CN111718782A - Clean long-life hydraulic oil - Google Patents
Clean long-life hydraulic oil Download PDFInfo
- Publication number
- CN111718782A CN111718782A CN202010330988.3A CN202010330988A CN111718782A CN 111718782 A CN111718782 A CN 111718782A CN 202010330988 A CN202010330988 A CN 202010330988A CN 111718782 A CN111718782 A CN 111718782A
- Authority
- CN
- China
- Prior art keywords
- parts
- weight
- hydraulic oil
- life
- defoaming agent
- 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
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions 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
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
-
- 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
- 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
-
- 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
- C10M2223/047—Thioderivatives not containing metallic elements
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 clean long-life hydraulic oil which comprises the following raw materials in parts by weight; group II hydrogenated base oils: 83-97 parts of defoaming agent: 0.1-1.5 parts of pour point depressant: 0.1-1.5 parts of demulsifier: 0.1-1.5 parts of a viscosity index improver: 1-6 parts of liquid mixed shielding phenol: 0.1-1 part of liquid diarylamine: 0.1-1 part of alkyl dithiophosphate: 0.1-1 part of alkylene succinate: 0.01-0.1 part of phosphate ester: 0.01-0.1 part of synthetic calcium petroleum sulfonate: 0.01-0.1 part of detergent LZ 6786: 1-3 parts. The invention aims to solve the problems that the service life of hydraulic oil in the existing hydraulic system is short due to the fact that the existing hydraulic system works under higher pressure, and cost is increased due to frequent replacement of the hydraulic oil.
Description
Technical Field
The invention relates to a lubricating oil composition, in particular to a clean long-life hydraulic oil.
Background
With the development of industrial technology, a hydraulic system starts to use a high-performance pump to provide higher pressure and system efficiency, so that the pressure of the hydraulic system is increased sharply, the traditional hydraulic oil cannot provide sufficient lubrication protection for hydraulic system components in an ultrahigh-pressure hydraulic system, the abrasion of a plunger and a plunger cylinder inner cavity of the hydraulic pump is easily caused, the temperature of the hydraulic system is also increased sharply, the oxidation of the hydraulic oil is accelerated, the service life is shortened, the oxidation life of the traditional hydraulic oil TOST (transmitter optical transmitter) on the market is mainly about 2000 hours at present, the oil change index is reached soon after the system operates, the hydraulic oil must be changed at this moment, and the enterprise cost is increased.
Disclosure of Invention
Aiming at the problems, the invention provides clean hydraulic oil with long service life, aiming at solving the problems that the service life of the hydraulic oil is short, the cost is increased due to frequent replacement of the hydraulic oil and the like caused by the fact that the existing hydraulic system works under higher pressure.
The invention adopts the following technical scheme to realize the purpose:
a clean type long-life hydraulic oil comprises the following raw materials in parts by weight;
group II hydrogenated base oils: 83 to 97 parts by weight of a stabilizer,
defoaming agent: 0.1 to 1.5 parts by weight,
pour point depressant: 0.1 to 1.5 parts by weight,
a demulsifier: 0.1 to 1.5 parts by weight,
viscosity index improver: 1 to 6 parts of (A) a water-soluble polymer,
liquid mixed shielding phenol: 0.1 to 1 part by weight of a surfactant,
liquid diarylamine: 0.1 to 1 part by weight of a surfactant,
alkyl dithiophosphates: 0.1 to 1 part by weight of a surfactant,
alkylene succinates: 0.01 to 0.1 part by weight,
phosphate ester: 0.01 to 0.1 part by weight,
synthesizing calcium petroleum sulfonate: 0.01 to 0.1 part by weight,
detergent LZ 6786: 1-3 parts.
Further, the defoaming agent is a silicon-containing or/and non-silicon type defoaming agent. The components have strong defoaming force and small using amount; and the addition to the foaming system does not affect the basic properties of the system.
Further, the demulsifier is a copolymer of ethylene oxide and propylene oxide. The oil and the water in the oil-water mixed liquid in the hydraulic oil can be separated.
Further, the pour point depressant is polymethacrylate. Therefore, the freezing point of the hydraulic oil can be reduced, and the low-temperature fluidity of the hydraulic oil can be improved.
In the invention, the shielding phenol is used as an antioxidant, the oil temperature of the hydraulic oil is between 30 and 80 ℃ under normal conditions, and the shielding phenol has good biodegradability.
In the invention, the diarylamine is added and used as a high-temperature antioxidant in the lubricating oil, so that the effect of prolonging the induction period and inhibiting the late oxidation of oil products is good.
The present invention prepares long-chain carbon phosphate through adding phosphate and catalytic esterification, and the long-chain carbon phosphate is widely recognized as effective ash-free antiwear additive and medium extreme pressure additive. The friction and the abrasion under the boundary lubrication condition caused by high load are reduced, the service life of equipment is prolonged, the loss of a cutter is reduced, and the energy consumption is reduced.
The detergent LZ6786 is added and matched with mineral-based lubricating oil, so that paint film accumulation and oil sludge can be removed, filter element replacement caused by paint films is reduced, the production efficiency is improved, the equipment downtime is greatly reduced, and health and potential safety hazards possibly caused by the use of solvent-based detergents are reduced.
The invention has the beneficial effects that:
1. according to the clean long-life hydraulic oil provided by the invention, the TOST oxidation life can reach more than 8000h, which is far higher than 2000h of other hydraulic oil on the market, so that the replacement frequency of the hydraulic oil is reduced, and the cost of an enterprise is saved;
2. compared with the conventional hydraulic oil, the clean long-life hydraulic oil provided by the invention can effectively remove oil films and paint films on the surfaces of machines and better protect the machines.
Detailed Description
In order that the invention may be more clearly understood, the following description is given with reference to specific embodiments, but the invention may also be carried out in other ways than those described herein, and the following examples are not intended to limit the scope of the invention.
The following are experimental data comparisons made with other hydraulic fluids in accordance with embodiments of the present invention:
the experimental method adopts ASTM D943 (Standard test method for Oxidation resistance of mineral oil), and comprises the following steps: the method comprises the steps of catalyzing 300mL of oil with iron wires and copper wires, introducing water and oxygen, carrying out an experiment under an oil bath at 95 ℃, taking 3mL every 168h after 500h to measure the acid value, sampling every 500 +/-25 h after the test time reaches 3000h, stopping the test when the measured acid value is equal to or more than 2.0mgKOH/g, and finally, taking the total time as the value of the oxidation life of TOST. The following examples all employ the above-described method.
Example 1
Group II hydrogenated base oils: 83 parts, defoaming agent: 0.1 part of pour point depressant: 0.1 part, demulsifier: 0.1 part, viscosity index improver: 1 part, liquid mixed shielding phenol: 0.1 part, liquid diarylamine: 0.1 part, alkyl dithiophosphate: 0.1 part, alkylene succinate: 0.01 part, phosphate ester: 0.01 part, synthetic calcium petroleum sulfonate: 0.01 part, detergent LZ 6786: 1 part. The preparation process comprises the following steps: the components are mixed according to the proportion, then the mixture is added into a blending kettle and stirred uniformly, and then the temperature of the blending kettle is controlled to be 55 ℃ and the mixture is stirred for 2 hours at the same time, so that the long-life hydraulic oil is obtained.
Example 2
Group II hydrogenated base oils: 90 parts, defoaming agent: 0.8 part of pour point depressant: 0.8 part, demulsifier: 0.8 part, viscosity index improver: 3 parts of liquid mixed shielding phenol: 0.5 part, liquid diarylamine: 0.5 part, alkyl dithiophosphate: 0.5 part, alkylene succinate: 0.05 part, phosphate ester: 0.05 part, synthetic calcium petroleum sulfonate: 0.05 part, detergent LZ 6786: and 2 parts. The preparation process comprises the following steps: the components are mixed according to the proportion, then the mixture is added into a blending kettle and stirred uniformly, and then the temperature of the blending kettle is controlled to be 55 ℃ and the mixture is stirred for 2 hours at the same time, so that the long-life hydraulic oil is obtained.
Example 3
Group II hydrogenated base oils: 97 parts, defoaming agent: 1.5 parts of pour point depressant: 1.5 parts, demulsifier: 1.5 parts of viscosity index improver: 6 parts of liquid mixed shielding phenol: 1 part, liquid diarylamine: 1 part, alkyl dithiophosphate: 1 part, alkylene succinate: 0.1 part, phosphate ester: 0.1 part, synthetic calcium petroleum sulfonate: 0.1 part, detergent LZ 6786: and 3 parts. The preparation process comprises the following steps: the components are mixed according to the proportion, then the mixture is added into a blending kettle and stirred uniformly, and then the temperature of the blending kettle is controlled to be 55 ℃ and the mixture is stirred for 2 hours at the same time, so that the long-life hydraulic oil is obtained.
Comparative example 1
The hydraulic oil in comparative example 1 comprises the following raw material components in parts by weight: 83 parts of II-type hydrogenated base oil, 0.1 part of defoaming agent, 0.1 part of pour point depressant, 0.1 part of demulsifier, 1 part of viscosity index improver, 0.03 part of liquid mixed shielding phenol, 0.02 part of liquid diarylamine, 0.1 part of alkyl dithiophosphate, 0.1 part of alkylene succinate, 0.001 part of phosphate, 0.01 part of synthetic calcium petroleum sulfonate and 67860.1 parts of detergent LZ. The preparation process comprises the following steps: adding the components into a blending kettle according to the proportion, uniformly stirring to obtain a mixed solution, controlling the temperature of the blending kettle to be 55 ℃, and simultaneously stirring the mixed solution for 2 hours to obtain the hydraulic oil.
Comparative example 2
The preparation process of the comparative example is the same as that of the comparative example 1, and the raw material components in parts by weight are as follows: 83 parts of II-type hydrogenated base oil, 0.1 part of defoaming agent, 0.1 part of pour point depressant, 0.1 part of demulsifier, 1 part of viscosity index improver, 0.1 part of liquid diarylamine, 0.1 part of alkyl dithiophosphate, 0.01 part of alkylene succinate, 0.01 part of phosphate, 0.01 part of synthetic calcium petroleum sulfonate and 67861 parts of detergent LZ.
Comparative example 3
The preparation process of the comparative example is the same as that of the comparative example 1, wherein the raw material components in parts by weight are as follows: 83 parts of II-type hydrogenated base oil, 0.1 part of defoaming agent, 0.1 part of pour point depressant, 0.1 part of demulsifier, 1 part of viscosity index improver, 0.1 part of alkyl dithiophosphate, 0.01 part of alkylene succinate, 0.01 part of phosphate ester, 0.01 part of synthetic calcium petroleum sulfonate and 67861 parts of detergent LZ.
Comparative example 4
The preparation process of the comparative example is the same as that of the comparative example 1, wherein the raw material components in parts by weight are as follows: 83 parts of II-type hydrogenated base oil, 0.1 part of defoaming agent, 0.1 part of pour point depressant, 0.1 part of demulsifier, 1 part of viscosity index improver, 0.1 part of alkyl dithiophosphate, 0.01 part of alkylene succinate, 0.01 part of synthetic calcium petroleum sulfonate and 67861 parts of detergent LZ.
Comparative example 5
The preparation process of the comparative example is the same as that of the comparative example 1, wherein the raw material components in parts by weight are as follows: 83 parts of II-type hydrogenated base oil, 0.1 part of defoaming agent, 0.1 part of pour point depressant, 0.1 part of demulsifier, 1 part of viscosity index improver, 0.1 part of alkyl dithiophosphate, 0.01 part of alkylene succinate, 0.01 part of phosphate and 0.01 part of synthetic calcium petroleum sulfonate.
Comparative example 6
The preparation process of the comparative example is the same as that of the comparative example 1, wherein the raw material components in parts by weight are as follows: 90 parts of II-type hydrogenated base oil, 0.8 part of defoaming agent, 0.8 part of pour point depressant, 0.8 part of demulsifier, 3 parts of viscosity index improver, 0.5 part of 2, 6-di-tert-butyl-p-cresol, 0.5 part of liquid diarylamine, 0.5 part of alkyl dithiophosphate, 0.05 part of alkylene succinate, 0.05 part of phosphate, 0.05 part of synthetic calcium petroleum sulfonate and 67862 parts of detergent LZ.
The following are experimental data comparing long-life hydraulic oil of the examples of the present invention with hydraulic oil of the comparative examples:
as can be seen from the above table, the oxidation life of the experimental TOST is more than 8000 hours in the range of the scheme of the invention for each raw material component in the examples 1-3; in the comparative example 1, the raw materials are the same as those in the scheme, but the components are not in the scope of the scheme of the invention, so that the oxidation life of TOST is greatly reduced and only reaches 5000 hours; in the case that the liquid mixed shielding phenol is not added and other components are the same as the liquid mixed shielding phenol in the scheme, the TOST oxidation life is only 5000 hours, and the liquid mixed shielding phenol has a great influence on the service life of the hydraulic oil; in the comparative example 3, the liquid mixed shielding phenol and the liquid diarylamine are not added into the raw materials, and under the condition that other components are the same as those in the scheme, the TOST oxidation life is only 2516 hours, so that the liquid diarylamine serving as an antioxidant has an influence on the service life extension of the hydraulic oil; compared with the prior art, the liquid mixed shielding phenol, the liquid diarylamine and the phosphate ester are not added into the raw materials of the comparative example 4, the TOST oxidation life is less than 2180 hours, and the phosphate ester is used as an antiwear agent and has an effect on prolonging the service life of hydraulic oil; in the comparative example 5, the liquid mixed shielding phenol, the liquid diarylamine, the phosphate and the detergent LZ6786 are not added into the raw materials, the sludge amount is 135, which is higher than that of other examples and comparative examples, and the detergent LZ6786 has a remarkable effect on the cleaning property of the hydraulic oil; in comparative example 6, the common antioxidant 2, 6-di-tert-butyl-p-cresol is adopted to replace the liquid mixed shielding phenol, the components and the proportion of other raw materials are the same as those in the example, the TOST oxidation life is only 3000 hours, and the liquid mixed shielding phenol has great influence on the service life of the hydraulic oil.
Therefore, the analysis proves that the combined components of the liquid mixed shielding phenol, the liquid diarylamine and the phosphate ester added into the clean long-life hydraulic oil provided by the invention can obviously prolong the service life of the hydraulic oil, so that the TOST (transmitter optical transmit temperature) oxidation life of the clean long-life hydraulic oil provided by the invention reaches more than 8000h, which is far higher than the service life of other hydraulic oil on the market, thereby reducing the replacement frequency of the hydraulic oil, saving the cost of an enterprise, reducing the machine downtime, reducing the frequency of replacing the hydraulic oil and reducing the cost of the enterprise; meanwhile, the added detergent LZ6786 can effectively remove oil films and paint films on the surface of the machine and better protect the machine.
The invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, but it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention as claimed, without departing from the spirit of the invention.
Claims (4)
1. A clean type long-life hydraulic oil is characterized by comprising the following raw materials in parts by weight;
group II hydrogenated base oils: 83 to 97 parts by weight of a stabilizer,
defoaming agent: 0.1 to 1.5 parts by weight,
pour point depressant: 0.1 to 1.5 parts by weight,
a demulsifier: 0.1 to 1.5 parts by weight,
viscosity index improver: 1 to 6 parts of (A) a water-soluble polymer,
liquid mixed shielding phenol: 0.1 to 1 part by weight of a surfactant,
liquid diarylamine: 0.1 to 1 part by weight of a surfactant,
alkyl dithiophosphates: 0.1 to 1 part by weight of a surfactant,
alkylene succinates: 0.01 to 0.1 part by weight,
phosphate ester: 0.01 to 0.1 part by weight,
synthesizing calcium petroleum sulfonate: 0.01 to 0.1 part by weight,
detergent LZ 6786: 1-3 parts.
2. The clean long-life hydraulic oil of claim 1, wherein: the defoaming agent is a silicon-containing or/and non-silicon type defoaming agent.
3. The clean long-life hydraulic oil of claim 1, wherein: the demulsifier is a copolymer of ethylene oxide and propylene oxide.
4. The clean long-life hydraulic oil of claim 1, wherein: the pour point depressant is polymethacrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330988.3A CN111718782A (en) | 2020-04-24 | 2020-04-24 | Clean long-life hydraulic oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330988.3A CN111718782A (en) | 2020-04-24 | 2020-04-24 | Clean long-life hydraulic oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111718782A true CN111718782A (en) | 2020-09-29 |
Family
ID=72564172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010330988.3A Pending CN111718782A (en) | 2020-04-24 | 2020-04-24 | Clean long-life hydraulic oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111718782A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337175A (en) * | 2010-07-26 | 2012-02-01 | 中国石油化工股份有限公司 | Hydraulic oil composition with high extreme pressure performance |
| CN103087807A (en) * | 2011-11-04 | 2013-05-08 | 中国石油化工股份有限公司 | High-detergency hydraulic oil composition |
| CN109370732A (en) * | 2018-11-23 | 2019-02-22 | 统石油化工有限公司 | A kind of high peace and quiet type hydraulic fluid compositions |
-
2020
- 2020-04-24 CN CN202010330988.3A patent/CN111718782A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337175A (en) * | 2010-07-26 | 2012-02-01 | 中国石油化工股份有限公司 | Hydraulic oil composition with high extreme pressure performance |
| CN103087807A (en) * | 2011-11-04 | 2013-05-08 | 中国石油化工股份有限公司 | High-detergency hydraulic oil composition |
| CN109370732A (en) * | 2018-11-23 | 2019-02-22 | 统石油化工有限公司 | A kind of high peace and quiet type hydraulic fluid compositions |
Non-Patent Citations (1)
| Title |
|---|
| 王毓民、王恒: "《润滑材料与润滑技术》", 31 January 2005, 化学工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102618360B (en) | Compressor oil composition | |
| CN104263481A (en) | Air compressor oil and preparation method thereof | |
| CN101831346B (en) | Flame-retardant hydraulic oil and preparation and application thereof | |
| CN101812349B (en) | Lubricating oil and grease base oil, and preparation method and applications thereof | |
| CN102031185B (en) | Anti micro-pitting industrial gear oil composition | |
| CN103773575B (en) | Biodegradable screw air compressor oil | |
| CN101812358A (en) | High-temperature chain oil composition of mixed base oil | |
| CN101696369A (en) | High-temperature chain oil composition | |
| KR101301343B1 (en) | Lubricating oil composition | |
| CN101240219A (en) | High temperature chain oil composition | |
| CN107629842A (en) | A kind of copper drawing fluid | |
| CN108300554B (en) | Synthetic non-stain hydraulic oil and preparation method thereof | |
| CN111718781A (en) | Clean long-life hydraulic oil | |
| CN112522011A (en) | Environment-friendly air compressor oil and preparation method thereof | |
| CN112708494A (en) | No. 10 aviation hydraulic oil special for ground and preparation method thereof | |
| CN111718782A (en) | Clean long-life hydraulic oil | |
| CN105199817A (en) | Low-temperature lithium-calcium bearing lubricating grease and preparation method | |
| CN113088368B (en) | Air compressor oil composition and preparation method thereof | |
| CN111100740B (en) | Long-life synergistic compressor oil composition and preparation method thereof | |
| CN116004313A (en) | Low-viscosity diesel engine lubricating oil and preparation method thereof | |
| CN109504515B (en) | Energy-saving environment-friendly agricultural machine oil and preparation method thereof | |
| CN101812352B (en) | Antioxidant for hydraulic oil and preparation and application thereof | |
| CN112143552A (en) | Oil-gas lubricating oil composition and preparation method thereof | |
| CN109370736B (en) | Alkali-resistant ashless hydraulic oil | |
| CN115505442B (en) | Hot-rolled oil composition and preparation method and application 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200929 |