CA1168650A - Lubricating oil composition comprising lubricating oil, a basic metal salt and an alkoxylated metal dithiophosphate - Google Patents

Lubricating oil composition comprising lubricating oil, a basic metal salt and an alkoxylated metal dithiophosphate

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Publication number
CA1168650A
CA1168650A CA000368256A CA368256A CA1168650A CA 1168650 A CA1168650 A CA 1168650A CA 000368256 A CA000368256 A CA 000368256A CA 368256 A CA368256 A CA 368256A CA 1168650 A CA1168650 A CA 1168650A
Authority
CA
Canada
Prior art keywords
lubricating oil
oil composition
metal
compound
composition
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
Application number
CA000368256A
Other languages
French (fr)
Inventor
Feike De Jong
Corrie M.J. Leenaars
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 Canada Ltd
Original Assignee
Shell Canada Ltd
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 Shell Canada Ltd filed Critical Shell Canada Ltd
Application granted granted Critical
Publication of CA1168650A publication Critical patent/CA1168650A/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M163/00—Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/027—Neutral salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/028—Overbased salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/144—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings containing hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/146—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings having carboxyl groups bound to carbon atoms of six-membeered aromatic rings having a hydrocarbon substituent of thirty or more carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/16—Naphthenic acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/26—Overbased carboxylic acid salts
    • C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/046—Overbasedsulfonic acid salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2225/00—Organic macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2225/00—Organic macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2225/02—Macromolecular compounds from phosphorus-containg monomers, obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12

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

A B S T R A C T
LUBRICATING OIL COMPOSITION COMPRISING LUBRICATING OIL, A BASIC METAL SALT AND AN ALKOXYLATED METAL DITHIOPHOSPHATE

A composition with extreme pressure/anti-wear, anti-oxidant improved anti-rust activity in lubricating oils comprising:
I an oil-soluble metal compound selected from the group consisting of basic alkali or alkaline earth metal salts of carboxylic acids, sulphonic acids, naphthenic acids and alkyl phenols, and II a group II metal dithiophosphate based on an alkoxylated alcohol.

Description

LUBRICATING OIL CO~OSITION COMPRISING LUBRICATI~G OIL, A BASIC METAL SAI.~ ~ND AN ALKOXYLATED METAL DITHIOPHOSPHATE

~he invention relates to a lubricating oil composition comprising a major proportion of a lubricating oil and a minor proportion of a basic metal salt and an alkoxylated metal dithiophosphate.
Non-alkoxylated metal dithiophosphates such as zinc di-alkyldithiophosphates (ZDTP) are currently used in lubricating oils as extreme pressure/anti-wear and anti-oxidant additives.
From German patent application 2,216,684 lubricating oil compositions are known comprising a lu~ricating oil, alkaryl-oxypolyalkoxylated zinc dithiophosphates and N-acylsarcosin as eomponents, while other addi-tives such as basic barium sulphonate may be present. These lubricating oil compositions are used as lubrieants ~or hydraulie power transmission systems for whieh lubrieants are needed with a long duration.
~rom U.S. patent speei~ication 3,337~65l~ a metal dithio-phosphate similar to that which is part of the present lubricating oil composition is known. However, the combination in a lubrieating oil composition o~ this type of metal dithio-phosphates with basic alkali or alkaline earth metal salts o~ earboxylic acids, sulphonic acids, naphthenic acids or alkyl phenols is neither described nor re~erred to in the above patent speci~ication.
Applicants have ~ound a lubricating oil composition which shows a combination of unexpected activities. It shows not only the desired ZDTP activities like extreme pressure/anti-wear activity but moreover it appears also to boost the anti-rust performance o~ basic metal-containing detergents.

