DE4229383A1 - Genießbares Schmiermittel mit Zusatz von schmierwirkungsverbessernden Estern aus Fettsäuren und höheren Alkoholen - Google Patents
Genießbares Schmiermittel mit Zusatz von schmierwirkungsverbessernden Estern aus Fettsäuren und höheren AlkoholenInfo
- Publication number
- DE4229383A1 DE4229383A1 DE4229383A DE4229383A DE4229383A1 DE 4229383 A1 DE4229383 A1 DE 4229383A1 DE 4229383 A DE4229383 A DE 4229383A DE 4229383 A DE4229383 A DE 4229383A DE 4229383 A1 DE4229383 A1 DE 4229383A1
- Authority
- DE
- Germany
- Prior art keywords
- lubricant
- edible
- additives
- esters
- antioxidant
- 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.)
- Granted
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- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
- C10M101/02—Petroleum fractions
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
- C10M107/08—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing butene
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- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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Description
Die Erfindung betrifft ein eßbares Schmiermittel, das vor
allem in Hochdruckkompressoren verwendet werden kann.
Als "eßbar" oder "genießbar" bezeichnete, also praktisch
ungiftige Schmiermittel benötigt man bekanntlich zur
Schmierung von Maschinenteilen, wenn Anteile - meist nur
Spuren - des Schmiermittels mittelbar oder unmittelbar in
Nahrungs-, Genuß- und Lebensmittel gelangen können.
Sie sind aber auch im Hinblick auf die geringere Schädlichkeit
für die Umwelt von Vorteil, verglichen mit herkömmlichen,
manchmal giftige Substanzen enthaltenden Schmiermitteln.
Eßbare Substanzen sind entweder
- a) ungiftig und verdaulich, wie beispielsweise pflanzliche und tierische Fette und Öle oder
- b) ungiftig, weil unlöslich und chemisch inert, wie beispielsweise Paraffinum-liquidum, das unverdaut ausgeschieden wird.
Das erfindungsgemäße Schmiermittel ist ein Gemisch bestehend
zum Großteil aus der Gruppe b) in Form der Basis-Schmier
mittelmischung sowie aus den eßbaren Stoffen der Gruppe a)
in Form von Additiven.
Es eignet sich insbesondere für Hochdruckkompressoren, die zur
Herstellung von Polyolefinen (Hochdruck-Polyäthylen und -Polypropylen)
aus den entsprechenden monomeren Gasen dienen, wobei diese
Kompressoren Drücke von 1500 bis vornehmlich 3500 bar
erzeugen. Die aus dem solcherart produzierten Hochdruck-Poly
äthylen oder -Polypropylen hergestellten Folien werden auch
zur Verpackung von Lebensmitteln verwendet. Die darin
enthaltenen Spuren von Schmiermitteln können zum Teil in die
damit in Berührung kommenden Lebensmittel gelangen und müssen
daher genießbar sein.
Schmiermittel dieser Art und für diesen Zweck sind bekannt. In
der DE-PS 21 37 590 wird ein solches Schmiermittel beschrieben,
das aus einem weißen Mineralöl und 5 bis 50%, vorzugsweise
20 bis 40% eines Polybutens und 0,1 bis 1,0%, vorzugsweise 0,1
bis 0,5% einer Fettsäure mit 16 bis 18 Kohlenstoffatomen und/oder
einem niederen Alkylester einer derartigen Fettsäure,
sowie 0,01 bis 2% eines Antioxidationsmittels (eines o-tert.
Alkyl-substituierten Phenols) besteht. Die Fettsäuren oder
deren niedere Alkylester, die als Additive zur Erhöhung der
Schmierfähigkeit des Schmiermittels lt. DE-PS 21 37 590
verwendet werden, bestehen aus gesättigten oder ungesättigten
aliphatischen Monocarbonfettsäuren mit 8 bis 22 Kohlen
stoffatomen sowie aus mehreren niederen Alkylestern, wobei die
Alkylester bis zu ungefähr 5 Kohlenstoffatome enthalten, z. B.
Methyloleat, n-Butylstearat oder dergleichen.
Das erfindungsgemäße Schmiermittel, vor allem in bezug auf
die Additive, ist neu und unterscheidet sich wesentlich von
der erwähnten DE-PS 21 37 590.
Die Art und die mengemäßigen Anteile der Additive sind von
ausschlaggebender Bedeutung für die Qualität des Schmier
mittels. Geringe Abweichungen von der Rezeptur können bereits
zu starker Qualitätsverminderung führen. Aus diesem Grund
kommt dem erfindungsgemäßen Schmiermittel eine große
Erfindungshöhe zu, zumal eine ungeheure Anzahl von unter
schiedlichen Additiven jeweils in zahlreichen Kombinationen,
Mischungsverhältnissen und Konzentrationen untersucht werden
muß.
Das erfindungsgemäße Schmiermittel unterscheidet sich
wesentlich von der DE-PS 21 37 590 dadurch, daß es keine freien
Fettsäuren enthält, die bekanntlich zu Korrosion führen
(können); weiters enthält es keine niederen Alkylfettsäure
ester. Ferner besteht es nicht aus ungesättigten Fettsäuren
oder deren niederen Alkylfettsäureestern, wie z. B. Ölsäure,
Linolsäure, Linolensäure, deren chemische und thermische
Stabilität sich als nicht optimal erweist.
Das erfindungsgemäße Schmiermittel enthält vielmehr - als
Additive zur Verbesserung der Schmierwirkung - nur gesättigte
Fettsäurederivate, in denen erstens keine freie Säuregruppe
(Carboxylgruppe, COOH) und zweitens keine "ungeschützte" Zwei- oder
Mehrfachbindung vorkommt; außerdem handelt es sich beim
erfindungsgemäßen Schmiermittel nicht um Ester einwertiger
Alkohole, sondern ausnahmslos um solche von höheren eßbaren
Alkoholen. Zu letzteren gehören z. B.
Propylenglykol (2 alkoholische Hydroxylgruppen),
Glycerin (3 alkoholische Hydroxylgruppen),
Erythrit (4 alkoholische Hydroxylgruppen, 4 C-Atome),
Pentaerythrit (4 alkoholische Hydroxylgruppen, 5 C-Atome),
Hexite (6 alkoholische Hydroxylgruppen),
Mannit, Sorbit, Arabit.
Propylenglykol (2 alkoholische Hydroxylgruppen),
Glycerin (3 alkoholische Hydroxylgruppen),
Erythrit (4 alkoholische Hydroxylgruppen, 4 C-Atome),
Pentaerythrit (4 alkoholische Hydroxylgruppen, 5 C-Atome),
Hexite (6 alkoholische Hydroxylgruppen),
Mannit, Sorbit, Arabit.
Als Ausnahme gilt hier das Rizinusöl, ein Triglycerid, das die
Ricinolsäure enthält, eine Hydroxy-Ölsäure; diese besitzt
nicht die leichte Oxidierbarkeit und Neigung zur thermischen
Instabilität der Ölsäure, weil sie durch ihre Hydroxylgruppe
"geschützt", (abgeschirmt) wird. Ricinusöl ist chemisch
und thermisch sehr stabil, im Gegensatz zu Ölsäure und deren
Estern.
Selbstverständlich ist die chemische und thermische Stabilität
der Additive von ausschlaggebender Bedeutung für die Qualität
des Schmiermittels.
Das erfindungsgemäße Schmiermittel enthält vorzugsweise mehr
als ein Additiv in Form von eßbaren Estern, insbesondere
mindestens je ein Additiv in Form eines Esters von gesättigten
Fettsäuren mit einem 2-, einem 3-, einem 4-, und einem
6-wertigen Alkohol, wobei Ricinusöl vorzugsweise jeweils eine
Komponente darstellt.
Der Gehalt an schmierwirkungsverbesserten Additiven beträgt
in Summe zwischen 0,1 bis 3,0 Gewichtsprozent bezogen auf das
fertige Schmiermittel.
Die Fettsäuren des Ricinusöls setzen sich wie folgt zusammen:
87 bis 91% Ricinolsäure, 2% Stearin- und Palmitinsäure, 1 bis
2% Dihydroxystearinsäure, aber auch aus 2 bis 3% Ölsäure und 3
bis 5% Linolsäure. Da die beiden letzteren Bestandteile
ungesättigte Fettsäuren sind, ist - neben der schützenden
Wirkung der Hydroxylgruppe - der Zusatz von Antioxidations
mittel(n) zum Schmiermittel vorgesehen. Hydriertes Ricinusöl
ist ein bei 84 bis 86°C schmelzendes Hartfett mit wachsähn
lichen Eigenschaften; auch in dieser Form ist es ein Additiv
zur Verbesserung der Schmierwirkung des erfindungsgemäßen
Schmiermittels.
Die Additive lösen sich in der mineralischen Schmierölbasis
besser, wenn die Mischung erwärmt wird, vor allem über den
Schmelzpunkt des Additives mit dem höchsten Schmelzpunkt. Eine
praktische Begrenzung für die Anwendung der erfindungsgemäßen
Additive ist ein zu hoher Schmelzpunkt, weil die Erwärmung und
das Warmhalten der Schmierölmischung bei Temperaturen über
beispielsweise 100°C umständlich und ungünstig ist.
Als Beispiel für eine Rezeptur nur für die Additive zur
Schmierwirkungsverbesserung wird eine aus 5 verschiedenen
derartigen Additiven bestehende Mischung angegeben:
Das Basis-Schmierölgemisch besteht jeweils aus etwa 40 bis 60%
Weißöl und etwa 60 bis 40% Polybuten und/oder Polyisobuten.
Als eßbares Antioxidationsmittel (Alterungsschutzmittel)
enthält das erfindungsgemäße Schmiermittel 0,05 bis 0,1% einer
Pentaerythritverbindung, oder 0,05 bis 0,1% einer Anisol-
Verbindung oder 0,05 bis 0,1% einer Mischung aus beiden
Verbindungen im Verhältnis von ungefähr 1 : 1, vorzugsweise
verstärkt durch 0,01 bis 0,1% einer organischen Phosphit-
Verbindung.
Die Vorteile des erfindungsgemäßen Schmiermittels mit den
Additiven auf Esterbasis sind wie folgt:
- 1. optimale thermische und chemische Stabilität sowie Schmier wirkungsverbesserung und Abriebverminderung durch die Aus wahl eßbarer gesättigter Fettsäuren für den Säureteil der Ester;
- 2. desgleichen durch die Auswahl eßbarer höherer Alkohole mit 2 bis 6 Alkoholgruppen (Hydroxylgruppen) für den Alkoholteil der Ester.
- 3. optimale Abdeckung möglichst vieler und großer Bereiche der Temperatur, des Druckes, der Verweilzeit, der mechanischen Parameter (relative Geschwindigkeit der bewegten zu schmierenden Teile; deren Werkstoffzusammensetzung, Reibungskoeffizienten u. a.) durch vorzugsweise mehrere - mindestens aber zwei - Komponenten, wobei vorzugsweise Ricinusöl oder hydriertes Ricinusöl jeweils eine Komponente sein soll.
- 4. Der Gehalt an Schmiermitteladditiven beträgt in Summe 0,1 bis 3,0 Gewichtsprozent, unabhängig von der Anzahl der Komponenten, so daß sich im wesentlichen keine Verteuerung des Schmiermittels mit zunehmender Anzahl der Komponenten ergibt.
- 5. Gewünschte physikalische und chemische Eigenschaften wie beispielsweise niedriger Schmelz- (Erstarrungs-, Stock-) Punkt, hoher Siede- und Zündpunkt, niedriger Dampfdruck u. a. des Schmiermittels können durch entsprechende gezielte Auswahl der Ester als Additive erhalten werden; mehrwertige Alkohole gestatten Esterbildung mit 1 bis 2, 6-wertige Alkohole mit bis zu 6 Alkoholgruppen, wobei freie, nichtveresterte Alkoholgruppen bestimmte gewünschte Eigenschaften ergeben, z. B. niedrigen Schmelzpunkt, gute Löslichkeit in der Schmiermittelbasis, hohe Viskosität bei erhöhten Temperaturen, u. a.
- 6. Freie Säuren, die sich u. U. als Abbauprodukte (spurenweise) bilden, z. B. infolge der Oxidation einer alkoholischen Hydroxylgruppe, können mit anderen freien Alkoholgruppen zur Bildung neutral reagierender eßbarer Ester führen; diese Esterbildung wird dadurch gefördert, daß das ent stehende Reaktionswasser bei der herrschenden hohen Temperatur durch Verdunstung oder Verdampfung aus dem Schmiermittel entweicht und daher das chemische Gleich gewicht zugunsten der Esterbildung verschoben wird (Gleichgewichtskonstante, Massenwirkungsgesetz). Freie, nicht veresterte alkoholische Hydroxylgruppen können daher durch Säureabbindung einen Alterungsschutz des Schmier mittels bewirken.
- 7. Die chemisch sehr stabilen Ester der höheren gesättigten Fettsäuren unterliegen bei höherer Temperatur und längerer Verweilzeit einer teilweisen Oxidation, wobei ein β-Abbau eintritt, so daß das jeweilige Oxidationsprodukt stets die nächstniedrige Fettsäure ist; so entsteht z. B. aus dem Stearat das - ebenfalls schmierwirksame - Palmitat, usw. Die Fettsäureester besitzen daher die Wirkung eines "inne wohnenden, eingebauten" Alterungsschutzes und wirken somit ähnlich wie ein Antioxidationsmittel.
- 8. Dadurch, daß die erfindungsgemäßen Schmiermitteladditive freie Alkoholgruppen im Ester enthalten können, erspart man sich die Zumischung von Alkoholen, z. B. von Fettalkoholen, die nicht immer die gewünschten Eigenschaften ergeben und die manchmal nicht eßbar sind.
- 9. Gegenüber dem an sich bekannten alternativen Weg, aus mehr wertigen Säuren, z. B. Adipinsäure oder Fruchtsäuren Ester zu bilden, haben die erfindungsgemäßen Schmiermitteladdi tive den Vorteil, bei Teilveresterung neutrale Alkohol gruppen aufzuweisen, während sich bei Teilveresterung mehrwertiger Säuren freie Säuregruppen ergeben, die wegen Korrosionsgefahr unerwünscht sind.
Das Schmiermittel enthält außerdem einen Metallinhibitor
(Metallabbinder), einen Desaktivator, 0,005 bis 0,5 Gew.-% der
fertigen Schmiermittelmischung, in Form eines Succinimid-Deri
vates oder eines Aminosäure-Derivates, z. B. N-Acyl-Sarkosan.
Als zweites Beispiel - diesmal für eine Mischung aus nur zwei
schmierwirksamen Additiven - ist die folgende Rezeptur angege
ben:
Gegebenenfalls enthält das Schmiermittel zusätzlich einen
höheren eßbaren Alkohol als Lösungsmittel und/oder
Lösungsvermittler für die Additive.
Zur Lösung der gestellten Aufgabe dienen erfindungsgemäß die
Merkmale der Patentansprüche.
Claims (7)
1. Genießbares, insbesondere für Hochdruckkompressoren
einsetzbares Hochdruckschmiermittel, zusammengesetzt aus
einem Basisschmiermittel, das aus 40 bis 60% Polybuten
und/oder Polyisobuten und 60 bis 40% Weißöl einerseits, und
andererseits aus mindestens zwei Additiven besteht, die die
Schmierwirkung verbessern, sowie aus mindestens einem
Antioxidationsmittel und mindestens einem metallabbindenden
Desaktivator besteht, dadurch gekenn
zeichnet, daß die Additive zur Verbesserung der
Schmierwirkung aus mindestens zwei Estern von genießbaren
Alkoholen mit mindestens zwei Alkoholgruppen bestehen, die
jeweils mit mindestens einer höheren gesättigten Fettsäure
verestert sind, wobei die Summe der Gehalte an Additiven
mit Schmierwirkungsverbesserung 0,1 bis 3,0 Gewichtsprozent
beträgt, bezogen auf das fertige Schmiermittel.
2. Schmiermittel nach Anspruch 1, dadurch gekenn
zeichnet, daß mindestens ein Additiv zur Schmier
mittelverbesserung aus einem derartigen Ester mit minde
stens einer freien Alkoholgruppe (Hydroxylgruppe) besteht.
3. Schmiermittel nach den Ansprüchen 1 und 2, dadurch
gekennzeichnet, daß die genießbaren Fettsäure
teile in den derartigen Estern gesättigt sind und zusätz
lich auch das ungesättigte Ricinusöl, das Triglycerid der
Ricinolsäure und der ungesättigten Hydroxyölsäure als
derartiges Additiv verwendet werden kann.
4. Schmiermittel nach den Ansprüchen 1 bis 3, dadurch
gekennzeichnet, daß die genießbaren Alkohole
der derartigen schmierwirkungsverbessernden genießbaren
Ester vorzugsweise Propylenglykol, Glycerin, Erythrit,
Pentaerythrit, Arabit und die Hexite (Mannit, Sorbit) sowie
deren genießbare Alkoholderivate sind.
5. Schmiermittel nach Anspruch 1, dadurch
gekennzeichnet, daß es 0,05 bis 2,0 Gewichts
prozent - bezogen auf die fertige Schmiermittelmischung -
mindestens eines an sich bekannten Antioxidationsmittels
enthält, bestehend aus einem genießbaren Anisolderivat und/oder
einem genießbaren Pentaerythrit-Fettsäureesterderivat
mit einer radikal abbindbaren Amin- und Hydroxylgruppe und/oder
0,01 bis 1,0 Gewichtsprozent einer organischen
Phosphitverbindung.
6. Schmiermittel nach Anspruch 1, dadurch
gekennzeichnet, daß es als Additiv 0,005 bis 0,5%,
bezogen auf die fertige Schmiermittelmischung, mindestens
eines an sich bekannten, für Nahrungsmittel-Kontaktierung
zulässigen Desaktivators (Metallspurenabbinders) enthält,
insbesondere in Form eines Succinimid-Derivates oder eines
Aminosäure-Derivates, vorzugsweise N-Acyl-Sarkosan.
7. Schmiermittel nach den Ansprüchen 1 bis 6, dadurch
gekennzeichnet, daß es gegebenenfalls als
zusätzliches Additiv mindestens einen an sich bekannten,
genießbaren thermisch und chemisch stabilen höheren ein- oder
mehrwertigen Alkohol als Lösungsvermittler für die
Additive enthält.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0173590A AT396477B (de) | 1990-08-23 | 1990-08-23 | Geniessbares schmiermittel mit zusatz von schmierwirkungsverbessernden estern aus fettsäuren und höheren alkoholen |
CS922719A CZ271992A3 (en) | 1990-08-23 | 1992-08-31 | Edible high-pressure lubricant, usable particularly for high-pressure compressors |
DE4229383A DE4229383C2 (de) | 1990-08-23 | 1992-09-03 | Genießbares Schmiermittel mit Zusatz von schmierwirkungsverbessernden Estern aus Fettsäuren und höheren Alkoholen |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0173590A AT396477B (de) | 1990-08-23 | 1990-08-23 | Geniessbares schmiermittel mit zusatz von schmierwirkungsverbessernden estern aus fettsäuren und höheren alkoholen |
CS922719A CZ271992A3 (en) | 1990-08-23 | 1992-08-31 | Edible high-pressure lubricant, usable particularly for high-pressure compressors |
DE4229383A DE4229383C2 (de) | 1990-08-23 | 1992-09-03 | Genießbares Schmiermittel mit Zusatz von schmierwirkungsverbessernden Estern aus Fettsäuren und höheren Alkoholen |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4229383A1 true DE4229383A1 (de) | 1994-03-10 |
DE4229383C2 DE4229383C2 (de) | 1995-09-21 |
Family
ID=27147851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4229383A Expired - Fee Related DE4229383C2 (de) | 1990-08-23 | 1992-09-03 | Genießbares Schmiermittel mit Zusatz von schmierwirkungsverbessernden Estern aus Fettsäuren und höheren Alkoholen |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT396477B (de) |
CZ (1) | CZ271992A3 (de) |
DE (1) | DE4229383C2 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0694603A1 (de) * | 1994-06-24 | 1996-01-31 | Witco Corporation | Schmieröl mit Schmierbedingungsabhängiger Wirkung |
WO1996011245A1 (en) * | 1994-10-08 | 1996-04-18 | Exxon Research And Engineering Company | Lubricating grease for open gears, cables, and other exposed metal surfaces |
FR2753986A1 (fr) * | 1996-09-30 | 1998-04-03 | Elf Antar France | Lubrifiant pour hypercompresseur et procede d'obtention |
EP0879872A1 (de) * | 1997-05-20 | 1998-11-25 | Igol Industrie | Biologisch abbaubare und nicht-toxische Zucker-Polyester enthaltende Schmierölzusammensetzung |
EP1020511A2 (de) * | 1998-12-22 | 2000-07-19 | Exxon Research And Engineering Company | Schmiermittel für Nahrungsmittelindustriemaschine mit Antischlammeigenschaften bei hoher Temperatur |
US7220710B2 (en) | 2001-08-07 | 2007-05-22 | Sudzucker Aktiengesellschaft | Carbohydrate esters for using as lubricants |
EP2318492A1 (de) * | 2008-06-03 | 2011-05-11 | Inolex Investment Corporation | Verfahren zum schmieren von lebensmittelverarbeitungseinrichtungen und zugehörige lebensmittelqualität aufweisende hochtemperaturschmiermittel und zusammensetzungen |
WO2011130068A1 (en) | 2010-04-12 | 2011-10-20 | The Lubrizol Corporation | Food grade compressor lubricant |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10138686A1 (de) | 2001-08-07 | 2003-02-27 | Suedzucker Ag | Verwendung einer Polyester-Zusammensetzung als Hydraulikfluid |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4062785A (en) * | 1976-02-23 | 1977-12-13 | Borg-Warner Corporation | Food-compatible lubricant |
US5102567A (en) * | 1990-06-25 | 1992-04-07 | Amoco Corporation | High performance food-grade lubricating oil |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0127293A3 (de) * | 1983-04-24 | 1987-04-15 | HENKEL CORPORATION (a Delaware corp.) | Schmierölzusammensetzungen für das Spulen |
JPH06206289A (ja) * | 1992-09-07 | 1994-07-26 | Toppan Printing Co Ltd | 包装材料 |
-
1990
- 1990-08-23 AT AT0173590A patent/AT396477B/de active
-
1992
- 1992-08-31 CZ CS922719A patent/CZ271992A3/cs unknown
- 1992-09-03 DE DE4229383A patent/DE4229383C2/de not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4062785A (en) * | 1976-02-23 | 1977-12-13 | Borg-Warner Corporation | Food-compatible lubricant |
US5102567A (en) * | 1990-06-25 | 1992-04-07 | Amoco Corporation | High performance food-grade lubricating oil |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0694603A1 (de) * | 1994-06-24 | 1996-01-31 | Witco Corporation | Schmieröl mit Schmierbedingungsabhängiger Wirkung |
WO1996011245A1 (en) * | 1994-10-08 | 1996-04-18 | Exxon Research And Engineering Company | Lubricating grease for open gears, cables, and other exposed metal surfaces |
FR2753986A1 (fr) * | 1996-09-30 | 1998-04-03 | Elf Antar France | Lubrifiant pour hypercompresseur et procede d'obtention |
WO1998014537A1 (fr) * | 1996-09-30 | 1998-04-09 | Elf Antar France | Lubrifiant pour hypercompresseur et procede d'obtention |
EP0879872A1 (de) * | 1997-05-20 | 1998-11-25 | Igol Industrie | Biologisch abbaubare und nicht-toxische Zucker-Polyester enthaltende Schmierölzusammensetzung |
FR2763597A1 (fr) * | 1997-05-20 | 1998-11-27 | Igol Ind | Composition d'huile lubrifiante formee par un polyester de sucre biodegradable et non-toxique |
EP1020511A2 (de) * | 1998-12-22 | 2000-07-19 | Exxon Research And Engineering Company | Schmiermittel für Nahrungsmittelindustriemaschine mit Antischlammeigenschaften bei hoher Temperatur |
EP1020511A3 (de) * | 1998-12-22 | 2002-01-23 | ExxonMobil Research and Engineering Company | Schmiermittel für Nahrungsmittelindustriemaschine mit Antischlammeigenschaften bei hoher Temperatur |
US7220710B2 (en) | 2001-08-07 | 2007-05-22 | Sudzucker Aktiengesellschaft | Carbohydrate esters for using as lubricants |
EP2318492A1 (de) * | 2008-06-03 | 2011-05-11 | Inolex Investment Corporation | Verfahren zum schmieren von lebensmittelverarbeitungseinrichtungen und zugehörige lebensmittelqualität aufweisende hochtemperaturschmiermittel und zusammensetzungen |
EP2318492A4 (de) * | 2008-06-03 | 2012-04-11 | Inolex Investment Corp | Verfahren zum schmieren von lebensmittelverarbeitungseinrichtungen und zugehörige lebensmittelqualität aufweisende hochtemperaturschmiermittel und zusammensetzungen |
US11286442B2 (en) | 2008-06-03 | 2022-03-29 | Zschimmer & Schwarz, Inc. | Method of lubricating food processing equipment and related food grade, high temperature lubricants and compositions |
WO2011130068A1 (en) | 2010-04-12 | 2011-10-20 | The Lubrizol Corporation | Food grade compressor lubricant |
US8895490B2 (en) | 2010-04-12 | 2014-11-25 | The Lubrizol Corporation | Food grade compressor lubricant |
EP2910627A1 (de) * | 2010-04-12 | 2015-08-26 | The Lubrizol Corporation | Schmiermittel in Lebensmittelqualität für einen Verdichter |
Also Published As
Publication number | Publication date |
---|---|
DE4229383C2 (de) | 1995-09-21 |
ATA173590A (de) | 1993-01-15 |
AT396477B (de) | 1993-09-27 |
CZ271992A3 (en) | 1994-03-16 |
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