DE2005755A1 - Multi-range lubricating oils - Google Patents

Multi-range lubricating oils

Info

Publication number
DE2005755A1
DE2005755A1 DE19702005755 DE2005755A DE2005755A1 DE 2005755 A1 DE2005755 A1 DE 2005755A1 DE 19702005755 DE19702005755 DE 19702005755 DE 2005755 A DE2005755 A DE 2005755A DE 2005755 A1 DE2005755 A1 DE 2005755A1
Authority
DE
Germany
Prior art keywords
lubricating oils
oils
cst
range
molecular weight
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
DE19702005755
Other languages
German (de)
Inventor
Herbert Dr.; Rumpf Kurt K. Dipl.-Ing.; 6900 Heidelberg Petrovicki
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.)
Evonik Operations GmbH
Original Assignee
Technochemie GmbH Verfahrenstechnik
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
Application filed by Technochemie GmbH Verfahrenstechnik filed Critical Technochemie GmbH Verfahrenstechnik
Priority to DE19702005755 priority Critical patent/DE2005755A1/en
Publication of DE2005755A1 publication Critical patent/DE2005755A1/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M3/00Liquid compositions essentially based on lubricating components other than mineral lubricating oils or fatty oils and their use as lubricants; Use as lubricants of single liquid substances
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026Butene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/282Esters of (cyclo)aliphatic oolycarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/34Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01Physico-chemical properties
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/02Bearings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

Multi-range lubricating oils are based on diesters with 25-28C atoms, alone or mixed with mineral oils and in latter case with at least 10% diester in the mixture, and contain a polyolefine with av. mol. wt. of 3000-20,000. The lubricating oils remains fluid and mobile at low temps. and thus no starting difficulties are experienced at low temps. in case of e.g. combustion motors.

Description

Mehrbereichsschrnierölc Die Erfindung betrifft Iviehrbereichsschmieröle, die sich insbesondere dadurch auszeichnen, dass sie auch bei- recht niedriger Temperatur im rader einer Maschine, z.13. eines Verbrennungsmotors, noch so dünnflüssig sind, dass keine Startschwierigkeiten auftreten, Die neuen Ole bestehen aus Die stern bifunktioneller Säuren oder Alkoholen mit insgesamt zwischen 25 und 28 Kohlenstoffatomen sowie einem Polyolefin im mittleren Nolekulargewichtsbereich zwischen etwa 30ao und 20000 als Viskositätsindexverbesserer und können daneben aromatenarme mineralische Schmieröle und / oder Schmiermitteladditive enthalten, wobei jedoch der Diesteranteil 10 % nicht unterschreiten soll. Das Polyolefin im angegebenen Molgewichtsbereich verbessert die Kalt startbereit schaft solcher Öle in völlig unerwarteter Weise: Die tatsächlichen Kältevikositäten, also die gemessenen, dieser Öle liegen deutlich unter der berechneten, und in jedem Fall günstiger als bei den zugrundeliegenden, keine Polyolefine des genannten Molekulargewichtsbereichs enthaltenden Ölen, wie durch Messung im CCS-Gerät nach AST D 2602 leicht festzustellen ist. Multi-grade lubricating oils The invention relates to multi-grade lubricating oils, which are particularly characterized by the fact that they are also at a very low temperature in the wheel of a machine, e.g. 13. of an internal combustion engine, no matter how thin they are, that no starting difficulties arise, the new oils consist of the star bifunctional acids or alcohols with a total of between 25 and 28 carbon atoms and a polyolefin in the mean molecular weight range between about 30ao and 20,000 as viscosity index improvers and can also use low-aromatic mineral Contain lubricating oils and / or lubricant additives, but the diester portion Should not fall below 10%. The polyolefin in the specified molecular weight range improves the cold start readiness of such oils in a completely unexpected way: The actual cold viscosities, i.e. the measured ones, of these oils are clear below the calculated, and in any case cheaper than the underlying, no polyolefins in the specified molecular weight range containing Oiling, as can easily be determined by measuring in the CCS device according to AST D 2602.

Motorenschmierölc auf der Grundlage von Die stern von Dicarbonsäuren oder von Diolen allein oder im Gemisch mit Mineralölen rinden vor allem auch wegen ihrer ausgezeichneten Kaltstarteigenschaften immer mehr Eingang.Engine lubricating oil based on the star of dicarboxylic acids or from diols alone or in a mixture with mineral oils rind mainly because of their excellent cold start properties are gaining more and more input.

Um solchen ölen gleichzeitig hohe Hitzestandrestigkeit zu geben, wird die Hitzeviskosität durch Zusatz von Polymeren vergrössert. Dadurch verlieren die Esteröle weitgehend ihre Newton'schen Eigenschaften, und die bei höheren Schergefällen, die der Schmierigsanwendung entsprechen sollen, gemessenen Kälteviskositäten liegen bisweilen um einen Faktor 2 bis 3 höher, als die nach Ublicher Methode (Walther-Ubbelohde DIN 51562) extrapolierten Viskositäten. Dieser Faktor nimmt mit fallender Temperatur zu, steigt bei gegebener Temperatur Jedoch im allgemeinen mit dem Molekulargewicht des V.I.-Verbesserers an.In order to give such oils high heat resistance at the same time the heat viscosity is increased by the addition of polymers. As a result, they lose Ester oils largely retain their Newtonian properties, and those at higher shear rates, which should correspond to the application of the lubricant are measured at low temperatures sometimes a factor of 2 to 3 higher than that according to the usual method (Walther-Ubbelohde DIN 51562) extrapolated viscosities. This factor increases with falling temperature However, at a given temperature, it generally increases with the molecular weight of the V.I. improver.

Der Zusatz von Polyolefinen des nach der Erfindung, z,B.The addition of polyolefins according to the invention, z, B.

von Polyisobutylen Molekulargewichtsbereichs von 3000 bis 20000 dieses Bereichs hat die überraschende und technisch wichtige Wirkung, dass die bei höheren Schergefällen gemessenen Kälteviskositäten niedriger liegen als die nach DIN 51562 extrapolierten: Beispiel 1 Ein Mehrbereichsöl rçE 20W/50 von guten Kälteeigensohaften (kaltstartfähig bis etwa -150C) nebst guter Hitzestandfestigkeit (5 cSt bei 1356C) besteht aus: 25 Gew.% Trimethyladipinsäure-di (n-C9)-Ester 59 Gew.% Mineralöl (100 V.I. paraffinbasisches Solventraffinat) V 210 F = 11,3 cSt 10 Gew. Polyisobutylen A (mittleres Molgewicht = 3000) 6 Gew.% Additiv (Detergent-Dispersant-Inhibitor zur Erzielung der " motorischen Performance MS") Viskosität: Oo F extrapoliert (cSt) 9.600 aus V 210 F u. V 100 F 0° F CCS-Gerät ASTM D 2602 (in cSt umgerechnet) 8.830 Verhältnis CCS/extrapoliert 0,92 Beispiel 2 Zur Herstellung eines Flugtriebwerksschmieröles mit einer Viskosität von 5 cSt bei 210°F kann ein thermostabiler Diester mit n cSt bei 210°F, der praktisch eine Newton'sche Flüssigkeit darstellt, mit einer Aufmischung aus dem gleichen Diester und Polyisobutylen, Verwendung finden. Eine solche Mischkomponente besteht z.B. aus: 75 % Trime thyladipinsäure -di (n-C,: -Ester 25 % Polyisobutylen mit Molgewicht ca 18 000.of polyisobutylene molecular weight range from 3,000 to 20,000 that Range has the surprising and technically important effect that the higher range Shear gradients measured cold viscosities are lower than those according to DIN 51562 extrapolated: Example 1 A multigrade oil rçE 20W / 50 with good cold properties (cold start up to about -150C) in addition to good heat resistance (5 cSt at 1356C) consists: 25% by weight trimethyladipic acid di (n-C9) ester 59% by weight Mineral oil (100 V.I. paraffin-based solvent raffinate) V 210 F = 11.3 cSt 10 wt. Polyisobutylene A (average molecular weight = 3000) 6% by weight additive (detergent-dispersant inhibitor to achieve the "motor performance MS") Viscosity: Oo F extrapolated (cSt) 9.600 from V 210 F and V 100 F 0 ° F CCS device ASTM D 2602 (converted into cSt) 8.830 Ratio CCS / extrapolated 0.92 Example 2 For the production of an aircraft engine lubricating oil with a viscosity of 5 cSt at 210 ° F, a thermostable diester of n cSt at 210 ° F, which is essentially Newtonian fluid, with a dilution from the same diester and polyisobutylene, use. Such a blending component consists e.g. of: 75% trimethyladipic acid -di (n-C ,: -ester 25% polyisobutylene with a molecular weight of approx. 18,000.

Diese hat folgende Eigenschaften: V 210° F = 15,5 cSt V.I. = 155 V -20° F = 2000 c9t extrapoliert bzw. 1740 cSt gemessen nach ASTM D 2602.This has the following properties: V 210 ° F = 15.5 cSt V.I. = 155 V -20 ° F = 2000 c9t extrapolated or 1740 cSt measured according to ASTM D 2602.

Das Verhältnis der gemessenen zur extrapolierten Viskosität bei 200 F ist demnach 0187.The ratio of measured to extrapolated viscosity at 200 F is therefore 0187.

Eine Mischung aus 26 ß obiger Mischkomponente und 74 s des Ausgangs-Diesters hat V 2100 F = 5,0 cSt bei V.I. = 170 und verhält sich entsprechend dem Anteil der Mischkomponente ebenfalls in der Viskosität bei dem Schergefälle der Methode ASTM D 2602 und bei -20° F günstiger. (Der niedrige Viskositätswert lässt sich Jedoch auf dem Gerät nicht messen, während Messungen bei niedrigerer Temperatur als -200F nicht zulaaSig sind.)A mixture of 26 ß of the above mixed component and 74 s of the starting diester has V 2100 F = 5.0 cSt at V.I. = 170 and behaves according to the proportion of Mixing component also in the viscosity at the shear rate of the ASTM method D 2602 and cheaper at -20 ° F. (However, the low viscosity value can Do not measure on the device while taking measurements at a temperature lower than -200F are not permitted.)

Claims (1)

Patentanspruch: Mehrbereichsschmieröle auf der Grundlage von Die stern mit 25 bis 28 C-Atomen allein oder in Mischung mit Mineralölen, letzterenfalls mit mindestens 10 % Diester in der Mischung, gekennzeichnet durch einen Gehalt an Polyolefin mit einem mittleren Molgewicht zwischen etwa 3000 und 20000.Claim: multigrade lubricating oils based on Die stern with 25 to 28 carbon atoms alone or in a mixture with mineral oils, in the latter case with at least 10% diester in the mixture, characterized by a content of polyolefin with an average molecular weight between about 3000 and 20,000.
DE19702005755 1970-02-09 1970-02-09 Multi-range lubricating oils Pending DE2005755A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19702005755 DE2005755A1 (en) 1970-02-09 1970-02-09 Multi-range lubricating oils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702005755 DE2005755A1 (en) 1970-02-09 1970-02-09 Multi-range lubricating oils

Publications (1)

Publication Number Publication Date
DE2005755A1 true DE2005755A1 (en) 1971-08-19

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Country Status (1)

Country Link
DE (1) DE2005755A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088453A1 (en) * 1982-03-10 1983-09-14 UNIROYAL CHEMICAL COMPANY, Inc. Lubricating composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088453A1 (en) * 1982-03-10 1983-09-14 UNIROYAL CHEMICAL COMPANY, Inc. Lubricating composition

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