CN111979025A - Lubricating oil with protection effect for wear-resistant and rust-proof bearing and preparation method thereof - Google Patents
Lubricating oil with protection effect for wear-resistant and rust-proof bearing and preparation method thereof Download PDFInfo
- Publication number
- CN111979025A CN111979025A CN202010852044.2A CN202010852044A CN111979025A CN 111979025 A CN111979025 A CN 111979025A CN 202010852044 A CN202010852044 A CN 202010852044A CN 111979025 A CN111979025 A CN 111979025A
- Authority
- CN
- China
- Prior art keywords
- oil
- portions
- lubricating oil
- wear
- mixture
- 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
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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular 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
- C10M2201/04—Elements
- C10M2201/05—Metals; Alloys
-
- 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
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- 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
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two 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
- C10M2207/28—Esters
- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic 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
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/401—Fatty vegetable or animal oils used as base 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
- 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
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
- C10M2209/1045—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only used as base 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
- 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
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
- C10M2209/1095—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified used as base 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
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
- C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
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
The invention discloses lubricating oil with a protection effect for an anti-wear and anti-rust bearing and a preparation method thereof, wherein the lubricating oil comprises the following components in parts by weight: 100 portions of modified base oil, 5 to 6 portions of anti-corrosion antirust agent, 8 to 9 portions of chlorinated paraffin, 5 to 7 portions of succinate, 1 to 3 portions of beta-sitosterol, 5 to 7 portions of viscosity regulator and 0.1 to 1 portion of nano copper powder, thereby reducing the abrasion, forming a repairing layer with stable structure and excellent bearing capacity on the surface of a friction pair, and playing the effects of resisting wear and reducing friction; the chlorinated paraffin can reduce friction, improve wear resistance and the like.
Description
Technical Field
The invention relates to the technical field of bearing lubricating oil, in particular to lubricating oil for an anti-wear and anti-rust bearing with a protection effect and a preparation method thereof.
Background
The bearing lubricating oil is used on the bearing and has the functions of lubricating, cooling, resisting pressure, prolonging the service life of the bearing and the like, and the lubricating oil generally consists of base oil and an additive. The base oil is the main component of the lubricating oil, determines the basic properties of the lubricating oil, and the additive can make up and improve the deficiency in the performance of the base oil, endows certain new performances and is an important component of the lubricating oil.
Along with the development of industrial manufacturing, the requirements on the bearing are higher and higher, the bearing material is required to be environment-friendly and safe and does not contain harmful components, the bearing material has high strength, and meanwhile, the bearing can adapt to different environments and working conditions and has the capabilities of resisting stress corrosion and chemical corrosion. In addition to the material of the bearing, the performance requirements of the lubricating oil required for the use of the bearing are also increasing.
However, the existing lubricating oil has many defects, such as insufficient lubricity, incapability of playing a role in rust prevention on bearings, easy denaturation under high temperature, reduced wear resistance, poor stability and the like.
Disclosure of Invention
The invention aims to provide lubricating oil for an anti-wear and anti-rust bearing with a protection effect and a preparation method thereof, and overcomes the defects in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a lubricating oil with a protection effect for an anti-wear and anti-rust bearing comprises the following components in parts by weight: 100 portions of modified base oil, 110 portions of anticorrosive antirust agent, 5-6 portions of chlorinated paraffin, 8-9 portions of succinate, 1-3 portions of beta-sitosterol, 5-7 portions of viscosity regulator and 0.1-1 portion of nano copper powder.
Preferably, the modified base oil comprises the following components in parts by weight: 20-30 parts of mineral base oil, 5-10 parts of vegetable oil, 5-10 parts of polyhydric alcohol, 0.01-0.1 part of rare earth carbonate and 0.6-1 part of methoxy polyethylene glycol methacrylate.
Preferably, the preparation method of the modified base oil comprises the following steps: mixing mineral base oil, vegetable oil and polyol according to a molar ratio of 1 (0.4-0.7) to (0.2-0.5), adding into a reaction kettle, heating to 168 ℃, and preserving heat for 50 minutes; adding the rare earth carbonate and the methoxypolyethylene glycol methacrylate into a reaction kettle in the first step, uniformly stirring, keeping the temperature at 178 ℃ for 50 minutes, naturally cooling to room temperature, and standing for 3 days in a sealed manner at room temperature.
