GB2192896A - Stabilized lubricant - Google Patents
Stabilized lubricant Download PDFInfo
- Publication number
- GB2192896A GB2192896A GB08715993A GB8715993A GB2192896A GB 2192896 A GB2192896 A GB 2192896A GB 08715993 A GB08715993 A GB 08715993A GB 8715993 A GB8715993 A GB 8715993A GB 2192896 A GB2192896 A GB 2192896A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lubricant
- resin
- oils
- greases
- lubricants
- 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
Links
- 239000000314 lubricant Substances 0.000 title claims abstract description 33
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 229920001721 polyimide Polymers 0.000 claims abstract description 8
- 229910052582 BN Inorganic materials 0.000 claims abstract description 7
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 7
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 7
- 125000003118 aryl group Chemical group 0.000 claims abstract description 6
- 239000009719 polyimide resin Substances 0.000 claims abstract description 6
- 239000004519 grease Substances 0.000 claims abstract description 4
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 7
- 229920002530 polyetherether ketone Polymers 0.000 claims description 7
- 239000004695 Polyether sulfone Substances 0.000 claims description 2
- 239000004697 Polyetherimide Substances 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 2
- 229920001643 poly(ether ketone) Polymers 0.000 claims description 2
- 229920002492 poly(sulfone) Polymers 0.000 claims description 2
- 229920001230 polyarylate Polymers 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920006393 polyether sulfone Polymers 0.000 claims description 2
- 229920001601 polyetherimide Polymers 0.000 claims description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 22
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 2
- 239000011733 molybdenum Substances 0.000 abstract description 2
- 230000009969 flowable effect Effects 0.000 abstract 1
- 239000000654 additive Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 238000011068 loading method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 5
- 239000002199 base oil Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- -1 for example Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920000090 poly(aryl ether) Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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
- C10M151/00—Lubricating compositions characterised by the additive being a macromolecular compound containing sulfur, selenium or tellurium
- C10M151/02—Macromolecular compounds 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
- 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
- C10M119/04—Lubricating compositions characterised by the thickener being a macromolecular compound containing oxygen
- C10M119/14—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C10M119/00—Lubricating compositions characterised by the thickener being a macromolecular compound
- C10M119/26—Lubricating compositions characterised by the thickener being a macromolecular compound containing sulfur
-
- 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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic 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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/22—Compounds containing sulfur, selenium or tellurium
-
- 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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C10M147/00—Lubricating compositions characterised by the additive being a macromolecular compound containing halogen
- C10M147/02—Monomer containing carbon, hydrogen and halogen only
-
- 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
- C10M149/00—Lubricating compositions characterised by the additive being a macromolecular compound containing nitrogen
- C10M149/12—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound 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
- 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
- C10M2201/00—Inorganic compounds or elements 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
- C10M2201/066—Molybdenum sulfide
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/18—Ammonia
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/02—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
-
- 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
-
- 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
- C10M2221/00—Organic macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2221/02—Macromolecular compounds obtained by reactions of monomers involving only carbon-to-carbon unsaturated bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Lubricants (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
A lubricant comprises at least one finely powdered resin selected from aromatic resin and polyimide resin dispersed into a grease or oil. The flowable greases and oils may further contain molybdenum disulfide, organic molybdenum, boron nitride, or PTFE.
Description
SPECIFICATION
Lubricant
The present invention relates to lubricants.
Generally on the sliding surface of machinery, there is usually used greases and oils, for example, oils or waxes. When these greases and oils are used, good lubrication is exhibited on the normal operating conditions. On the other hand, at high temperatures or under heavy loading, the lubricant film can break down causing seizure, or at least a remarkable drop in the efficiency of an engine.
In order to solve such problems it has been proposed to disperse fine powder into the aforementioned greases and oils.
For example, the lubricants have been developed wherein the resin derived from styrene, olefin or isoprene is mixed as a viscosity index improver in addition to finely powdered tetrafluoroethylene resin (polytetrafluoroethylene, hereinafter abbreviated as PTFE) which is one of the hightemperature resistant resins.
In this case, however, the lubricating properties obtained are unsatisfactory when a heavy load is applied on the sliding surface. At high temperatures, 240 C and above in particular, fluorine based gas evolves as a result of thermal decomposition of PTFE. The gas causes corrosion of metal parts, ill effects on humans and moreover public hazards such as atmospheric pollution when PTFE is used for internal combustion engines.
On the other hand, various examinations have been carried out on the dispersed addition of finely powdered ceramics and yet further improvement in performance is desired in a similar manner as above.
The present invention has been carried out in order to meet the aforesaid demand.
The object of this invention is to provide the lubricants which perform stably even at the high temperatures or under the heavy loading and are also excellent in reducing friction.
The present invention is a lubricant which comprises a finely powdered aromatic or polyimide resin dispersed in an oil or grease.
Suitable aromatic resin and polyimide resin which can be used in the practice of this invention include, for example, polycarbonate; polyarylate; polyaryl sulfones such as polysulfone and polyether sulfone; polyaryl ethers such as polyether ketone, polyether-ether ketone and polyetherimide; polyaryl sulfides such as polyphenylene sulfide; and polyimide.
The aromatic resin and polyimide resin which are mentioned above have an average particle size of generally 20 um and less, and preferably 1 um or less. When the particle size exceeds 20 um, the lubricants cannot be obtained which operate stably at the high temperatures and under the heavy loading. The powdered aromatic resin and/or the powdered polyimide resin are used in an amount of 0.001 to 50% by weight of the greases and oils. The amount above 50% by weight is meaningless because it causes the viscosity of the greases and oils only to rise.
The greases and oils which can be utilized in this invention are any materials actually used as the lubricants. The materials include usually known oils and waxes, and further include those with known additives such as, for example, boron nitride and molybdenum disulfide.
In order to prepare the lubricants of this invention, the aforementioned powdered resin is uniformly dispersed into the greases and oils with stirring at room temperature or at a temperature up to 200 C. The time required for the stirring is usually from 1 to 60 minutes. The resulting uniform dispersion is stable even after being allowed to stand at room temperature and can be used as the lubricant as it is.
As another method, the dispersion may also be prepared by grinding the above-mentioned resin in the greases and oils. Any usually known grinding machine may be utilized for the pulverization of the resin. The temperature during the pulverization is preferably from the room temperature to 200 C. The time required for the grinding is suitably adjusted depending on the desired particle size.
When the greases and oils contain fine powder or liquid of known additives, for example, aforesaid PTFE, boron nitride, molybdenum disulfide and organic molybdenum, the amount of the aforesaid resin to be added is restricted so that the total quantity of powdery resin and additives is up to 50% by weight of the greases and oils. This is because the increased amount of addition leads to an unfavourable viscosity rise of the resulting lubricant.
When two kinds of the aforesaid resin or one of the aforesaid resin with a known additive, are simultaneously added to greases and oils, the weight ratio of these two ingredients is from 40:1 to 1:40. Outside of this range, the effect approaches to the case of single addition and the effect of combined addition is decreased.
As the method for dispersing the plural fine powder into the greases and oils, they may be simultaneously powdered in the greases and oils, or may be separately ground and then mixed.
Optionally further pulverization may be permitted after mixing.
Any usually known grinding machines may be employed for the pulverization of the resin and additives. The pulverization is carried out in the range of room temperature to 200 C. The time required for the grinding may suitably be adjusted depending on the desired particle size.
In the so called master-batch process, a high concentration of the finely powdered resin and additives in the greases and oils is prepared and then diluted to a proper concentration by mixing with the greases and oils when needed. The lubricant having the high concentration of finely ground resin and additives for use in such master-batch process is also included in the scope of this invention. In addition, the lubricant of this invention may also be used as grease by kneading with metal soaps.
Brief Description of the Drawing
The lubricant of the present invention is compared in Fig. 1 with the additive-free fluid oil (base oil) and the lubricant added with known finely powdered additives. The performance is illustrated as a graph indicating the relationship between load and friction coefficient.
Examples
The examples of this invention will be illustrated in comparison with conventional technology.
Machine oil having a viscosity of 100 cst was used as the base oil.
The base oil was uniformly dispersed with the following resin and additives in the form of fine powder having an average particle size of 1 ,um. The friction coefficient was measured at temperature of 400C under a load of 20 to 50 kg.
The results are illustrated in Fig. 1 by plotting the load [W] kg and its inverse number [ 1/W ] as abscissa, and the friction coefficient as ordinate.
Sample Additive Amount*
00 None
01 Molybdenum disulfide 1.0
02 Boron nitride 1.0
03 Tetrafluoroethylene resin 1.0
10 Polyetherether ketone 1.0
11 Molybdenum disulfide 0.5
Polyetherether ketone 0.5
12 Boron nitride 0.5
Polyetherether ketone 0.5
Note: * parts by weight per 100 parts by weight of base oil.
As clearly shown in Fig. 1, the lubricants (01 and 03) containing tetrafluoroethylene resin and molybdenum disulfide which are known additives generated seizing under the load exceeding 40 kg and the friction coefficient rose up suddenly.
On the other hand, no seizing phenomenon was found on the lubricant (10) of the present invention wherein polyetherether ketone was used singly. The same effect was also found on the lubricants (11 and 12) of this invention wherein a half quantity of the known additives causing seizure as above was replaced by polyetherether ketone. Moreover any of these lubricants of this invention exhibited superior lubricating properties under each load to the lubricant (02) containing boron nitride which was a known ceramic additive.
The lubricants of this invention are effective for decreasing the friction coefficient on the greases and oils used conventionally. In addition no troubles such as seizing are found on the application at the high temperatures and under the heavy loading.
Therefore the lubricants of this invention are used for members of the internal combustion engines or differential gears which are subjected to the heavy loading or a high speed rotation.
Thus the lubricants are very valuable for industrial application.
The lubricants of the present invention may be added with other additives so long as the effect of the lubricants is unharmed in this invention.
Claims (6)
1. A lubricant which comprises a finely powdered aromatic of polyimide resin dispersed in oil or grease.
2. A lubricant as claimed in claim 1, wherein said resin is one of the following:polyphenylene sulfide, polycarbonate, polysulfone, polyetherimide, polyether ketone, polyetherether ketone, polyethersulfone, polyarylate, and polyimide.
3. A lubricant as claimed in claim 1, wherein said resin is polyetherehter ketone.
4. A lubricant as claimed in claim 3, further containing molybdenum disulfide.
5. A lubricant as claimed in claim 3, further containing boron nitride.
6. A lubricant as claimed in claim 1 and substantially as hereinbefore described with reference to the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61166576A JPS6323994A (en) | 1986-07-17 | 1986-07-17 | Lubricant |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8715993D0 GB8715993D0 (en) | 1987-08-12 |
| GB2192896A true GB2192896A (en) | 1988-01-27 |
| GB2192896B GB2192896B (en) | 1990-07-04 |
Family
ID=15833828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8715993A Expired - Fee Related GB2192896B (en) | 1986-07-17 | 1987-07-07 | Lubricant |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS6323994A (en) |
| FR (1) | FR2601686B1 (en) |
| GB (1) | GB2192896B (en) |
| IT (1) | IT1222029B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112094681B (en) * | 2020-08-20 | 2022-10-11 | 安徽绿环泵业有限公司 | Preparation method of lubricating sealing filler for corrosion-resistant pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1376835A (en) * | 1971-07-12 | 1974-12-11 | Texaco Development Corp | Water-resistant greases |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE464059A (en) * | 1942-04-02 | |||
| US2652368A (en) * | 1949-06-21 | 1953-09-15 | Shell Dev | Lubricating oil composition |
| US3008899A (en) * | 1959-12-02 | 1961-11-14 | California Research Corp | Formolite resin-epoxy resin grease compositions |
| US3285850A (en) * | 1964-02-13 | 1966-11-15 | Phillips Petroleum Co | Solid film lubricants |
| US3729415A (en) * | 1964-04-28 | 1973-04-24 | Ferri J | Lubricating composition |
| US3426075A (en) * | 1964-07-01 | 1969-02-04 | Monsanto Co | Mixed polyphenyl ethers-thioethers |
| US3630897A (en) * | 1969-10-06 | 1971-12-28 | Phillips Petroleum Co | Color stabilization of lubricating compositions |
| US3773667A (en) * | 1971-09-20 | 1973-11-20 | Standard Oil Co | Greases thickened with aromatic polyamide-imides and poly-4-phthalimide |
| US3882030A (en) * | 1974-02-15 | 1975-05-06 | Phillips Petroleum Co | Self-lubricating bearing elements |
| US4211662A (en) * | 1978-06-06 | 1980-07-08 | Pennwalt Corporation | Synergistic lubricating compositions |
| ZA84247B (en) * | 1983-02-18 | 1984-09-26 | Lonza Ag | Parting and lubricating agent in solid form |
-
1986
- 1986-07-17 JP JP61166576A patent/JPS6323994A/en active Pending
-
1987
- 1987-07-07 GB GB8715993A patent/GB2192896B/en not_active Expired - Fee Related
- 1987-07-14 IT IT21274/87A patent/IT1222029B/en active
- 1987-07-16 FR FR878710037A patent/FR2601686B1/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1376835A (en) * | 1971-07-12 | 1974-12-11 | Texaco Development Corp | Water-resistant greases |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8715993D0 (en) | 1987-08-12 |
| GB2192896B (en) | 1990-07-04 |
| FR2601686B1 (en) | 1990-04-06 |
| JPS6323994A (en) | 1988-02-01 |
| FR2601686A1 (en) | 1988-01-22 |
| IT8721274A0 (en) | 1987-07-14 |
| IT1222029B (en) | 1990-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |