ungesättigten Monomeren, welches ein Ester aus der Gruppe der Vinylester der niedrigen ( 1 bis 6 C-Atome) gesättigten aliphatischen Carbonsäuren-ist; die Alkylacrylate, die Alky!methacrylate, die Dialkylmaleate und die Dialkylfumarate der niedrigen ( 1 bis 6 C-Atome) aliphatischen Alkohole;
3. 0,01 bis 3 Gewichtsprozent eines dritten äthylenisch ungesättigten Monomeren aus der Gruppe der Acrylsäure, der Methacrylsäure, der Itaconsäure, Maleinsäure und der Fumarsäure; die Anhydride der Itaconsäure, Maleinsäure und Fumarsäure, die Alkyl-Hydrogen-Maleate und die Alkyl-Hydrogen· Fumarate; die Monoacrylate und die Monomethaorylate der Glykole; 2-Hydroxy-3-aminopropyl-ally3äther;Allyl-glycerinäther DivinylglykoljS-Dimethylaminoäthylacrylat, 2-Bimethylaminoäthylmethaorylat und N-Vinylpyrrolidon.
Die Herstellung der verbesserten Zusätze des oben 2098U/U29
erwähnten Terpolymers sind in der US-Patentschrift 3,215,657 ausführlich beschrieben.
Viele verschiedenartige Verdickungsmittel können für die Schmierfette entsprechend der Erfindung eingesetzt werden. Inbegriffen in diese Verdickungsmittel sind Alkali- und . Erdalkaliseifen der Pette und Fettsäuren mit etwa 12 his 30 C-Atomen je Molekül. Geeignete Metalle sind Natrium, Lithium, Calcium und Barium. Fettsubstanzen stellen dar: Stearinsäure, Hydroxystearinsäure, Stearin, Baumwollsamenölsäure, Ölsäure, Palmitinsäure, Myrietinsäure und gehärtete Pischöle (hydrogenated fish oils).
Andere Verdickungsmittel bestehen aus Komplexen von Salzen und Salz-Seifen wie Calciunistearat-acetat (US-Patent 2,197,263 ); Bariumstearat-acetat (US-Patent 2,564,561); Calciumstearat-caprylat-acetat-Komplexe (US-Patent 2,999,o65); Calciumcaprylat-acetat (US-Patent 2,999,o66); und Calciumsalze und-seifen von Säuren mit . niederem, mit mittlerem und hohem Molekulargewicht und von Nußölsäuren; und Aluminiumkomplexe.
Eine andere Gruppe von Verdickungsmittel enthält substituierte Harnstoffe, Phtalocyanine, Indanthrene, Pigmente wie Perylimide, -Pyromellitdiimide, Diaminocyanursäure und Buss.
Als andere kolloidale Verdickungsmittel werden in den neuen Schmierfettansätzen im wesentlichen hydrophobe Tone verwendet. Solche Verdickungsmittel können aus Tonen hergestellt werden, welche ursprünglich hydrophilen Charakter haben, jedoch vor dem Einsatz als Komponente eines Schmierfettansatzes durch Einführung von langkettigen Kohlenwasserstoff radikalen in die Oberfläche der Partikel des Tones in die hydrophobe Beschaffenheit umgewandelt worden Bind.