Preferably, the vegetable oil is one single component or a mixture of multiple components in any proportion in oxidized rapeseed oil, sunflower oil, soybean oil, castor oil, cottonseed oil and palm oil.
Preferably, the polyhydric alcohol is any single component or a mixture of two components in any proportion in trimethylolpropane and pentaerythritol.
Preferably, the nanometer copper powder is pretreated by the following steps: placing copper powder in a ball milling tank, and mixing the copper powder at a low speed for a period of time in an argon atmosphere to obtain nano copper powder; uniformly mixing the copper nanoparticles with an acid solution or an alkali solution which is 5 times of the copper nanoparticles in mass, grinding the mixture at a low speed for 40 minutes at 88 ℃, and filtering the mixture.
A preparation method of lubricating oil for an anti-wear and anti-rust bearing with a protection effect comprises the following steps:
1): stirring the modified base oil, the anticorrosive antirust agent, the chlorinated paraffin, the succinate and the beta-sitosterol for 45 minutes at 72 ℃ to obtain a first mixture;
4): adding a viscosity regulator and the nano copper powder into the first mixture, continuing stirring at 55 ℃, and recovering to normal temperature after 2.5 hours to obtain a second mixture;
5): filling the second mixture; standing at room temperature for 10-20 days.
Compared with the prior art, the invention has the beneficial effects that:
the lubricating oil has good lubricating effect, can be suitable for most application occasions, not only can greatly improve the rust resistance of the lubricating oil, but also can improve the lubricating effect of the lubricating oil, has low pour point, does not change the friction coefficient too much at high temperature, has strong stability and low cost; secondly, the abrasion is reduced, and a repairing layer with stable structure and excellent bearing capacity can be formed on the surface of the friction pair, so that the effects of abrasion resistance and friction reduction are achieved; the chlorinated paraffin can reduce friction, improve wear resistance and the like.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a lubricating oil with a protection effect for an anti-wear and anti-rust bearing comprises the following components in parts by weight: 100 parts of modified base oil, 5 parts of anticorrosive and antirust agent, 9 parts of chlorinated paraffin, 5 parts of succinate, 2 parts of beta-sitosterol, 6 parts of viscosity regulator and 0.5 part of nano copper powder.
The modified base oil comprises the following components in parts by weight: 25 parts of mineral base oil, 9 parts of vegetable oil, 5 parts of polyol, 0.02 part of rare earth carbonate and 0.7 part of methoxy polyethylene glycol methacrylate. The preparation method of the modified base oil comprises the following steps: mixing mineral base oil, vegetable oil and polyol according to a molar ratio of 1:0.7:0.3, adding into a reaction kettle, heating to 168 ℃, and preserving heat for 50 minutes; adding the rare earth carbonate and the methoxypolyethylene glycol methacrylate into a reaction kettle in the first step, uniformly stirring, keeping the temperature at 178 ℃ for 50 minutes, naturally cooling to room temperature, and standing for 3 days in a sealed manner at room temperature.
The vegetable oil is one or more of oxidized rapeseed oil, sunflower oil, soybean oil, castor oil, cottonseed oil and palm oil, and is a mixture of the components in any proportion. The polyalcohol is any single component or a mixture of two components in trimethylolpropane and pentaerythritol in any proportion.
The nanometer copper powder is pretreated: placing copper powder in a ball milling tank, and mixing the copper powder at a low speed for a period of time in an argon atmosphere to obtain nano copper powder; uniformly mixing the copper nanoparticles with an acid solution or an alkali solution which is 5 times of the copper nanoparticles in mass, grinding the mixture at a low speed for 40 minutes at 88 ℃, and filtering the mixture.
A preparation method of lubricating oil for an anti-wear and anti-rust bearing with a protection effect comprises the following steps:
1): stirring the modified base oil, the anticorrosive antirust agent, the chlorinated paraffin, the succinate and the beta-sitosterol for 45 minutes at 72 ℃ to obtain a first mixture;
6): adding a viscosity regulator and the nano copper powder into the first mixture, continuing stirring at 55 ℃, and recovering to normal temperature after 2.5 hours to obtain a second mixture;
7): filling the second mixture; standing at room temperature for 10-20 days.
The technical parameters of the prepared lubricating oil are as follows: the flash point reaches 238 degrees; the viscosity index is 105-125, and the acid value is 0.09-1.12 mgKOH/g.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a lubricating oil for antifriction rust-resistant bearing that possesses protecting effect which characterized in that: comprises the following components in parts by weight: 100 portions of modified base oil, 110 portions of anticorrosive antirust agent, 5-6 portions of chlorinated paraffin, 8-9 portions of succinate, 1-3 portions of beta-sitosterol, 5-7 portions of viscosity regulator and 0.1-1 portion of nano copper powder.
2. The lubricating oil for an anti-wear and anti-rust bearing having a protective effect according to claim 1, characterized in that: the modified base oil comprises the following components in parts by weight: 20-30 parts of mineral base oil, 5-10 parts of vegetable oil, 5-10 parts of polyhydric alcohol, 0.01-0.1 part of rare earth carbonate and 0.6-1 part of methoxy polyethylene glycol methacrylate.
3. The lubricating oil for an anti-wear and anti-rust bearing having a protective effect according to claim 2, characterized in that: the preparation method of the modified base oil comprises the following steps: mixing mineral base oil, vegetable oil and polyol according to a molar ratio of 1 (0.4-0.7) to (0.2-0.5), adding into a reaction kettle, heating to 168 ℃, and preserving heat for 50 minutes; adding the rare earth carbonate and the methoxypolyethylene glycol methacrylate into a reaction kettle in the first step, uniformly stirring, keeping the temperature at 178 ℃ for 50 minutes, naturally cooling to room temperature, and standing for 3 days in a sealed manner at room temperature.
4. The lubricating oil for an anti-wear and anti-rust bearing having a protective effect according to claim 2, characterized in that: the vegetable oil is one or more of oxidized rapeseed oil, sunflower oil, soybean oil, castor oil, cottonseed oil and palm oil, and is a mixture of the components in any proportion.
5. The lubricating oil for an anti-wear and anti-rust bearing having a protective effect according to claim 2, characterized in that: the polyalcohol is any single component or a mixture of two components in trimethylolpropane and pentaerythritol in any proportion.
6. The lubricating oil for an anti-wear and anti-rust bearing having a protective effect according to claim 1, characterized in that: the nanometer copper powder is pretreated: placing copper powder in a ball milling tank, and mixing the copper powder at a low speed for a period of time in an argon atmosphere to obtain nano copper powder; uniformly mixing the copper nanoparticles with an acid solution or an alkali solution which is 5 times of the copper nanoparticles in mass, grinding the mixture at a low speed for 40 minutes at 88 ℃, and filtering the mixture.
7. A preparation method of lubricating oil for an anti-wear and anti-rust bearing with a protection effect comprises the following steps:
1): stirring the modified base oil, the anticorrosive antirust agent, the chlorinated paraffin, the succinate and the beta-sitosterol for 45 minutes at 72 ℃ to obtain a first mixture;
2): adding a viscosity regulator and the nano copper powder into the first mixture, continuing stirring at 55 ℃, and recovering to normal temperature after 2.5 hours to obtain a second mixture;
3): filling the second mixture; standing at room temperature for 10-20 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010852044.2A CN111979025A (en) | 2020-08-21 | 2020-08-21 | Lubricating oil with protection effect for wear-resistant and rust-proof bearing and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010852044.2A CN111979025A (en) | 2020-08-21 | 2020-08-21 | Lubricating oil with protection effect for wear-resistant and rust-proof bearing and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111979025A true CN111979025A (en) | 2020-11-24 |
Family
ID=73443227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010852044.2A Pending CN111979025A (en) | 2020-08-21 | 2020-08-21 | Lubricating oil with protection effect for wear-resistant and rust-proof bearing and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111979025A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684428A (en) * | 2008-09-23 | 2010-03-31 | 上海德通能源环保科技有限公司 | Nano copper antiwear lubricating oil additive |
| CN106167730A (en) * | 2016-07-13 | 2016-11-30 | 蚌埠市华科机电有限责任公司 | A kind of environmental protection wearproof lubricant |
| CN106190476A (en) * | 2016-07-13 | 2016-12-07 | 蚌埠市华科机电有限责任公司 | A kind of bearing oil |
| CN106221871A (en) * | 2016-07-13 | 2016-12-14 | 蚌埠市华科机电有限责任公司 | A kind of lubricant for gears |
| CN108409823A (en) * | 2018-03-12 | 2018-08-17 | 山西潞安煤基合成油有限公司 | A kind of cholesterine lipoid substance and preparation method and application |
-
2020
- 2020-08-21 CN CN202010852044.2A patent/CN111979025A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684428A (en) * | 2008-09-23 | 2010-03-31 | 上海德通能源环保科技有限公司 | Nano copper antiwear lubricating oil additive |
| CN106167730A (en) * | 2016-07-13 | 2016-11-30 | 蚌埠市华科机电有限责任公司 | A kind of environmental protection wearproof lubricant |
| CN106190476A (en) * | 2016-07-13 | 2016-12-07 | 蚌埠市华科机电有限责任公司 | A kind of bearing oil |
| CN106221871A (en) * | 2016-07-13 | 2016-12-14 | 蚌埠市华科机电有限责任公司 | A kind of lubricant for gears |
| CN108409823A (en) * | 2018-03-12 | 2018-08-17 | 山西潞安煤基合成油有限公司 | A kind of cholesterine lipoid substance and preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102703175B (en) | Long lifetime wind-powered electricity generation fluorenone | |
| CN101838580B (en) | Compound lithium base grease composite and preparation method thereof | |
| CN103602376B (en) | A kind of Composite nanometer antiwear agent and preparation method thereof | |
| CN111378520B (en) | MoS-containing 2 Water-soluble trace lubricating fluid | |
| CN106398832A (en) | Grease for pitch bearing of fan and preparation method thereof | |
| CN103409208A (en) | Blower main shaft bearing lubricating grease and preparation method thereof | |
| CN112522019A (en) | Lubricating grease composition for bearing of fan generator and preparation method thereof | |
| CN112940836B (en) | High-dispersity nano molybdenum disulfide water-based rolling liquid and preparation method thereof | |
| CN103710116A (en) | Coating material for preventing engine crankshaft from being locked, and preparation method and application method of coating material | |
| CN102827677A (en) | Ashless lubricating grease composition and preparation method thereof | |
| CN108865339B (en) | Lubricating grease composition for axle box bearing of high-speed motor train unit and preparation method thereof | |
| CN111073733B (en) | Fretting wear resistant fan spindle bearing lubricating grease and preparation method thereof | |
| CN111979025A (en) | Lubricating oil with protection effect for wear-resistant and rust-proof bearing and preparation method thereof | |
| CN111303971B (en) | Sulfur-free phosphorus-chlorine cutting oil and preparation method and application thereof | |
| CN113621430B (en) | Anti-micro-pitting wind power gear oil and preparation method thereof | |
| CN115058270B (en) | Degradable wheel rail antifriction film forming paste and preparation method thereof | |
| CN102952616A (en) | High temperature high speed oil film bearing oil | |
| CN109536250B (en) | Environment-friendly degradable aluminum and aluminum alloy drawing process lubricant and preparation method thereof | |
| CN111500350A (en) | Automobile bearing lubricating grease and preparation method thereof | |
| CN107384515B (en) | Lubricating oil extreme pressure antiwear agent and preparation method thereof | |
| CN115433620A (en) | Lubricating oil and lubricating oil preparation method | |
| CN104031717B (en) | A kind of aluminium nitride and copper mixing nanometer lubricating grease additive and application thereof | |
| CN111019745B (en) | MoS-containing 2 Water insoluble trace amount of lubricating fluid | |
| CN102766511A (en) | Composite calcium sulfonate-titanium composite lubricating grease and preparation method thereof | |
| CN105754686A (en) | Leak-proof nano lubricating oil and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201124 |
|
| RJ01 | Rejection of invention patent application after publication |