, ': '' "
': , :

The present invention provides a lubricating oil composition comprising a major proportion of a lubricating oil and a minor proportion o~ each of:
I an oil-soluble metal compound selected from the group consisting of basic alkali or alkaline earth metal salts of carboxylic acids, sulphonic acids, naphthenic acids and alkyl phenols, and II a group II metal dithiophosphate, based on an alkoxylated alcohol, with formula:
S

(c2H4o)x(c3H6o)y - P - (OC3H6)q(oc2H4) OR2 S.M2 wherein R1 and R2 are non-aromatic hydrocarbon radicals each having from 1 to 30 carbon atoms and wherein x, y, p and q each are numbers in the range from 0 to 10, x + y + p + q ~ 1, and M is selected from the group consisting of Zn, Mg, Ca and Ba.
Preferably, x - p is in the range of from 0 6 and y = q is in the range of from o-6.
The hydrocarbon radicals R1 and R2 have preferably 3-18 carbon atoms. The group II metal M is preferably zinc.
The oil-soluble metal compound (compound I) has prefer-ably a basicity index of 2-10 (number of equivalents of metal per equivalent of acid). Compound I is preferably an alkaline earth metal salt of a C6 20-alkylsalicylate, such as a Ca-~ Ba-~
Sr-or Mg-salt, preferably a Ca-salt, and mixtures -thereof, e.g. a mixture of a Ca-salt and a Mg-salt.
The lubricating oil composition preferably comprises 85 to 99.45%~ of a lubricating oil and from 0.5 to 10%w of compound I
and from 0.05 to 5%w of compound II. Preferably the lubricating oil composition contains a high viscosity index (HVI) lubricating oil (VI at least 80).

'' , :

8 ~

The present combination of additives may be used together with other additives incorporated in the luoricating oil com-position.For example viscosity index improvers, pour point depressants, anti-foam additives, detergents, anti-oxidants, anti-corrosion additives, etc. may be present in the oil com-position which comprises the present combination of additives.
The present invention will now be illustrated with reference to the following Examples.
E~AMPLE I
In order to compare the anti-rust performance of an oil composition comprising normal zinc dithiophosphate and a basic calcium alkylsalicylate with an alkyl group containing 14-20 C-atoms and having a basicity index of 3.0 (Composition A) with that of oil compositions comprising polyalkoxylated zinc di-thiophosphate and the above basic calcium alkylsalicylate (Compositions Bn) a constant-interface neutralization rate test was carried out with each of the lubricating oil compositions.
The constant-interface neutralization rate test is a test for determining the time needed ~or neutralization of acid by the oil composition. Neutralization is determined with a pH meter.
A HVI base oil was used. As reference an oil composition com-prising 96%w of the HVI oil ~ 4%w of the above calcium alkyl-salicylate (totally 20 grams) was used.
The experiment was carried out as ~ollows: 20 grams of the oil composition and 100 ml 0.001 N H2S04 were stirred at 90 C
and the pH value was measured. The time needed for neutralization of the reference oil composition was given the rela-tive neutral-ization time value: 100.
In Table I the relative neutraliza-tion -time of the oil com-posi-tions A, B (n = integer) and the reference oil composition is given.
Composition A is the reference oil composition to which a normal zinc dithiophosphate with formula:

.

, R10 - P - OR2 , wherein R1 = R2 = C12 ~ C15 sznO.5 has been added. Composition B is the reference oil composition to which an ethoxylated æinc dithiophosphate with ~orrnula:

S
1 2 4 )x( 3H60)y - P - (OC3H6)q(oc2Hl) OR2 ZnO . 5 has been added.
TABLE I
Oil composition Relati~e neutral-%w ization time Reference 100 _________,_____________________ ____________ ___________ A 2.0 87 X_p.3Rl R2 C12 C15, 3.2 48 Y~q=O
B 0.2 48 B : R1=R2=Cg~C11~ 0.2 36 x=p=5 y q=O

3 3.4 4 B R~=R2=C12-C15 0.2 44 x=p=5-~
y=q=4.3 x=p-O 1 R2 C12 C15 0.2 46 Y=q=5 ' ~: :

From Table I it is clear that zinc dithiophosphates based on etho.Yylated alcohols greatly reduce the neutralization time of the basic calcium alkylsalicylate, whereas normal zinc di-thiophosphate has little effect on the neutralization rate of the basic calcium alkylsalicylate.
EXAMPLE II
To demonstrate the neutral or even adverse influence of N-acylsarcosin as described in German patent application
2,216,684 on the neutralization rate of the above basic calcium alkylsalicylate a neutralization rate test was carried out with the aforementioned reference oil composition to which 0.1%w oleyl sarcosin with the formula:

had been added. The test result gave a relative neutralization time value of 176, which indicates the adverse influence of the sareosin eompound on the anti-rust performanee o~ the basie ealeium alkylsalieylate.

- . , . , , ~ . . .
:, ' '. ' : , . .

Claims (8)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A lubricating oil composition comprising a major proportion of a lubricating oil and a minor proportion of each of:
I an oil-soluble metal compound selected from the group consisting of basic alkali or alkaline earth metal salts of carboxylic acids, sulphonic acids, naphthenic acids and alkyl phenols, and II a group II metal dithiophosphate, based on an alkoxylated alcohol, with formula:

wherein R1 and R2 are non-aromatic hydrocarbon radicals, each having from 1 to 30 carbon atoms and wherein x, y, p and q each are numbers in the range from 0 to 10, x + y + p + q > 1, and M is selected from the group consisting of Zn, Mg, Ca and Ba.
2. A lubricating oil composition as claimed in claim 1, wherein x = p and is in the range of from 0-6; and y = q and is in the range of from 0-6.
3. A lubricating oil composition as claimed in claim 1 or 2, wherein R1 and R2 are hydrocarbon radicals, each having 3-18 carbon atoms.
4. A lubricating oil composition as claimed in claim 1, wherein M is Zn.
5. A lubricating oil composition as claimed in claim 1, wherein compound I has a basicity index of 2-10.
6. A lubricating oil composition as claimed in claim 5, wherein compound I is a basic calcium alkylsalicylate with an alkyl group containing 6-20 C-atoms.
7. A lubricating oil composition as claimed in claim 1 comprising 85-99.45%w of a lubricating oil, 0.5 to 10%w of compound I and from 0.05 to 5%w of compound II.
8. A lubricating oil composition as claimed in claim 1, wherein the lubricating oil is a high viscosity index oil having a viscosity index of at least 80.
CA000368256A 1980-02-25 1981-01-12 Lubricating oil composition comprising lubricating oil, a basic metal salt and an alkoxylated metal dithiophosphate Expired CA1168650A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8006268A GB2070054B (en) 1980-02-25 1980-02-25 Lubricating oil comprising a basic metal salt and an alkoxylated metal dithiophosphate
GB8006268 1980-02-25

Publications (1)

Publication Number Publication Date
CA1168650A true CA1168650A (en) 1984-06-05

Family

ID=10511649

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000368256A Expired CA1168650A (en) 1980-02-25 1981-01-12 Lubricating oil composition comprising lubricating oil, a basic metal salt and an alkoxylated metal dithiophosphate

Country Status (4)

Country Link
BE (1) BE887635A (en)
CA (1) CA1168650A (en)
FR (1) FR2476675A1 (en)
GB (1) GB2070054B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3337654A (en) * 1963-12-12 1967-08-22 Universal Oil Prod Co Oxyalkylenated hydroxyhydrocarbon thiophosphates
US3390082A (en) * 1967-09-19 1968-06-25 Lubrizol Corp Lubricants containing metal-free dispersants and inhibitors
US3640872A (en) * 1968-10-25 1972-02-08 Texaco Inc Automatic transmission fluid
US3907704A (en) * 1971-12-23 1975-09-23 Lubrizol Corp Nitrogen-containing compositions useful as rust inhibitors in fuels and lubricants

Also Published As

Publication number Publication date
FR2476675A1 (en) 1981-08-28
GB2070054A (en) 1981-09-03
GB2070054B (en) 1983-07-06
FR2476675B1 (en) 1984-12-28
BE887635A (en) 1981-08-24

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