CN108192695A - A kind of environment-friendly degradable extreme pressure grease and preparation method thereof - Google Patents
A kind of environment-friendly degradable extreme pressure grease and preparation method thereof Download PDFInfo
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- CN108192695A CN108192695A CN201710475622.3A CN201710475622A CN108192695A CN 108192695 A CN108192695 A CN 108192695A CN 201710475622 A CN201710475622 A CN 201710475622A CN 108192695 A CN108192695 A CN 108192695A
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- extreme pressure
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- friendly degradable
- pressure grease
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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
-
- 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
-
- 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
- C10M2201/085—Phosphorus oxides, acids or 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
- 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
- C10M2207/025—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with condensed rings
-
- 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
-
- 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
- C10M2207/2835—Esters of polyhydroxy compounds 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
- C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups 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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/061—Esters derived from boron
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/64—Environmental friendly compositions
Abstract
The invention discloses a kind of environment-friendly degradable extreme pressure greases, which is characterized in that the component including pressing proportion by weight below：Basal liquid 75~92%, thickening agent 5~15%, extreme pressure anti-wear additives 0.5~3%, antirust agent 0.5~2%, antioxidant 0.05%~2%.A kind of environment-friendly degradable extreme pressure grease of the present invention and preparation method thereof, has the advantages that lubricity is good, wear resistence is good, degradability is good and environmentally friendly.
Description
Technical field
The present invention relates to lubricating grease fields, specifically, are related to a kind of environment-friendly degradable extreme pressure grease and its preparation side
Method.
Background technology
As lubricant grease is in the application of all trades and professions and properties of product requirement and the limitation of laws and regulations requirement.In the market
Most of lubricant is all the base oil and additive or material difficult to degrade being more or less harmful to containing some environment, and one
After a little particular field uses, recovery measure is not perfect, and grease is caused to pollute environment.As various countries are to RoHS popularizations, European Union pair
The constantly improve of the environmental legislations such as REACH and update, more and more harmful substances are prohibited or limit the quantity addition and use.
US6429175 discloses a kind of grease composition, and base oil therein is vegetable oil, thickening agent using bentonite as
It is main, it can also be lithium soap, selected antiwear additive hydroxy acid bismuth salt is decanedioic acid bismuth, 2 ethyl hexanoic acid bismuth, bismuth naphthenate or it is mixed
Object is closed, the additives such as calcium carbonate, polytetrafluoroethylene (PTFE) can also be added in.The lubricant have high Squeezing ground, excellent water-resistance with
The feature of environmental protection.CN1120577 discloses a kind of special lubricating grease for automotive hydraulic brake leather cup, be by 12- hydroxy stearic acids 10%,
Stearic acid 1%, lithium hydroxide 4%, exquisite castor oil 85% and diphenylamines are formulated.The preparation of greases technique uses
Be Directly saponification method.
The present invention is based on oil based on environment-friendly degradable polyethers and polyol ester, with ten dihydroxystearic acids and tristearin
Sour lithium soap is thickening agent, and environmental-protection additive synthesizes environmentally friendly extreme pressure grease.The environmental protection lubricating grease both can guarantee sufficient profit
Slip, abrasion resistant extreme-pressure and degradability and environmental protection meet all kinds of environmental protection standards such as RoHS, REACH.
Invention content
The purpose of the present invention is overcoming shortcoming of the prior art, a kind of environment-friendly degradable extreme pressure grease is provided
And preparation method thereof, have the advantages that lubricity is good, wear resistence is good, degradability is good and environmentally friendly.
In order to solve the above technical problems, the present invention is solved by following technical proposals：
A kind of environment-friendly degradable extreme pressure grease, the component including pressing proportion by weight below：
Preferably, the basal liquid is the mixture of degradable polyethers, polyol ester.
Preferably, the polyethers, polyol ester are 22~600cst in 40 DEG C of viscosity.
Preferably, the thickening agent is molten by 6~1,5%0 dihydroxystearic acid, stearic acid and 1~5% lithium hydroxide oil
Liquid reaction generation.Lithium hydroxide oil solution is free of the crystallization water, can simplify production technology, improve production efficiency, economize on resources and
Cost, due to the use of ten dihydroxystearic acids, its structural stability is good, and mechanical stability is good, point oil is less, and addition is stearic
Acid, adhesiveness are good.
Preferably, the extreme pressure anti-wear additives are the one or more combination of phosphate laminate, organic boric acid ester.
Preferably, the antirust agent is the one or more combination of environmentally friendly tungstates, molybdate.
Preferably, one or more combination of the antioxidant for the double lauryls of thio-2 acid and tocopherol.
Based on same design, the present invention also provides a kind of preparation method of environment-friendly degradable extreme pressure grease, including：
A, the polyethers, polyol ester are mixed to get 75~92% basal liquids；
B, 1/3 basal liquid is taken, 6~1,5%0 dihydroxystearic acid of addition into obtained basal liquid, stearic acid, and
It is complete to be heated to 70~80 DEG C of dissolvings；
C, 1~5% lithium hydroxide oil solution is added in into the solution that dissolving is completed, control temperature is in 90~105 DEG C of saponification
30min, and add in 1/3 basal liquid.
D, saponification is completed, and is warming up to 130~140 DEG C of dehydrations, 215 DEG C of formation true solutions, the basal liquid of addition residue 1/3
It cools, and logical cool down adds in 0.5~3% extreme pressure anti-wear additives, 0.5~2% antioxidant, 0.05% when being water-cooled to 80 DEG C
~2% antirust agent, colloid mill, three rollers grind 3 times, are got product after filtering respectively.
The present invention has the following advantages compared with prior art and advantageous effect：
1st, the present invention in thickening agent by 6~1,5%0 dihydroxystearic acid, stearic acid and 1~5% lithium hydroxide oil solution
Reaction generation, wherein lithium hydroxide oil solution are free of the crystallization water, can simplify production technology, improve production efficiency, economize on resources
And cost.
2nd, using product made of this formula, due to the use of ten dihydroxystearic acids, its structural stability is good, machinery peace
It is qualitative it is good, point oil it is less.
3rd, using product made of this formula, due to adding stearic acid, adhesiveness is good.
4th, using product made of this formula, there are excellent wear-resistant and extreme pressure property, anti-oxidant and Corrosion Protection.
5th, using product made of this formula, biodegradability is good, environmentally friendly.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
Embodiment 1
A kind of environment-friendly degradable extreme pressure grease of the present embodiment, the component including pressing proportion by weight below：Basal liquid
75~92%, thickening agent 5~15%, extreme pressure anti-wear additives 0.5~3%, antirust agent 0.5~2%, antioxidant 0.05%~2%,
Basal liquid is degradable polyethers, the mixture of polyol ester, the polyethers, polyol ester 40 DEG C of viscosity for 22~
600cst, the thickening agent is reacted by 6~1,5%0 dihydroxystearic acid, stearic acid and 1~5% lithium hydroxide oil solution gives birth to
The crystallization water is free of into, lithium hydroxide oil solution, production technology can be simplified, production efficiency is improved, economizes on resources and cost, by
In having used, its structural stability of ten dihydroxystearic acids is good, and mechanical stability is good, point oil is less, adds stearic acid, adherency
Property it is good, the extreme pressure anti-wear additives are phosphate laminate, the one or more combination of organic boric acid ester, and the antirust agent is environmentally friendly tungsten
The one or more combination of hydrochlorate, molybdate, the antioxidant for the double lauryl of thio-2 acid and tocopherol one kind or
Several combinations.
A kind of preparation method of above-mentioned environment-friendly degradable extreme pressure grease, includes, following steps using saponification method：
The polyethers, polyol ester are mixed to get 88% basal liquid.The 1/3 of basal liquid is taken, into obtained basal liquid
8%0 dihydroxystearic acid, stearic acid are added in, and is heated to 70~80 DEG C of dissolvings completely, is added in the solution completed to dissolving
2% lithium hydroxide oil solution, control temperature add in 1/3 basal liquid in 90~105 DEG C of saponification 30min.Saponification is completed, and is risen
Temperature is to 130~140 DEG C of dehydrations, and 215~220 DEG C of formation true solutions, the basal liquid for adding in residue 1/3 cools, and logical cooling
1% phosphoric acid hydrogen zirconium, 0.5% thio-2 acid double lauryl, 0.5% tungstates, colloid mill, three are added in when being water-cooled to 80 DEG C
Roller is ground 3 times respectively, is got product after filtering.Its performance table is shown in Table 1.
Embodiment 2
A kind of environment-friendly degradable extreme pressure grease of the present embodiment, the component including pressing proportion by weight below：Basal liquid
75~92%, thickening agent 5~15%, extreme pressure anti-wear additives 0.5~3%, antirust agent 0.5~2%, antioxidant 0.05%~2%,
Basal liquid is degradable polyethers, the mixture of polyol ester, the polyethers, polyol ester 40 DEG C of viscosity for 22~
600cst, the thickening agent is reacted by 6~1,5%0 dihydroxystearic acid, stearic acid and 1~5% lithium hydroxide oil solution gives birth to
The crystallization water is free of into, lithium hydroxide oil solution, production technology can be simplified, production efficiency is improved, economizes on resources and cost, by
In having used, its structural stability of ten dihydroxystearic acids is good, and mechanical stability is good, point oil is less, adds stearic acid, adherency
Property it is good, the extreme pressure anti-wear additives are phosphate laminate, the one or more combination of organic boric acid ester, and the antirust agent is environmentally friendly tungsten
The one or more combination of hydrochlorate, molybdate, the antioxidant for the double lauryl of thio-2 acid and tocopherol one kind or
Several combinations.
A kind of preparation method of above-mentioned environment-friendly degradable extreme pressure grease, includes, following steps using saponification method：
The polyethers, polyol ester are mixed to get 85% basal liquid.The 1/3 of basal liquid is taken, into obtained basal liquid
1,0%0 dihydroxystearic acid, stearic acid are added in, and is heated to 70~80 DEG C of complete of dissolving and adds into the solution that dissolving is completed
Enter 2.3% lithium hydroxide oil solution, control temperature adds in 1/3 basal liquid in 90~105 DEG C of saponification 30min.Saponification is complete
Into, 130~140 DEG C of dehydrations, 215~220 DEG C of formation true solutions are warming up to, the basal liquid for adding in residue 1/3 cools, and
Logical cooling adds in 1% phosphoric acid hydrogen zirconium, 1% thio-2 acid double lauryl, 0.7% tungstates, colloid when being water-cooled to 80 DEG C
Mill, three rollers are ground 3 times respectively, are got product after filtering.Its performance table is shown in Table 1.
1 embodiment 1 of table, 2 performance summary sheets.
| Embodiment 1 | Embodiment 2 | |
| Cone penetration (0.1mm) | 298 | 261 |
| Dropping point (DEG C) | 203 | 207 |
| Stencil oil-dividing (100 DEG C, for 24 hours, %) | 0.83 | 0.75 |
| Evaporation loss (100 DEG C, for 24 hours, %) | 0.35 | 0.32 |
| Copper corrosion | It is qualified | It is qualified |
| Water leaching number of dropouts (38 DEG C, 1h, %) | 4.2 | 4.0 |
| Extreme pressure property PD (kgf) | 315 | 315 |
Thickening agent is anti-by 6~1,5%0 dihydroxystearic acid, stearic acid and 1~5% lithium hydroxide oil solution in the present invention
Should generate, wherein lithium hydroxide oil solution is free of the crystallization water, can simplify production technology, improve production efficiency, economize on resources and
Cost；Using product made of this formula, due to the use of ten dihydroxystearic acids, its structural stability is good, mechanical stability
Well, point oil is less；Using product made of this formula, due to adding stearic acid, adhesiveness is good；Using made of this formula
Product has excellent wear-resistant and extreme pressure property, anti-oxidant and Corrosion Protection；Using product made of this formula, biology can drop
Solution property is good, environmentally friendly.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, letter
Change, should be equivalent substitute mode, be included within protection scope of the present invention.
Claims (8)
- A kind of 1. environment-friendly degradable extreme pressure grease, which is characterized in that the component including pressing proportion by weight below：
- 2. a kind of environment-friendly degradable extreme pressure grease according to claim 1, which is characterized in that the basal liquid is can drop Solve the mixture of polyethers, polyol ester.
- 3. a kind of environment-friendly degradable extreme pressure grease according to claim 1, which is characterized in that the polyethers, polyalcohol Ester is 22~600cst in 40 DEG C of viscosity.
- 4. a kind of environment-friendly degradable extreme pressure grease according to claim 1, which is characterized in that the thickening agent by 6~ 15%0 dihydroxystearic acid, stearic acid and the reaction generation of 1~5% lithium hydroxide oil solution.
- 5. a kind of environment-friendly degradable extreme pressure grease according to claim 1, which is characterized in that the extreme pressure anti-wear additives are The one or more combination of phosphate laminate, organic boric acid ester.
- 6. a kind of environment-friendly degradable extreme pressure grease according to claim 1, which is characterized in that the antirust agent is environmental protection The one or more combination of tungstates, molybdate.
- 7. a kind of environment-friendly degradable extreme pressure grease according to claim 1, which is characterized in that the antioxidant is thio The one or more combination of the double lauryls of dipropionic acid and tocopherol.
- 8. a kind of preparation method of environment-friendly degradable extreme pressure grease described in claim 1, including：A, the polyethers, polyol ester are mixed to get 75~92% basal liquids；B, 1/3 basal liquid is taken, 6~1,5%0 dihydroxystearic acid, stearic acid are added in into obtained basal liquid, and be heated to 70~80 DEG C of dissolvings are complete；C, 1~5% lithium hydroxide oil solution is added in into the solution that dissolving is completed, control temperature is in 90~105 DEG C of saponification 30min, and add in 1/3 basal liquid.D, saponification is completed, and is warming up to 130~140 DEG C of dehydrations, 215 DEG C of formation true solutions, and the basal liquid for adding in residue 1/3 cools down drop Temperature, and lead to 0.5~3% extreme pressure anti-wear additives of addition, 0.5~2% antioxidant, 0.05%~2% when cooling is water-cooled to 80 DEG C and prevent Rust agent, colloid mill, three rollers grind 3 times, are got product after filtering respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475622.3A CN108192695A (en) | 2017-06-21 | 2017-06-21 | A kind of environment-friendly degradable extreme pressure grease and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710475622.3A CN108192695A (en) | 2017-06-21 | 2017-06-21 | A kind of environment-friendly degradable extreme pressure grease and preparation method thereof |
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| CN201710475622.3A Pending CN108192695A (en) | 2017-06-21 | 2017-06-21 | A kind of environment-friendly degradable extreme pressure grease and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113980725A (en) * | 2021-11-14 | 2022-01-28 | 安徽腾信新材料科技有限公司 | Environment-friendly engineering machinery lubricating grease and preparation method thereof |
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| CN103266006A (en) * | 2013-06-06 | 2013-08-28 | 太原理工大学 | Lubricating grease containing ion-exchange-type zirconium phosphate additive and preparation method thereof |
| CN103789065A (en) * | 2014-01-21 | 2014-05-14 | 江苏龙蟠科技股份有限公司 | Composition of food-grade lubricating grease and preparation method thereof |
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2017
- 2017-06-21 CN CN201710475622.3A patent/CN108192695A/en active Pending
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| CN102199471A (en) * | 2010-03-25 | 2011-09-28 | 中国石油化工股份有限公司 | Environmental protection type lubricating grease composition and method for preparing same |
| CN103266006A (en) * | 2013-06-06 | 2013-08-28 | 太原理工大学 | Lubricating grease containing ion-exchange-type zirconium phosphate additive and preparation method thereof |
| CN103789065A (en) * | 2014-01-21 | 2014-05-14 | 江苏龙蟠科技股份有限公司 | Composition of food-grade lubricating grease and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113980725A (en) * | 2021-11-14 | 2022-01-28 | 安徽腾信新材料科技有限公司 | Environment-friendly engineering machinery lubricating grease and preparation method thereof |
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Application publication date: 20180622 |