CA2093029C - Lubricants, particularly lubricating grease compositions for constant velocity universal joints - Google Patents
Lubricants, particularly lubricating grease compositions for constant velocity universal joints Download PDFInfo
- Publication number
- CA2093029C CA2093029C CA002093029A CA2093029A CA2093029C CA 2093029 C CA2093029 C CA 2093029C CA 002093029 A CA002093029 A CA 002093029A CA 2093029 A CA2093029 A CA 2093029A CA 2093029 C CA2093029 C CA 2093029C
- Authority
- CA
- Canada
- Prior art keywords
- ashless
- molybdenum
- group
- lubricating grease
- dithiophosphates
- 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 - Lifetime
Links
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
- 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
- C10M169/06—Mixtures of thickeners and additives
-
- 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
- C10M115/00—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof
- C10M115/08—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
-
- 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
- C10M119/00—Lubricating compositions characterised by the thickener being a macromolecular compound
- C10M119/24—Lubricating compositions characterised by the thickener being a macromolecular compound containing nitrogen
-
- 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
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
- C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
- C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the 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
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
- C10M137/10—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
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/006—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions used as thickening agents
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/026—Amines, e.g. polyalkylene polyamines; Quaternary amines used as thickening agents
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/08—Amides
- C10M2215/0813—Amides used as thickening agents
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/1013—Amides of carbonic or haloformic acids used as thickening agents
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
- C10M2215/1026—Ureas; Semicarbazides; Allophanates used as thickening material
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/12—Partial amides of polycarboxylic acids
- C10M2215/121—Partial amides of polycarboxylic acids used as thickening agents
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/2206—Heterocyclic nitrogen compounds used as thickening agents
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/225—Heterocyclic nitrogen compounds the rings containing both nitrogen and oxygen
- C10M2215/227—Phthalocyanines
- C10M2215/2275—Phthalocyanines used as thickening agents
-
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/044—Polyamides
-
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/045—Polyureas; Polyurethanes
-
- 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
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
-
- 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
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal 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
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/046—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for traction drives
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/06—Instruments or other precision apparatus, e.g. damping fluids
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
High performance lubricant compositions, particularly high performance lubricating grease for lubricating and reducing or eliminating shuddering in inboard constant velocity universal joints under high torque and high angle of articulation. In one preferred form, the lubricating grease comprises a base oil, a thickener and in intimate admixture therewith at least one organic molybdenum compound from the group consisting of molybdenum dithiophosphates and molybdenum dithiocarbamates and at least one ashless additive from the group consisting of ashless dithiophosphates and ashless dithiocarbamates.
Description
Cas~ 910226 LL1BI~IC~.NTS, PTdtTICOLARLY LTJBILIC~LTIPTG GREASE
COMPOSITIOIJS ~'OFt COP18TA3~TT ~IELOCIT3~ UI~TI~EItSAL JOINTS
JO~? C . gtOOT
MICHAEL A. ~PILSOF1 M~.RR B.~rUM
SPECTFTC~1TT01~T
BACKGROUND AND DESCRIRTION O~' THE INVENTION
This invention relates generally to lubricants and, more particularly, to lubricating greases which are particularly useful for lubricating and reducing or eliminating shuddering in constant velocity universal joints operating under high torque and high angle of articulation.
While the invention relates primarily to lubricating grease compositions, it also has utility in other lubricants such as lubricating oil.
Under high torque and high angle of articulation, inboard constant velocity universal joints give uneven torque to the wheels in automotive drives, pausing a shuddering sensation. The object of the invention, generally stated, is the provision of lubricants for such constant velocity universal joints which will reduce or eliminate such shuddering. Such lubricants or lubricating greases will have other applications wherein high performance low friction lubricants are required.
The procedures and equipment for producing lubricants, and particularly lubricating greases, are well known. Likewise, it is well known that a lubricating grease will comprise an oil and a thickening agent therefor as the base components and into which various low friction additives are intimately incorporated so as to result in a uniform intimate admixture of all components.
The present invention relates particularly to the combination of additives utilized, sometimes referred to as the "additive package". A lubricating grease formulated in accordance with the present invention will have the following general formula:
S~KN& FORMDL~A
Base Oil Thickening Agent Molybdenum Dithiocarbamate and/or Dithiophosphate Ashless Dithiophosphate and/or Dithiocarbamate Any suitable base oil may be utilized such as a mineral oil or a synthetic hydrocarbon oil having a viscosity of a lubricant. Various known thickening agents may be used the preferred ones being a urea type (monourea, diurea, triurea, tetraurea, and polyureaj.
The additives are commercially available from various sources under proprietary designations as follows:
Molybdenum dialkyl dithiocarbamate (MoDTC) and molybdenum dialkyl dithiophosphate (MoDTP) available from R.T. Vanderbilt Company, Inc. of Norwalk, Connecticut under the trademarks MOLYVAN A and MOLYVAN L, respectively. Molybdenum diaryl dithiophosphate available from ASAHI DENKA KOGYO K.K. SAKURA Lube 300. Ashless dithiophosphate and ashless dithiocarbamate available from R.T. Vanderbilt Company, Inc. under the trademarks VANLUBK
7611 and VANLUBE 732, respectively.
The following is a specific and preferred example of a lubricating gxease embodying the invention.
PR~FBRRED BKAMPLK
(Grease A) ~ By wei hq~t 600 SUS* Solvent Refined Paraffinic Oil 54.5 Polyurea Thickener 13.0 MolyVan L 1.0~
Vanlube 7611 1.5~
*600 Saybolt Universal Seconds Viscosity at 100°F.
~f~~:~%
The grease of the above preferred example was prepared in the following conventional manner.
Polyurea thickener was prepared in a kettle by adding: (a) about 30% by weight of a solvent extracted neutral base oil with a viscosity of 600 SUS at 100°F and (b) about 7.45% by weight of primary oleyl amine. The primary amine base oil was then mixed for 30-60 minutes at a maximum temperature of 120°F with about 5.4% by weight of an isocyanate, such as 143 L-MDT manufactured by Dow.
About 3% by weight water was then added and stirred for about 20 to 30 minutes before adding 40% base oil and heating to 320°F. The grease is then cooled to 180°F. At this time, 1% MolyVan L and 1.5% i7anlube 7611 are then added along with the remaining base oil. The resulting grease is then milled through a colloid type mill.
The grease of the above preferred example (Grease A) was subjected to the following standard physical tests with the results being tabulated as follows in comparison with:
(Grease B) Polyurea Base Grease (Grease C) 3% Moly Lithium (Grease D) Lithium Base Grease (Grease E) Lithium Base Grease w/Low Friction Additive Package (Grease F) Polyurea Base Grease w/3% Molybdenum disulfide 4 Ball Dropping Grease 60X* Wear** Point (A) 312 0.33 mm 412F
(B) 238 0.67 mm 412F
(C) 292 0.68 mm 401F
(D) 285 0.72 mm 408F
(E) 285 0.35 mm 417F
(F) 330 0.64 mm 423F
* 6~ Strakes in a standard grease worked as described in ~1STM Method D-217.
** ASTM Method D-2596-87.
The grease composition of the above-preferred example (Grease A) was subjected to Line Contact SRV friction and 1p load carrying test using the Optimol SRV Tester of Optimol Lubricants, Cartaret, New Jersey to demonstrate its ability to minimize or eliminate shuddering in a constant velocity universal joint. For purpose of comparison, the grease compositions of B-F above were also subjected to the same test. The comparative test results are tabulated as follows (Table 2).
~~~~~~r s O a. c c s O G O
C
s G C4 Ci C W O
C
'Ri H
a'~
, H ~ ~
ti C C C C O
N
n I
a a ~ ~ ~
~
H C C C O C
H G O
H
s~
O W O G
~w s~ ~~ ~c~
G G O C G C O G
G O G ~9 ~s C O C O
s ~ N ~ ~ ~ H H
H ,-~~ ~
C O O O C ~ O C
C O ~ 9 ~ ~ H ~ ~ N
H ~ H
C~ C O C O O G G c?
C O ~ O
A I 1 I ~ I 9 1 I 1 J
The following examples are given to illustrate other uses in which the invention may be practiced:
Antifriction Bearings (Ball ~ Roller) Reciprocating F~ivots Automotive Steering Linkage Automotive Ball Joints From the foregoing preferred example, it will be apparent that the various components may be utilised in various ranges. In general, the useful range for the combined base, fillers, oils and thickeners is from 80 to 99.9 percent by weight of the grease compositions and the useful range for the additive package is from 0.1 to 20 percent by weight.
COMPOSITIOIJS ~'OFt COP18TA3~TT ~IELOCIT3~ UI~TI~EItSAL JOINTS
JO~? C . gtOOT
MICHAEL A. ~PILSOF1 M~.RR B.~rUM
SPECTFTC~1TT01~T
BACKGROUND AND DESCRIRTION O~' THE INVENTION
This invention relates generally to lubricants and, more particularly, to lubricating greases which are particularly useful for lubricating and reducing or eliminating shuddering in constant velocity universal joints operating under high torque and high angle of articulation.
While the invention relates primarily to lubricating grease compositions, it also has utility in other lubricants such as lubricating oil.
Under high torque and high angle of articulation, inboard constant velocity universal joints give uneven torque to the wheels in automotive drives, pausing a shuddering sensation. The object of the invention, generally stated, is the provision of lubricants for such constant velocity universal joints which will reduce or eliminate such shuddering. Such lubricants or lubricating greases will have other applications wherein high performance low friction lubricants are required.
The procedures and equipment for producing lubricants, and particularly lubricating greases, are well known. Likewise, it is well known that a lubricating grease will comprise an oil and a thickening agent therefor as the base components and into which various low friction additives are intimately incorporated so as to result in a uniform intimate admixture of all components.
The present invention relates particularly to the combination of additives utilized, sometimes referred to as the "additive package". A lubricating grease formulated in accordance with the present invention will have the following general formula:
S~KN& FORMDL~A
Base Oil Thickening Agent Molybdenum Dithiocarbamate and/or Dithiophosphate Ashless Dithiophosphate and/or Dithiocarbamate Any suitable base oil may be utilized such as a mineral oil or a synthetic hydrocarbon oil having a viscosity of a lubricant. Various known thickening agents may be used the preferred ones being a urea type (monourea, diurea, triurea, tetraurea, and polyureaj.
The additives are commercially available from various sources under proprietary designations as follows:
Molybdenum dialkyl dithiocarbamate (MoDTC) and molybdenum dialkyl dithiophosphate (MoDTP) available from R.T. Vanderbilt Company, Inc. of Norwalk, Connecticut under the trademarks MOLYVAN A and MOLYVAN L, respectively. Molybdenum diaryl dithiophosphate available from ASAHI DENKA KOGYO K.K. SAKURA Lube 300. Ashless dithiophosphate and ashless dithiocarbamate available from R.T. Vanderbilt Company, Inc. under the trademarks VANLUBK
7611 and VANLUBE 732, respectively.
The following is a specific and preferred example of a lubricating gxease embodying the invention.
PR~FBRRED BKAMPLK
(Grease A) ~ By wei hq~t 600 SUS* Solvent Refined Paraffinic Oil 54.5 Polyurea Thickener 13.0 MolyVan L 1.0~
Vanlube 7611 1.5~
*600 Saybolt Universal Seconds Viscosity at 100°F.
~f~~:~%
The grease of the above preferred example was prepared in the following conventional manner.
Polyurea thickener was prepared in a kettle by adding: (a) about 30% by weight of a solvent extracted neutral base oil with a viscosity of 600 SUS at 100°F and (b) about 7.45% by weight of primary oleyl amine. The primary amine base oil was then mixed for 30-60 minutes at a maximum temperature of 120°F with about 5.4% by weight of an isocyanate, such as 143 L-MDT manufactured by Dow.
About 3% by weight water was then added and stirred for about 20 to 30 minutes before adding 40% base oil and heating to 320°F. The grease is then cooled to 180°F. At this time, 1% MolyVan L and 1.5% i7anlube 7611 are then added along with the remaining base oil. The resulting grease is then milled through a colloid type mill.
The grease of the above preferred example (Grease A) was subjected to the following standard physical tests with the results being tabulated as follows in comparison with:
(Grease B) Polyurea Base Grease (Grease C) 3% Moly Lithium (Grease D) Lithium Base Grease (Grease E) Lithium Base Grease w/Low Friction Additive Package (Grease F) Polyurea Base Grease w/3% Molybdenum disulfide 4 Ball Dropping Grease 60X* Wear** Point (A) 312 0.33 mm 412F
(B) 238 0.67 mm 412F
(C) 292 0.68 mm 401F
(D) 285 0.72 mm 408F
(E) 285 0.35 mm 417F
(F) 330 0.64 mm 423F
* 6~ Strakes in a standard grease worked as described in ~1STM Method D-217.
** ASTM Method D-2596-87.
The grease composition of the above-preferred example (Grease A) was subjected to Line Contact SRV friction and 1p load carrying test using the Optimol SRV Tester of Optimol Lubricants, Cartaret, New Jersey to demonstrate its ability to minimize or eliminate shuddering in a constant velocity universal joint. For purpose of comparison, the grease compositions of B-F above were also subjected to the same test. The comparative test results are tabulated as follows (Table 2).
~~~~~~r s O a. c c s O G O
C
s G C4 Ci C W O
C
'Ri H
a'~
, H ~ ~
ti C C C C O
N
n I
a a ~ ~ ~
~
H C C C O C
H G O
H
s~
O W O G
~w s~ ~~ ~c~
G G O C G C O G
G O G ~9 ~s C O C O
s ~ N ~ ~ ~ H H
H ,-~~ ~
C O O O C ~ O C
C O ~ 9 ~ ~ H ~ ~ N
H ~ H
C~ C O C O O G G c?
C O ~ O
A I 1 I ~ I 9 1 I 1 J
The following examples are given to illustrate other uses in which the invention may be practiced:
Antifriction Bearings (Ball ~ Roller) Reciprocating F~ivots Automotive Steering Linkage Automotive Ball Joints From the foregoing preferred example, it will be apparent that the various components may be utilised in various ranges. In general, the useful range for the combined base, fillers, oils and thickeners is from 80 to 99.9 percent by weight of the grease compositions and the useful range for the additive package is from 0.1 to 20 percent by weight.
Claims (4)
1. A lubricant composition comprising a base oil and a thickening agent comprising a mono urea compound, and in intimate admixture therewith additives comprising at least one organic molybdenum compound selected from the group consisting of molybdenum dithiocarbamates and molybdenum dithiophosphates and at least one ashless additive selected from the group consisting of ashless dithiophosphates and ashless dithiocarbamates.
2. A lubricating grease comprising a base oil and a thickening agent therefor comprising a mono urea compound and in intimate admixture therewith additives comprising at least one organic molybdenum compound selected from the group consisting of molybdenum dithiocarbamates and molybdenum dithiophosphates and at least one ashless additive selected from the group consisting of ashless dithiophosphates and ashless dithiocarbamates.
3. A lubricant composition comprising a base oil and a thickening agent comprising a mono urea compound, and in intimate admixture therewith additives comprising (1) at least one molybdenum compound selected from the group consisting of molybdenum dialkyl dithiophosphate, molybdenum dialkyl dithiocarbamate and molybdenum diaryl dithiophosphate and (2) an ashless additive selected from the group consisting of ashless dithiocarbamate and ashless dithiophosphate.
4. A lubricating grease comprising a base oil and a polyurea thickening agent therefor including at least a mono urea compound, and in intimate admixture therewith approximately 1.0% by weight of molybdenum dialkyl dithiophosphate and approximately 1.5% by weight of ashless dithiophosphate.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86844592A | 1992-04-14 | 1992-04-14 | |
US868,445 | 1992-04-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2093029A1 CA2093029A1 (en) | 1993-10-15 |
CA2093029C true CA2093029C (en) | 2003-07-29 |
Family
ID=25351699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002093029A Expired - Lifetime CA2093029C (en) | 1992-04-14 | 1993-03-31 | Lubricants, particularly lubricating grease compositions for constant velocity universal joints |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0566326A1 (en) |
JP (1) | JPH0617075A (en) |
CA (1) | CA2093029C (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995007964A1 (en) * | 1993-09-13 | 1995-03-23 | Exxon Research And Engineering Company | Lubricant composition containing antiwear additive combination |
US6187723B1 (en) * | 1993-09-13 | 2001-02-13 | Exxon Research And Engineering Company | Lubricant composition containing antiwear additive combination |
DE4437247A1 (en) * | 1994-10-18 | 1996-04-25 | Schaeffler Waelzlager Kg | Linear guide unit |
US6214778B1 (en) | 1995-08-24 | 2001-04-10 | The Lubrizol Corporation | Polyurea-thickened grease composition |
JP2006071104A (en) * | 1997-07-02 | 2006-03-16 | Nsk Ltd | Rolling bearing |
JP2000303087A (en) * | 1999-04-21 | 2000-10-31 | Showa Shell Sekiyu Kk | Grease composition for constant-velocity joint |
JP4794084B2 (en) * | 2001-08-17 | 2011-10-12 | 出光興産株式会社 | Grease composition for propeller shaft |
KR100742921B1 (en) * | 2001-11-30 | 2007-07-25 | 주식회사 포스코 | Zinc-free hydraulic oil composition |
CN111979024A (en) * | 2020-08-20 | 2020-11-24 | 中国石油化工股份有限公司 | Light hammer lubricating grease composition and preparation method and application thereof |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1954452C3 (en) * | 1969-10-29 | 1978-09-28 | Optimol-Oelwerke Gmbh, 8000 Muenchen | lubricant |
DE2108780C2 (en) * | 1971-02-24 | 1985-10-17 | Optimol-Ölwerke GmbH, 8000 München | Lubricant or lubricant concentrate |
US4360438A (en) * | 1980-06-06 | 1982-11-23 | R. T. Vanderbilt Company, Inc. | Organomolybdenum based additives and lubricating compositions containing same |
JPS5911397A (en) * | 1982-06-09 | 1984-01-20 | Idemitsu Kosan Co Ltd | Fatigue life modifying lubricant |
DE3303442A1 (en) * | 1983-02-02 | 1984-08-16 | Optimol-Ölwerke GmbH, 8000 München | LUBRICATING GREASE COMPOSITION, THEIR PRODUCTION AND USE |
JPS6346299A (en) * | 1986-01-16 | 1988-02-27 | Ntn Toyo Bearing Co Ltd | Grease for constant speed joint |
DE69004550T2 (en) * | 1989-12-27 | 1994-05-11 | Nissan Motor | Grease for homokinetic coupling. |
JP2989311B2 (en) * | 1991-04-30 | 1999-12-13 | 協同油脂株式会社 | Grease composition for constant velocity joints |
-
1993
- 1993-03-31 CA CA002093029A patent/CA2093029C/en not_active Expired - Lifetime
- 1993-04-08 EP EP93302790A patent/EP0566326A1/en not_active Withdrawn
- 1993-04-09 JP JP5083402A patent/JPH0617075A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH0617075A (en) | 1994-01-25 |
CA2093029A1 (en) | 1993-10-15 |
EP0566326A1 (en) | 1993-10-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6037314A (en) | Grease composition for constant velocity joints | |
KR0147802B1 (en) | Grease composition for velocity joint | |
US5624889A (en) | Lubricating grease composition | |
US5516439A (en) | Grease composition for constant velocity joints | |
ZA200510013B (en) | Urea grease composition for constant velocity joints | |
US6319880B1 (en) | Grease composition for constant velocity joint | |
US5604187A (en) | Grease composition for constant velocity joints | |
JP2009167422A (en) | Grease composition for constant velocity joint | |
US5952273A (en) | Grease composition for constant velocity joints | |
EP0435745B1 (en) | Grease for constant velocity joint | |
EP0708172B1 (en) | Grease composition for constant velocity joints | |
CA2093029C (en) | Lubricants, particularly lubricating grease compositions for constant velocity universal joints | |
EP0960180A1 (en) | Urea grease composition | |
ZA200206944B (en) | Grease composition for constant velocity joints. | |
EP0998544B1 (en) | Grease composition for a constant velocity joint | |
JPH04130193A (en) | Grease for synchronous joint | |
JP4381499B2 (en) | Lubricating grease composition for constant velocity joints | |
US20030027728A1 (en) | Grease composition for constant velocity joints | |
JPH06313184A (en) | Grease composition |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request |