2098 U/,14.2
Sie können ζ. B. einer vorbereiisiden Behandlung durch ein organisches kationisches oberflächenaktives Mittel wie einer Onium-Verbindung unterworfen werden. Geeignete Oiiium-Verbindungen sind Tetra-alkyl-ämmonium-chloride wie.DirnethyJLdioctadecylammoniumchlorid, Dirnethyldibenzylammo'niumchlorid und Mischungen davon. Pur diese dem Fachmann wohlbekannte Methode der Umwandlung bedarf es wohl keiner weiteren Erläuterung und sie stellt auch nicht etwa einen Teil der Erfindung, dar. Kurz gesagt: die Tone, welche als Ausgangsmaterial zur Bildung von Verdickungsmitteln zum Gebrauch in Schmierfettansätzen gebraucht werden, können natürlich vorkommende und chemisch unmodifizierte Tone umfassen. Diese Tone sind Silicate von komplexer kristalliner Struktur, deren genaue Zusammensetzung nicht zum Gegenstand einer genauen Beschreibung zu machen ist, da sie von einer natürlichen Fundstelle zur anderen weitgehend schwanken. Diese Tone können als anorganische komplexe Silicate bezeichnet werden wie Aluminiumsilicat, Magnesiumsilicat, Bariumsilicat und ähnliche, die zusätzlich zu ihrem Silicatgitter wechselnde Mengen kationisch austauscifcarer ü-ruppen v/ie z. B. Natrium enthalten.
Inbegriffen in diese hydrophilen Tone, die für die Umwandlung in die.gewünschten Verdickungsmittel besonders geeignet sind, zeigen sichMmtmorillonite wie Bentonit, Attapulgit, Hektorit, Illit, iaponit, Sepiolit, Biotit, Vermiculit, Zeolith-Tohe und ähnliche.
Bevorzugte Verdickungsmittel sind Calcium-Bleiacetat-Komplexe, wie sie in Schmierfettansätzen gebraucht und im US-Patent 2,898,297 beschrieben sind. Solche Verdickungsmittel umfassen eine Mischung von (A) Erdalkalimetallseifen und deren Salzen, wobei das aus der Gruppe der Erdalkalien ausgewählte■Metall aus Calcium besteht, und einer Mischung (B) von Calcium und Barium, wobei das chemisch gebundene Äquivalentgewicht von Barium nicht mehr als etwa 15 $ in dieser Mischung ausmacht, gerechnet gegen Calcium bei diesen Seifen und Salzen. Dabei iet die Mischung A dieser
2098U/U29
BAD
-V-
Seifen und Salze in der eine Schmierfett bildenden Menge vorhanden. Die Metallsalze der Mischung A sind Salze einer niedermolekularen, unsubstituierten, gesättigten Monocarboxylsäure (I) mit 1 bis 6 C-Atomen je Molekül. Die Metallseifen der Mischung A sind Seifen verschiedener Säuren mit der Säure I, wie aus der folgenden Tabelle ersichtlich:
Gewichtsprozent Säure Zahl der C-Atome der Gesamt-Säuren
(I)mit niederem Molekular- μ
gewicht 1 bis 6 10 bis 50 f
(Il)mit mittl. Molgekulargewicht "7 bis 12 5 bis
(Ill)mit hohem Molekulargewicht wenigstens 13 5 bis
(IV) Ölsäuren 8 bis 18 25 bis
Säure II ist ausgewählt aus unsubstituierten, monohydroxysubstituierten und methylsubstituierten gesättigten aliphatischen Monocarbonsäuren. Säure III ist ausgewählt aus unsubstituierten und monohydrcxysubstituierten gesättigten aliphatischen Monocarbonsäuren und montfg'esättigten aliphatischen Monocarbonsäuren. Die Ölsäuren sind IJußr λ ölsäuren, welche Mischungen von Säuren umfassen, dif. von
8 bis 18 C-Atomen je Molekül und vorzugsweise C^2 ^i-3 ^14" Säuren enthalten, außerdem mindestens 0,5 bis zu 5 Gewichtsprozent (ausgedrückt in PbO) einer Bleiverbindung mit mindestens einer der Säuren I bis IV.
Bei den Schmierfetten der Erfindung können Mineralöle oder auch synthetische Öle mit Schmierviskosüät Anwendung finden. Brauchbare Mineralöle sind solche mit einer Vis- koeität (SUS) von mindestens 40 see bei 37,80C (1oo°F) und
2 0,9 8 H / U 2 9
BAD
"besonders solche im Bereich von etwa 60 "bis etwa 6000 see bei 37,80C.
Synthetische träger anstelle von Mineralöl oder in Verbindung damit sind anwendbar. Geeignete synthetische Träger sind: Polypropylen, Polypropylenglykol, Trimethylolpropanester, Neopentyl- und Pentaerythrit-Ester, Di-(2 äthylhexyl)-sebacat, Di- (2 äth;/l-hexyl)-adipat, Dibutylphtalat, Polyäthylenglykol, Di-2-äthylhexoat, Fluor-Kohlenstoff verbindungen, Perfluoroalkylpolyäther, Ester der Kieselsäure, Silane, Ester phosphorhaltiger Säuren, flüssige Harnstoffe, Ferrocene-Derivate, gehärtete Mineralöle Polyphenyls des Ketfcentyps Siloxane, weiterhin Silicone (Polysiloxane) Fluorsilieone, Alkyl-substituierte Diphenyläther z. B. Butyl-substituierte Bis-(p-phenoxyphenyl ) äther und Phenoxyphenyläther.
Andere Kohlenwasserstofföle schliessen auch synthetische Kohlenwasserstoffpolymere ein, welche verbesserte Viskositätsindices aufweisen. Sie werden hergestellt durch Polymerisation eines Olefins oder einer Mischung von Olefinen mit 5 bis 18 C-Atomen im Molekül in Gegenwart von aliphatischen Halogeniden und einem Katalysator vom Zieglertyp.
Es ist jedoch klar, daß die dabei in Betracht gezogenen Mischungen auch andere charakteristische Materialien enthalten können. Es können z. B. Antioxidantien wie Phenyl pC-naphtylarain (PAlT), Korrosionsinhibitoren, Mittel für extrem hohe Drücke, Viskositätsindexmittel und Füllstoffe Verwendung finden. Unter diesen Materialien "befinden sich kolloidale Kieselsäure, Calciumacetat, Calciumcarbonat und
Molybdendisulfid. Derartige charakteristische Materialien beeinträchtigen nicht den Schmierwert der Zusammensetzung der Erfindung noch beeinträchtigen sie die nützlichen Eigenschaften der Terpolymere; vielmehr sind diese charakteristi-
2098U/U29
2H3848
sehen Materialien dazu dienlich, den einzelnen Zusammensetzungen, in die sie einverleibt werden, ihre üblichen Eigenschaften zu verleihen.
Die Schmierfette der Erfindung können in Übereinstimmung mit den herkömmlichen IPertigungsmethoden wie jede "beliebige Mischmethode, wodurch feste Partikel mit einer Flüssigkeit benetzt werden, hergestellt werden. Geeignete Einrichtungen für diesen Zweck stellen Kolloidmühlen, 3-Walzenfarbmühlen und Manton-Gaulin Homogenisiermaschine und ähnliche dar.
In Bezug auf das Terpolymerverbesserungsmittel der Erfindung enthalten bevorzugte Terpolymere 20 bis 30 Gewichtsprozent der vorerwähnten Komponente der Gruppe 2 und zwar der zweiten äthylenisch ungesättigten monomeren Komponente; und p',1 bis 1 Gewichtsprozent der vorerwähnten Komponente, der Gruppe 3 und zwar der dritten äthylenisch ungesättigten monomeren Komponente. Maßgebende bevorzugte Terpolymere-enthalten außer Äthylen 20 bis 30 Gewichtsprozent Vinylacetat und 0,1 bis 1 Gewichtsprozent Acrylsäure; 20 bis 30 Gewichtsprozent Vinylacetat und
0,1 bis 1 Gewichtsprozent Methacrylsäure, 20 bis 30 GewiehtsprozentÄthylacrylat und 0,1 bis 1 Gewichtsprozent Acrylsäure; 20 bis 30 Gewichtsprozent Äthylacrylat und · 0,1 bis.1 Gewichtsprozent Methacrylsäure; 20 bis 30 Gewichtsprozent Methylmethacrylat und 0,1 bis 1 Gewichtsprozent Acrylsäure; und 20 bis 30 Gewichtsprozent Methylmethacrylat und 0,1 bis 1 Gewichtsprozent Methacrylsäure (wobei die Zahlenangaben nur Näherungswerte sind.)
2098U/U29
2U3848
Was die Menge der Terpolymerverbesserungsmittel "betrifft, wird letzteres, wie vorstehend beschrieben, in geringer Menge verwendet, welche ausreicht, dem Schmierfettansatz die gewünschte Widerstandsfähigkeit gegen das Auswaschen durch Wasser und den Widerstand gegen das Erweichen bei hohen Temperaturen zu verleihen. Besonders bevorzugt sind Schmierfette, in welchen das Terpolymer in einer Höhe von mindestens etwa 0,01 Gewichtsprozent vorhanden ist» Für die meisten Zwecke erbringt die Anwendung des Terpolymers in einer Höhe von etwa 0,1 bis etwa 5 Gewichtsprozent eine höchst zufriedenstellende Verbesserung der Schmierfettzusammensetzungen.
Um die Verbesserung des Widerstandes gegen das Auswaschen durch Wasser und des Widerstandes gegen Erweichen bei erhöhter Temperatur nachzuweisen, wenn das oben beschriebene Terpolymer angewendet wird, wurde ein geeignetes Schmierfett mit komplexen Calcium-Blei-Verbindungen hergestellt. Es enthielt in Gewichtsteilen ausgedrückt 16 tfo Verdickungsmittel, 80 # Träger und 4 °ß> Additive.
Das Verdickungsmittel wurde gebildet durch Reaktion eines geringen stöchiometrischen Überschusses von Metallbase, bestehend aus 4,5· Teilen Kalk zu 1 Teil Bleiglätte mit Fettsäuren, bestehend aus'~4,5 Teilen Kalk zu 1 Teil Bleiglätte mit Fettsäuren, bestehend aus 27»5 Gewichtsprozent einer niedermolekularen Säure, nämlich Essigsäure, -58 Gewichtsprozent einer Säure von mittlerem Molekulargewicht, nämlichCaprylsäure, und 14,5 Gewichtsprozent Säuren mit hohem Molekulargewicht, Kokusfettsäuren (Cj2 bis C10). Der Träger bestand aus einem naphtenischen, durch Lösungsmittel gereinigten Mineralöl, mit einer Viskosität von 800 SUS bei 37,80C (10O0F) bzw. 70 SUS bei 1000C (2100F). Die Additive enthielten3-Gewichtsprozent eines chlorierten V/achses als Hochdruckmittel, 0,8 Gewichtsprozent eines Antioxidanten, nämlich blockfciiasjphenol und aromatisches Amin, und 1,2 Gewichtsprozent eines Korrosioninhibitors.
2098U/U26
BAD ORIGINAL
2U3848
Wie in den Beispielen der folgenden Tabelle 1 gezeigt ist, wurden unterschiedliche Mengen eines typjaiaa Terpolymers, wie es die Erfindung darstellt, in die oben hergestellten Schmierfette zur Auswertung gebracht. Dieses Terpolymer stellt ein Äthylen-Vinylacetat-Methacrylsäure-Terpolymer dar, hat einen Schmelzindex von 13 und enthält 27,5 Gewichtsprozent Vinylacetat, 0,7 Gewichtsprozent Methacrylsäure und 71,8 Gewichtsprozent Äthylen.
Die "betreffenden Schmierfettansätze, die· die genannten Mengen des oben hergestellten Terpolymers gewichtsmäßig erhalten, wurden dem Standard-Wasserauswaschtest unterzogen (ASTM'D 1264) unter Anwendung eines "breiteren ringförmigen Schildes, um den Durchschnitt des Wassers in das mit Schmierfett "bestrichene lauflager.zu erleichtern.
Einfluß Tabelle I
von Terpolymer auf den
Widerstand gegen Auswaschen
Beispiel Schmierfett Konsistenz
ASTM D217
(Uff/6 0\7)+
Y/asserauswaschtest
ASTM D1264
()'o Auswaschung)
1
2
3
4
Ausgangs-Schmierfett
" +o,3$Terpolymer
11 +0,5/oTerpolymer
" +1,o$Terpolymer
312/328
298/318
272/272
'218/255
25
13
7
4
,py
+ UV//6,0Wr Unbearbeitet/mit 60 Schlagen bearbeitet. ++ Unter Anwendung eines breiteren ringförmigen Schilds.
Aus den Beispielen der vorhergehenden Tabelle 1 wird offenbar, daß die Terpolymere der Erfindung eine starke Wirksamkeit besitzen, um den Schmierfettansätzen gegen
2098U/.U29
das Auswaschen durch Wasser Widerstandskraft zu verleihen.
V/ie anhand der Beispiele der folgenden Tabelle II gezeigt ist, wurden unterschiedliche Mengen des oben beschriebenen, representativen Terpolymers in das oben beschriebene Schmierfett zur Auswertung im Hinblick auf den Widerstand gegen Erweichungswirkung bei erhöhten Temperaturen eingearbeitet.
Tabelle II Einfluß des Terpolymers auf die Erweichungswirkung
Badlagerschwund·
Beispiel Stoff Konsistenz Erweichungswirkung % ^gJ 7§ϊ?*?ί
ASTM D 217 (Grade in Celsius) l^li!^if (W) Ο°°
über5ü
1 Ausgangs- 301/318 21 35 übeFjO 12,1
Schmierfett
2 » + 0,3 256/286 13 20 33 40 4,6
Terpolymer
+UW/60W = Unbearbeitet/mit 60 Schlägen bearbeitet ++ Zu weich, als daß die Penetration hätte, gemessen werden können
Aus den Beispielen der vorhergehenden Tabellen II geht hervor, daß die Terpolymere der Erfindung eine starke Wirksamkeit besitzen, um den Schmierfetten Widerstandskraft gegen das Erweichen bei erhöhten Temperaturen zu verleihen.
20981 4/U29

Claims (4)

2U3848 M Patentansprüche
1. Schmierfett auf der Basis eines Schmiermittelträgers, eines Verdickungsmittels und Äthyleneopolymerenverbesserungsmittels, dadurch gekennzeichnet, daß das Copolymer-Verbesserungsmittel aus einem Terpolymer mit einem Schmelzindex von 0,5 "bis 200 Gesteht, das
(1) mindestens 65 Gewichtsprozent Äthylen
(2) mindestens 5 Gewichtsprozent Vinylester von gesättigten aliphatischen Carbonsäuren, mit 1-6 C-Atomen,Alkylacry- ^
late, Alkylmethacrylate, Dialkylmaleate und Dialkylfumarate ™ aliphatischer Alkohole mit 1-6 C-Atomen und
(3) o,o1 bis 3 Gewichtsprozent eines Monomeren, aus Acrylsäure, Methacrylsäure, Itaconsäure, Maleinsäure und !Fumarsäure; Anhydrid der Itaconsäure, Maleinsäure und Fumarsäure; Alkylhydrogen-maleaten und Alkylhydrogen-fumaraten Monoacrylaten und Monomethacrylaten von Glykolen, 2 Hydroxy-3-aininopropylallyläthor, Allylglycerinäther, Divinglykol, 2-Dimethylaminoäthylacrylat, 2-Dimethylaminoäthylmethacrylat und IT-Vinylpyrrolidon umfaßt.
2. Schmierfett nach Anspruch 1, dadurch g,
daß das Terpolymer 20 bis 30 Gewichtsprozent der Komponente 2 * und 0,1 bis 1 Gewichtsprozent der Komponente (3) enthält.
3. Schmierfett nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Komponente (2) aus Vinylacetat, Äthylacrylat oder Methylmethacrylat besteht.
4. Schmierfett nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Komponente (3) aus Acrylsäure oder Methacrylsäure besteht.
2098U/U29 BAD ORIGINAL
DE2143848A 1970-09-23 1971-09-01 Schmierfett Expired DE2143848C3 (de)

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GB (1) GB1306349A (de)

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DE2341802A1 (de) * 1972-11-07 1974-05-09 Mobil Oil Corp Schmierfett
DE2528600A1 (de) * 1974-07-01 1976-01-22 Mobil Oil Corp Schmierfette und verfahren zu deren herstellung

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US3997455A (en) * 1974-07-01 1976-12-14 Mobil Oil Corporation Paraffinic base greases
DE3136931A1 (de) * 1981-09-17 1983-04-07 Akzo Gmbh, 5600 Wuppertal Copolymere aus (alpha)-(beta)-ungesaettigten dicarbonsaeureestern, verfahren zu deren herstellung sowie deren verwendung als gleitmittel fuer die kunststoffverarbeitung
JPS59150579U (ja) * 1983-03-23 1984-10-08 大金興業株式会社 浄化槽流出水の蒸発散処理装置
CA1290137C (en) * 1984-06-11 1991-10-08 John L. Burba, Iii Intercalations of crystalline lithium aluminates
US4606183A (en) * 1984-11-20 1986-08-19 Amsted Industries Incorporated Lubricated and thermoplastic impregnated wire rope
GB8503382D0 (en) * 1985-02-09 1985-03-13 British Petroleum Co Plc Lubricating grease
US5116522A (en) * 1988-09-08 1992-05-26 Exxon Research And Engineering Company Grease composition containing an ethylene copolymer having a melt index of at least about 40
CA1334965C (en) * 1988-09-08 1995-03-28 Terrance O. Brown Lubricating composition
DE10343901A1 (de) * 2003-09-19 2005-04-14 Basf Ag Amidgruppenhaltige Ethylenterpolymere und ihre Verwendung
US20050209114A1 (en) * 2004-03-19 2005-09-22 The Lubrizol Corporation, A Corporation Of The State Of Ohio Functionalized polymer composition for grease
US7429555B2 (en) * 2004-04-30 2008-09-30 Rohmax Additives Gmbh Lubricating grease with high water resistance

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US2698299A (en) * 1951-11-27 1954-12-28 Socony Vacuum Oil Co Inc Modified acidic copolymer-fatty acid soap greases
DE1124174B (de) * 1959-02-20 1962-02-22 Exxon Standard Sa Schmierfett
US3076764A (en) * 1960-09-30 1963-02-05 California Research Corp Isotactic polymers of 4-methyl-1-pentene as grease thickeners
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Cited By (3)

* Cited by examiner, † Cited by third party
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DE2341802A1 (de) * 1972-11-07 1974-05-09 Mobil Oil Corp Schmierfett
DE2528600A1 (de) * 1974-07-01 1976-01-22 Mobil Oil Corp Schmierfette und verfahren zu deren herstellung
DE2560382C2 (de) * 1974-07-01 1986-07-17 Mobil Oil Corp., New York, N.Y. Schmierfett mit einem paraffinischen Mineralöl als Schmiermittelträger

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DE2143848C3 (de) 1982-04-29
FR2107892B1 (de) 1976-03-26
AU3332971A (en) 1973-03-29
GB1306349A (de) 1973-02-07
CA948616A (en) 1974-06-04
JPS5521079B1 (de) 1980-06-06
FR2107892A1 (de) 1972-05-12
US3705853A (en) 1972-12-12
DE2143848B2 (de) 1981-07-23

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C3 Grant after two publication steps (3rd publication)
8328 Change in the person/name/address of the agent

Free format text: KOHLER, M., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN