CN111909757A - Novel environment-friendly lubricating grease and preparation method thereof - Google Patents
Novel environment-friendly lubricating grease and preparation method thereof Download PDFInfo
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- CN111909757A CN111909757A CN202010925469.1A CN202010925469A CN111909757A CN 111909757 A CN111909757 A CN 111909757A CN 202010925469 A CN202010925469 A CN 202010925469A CN 111909757 A CN111909757 A CN 111909757A
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- 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
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- 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
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
- C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof used as thickening agents
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- 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
- C10M2207/283—Esters of polyhydroxy 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
- 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
- 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
Abstract
The invention discloses novel environment-friendly lubricating grease which comprises, by weight, 25-30 parts of vegetable oil, 20-25 parts of lipid oil, 13-23 parts of olefin engine oil, 12-15 parts of an antiwear agent, 5-25 parts of a lithium-based thickening agent and 0.1-2 parts of an antioxidant stabilizer, and also discloses a preparation method of the novel environment-friendly lubricating grease, which comprises the following steps: preparing a base oil; preparing an antiwear agent; preparing a lithium-based thickening agent; preparing an antioxidant stabilizer; treating base oil and adding a lithium-based thickening agent to prepare base grease; the novel environment-friendly lubricating grease is prepared from an antiwear agent and an antioxidant stabilizer in the basic lubricating grease, the composition of the base oil is improved on the basis of the prior art, the degradation capability of the base oil is effectively improved by mixing vegetable oil, lipid oil and olefin engine oil, the environment-friendly performance of the base oil is also improved, and the environment-friendly performance of the lubricating grease is improved in an auxiliary manner by using various additives with better environment-friendly performance on the premise of not reducing the performance of the lubricating grease.
Description
Technical Field
The invention relates to the technical field of lubricating grease, in particular to novel environment-friendly lubricating grease and a preparation method thereof.
Background
The problem of abrasion between wheel rails is a problem of continuous research and attention in all countries in the world, lubricating grease is often adopted in the prior art to solve the problem, and the problem that environmental protection performance is not considered in the conventional lubricating grease is often solved, so that the lubricating grease is difficult to biodegrade, and a great deal of harm is caused to the environment.
Disclosure of Invention
The invention provides novel environment-friendly lubricating grease and a preparation method thereof, aiming at solving the problem that the existing lubricating grease is difficult to carry out biodegradation and has low environment-friendly performance.
The novel environment-friendly lubricating grease comprises, by weight, 25-30 parts of vegetable oil, 20-25 parts of lipid oil, 13-23 parts of olefin engine oil, 12-15 parts of an antiwear agent, 5-25 parts of a lithium-based thickening agent and 0.1-2 parts of an antioxidant stabilizer.
The invention also provides a preparation method of the novel environment-friendly lubricating grease, which comprises the following steps:
mixing vegetable oil, lipid oil and olefin engine oil according to parts by weight to obtain base oil;
preparing an antiwear agent;
preparing a lithium-based thickening agent;
preparing an antioxidant stabilizer;
saponifying and dehydrating the base oil, heating, adding the prepared lithium-based thickening agent according to parts by weight, and naturally cooling to obtain base lubricating grease;
and adding the prepared antiwear agent and the prepared antioxidant stabilizer into the basic lubricating grease according to the parts by weight so as to prepare the novel environment-friendly lubricating grease.
Wherein the antiwear agent is propylene glycol oleate.
The antiwear agent preparation method comprises the following steps:
mixing oleic acid and 1, 3-propylene glycol according to the ratio of 340-396: 76 parts by weight of a mixed solvent;
0.2-2 parts of concentrated sulfuric acid and 20-30 parts of toluene are added into the mixed solvent, and reflux and water separation are carried out for 2-4 hours under preset conditions to prepare the propylene glycol oleate.
Wherein the preset condition is that the temperature is controlled to be 110-140 ℃.
Wherein the lithium-based thickening agent is 12-lithium-lauryl stearate soap.
Wherein, the preparation of the lithium-based thickener comprises the following steps:
stirring 12-hydroxystearic acid and distilled water in a weight ratio of 30-40: 100 in a reaction vessel, and heating to a first preset temperature to prepare a mixed solution;
adding 35-45 parts of an aqueous solution of lithium hydroxide into the mixed solution, and stirring again and heating to a second preset temperature to obtain a reaction pre-product;
and drying the reaction pre-product to finish the preparation of the 12-hydroxy lithium stearate soap.
Wherein the first preset temperature is 80 ℃ and the second preset temperature is 100 ℃.
The invention has the beneficial effects that: on the basis of the prior art, the novel environment-friendly lubricating grease is provided, the composition of the base oil is improved, the degradation capability of the base oil is effectively improved by utilizing the mixing of the vegetable oil, the lipid oil and the olefin engine oil, the environment-friendly performance of the base oil is also improved, the preparation method of the novel environment-friendly lubricating grease is also provided, and the environment-friendly performance of the lubricating grease is improved in an auxiliary manner by utilizing various auxiliaries with better environment-friendly performance on the premise of not reducing the performance of the lubricating grease.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a process flow structure of a preparation method of the novel environment-friendly lubricating grease and the preparation method of the environment-friendly lubricating grease of the invention.
FIG. 2 is a schematic diagram of a process flow structure of a preparation process of the novel environment-friendly lubricating grease and the antiwear agent propylene glycol oleate prepared by the preparation method.
FIG. 3 is a schematic diagram of a process flow structure of a preparation process of a lithium-based thickener 12-lithium stearate soap according to the present invention.
FIG. 4 is a schematic diagram of the flow structure of a preparation process for compounding an antioxidant stabilizer diphenylamine A liquid and hindered phenol in the novel environment-friendly lubricating grease and the preparation method of the invention.
FIG. 5 is a schematic diagram of the preparation process flow structure of diphenylamine A liquid according to the present invention.
FIG. 6 is a schematic diagram of a process flow structure of hindered phenol preparation of the novel environment-friendly grease and the preparation method of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 6, the present invention provides a technical solution:
the novel environment-friendly lubricating grease comprises, by weight, 25-30 parts of vegetable oil, 20-25 parts of lipid oil, 13-23 parts of olefin engine oil, 12-15 parts of an antiwear agent, 5-25 parts of a lithium-based thickening agent and 0.1-2 parts of an antioxidant stabilizer.
Further, the preparation method of the novel environment-friendly lubricating grease comprises the following steps:
s101, mixing vegetable oil, lipid oil and olefin engine oil according to parts by weight to obtain base oil;
s102, preparing an antiwear agent;
s103, preparing a lithium-based thickening agent;
s104, preparing an antioxidant stabilizer;
s105, saponifying and dehydrating the base oil, heating, adding the prepared lithium-based thickening agent according to the parts by weight, and naturally cooling to obtain base grease;
s106, adding the prepared antiwear agent and the prepared antioxidant stabilizer into the basic lubricating grease according to the parts by weight to prepare the novel environment-friendly lubricating grease.
Further, the antiwear agent is propylene glycol oleate.
Further, the preparation of the antiwear agent comprises the following steps:
s201, mixing oleic acid and 1, 3-propylene glycol according to the ratio of 340-396: 76 parts by weight of a mixed solvent;
s202, adding 0.2-2 parts of concentrated sulfuric acid and 20-30 parts of toluene into a mixed solvent, and performing reflux and water separation for 2-4 hours under preset conditions to prepare the propylene glycol oleate.
Further, the preset condition is that the temperature is controlled to be 110-140 ℃.
Further, the lithium-based thickening agent is 12-lithium-lauryl stearate soap.
Further, the preparation of the lithium-based thickener comprises the following steps:
s301, stirring 12-hydroxystearic acid and distilled water in a reaction container according to the weight ratio of 30-40: 100, and heating to a first preset temperature to prepare a mixed solution;
s302, adding 35-45 parts of lithium hydroxide aqueous solution into the mixed solution, stirring again, and heating to a second preset temperature to obtain a reaction pre-product;
s303, drying the reaction pre-product to complete the preparation of the 12-hydroxy lithium stearate soap.
Further, the first preset temperature is 80 ℃ and the second preset temperature is 100 ℃.
Further, the preparation of the antioxidant stabilizer comprises the following steps:
s401, preparing diphenylamine A liquid;
s402, preparing hindered phenol;
s403, mixing diphenylamine A liquid and hindered phenol according to the weight portion of 50:50 to prepare an antioxidant stabilizer;
the preparation method of the diphenylamine A liquid comprises the following steps:
s501, mixing diphenylamine and glacial acetic acid in a weight ratio of 10-20: 1000, and adding 20-30 parts of concentrated sulfuric acid to prepare diphenylamine A solution.
The preparation of the hindered phenol comprises the following steps:
s601, dissolving 30-40 parts of m-pentadecylphenol in 78.4 parts of acetone in a reaction container by weight, adding a zinc chloride catalyst, heating and stirring, dropwise adding 8-10 parts of tert-butyl chloride into the reaction container, waiting for the reaction to be finished after dropwise adding, and cooling to normal temperature to obtain a brownish red transparent liquid;
s602 filtering the brown red transparent liquid, washing with 5% KOH solution by alkali, washing with distilled water to neutrality, distilling under reduced pressure at 3000Pa and 100 ℃, and cooling to obtain a dark brown red solid product mixture;
s603, carrying out reduced pressure distillation on the dark brown red solid product mixture under the condition of 100Pa, cutting a fraction at 130-150 ℃, cooling, dissolving the fraction with ethanol, and carrying out recrystallization purification to obtain the hindered phenol.
Specific example 1:
mixing 340g of oleic acid with 76g of 1, 3-propylene glycol to prepare a mixed solvent;
adding 0.2g of concentrated sulfuric acid and 20g of toluene into the mixed solvent, and performing reflux and water diversion at 110 ℃ for 2 hours to prepare propylene glycol oleate;
stirring 12-hydroxystearic acid 30g and distilled water 100g in a reaction vessel, and heating to 80 ℃ to prepare a mixed solution;
adding 42g of lithium hydroxide aqueous solution into the mixed solution, and stirring again and heating to 100 ℃ to obtain a reaction pre-product;
drying the reaction pre-product to complete the preparation of the 12-hydroxy lithium stearate soap;
mixing 10g of diphenylamine and 100g of glacial acetic acid, and adding 20g of concentrated sulfuric acid to prepare diphenylamine A solution;
dissolving 30g of m-pentadecylphenol in 78.4g of acetone in a reaction container, adding a zinc chloride catalyst, heating and stirring, dropwise adding 8 parts of tert-butyl chloride into the reaction container, waiting for the reaction to finish after dropwise adding, and cooling to normal temperature to obtain a brownish red transparent liquid;
filtering the brownish red transparent liquid, washing with 5% KOH solution by alkali, washing with distilled water to neutrality, distilling under reduced pressure at 3000Pa and 100 ℃, and cooling to obtain a dark brownish red solid product mixture;
and (3) carrying out reduced pressure distillation on the dark brown red solid product mixture under the condition of 100Pa, cutting out 130-150 ℃ fraction, cooling, dissolving the fraction with ethanol, and carrying out recrystallization purification to obtain the hindered phenol.
Mixing 50g of diphenylamine A solution and 50g of hindered phenol to prepare an antioxidant stabilizer;
mixing 25g of vegetable oil, 20g of lipid oil and 13g of olefin engine oil to obtain base oil;
saponifying and dehydrating the base oil, heating, adding 5g of prepared lithium-based thickening agent, and naturally cooling to obtain base lubricating grease;
12g of the prepared antiwear agent and 0.1g of the antioxidant stabilizer are added into the base lubricating grease to prepare the novel environment-friendly lubricating grease.
Specific example 2:
396g of oleic acid is mixed with 76g of 1, 3-propylene glycol to prepare a mixed solvent;
adding 2g of concentrated sulfuric acid and 30g of toluene into the mixed solvent, and performing reflux and water diversion at 110 ℃ for 4 hours to prepare propylene glycol oleate;
stirring and heating 40g of 12-hydroxystearic acid and 100g of distilled water in a reaction vessel to 80 ℃ to prepare a mixed solution;
adding 45g of lithium hydroxide aqueous solution into the mixed solution, and stirring again and heating to 100 ℃ to obtain a reaction pre-product;
drying the reaction pre-product to complete the preparation of the 12-hydroxy lithium stearate soap;
mixing 20g of diphenylamine and 100g of glacial acetic acid, and adding 30g of concentrated sulfuric acid to prepare diphenylamine A solution;
dissolving 40g of m-pentadecylphenol in 78.4g of acetone in a reaction container, adding a zinc chloride catalyst, heating and stirring, dropwise adding 10 parts of tert-butyl chloride into the reaction container, waiting for the reaction to finish after dropwise adding, and cooling to normal temperature to obtain a brownish red transparent liquid;
filtering the brownish red transparent liquid, washing with 5% KOH solution by alkali, washing with distilled water to neutrality, distilling under reduced pressure at 3000Pa and 100 ℃, and cooling to obtain a dark brownish red solid product mixture;
and (3) carrying out reduced pressure distillation on the dark brown red solid product mixture under the condition of 100Pa, cutting out 130-150 ℃ fraction, cooling, dissolving the fraction with ethanol, and carrying out recrystallization purification to obtain the hindered phenol.
Mixing 50g of diphenylamine A solution and 50g of hindered phenol to prepare an antioxidant stabilizer;
mixing 30g of vegetable oil, 25g of lipid oil and 23g of olefin engine oil to obtain base oil;
saponifying and dehydrating the base oil, heating, adding 8g of prepared lithium-based thickening agent, and naturally cooling to obtain base lubricating grease;
15g of the prepared antiwear agent and 0.1g of the antioxidant stabilizer are added into the base lubricating grease to prepare the novel environment-friendly lubricating grease.
On the basis of the prior art, the formula of the lubricating grease is improved, various oil materials with excellent biodegradability and auxiliaries are compounded, the lubricating grease has excellent degradability on the premise of not reducing the performance of the lubricating grease, and the applicability and the environmental protection performance of the lubricating grease are effectively improved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The novel environment-friendly lubricating grease is characterized by comprising, by weight, 25-30 parts of vegetable oil, 20-25 parts of lipid oil, 13-23 parts of olefin engine oil, 12-15 parts of an antiwear agent, 5-25 parts of a lithium-based thickening agent and 0.1-2 parts of an antioxidant stabilizer.
2. A preparation method of a novel environment-friendly lubricating grease, which comprises the novel environment-friendly lubricating grease as claimed in claim 1, and is characterized by further comprising the following steps:
mixing vegetable oil, lipid oil and olefin engine oil according to parts by weight to obtain base oil;
preparing an antiwear agent;
preparing a lithium-based thickening agent;
preparing an antioxidant stabilizer;
saponifying and dehydrating the base oil, heating, adding the prepared lithium-based thickening agent according to parts by weight, and naturally cooling to obtain base lubricating grease;
and adding the prepared antiwear agent and the prepared antioxidant stabilizer into the basic lubricating grease according to the parts by weight so as to prepare the novel environment-friendly lubricating grease.
3. The method for preparing the novel environment-friendly lubricating grease as claimed in claim 2, wherein the antiwear agent is propylene glycol oleate.
4. The preparation method of the novel environment-friendly lubricating grease as claimed in claim 3, wherein the preparation of the antiwear agent comprises the following steps:
mixing oleic acid and 1, 3-propylene glycol according to the ratio of 340-396: 76 parts by weight of a mixed solvent;
0.2-2 parts of concentrated sulfuric acid and 20-30 parts of toluene are added into the mixed solvent, and reflux and water separation are carried out for 2-4 hours under preset conditions to prepare the propylene glycol oleate.
5. The method for preparing a novel environment-friendly grease as claimed in claim 4, wherein the predetermined condition is that the temperature is controlled to be 110-140 ℃.
6. The method for preparing the novel environment-friendly lubricating grease as claimed in claim 5, wherein the lithium-based thickener is 12-hydroxy lithium stearate soap.
7. The method for preparing the novel environment-friendly lubricating grease as claimed in claim 5, wherein the preparation of the lithium-based thickener comprises the following steps:
stirring 12-hydroxystearic acid and distilled water in a weight ratio of 30-40: 100 in a reaction vessel, and heating to a first preset temperature to prepare a mixed solution;
adding 35-45 parts of an aqueous solution of lithium hydroxide into the mixed solution, and stirring again and heating to a second preset temperature to obtain a reaction pre-product;
and drying the reaction pre-product to finish the preparation of the 12-hydroxy lithium stearate soap.
8. The method for preparing a novel environment-friendly grease as claimed in claim 7, wherein the first predetermined temperature is 80 ℃ and the second predetermined temperature is 100 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010925469.1A CN111909757A (en) | 2020-09-03 | 2020-09-03 | Novel environment-friendly lubricating grease and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010925469.1A CN111909757A (en) | 2020-09-03 | 2020-09-03 | Novel environment-friendly lubricating grease and preparation method thereof |
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| CN111909757A true CN111909757A (en) | 2020-11-10 |
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Citations (4)
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|---|---|---|---|---|
| CN104804842A (en) * | 2014-01-27 | 2015-07-29 | 中国石油化工股份有限公司 | Environmentally friendly lubricating grease composition and preparation method thereof |
| CN105586115A (en) * | 2014-10-23 | 2016-05-18 | 中国石油化工股份有限公司 | A lithium-based lubricating grease composition with excellent wear resistance and a preparing method thereof |
| CN105950267A (en) * | 2016-05-23 | 2016-09-21 | 中国铁道科学研究院金属及化学研究所 | Environment-friendly wheel and track lubricating grease and method for preparing same |
| CN106675708A (en) * | 2016-12-16 | 2017-05-17 | 莱茵德控润滑油（上海）有限公司 | Environment-friendly wheel-rail lubricating anti-abrasive agent |
-
2020
- 2020-09-03 CN CN202010925469.1A patent/CN111909757A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104804842A (en) * | 2014-01-27 | 2015-07-29 | 中国石油化工股份有限公司 | Environmentally friendly lubricating grease composition and preparation method thereof |
| CN105586115A (en) * | 2014-10-23 | 2016-05-18 | 中国石油化工股份有限公司 | A lithium-based lubricating grease composition with excellent wear resistance and a preparing method thereof |
| CN105950267A (en) * | 2016-05-23 | 2016-09-21 | 中国铁道科学研究院金属及化学研究所 | Environment-friendly wheel and track lubricating grease and method for preparing same |
| CN106675708A (en) * | 2016-12-16 | 2017-05-17 | 莱茵德控润滑油（上海）有限公司 | Environment-friendly wheel-rail lubricating anti-abrasive agent |
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| Title |
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| 姜海建: "油酸丙二醇酯抗磨剂的制备与性能研究", 《科研开发》 * |
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Application publication date: 20201110 |
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