DE2143848C3 - Schmierfett - Google Patents
SchmierfettInfo
- Publication number
- DE2143848C3 DE2143848C3 DE2143848A DE2143848A DE2143848C3 DE 2143848 C3 DE2143848 C3 DE 2143848C3 DE 2143848 A DE2143848 A DE 2143848A DE 2143848 A DE2143848 A DE 2143848A DE 2143848 C3 DE2143848 C3 DE 2143848C3
- Authority
- DE
- Germany
- Prior art keywords
- weight
- percent
- acid
- grease
- terpolymer
- 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
Classifications
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- C—CHEMISTRY; METALLURGY
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- C10M5/00—Solid or semi-solid compositions containing as the essential lubricating ingredient mineral lubricating oils or fatty oils and their use
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- C10M7/00—Solid or semi-solid compositions essentially based on lubricating components other than mineral lubricating oils or fatty oils and their use as lubricants; Use as lubricants of single solid or semi-solid substances
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- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
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- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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Description
(1) mindestens 65 Gewichtsprozent Ăthylen,
(2) mindestens 5 Gewichtsprozent Vinylester von gesÀttigten aliphatischen CarbonsÀuren, mit 1
bis 6 C-Atomen, Alkylacrylate, Alkylmethacry-Iate, Dialkylmaleate und Dialkylfumarate aliphatischer
Alkohole mit 1 bis 6 C-Atomen und
(3) 0,01 bis 3 Gewichtsprozent eines Monomeren aus AcrylsÀure, MethacrylsÀure, ItaconsÀure,
MaleinsÀure und FumarsÀure, aus dem Anhydrid der ItaconsÀure, der MaleinsÀure und der 1Q
FumarsÀure, aus Alkylhydrogen-maleaten und Alkylhydrogen-fumaraten, aus Monoacrylaten
und Monomethacrylaten von Glykolen, 2-Hydroxy-3-aminopropylalIylÀther,
AllylglycerinÀther, Divinylglykol, 2-DimethylaminoÀthyl- ?r
acrylat, 2-DimethyIaminoÀthyImethacrylat und
N-Vinylpyrrolidon umfaĂt.
2. Schmierfett nach Anspruch 1, dadurch gekennzeichnet,
daĂ das Terpolymer 20 bis 30 Gewichtsprozent der Komponente (2) und 0,1 bis 1 jo
Gewichtsprozent der Komponente (3) enthÀlt.
3. Schmierfett nach Anspruch 1 oder 2, dadurch gekennzeichnet, daĂ die Komponente (2) aus
Vinylacetat, Ăthylacrylat oder Methylmethacrylat besteht. 3r>
4. Schmierfett nach einem der AnsprĂŒche 1 bis 3, dadurch gekennzeichnet, daĂ die Komponente (3)
aus AcrylsÀure oder MethacrylsÀure besteht.
Die Erfindung betrifft ein Schmierfett auf der Basis eines SchmiermitteltrÀgers, eines Verdickungsmittels
und eines Ăthylencopolymeren als Verbesserungsmittel. v>
Es wurden bereits Ăthylen-Vinylacetat-Copolymere in Schmierfette einverleibt, um deren BestĂ€ndigkeit
gegen das Auswaschen mit Wasser zu verbessern. Bei bestimmten Schmierfetten jedoch hat sich der Gebrauch
solcher Copolymere als nicht zweckmĂ€Ăig erwiesen z. B. bei AnsĂ€tzen, deren Verdickung durch
Calcium-Blei-Komplexe bewirkt war, bei weichen keine
ausgeprĂ€gte BestĂ€ndigkeit gegen das Auswaschen mit Wasser festzustellen war. DarĂŒber hinaus wurde
ermittelt, daĂ solche Schmierfette wie auch andere ĂŒbliche Verdickungsmittel enthaltende Schmierfette
nicht nur eine geringe BestÀndigkeit gegen das Auswaschen mit Wasser aufweisen, sondern auch dazu
neigen, bei hoher Temperatur der Umgebung zu erweichen und auszusickern.
So werden weiterhin in der DE-AS 12 78 056 Schmierfette beschrieben, die neben einem Mineralöl,
einem Verdickungsmittel, und einer FettsÀuremetallseife ein Polyolefin wie ein öllösliches ataktisches
Polypropylen oder ein Ăthylen/Propylen-Copolymeres enthalten. Diese Schmierfette sollen eine Verringerung
der Wasserauswaschung zeigen. Es wird jedoch mit diesem bekannten Schmiermittel noch keine ausreichende
BestĂ€ndigkeit gegenĂŒber Hochtemperaiurerweichung und Aussickern er/ielt.
In der DE-AS 11 24 174 und der US-Patentschrift
30 83 103 sind Schmierfette beschrieben, die Metallseifer.
organischer SÀuren und eine kleine Menge eines öllöslichen Copolymeren, welches aus Estermonomeren
aufgebaut ist, enthalten. Die gemÀà diesen Literaturstellen als Verdickungsmittel dienenden Metallseifen
dĂŒrften sich bei höheren Temperaturen zersetzen.
Metallsalze von Copolymeren sind als Geiierungsmittel,
d.h. Verdickungsmittel, fĂŒr Schmierfette in den US-Patentschriften 26 98 298 und 26 98 299 und der
britischen Patentschrift 7 20 487 beschrieben. Die damit erhaltenen Fette weisen jedoch ebenfalls keine zufriedenstellende
WasserauswaschbestÀndigkeit und keine guten Hochtemperaturerweichungseigenschaften auf.
Die in der US-Patentschrift 30 06 942 und Chem. Abstract 1970, Bd. 73, Nr. 16 beschriebenen Schmierfette
sind aus Wachsen hergestellt und zeigen infolgedessen eine schlechte HochtemperaturstabilitÀt. Die US-Patentschrift
31 14 708 beschreibt Gemische aus Polymeren und Ălen, die in Form von trockenen Feststoffen
vorliegen, die gepulvert oder pelletisiert werden können. Die vorliegende Erfindung richtet sich demgegenĂŒber
auf Schmierfette.
SchlieĂlich beschreibt die US-Patentschrift 30 76 764 mit Poly(4-methyl-l-pentan) verdickte Schmierfette.
Auch diese bekannten Fettmassen besitzen nicht die erwĂŒnschte StabilitĂ€t gegenĂŒber Wasserauswaschcn
und gegenĂŒber Hochtemperaturerweichung.
Aufgabe der Erfindung ist somit die Schaffung von Schmierfetten, die ĂŒbliche Verdickungsmittel enthalten
und eine verbesserte Wasserauswaschbe.stÀndigkcil,
eine verbesserte HochtemperaturerweichungsbestÀndigkeit und eine verbesserte Aussickerungscigcnschaft
besitzen.
Zur Lösung dieser Aufgabe wird gemÀà der Erfindung ein Schmierfett auf der Basis eines SchmicrmitteltrÀgers,
eines Verdickungsmittels und eines Ăthylencopolymeren als Verbesserungsmittel geschaffen,
das dadurch gekennzeichnet ist, daĂ das copolymere Verbesserungsmittel aus einem Terpolymer mit einem
Schmelzindex von 0,5 bis 200 besteh t, das
(1) mindestens 65 Gewichtsprozent Ăthylen,
(2) mindestens 5 Gewichtsprozent Vinylester von gesÀttigten aliphatischen CarbonsÀuren, mit 1 bis 6
C-Atomen, Alkylacrylate, Alkylmethacrylate, Dialkylmaleate und Dialkylfumarate aliphatischer Alkohole
mit 1 bis 6 C-Atomen und
(3) 0,01 bis 3 Gewichtsprozent eines Monomeren aus AcrylsÀure, MethacrylsÀure, ItaconsÀure, MaleinsÀure
und FumarsÀure, aus dem Anhydrid der ItaconsÀure, der MaleinsÀure und der FumarsÀure,
aus Alkylhydrogen-maleaten und Alkylhydrogenfumaraten, aus Monoacrylaten und Monomethacrylaten
von Glykolen, 2-Hydroxy-3-aminopropylÀther, AHylglycerinÀther, Divinylglykr!, 2-DimethylaminoÀthylacrylat^-DimethylaminoÀthylmethacrylat
und N-Vinylpyrrolidon umfaĂt.
Die Herstellungen des als Verbesserungsmittel eingesetzten oben erwÀhnten Terpolymers sind in der
US-Patentschrift 32 15 657 ausfĂŒhrlich beschrieben.
Viele verschiedenartige Verdickungsmittel können fĂŒr die Schmierfette entsprechend der Erfindung
eingesetzt werden. Inbegriffen in diese Verdickungsmittel sind Alkali- und Erdalkaliseifen der Fette und
FettsĂ€uren mit etwa 12 bis 30 C-Atomen je MolekĂŒl.
Geeignete Metalle sind Natrium, Lithium, Calcium und Barium. Fettsubstanzen stellen dar: StearinsÀure,
HydroxysiearinsÀure, Stearin, Baumwollsamenölsiiure, ölsÀure, PalmitinsÀure, MyristinsÀure und gehÀrtete
Fischöle (hydrogenated fish oils). 1S
Andere Verdickungsmittel bestehen aus Komplexen von Salzen und Salz-Seifen wie Calciumstearat-acetat
(US-Patent 21 97 263); Bariumstearat-acetat (US-Patent 25 64 561); Calciumstearat-caprylat-acetat-Komplexe
(US-Patent 29 99 065); Calciumcaprylat-acetat (US-Patent 29 99 066); und Calciumsalze und -seifen von
SĂ€uren mit niederem, mit mittlerem und hohem Molekulargewicht und von NuĂölsĂ€uren; und Aluminiumkomplexe.
Eine andere Gruppe von Verdickungsmittel enthÀlt substituierte Harnstoffe, Phthalocyanine, Indanthrene,
Pigmente wie Perylimide, Pyromeilitdiimide, DiaminocyanursÀure
und RuĂ.
Als andere kolloidale Verdickungsmittel werden in den neuen SchmierfettansĂ€tzen im wesentlichen hydro-â phobe
Tone verwendet. Solche Verdickungsmittel 1 können aus Tonen hergestellt werden, welche ursprĂŒnglich
hydrophilen Charakter haben, jedoch vor dem Einsatz als Komponente eines Schmierfettansatzes
durch EinfĂŒhrung von langkettigen Kohlenwasserstoffradikalen
in die OberflÀche der Partikel des Tones in die hydrophobe Beschaffenheit umgewandelt worden sind.
Sie können z. B. einer vorbereitenden Behandlung durch ein organisches kationisches oberflÀchenaktives Mittel
wie einer Onium-Verbindung unterworfen werden, so Geeignete Onium-Verbindungen sind Tetra-alkyl-ammonium-chloride
wie Dimethyldioctadecylammoniumchlorid, Dimethyldibenzylarnmoniumchlorid und Mischungen
davon. FĂŒr diese dem Fachmann wohlbekannte Methode der Umwandlung bedarf es wohl keiner J5
weiteren ErlÀuterung und sie stellt auch nicht etwa einen Teil der Erfindung dar. Kurz gesagt: die Tone,
welche als Ausgangsm.iterial zur Bildung von Verdikkungsmitteln
zum Gebrauch in SchmierfetiansĂ€izen gebraucht werden, können natĂŒrlich 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
natĂŒrlichen Fundstelle zur anderen weitgehend schwanken. Diese Tone können als anorganische komplexe
Silicate bezeichnet werden wie Aluminiumsilicat, Magnetsiumsilicat, Bariumsilicat und Àhnliche, die
zusÀtzlich zu ihrem Silicatgitter wechselnde Mengen kationisch austauschbarer Gruppen wie z. B. Natrium
enthalten.
Inbegriffen in diese hydrophilen Tone, die fĂŒr die Umwandlung in die gewĂŒnschten Verdickungsmittel
besonders geeignet sind, zeigen sich Monimorillonite wie Bentonit, Attapulgit, Hektorit, Illit, Saponit, Sepiolit,
Biotit, Vermiculit, Zeolith-Tone und Àhnliche.
Bevorzugte Verdickungsmittel sind Calcium-Bleiacetat-Komplext,
wie sie in SchmierfettansÀtzen gebraucht und im US-Patent 28 98 297 beschrieben sind. Solche
Verdickungsmittel umfassen eine Mischung von (A) Erdalkalimetallseifen und deren Salzen, wobei das aus
der Gruppe der Erdalkalien ausgewÀhlte Metall aus Calcium besteht, und einer Mischung (B) von Calcium
und Barium, wobei das chemisch gebundene Ăquivalentgewichi von Barii'm nicht mehr als etwa 15% in dieser
Mischung aufmacht, gerechnet gegen Calcium bei diesen Seifen und Salzen. Dabei ist die Mischung A
dieser Seifen und Salze in der eine Schmierfett bildenden Menge vorhanden. Die Metallsalze der
Mischung A sind Salze einer niedermolekularen, unsubstituierten, gesÀttigten MonocarboxylsÀure (1) mit
1 bis 6 C-Atomen je MolekĂŒl. Die Metallseifen der Mischung A sind Seifen verschiedener SĂ€uren mit der
SĂ€ure I, wie aus der folgenden Tabelle ersichtlich:
SĂ€ure
Zahl der C-Atome Gewichtsprozent
der Gesamt-SĂ€uren
der Gesamt-SĂ€uren
(I) mit niederem Molekulargewicht
(II) mit mittl. Molekulargewicht
(III) mit hohem Molekulargewicht
(IV) Ălsiiuren
1 bis 6 10 bis 50
7 bis 12 5 bis 50
wenigstens 13 5 bis 40
wenigstens 13 5 bis 40
8 bis 18 25 bis 60
SÀure II ist ausgewÀhlt aus unsubstituierten, monohydroxysubstituierten
und methylsubstituierten gesÀttigten aliphatischen MonocarbonsÀuren. SÀure III ist
ausgewÀhlt aus unsubstituierten und monohydroxysubstituierten
gesÀttigten aliphatischen MonocarbonsÀuren und monoungesÀttigten aliphatischen MonocarbonsÀuren.
Die ölsĂ€uren sind NuĂölsĂ€uren, weiche Mischungen von SĂ€uren umfassen, die von 8 bis 18 C-Atomen je
MolekĂŒl und vorzugsweise C12- bis Cu-SĂ€uren enthalten,
auĂerdem mindestens 0,5 bis zu 5 Gewichtsprozent (ausgedrĂŒckt in PbO) einer Bleiverbindung mit mindestens
einer der SĂ€uren I bis IV.
Bei den Schmierfetten der Erfindung können Mineralöle oder auch synthetische Ăle mit SchmierviskositĂ€t
Anwendung finden. Brauchbare Mineralöle sind solche mit einer ViskositÀt (SUS) von mindestens 40 see
bei 37,80C(IOO0F) und besonders solche im Bereich von
etwa 60 bis etwa 6000 see bei 37,80C.
Synthetische TrÀger anstelle von Mineralöl oder in Verbindung damit sind anwendbar. Geeignete synthetische
TrÀger sind: Polypropylen, Polypropylenglykol, Trimethylolpropanester, Neopentyl- und Pentaerythrit-Ester,
Di-(2-Ă€thyIhexyl)-sebacat, Di- (2-Ă€thyI-hexyI)-adipat,
Dibutylphthalat, PolyÀthylenglykol, Di-2-ÀthyIhexoat,
FIuor-Kohlenstoffverbindungen, PerfluoroalkylpolyÀther,
Ester der KieselsĂ€ure, Silane, Ester phosphorhaltiger SĂ€uren, flĂŒssige Harnstoffe, Ferrocene-Derivate,
gehÀrtete Mineralöle Polyphenyle des Kettentyps Siloxane, weiterhin Silicone (Polysiloxane) Fluorsilicone,
Alkyl-substituierte DiphenylÀther z. B. Butyl-substituierte
Bis-(p-phenoxyphenyl)Àther und PhenoxyphenylÀther.
Andere Kohlenwasserstofföle schlieĂen auch synthetische Kohlenwasserstoffpolymere ein, welche verbesserte
ViskositÀtsindices aufweisen. Sie werden hergestellt durch Polymerisation eines Olefins oder einer
Mischung von Olefinen mit 5 bis 18 C-Atomen im MulekĂŒl in Gegenwart von aliphatischen Halogeniden
und einem Katalysator vom Zieglertyp.
Es ist jedoch klar, duĂ die dabei "in Betracht
gezogenen Mischungen auch andere charakteristische Materialien enthalten können. Es können z. B. Antioxidantien
wie Phenyl-ft-naphtylarrin (PAN), Korrosionsinhibitoren,
Mittel fĂŒr e-<trem hohe Drucke, ViskositĂ€isindexmittel,
und FĂŒllstoffe Verwendung finden. Unter diesen Materialien befinden sich kolloidale KieselsĂ€ure.
Calciumaceta!, CalciumcarUonat und MolybdÀndisulfid.
Derartige charakteristische Materialien beeintrÀchtigen nicht den Schn;ierwert der Zusammensetzung der
Erfindung noch beeintrĂ€chtigen sie ĂŒb nĂŒtzlichen Eigenschaften der Terpolymere; vieimeh;· sind diese
charakteristischen Maierialien dazu dienlich, den einzelnen Zusammensetzungen, in die sie einverleibt
werden, ihre ĂŒblichen Eigenschaften zu verleihen.
Die Schmierfette der Erfindung können in Ăbereinstimmung mit den herkömmlichen Fertifungsnietboden
wie jede beliebige Mischmerhode, wodurch feste Partikel mit einer FlĂŒssigkeit benetzt werden, hergestellt
werden. Geeignete Einrichtungen fĂŒr diesen Zweck stellen KolloidmĂŒhlen, 3-WalzĂni'arbmĂŒhlen und
die Manton-GauĂŒn Homogenisiermaschine und Ă€hnliche dar.
In bezug auf das TerpolymerverbesserungsmitteÀ der
Erfindung enthalten bevorzugte Terpolymere 20 bis 30 Gewichtsprozent der vorerwÀhnten Komponente der
'Gruppe 2 und zwar der zweiten Àthylenisch ungesÀttigten monomeren Komponente; und 0,1 bis 1 Gewichtsprozent
der vorerwÀhnten Komponente, der Gruppe 3 und zwar der dritten Àthylenisch ungesÀttigten monomeren
Komponente. MaĂgebende bevorzugte Terpolymere enthalten auĂer Ăthylen 20 bis 30 Gewichtsprozent
Vinylacetat und 0,1 bis 1 Gewichtsprozent AcrylsÀure; 20 bis 30 Gewichtsprozent Vinylacetat und
.0,1 bis 1 Gewichtsprozent MethacrylsĂ€ure, 20 bis 30 ^Gewichtsprozent Ăthylacrylat und 0,1 bis 1 Gewichtsprozent
AcrylsĂ€ure; 20 bis ?0 Gewichtsprozent Ăthylacrylat und 0,1 bis 1 Gewichtsprozent MethacrylsĂ€ure;
20 bis 30 Gewichtsprozent Methylmethacrylat und 0,1 bis 1 Gewichtsprozent AcrylsÀure; und 20 bis 30
!Gewichtsprozent Methylrnethacryiat und 0,1 bis 1 Gewichtsprozent MethacrylsÀure (wobei die Zahlenangaben
nur NĂ€herungswerte sind).
Was die Menge der TerpoJyraerverbesserungsmittel
betrifft, wird letzteres, wie vors'ehend beschrieben, in geringer Menge verwendet, welche ausreicht, dem
Schmierfettansatz die gewĂŒnschte WiderstandsfĂ€hig-
IU
20 keil gegen das Auswaschen durch Wasser und dun
Widerstand gegen das Erweichen bei holicn Temperaluren
zu verleihen. Besonders bevorzugt sind Schnverfei
te, in welchen das Terpolymer in einer Höhe vun mindestens etwa 0,01 Gewichtsprozent vorhanden ist.
FĂŒr die meisten Zwecke erbringt die Anwendung dts
Terpolymers in einer Höhe von etwa 0,1 bis etwa 5 Gewichtsprozent eine höchst zufriedenstellende Verbesserung
der Schmierfellzusammensetzungen.
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-Verbindungcn hergestellt. Es enthielt in
Gewichtsteilen ausgedrĂŒckt 16% Verdickungsmittel. 80% TrĂ€ger und 4% Additive.
Das Verdickungsmittel wurde gebildet durch Reaktion eines geringen stöchiometrischen Ăberschusses
von Metallbase, bestehend aus 4,5 Teilen Kalk zu 1 Teil BleiglÀtte mit FettsÀuren, bestehend aus 4,5 Teilen Kalk
zu 1 Teil BleiglÀtte mit FettsÀuren, bestehend aus 27,5 Gewir^'sprozent einer niedermolekularen SÀure, nÀmlich
EssigsÀure, 58 Gewichtsprozent einer SÀure von mittlerem Molekulargewicht, nÀmlich CaprylsÀure, und
14,5 Gewichtsprozent SÀuren mit hohem Molekulargewicht, KokusfettsÀurenJCubisCiB). Der TrÀger bestand
aus einem naphthenischen, durch Lösungsmittel gereinigten Mineralöl, mit einer ViskositÀt von 800 SUS bei
37,8°C bzw. 70 SUS bei 1000C. Die Additive enthielten 2
Gewichtsprozent eines chlorierten Wachses als Hochdruckmitte!, 0,8 Gewichtsprozent eines Antioxidanten,
nÀrr.lich blockiertes Phenol und aromatisches Amin, und
1,2 Gewichtsprozent eines Korrosionsinhibitors.
Wie in den Beispielen der folgenden Tabelle I gezeigt ist, wurden unterschiedliche Mengen eines typischen
Terpolymers, wie es die Erfindung darstellt, in die oben hergestellten Schmierfette zur Auswertung gebracht.
Dieses Terpolymer stellt ein Ăthylen-Vinylacetat-MethacrylsĂ€ure-Terpolymer
dar, hat einen Schmelzindex von 13 und enthÀlt 27,5 Gewichtsprozent Vinylacetat,
0,7 Gewichtsprozent MethacrylsĂ€ure und 71,8 Gewichtsprozent Ăthylen.
Die betreffenden SchmierfettansĂ€tze, die die genannten Mengen des oben hergestellten Terpolymers gewichtsmĂ€Ăig erhalten, wurden dem Standard-Wasserauswaschtest unterzogen (ASTM D 1264) unter Anwendung eines breiteren ringförmigen Schildes, um den Durchschnitt des Wassers in das mit Schmierfett
Die betreffenden SchmierfettansĂ€tze, die die genannten Mengen des oben hergestellten Terpolymers gewichtsmĂ€Ăig erhalten, wurden dem Standard-Wasserauswaschtest unterzogen (ASTM D 1264) unter Anwendung eines breiteren ringförmigen Schildes, um den Durchschnitt des Wassers in das mit Schmierfett
5» bestrichene Lauflager zu erleichtern.
31)
35
EinfluĂ von Terpolymer auf den Widerstand gegen Auswaschen
Beispiel Schmierfett
Konsistenz
ASTM D 217
(UW/60W)*)
ASTM D 217
(UW/60W)*)
Wasserauswascritesl
ASTM D 1264
(% Auswaschung)**)
1 Ausgangs-Schmierfett 312/328 25
2 Ausgangs-Schmierfett + 0,3% Terpolymer 298/318 13
3 Ausgangs-Schmierfett + 0,5% Terpolymer 272/272 7
4 Ausgangs-Schmierfett + 1,0% Terpolymer 218/255 4
*) UW/60W = Unbearbeitet/mit 60 Schlagen bearbeitet.
**) Unter Anwendung eines breiteren ringförmigen Schilds.
Aus den Beispielen der vorhergehenden Tabelle I wird offenbar, daĂ die Terpolymere der Erfindung eine
starke Wirksamkeit besitzen, um den SchmierfettansÀtzen gegen das Auswaschen durch Wasser Widerstandskraft
zu verleihen.
Wie anhand der Beispiele der folgenden Tabelle II
gezeigt ist, wurden unterschiedliche Mengen des oben beschriebenen, reprÀsentativen Terpolymers in das
oben beschriebene Schmierfett zur Auswertung im Hinblick auf den Widerstand gegen Erweichungswirkung
bei erhöhten Temperaturen eingearbeitet.
EinfluĂ des Terpolymers auf die Erweichungswirkung
Beispiel Stoff
Konsistenz ASTM D (UW/60W) Erweichungswirkung %
(Grade in Celsius)
(Grade in Celsius)
65,6° 93,3° 121,1°
160°
Radlagerschwundtest ASTM D 126
(126,7°C 130 g)
modifiziert
Schwund in g
(126,7°C 130 g)
modifiziert
Schwund in g
1 Ausgangs-Schmierfett 301/318 21
2 Ausgangs-Schmierfett + 0,3% 256/286 13 Terpolymer
ĂŒber 50**) ĂŒber 50**) 12,1
33 . 40 4,6
33 . 40 4,6
*) UW/60W = Unbearbeitet/mit 60 Schlagen bearbeitet.
**) Zu weich, als daà die Penetration hatte gemessen werden können.
Aus den Beispielen der vorgehenden Tabelle II geht hervor, daĂ die Terpolymere der Erfindung eine starke Wirksamkeit
besitzen, um den Schmierfetten Widerstafidskraft gegen das Erweichen bei erhöhten Temperaturen zu
verleihen.
230217/82
Claims (1)
1. Schmierfett auf der Basis eines SchmiermitteltrĂ€gers, eines Verdickungsmittel und eines Ăthylen- r>
copolymeren als Verbesserungsmittel, dadurch
gekennzeichnet, daĂ das Copolymer-Verbesserungsmittel aus einem Terpolymer mit einem
Schmelzindex von 0,5 bis 200 besteht, das
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7484970A | 1970-09-23 | 1970-09-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2143848A1 DE2143848A1 (de) | 1972-03-30 |
DE2143848B2 DE2143848B2 (de) | 1981-07-23 |
DE2143848C3 true DE2143848C3 (de) | 1982-04-29 |
Family
ID=22122040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2143848A Expired DE2143848C3 (de) | 1970-09-23 | 1971-09-01 | Schmierfett |
Country Status (6)
Country | Link |
---|---|
US (1) | US3705853A (de) |
JP (1) | JPS5521079B1 (de) |
CA (1) | CA948616A (de) |
DE (1) | DE2143848C3 (de) |
FR (1) | FR2107892B1 (de) |
GB (1) | GB1306349A (de) |
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FR2205570B1 (de) * | 1972-11-07 | 1976-06-04 | Mobil Oil France | |
US3997455A (en) * | 1974-07-01 | 1976-12-14 | Mobil Oil Corporation | Paraffinic base greases |
US3904534A (en) * | 1974-07-01 | 1975-09-09 | Mobil Oil Corp | Grease manufacture |
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 | 性éèæ„æ ȘćŒäŒç€Ÿ | æ”ć槜æ”ćșæ°ŽăźèžçșæŁćŠçèŁ çœź |
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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US2698298A (en) * | 1951-03-15 | 1954-12-28 | Socony Vacuum Oil Co Inc | Lubricating greases containing an acidic copolymer salt |
US2698299A (en) * | 1951-11-27 | 1954-12-28 | Socony Vacuum Oil Co Inc | Modified acidic copolymer-fatty acid soap greases |
FR1226563A (fr) * | 1959-02-20 | 1960-07-13 | Exxon Standard Sa | Graisses améliorées |
US3086942A (en) * | 1960-02-01 | 1963-04-23 | Exxon Research Engineering Co | Lubricants containing various crosslinked substances as thickening agents |
US3076764A (en) * | 1960-09-30 | 1963-02-05 | California Research Corp | Isotactic polymers of 4-methyl-1-pentene as grease thickeners |
US3114708A (en) * | 1960-12-29 | 1963-12-17 | Exxon Research Engineering Co | Dry polyolefin/oil blends |
US3290244A (en) * | 1963-07-11 | 1966-12-06 | Sun Oil Co | Grease compositions containing atactic polypropylene |
-
1970
- 1970-09-23 US US74849A patent/US3705853A/en not_active Expired - Lifetime
-
1971
- 1971-04-27 GB GB1164071*[A patent/GB1306349A/en not_active Expired
- 1971-06-11 CA CA115,424A patent/CA948616A/en not_active Expired
- 1971-07-22 JP JP5425671A patent/JPS5521079B1/ja active Pending
- 1971-09-01 DE DE2143848A patent/DE2143848C3/de not_active Expired
- 1971-09-21 FR FR7133946A patent/FR2107892B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1306349A (de) | 1973-02-07 |
FR2107892A1 (de) | 1972-05-12 |
DE2143848A1 (de) | 1972-03-30 |
FR2107892B1 (de) | 1976-03-26 |
AU3332971A (en) | 1973-03-29 |
US3705853A (en) | 1972-12-12 |
DE2143848B2 (de) | 1981-07-23 |
JPS5521079B1 (de) | 1980-06-06 |
CA948616A (en) | 1974-06-04 |
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Free format text: KOHLER, M., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN |