CN102268320A - Food-grade lubricating grease as well as preparation method and application thereof - Google Patents
Food-grade lubricating grease as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention relates to food-grade lubricating grease as well as a preparation method and application thereof. The food-grade lubricating grease comprises the following components by weight percent: 70-80% of base oil, 6-15% of thickening agent and 10-20% of antiwear agent. The preparation method comprises the following steps: adding fatty acid, aromatic acid and organic aluminum into the base oil in a proportion, mixing and heating to 60-100 DEG C, and carrying out a recombination reaction for 1-2 hours; further heating the combined material to 100-140 DEG C, adding tap water with a certain proportion and then maintaining the constant temperature for 1-2 hours, wherein water equivalent is 1-3 times that of organic aluminum; further heating the combined material to 150-180 DEG C and then maintaining the constant temperature for 0.5-1 hour; then adding quenching oil and evenly mixing, wherein the amount of quenching oil is about 30%-40% of that of base oil; and further cooling the material to the temperature below 140 DGE C, and adding the antiwear agent and then evenly mixing, so as to obtain the required product. In the invention, a one-step method is adopted for direct recombination reaction, thus process is simple, energy consumption is reduced, production cost is reduced, and the quality of the product produced by the process is relatively stable.
Description
Technical field
The present invention relates to food grade lubricating grease, or rather, is lubricating grease and the preparation method who is applied to drinking water pipeline and valve, to drinking water safety and have good anti-water, sealing, high temperature performance.
Background technology
Now domestic most of tap water transmission ﹠ distribution water conservancy project journey unit in charge of construction still uses suds, vegetables oil or Vaseline to be used for the lubricant of pipeline and valve installation process when pipeline and valve are installed.Their drawback is: one, suds, minimum, very thin, the easy loss of lubricant film of vegetables oil viscosity, its lubricity is far away less than professional lubricant, insufficient lubrication when very easily causing pipelining and valve to rotate causes the especially wearing and tearing of food grade rubber seal of all kinds of rubber seal; Suds, vegetables oil are very easily water-soluble, washed away after pipeline and valve are installed, and cause rubber wearing and tearing aggravation, and sealing property descends; Suds, vegetables oil remain in the sealing groove for a long time, use under hot and humid environment, and president bacterium, moldy metamorphism produce hazardous and noxious substances, thereby tap water is polluted soon, influence drinking-water quality; Two, use Vaseline under certain temperature, pressure environment, promptly may produce bacterium, acidification trend is arranged simultaneously in 100 hours; More than 200 hours, beginning souring, life-time service meeting corrosion pipeline and valve; Vaseline itself is very bad with rubber compatibility, cause easily that the rubber sealing structure volume obviously increases, hardness seriously reduces, cause the rubber aging cracking, with metal rotating mechanism wearing and tearing aggravation, cause tap water to reveal, thereby influence the work-ing life of rubber seal, even influence the work-ing life of pipeline, increase maintenance cost; Three, the used starting material of general industry lubricating grease and the course of processing can't satisfy the healthy requirement of food grade lubricating grease at all, more beavy metal impurity and chemical substance that some are harmful are contained in inside, and water resisting property is relatively poor, after long-time soluble in water, can cause objectionable impurities progressively to be spread in the water, cause water pollution; Four, the used base oil of while general industry lubricating grease can't satisfy the consistency requirement of rubber seal, after long-time the use, causes the leakage of pipeline and valve easily.
In the last few years, raising along with people's living standard, people are to the drinking water safety growing interest, " Drinking Water hygienic quality standard " increasingly stringent, domestic all protective materials that contact with Drinking Water (comprising lubricant) all will carry out the hygienic safety evaluation according to " Drinking Water transmission ﹠ distribution wetting system and protective material hygienic safety value disciplines ", then to carry out all kinds of tap water authentications abroad, as WRAS authentication, NSF authentication.Lubricated and the sealing that suds, vegetables oil or Vaseline is used for tap water transmission and distribution pipeline and valve assembling is backward greatly, can not satisfy the requirement of " Drinking Water hygienic quality standard ".
By the inquiry of document and patent, also not have both at home and abroad at present to find to be used for drinking water pipeline and valve lubricated with the food grade lubricating grease document and the patent report that seal.
Summary of the invention
The invention provides a kind of food grade lubricating grease and preparation method, be specially adapted to the use of drinking water pipeline and valve, this grease composition comprises food grade base oil, viscosifying agent and compositions of additives.This grease composition has suds, vegetables oil, Vaseline, sealing property and hygienic safety performance that industrial grease did not have, rubber seal had good lubricity and consistency, and it is not perishable, can satisfy the lubricated and seal request of tap water industry pipeline and valve, meet the drinking-water quality healthy requirement.
The concrete technical scheme of the present invention is as follows:
Food grade lubricating grease of the present invention, its component and weight percentage are as follows:
Base oil: 70～80%;
Viscosifying agent: 6～15%;
Anti-wear agent: 10～20%;
Base oil comprises food grade mineral oil, synthetic oil or both mixed oils;
Viscosifying agent is by C
16-C
20The reactant of longer chain fatty acid, aromatic acid and organoaluminum form; The mol ratio of three kinds of raw materials is 1: (1～1.7): (1～1.2);
Anti-wear agent is the food grade ptfe micropowder.
Described base oil viscosity in the time of 100 ℃ is 10～1000mm
2/ s.Described viscosifying agent C
16-C
20Lipid acid comprise stearic acid, ten dihydroxystearic acids or Palmiticacid.Described aromatic acid comprises phenylformic acid or alkyl substituted benzoic acid.Described organoaluminum comprises aluminum isopropylate or three Virahols, three oxygen aluminium.
Each component of food grade lubricating grease of the present invention meets the HX-1 approval and requires or the FDA standard.
Food grade preparation of greases method of the present invention, step is as follows:
1) lipid acid, aromatic acid, organoaluminum are joined in the base oil in proportion, be mixed and heated to 60～100 ℃, carry out complex reaction, the reaction times is 1～2 hour;
2) with 1) the compound material continue to be warming up to 100～140 ℃, add the tap water of certain proportioning, water equivalent is normal 1～3 times an of organoaluminum, constant temperature 1～2 hour;
3) with 2) the compound material continued to be warming up to 150～180 ℃ of constant temperature 0.5～1 hour; Add quenching oil then and stir, the chilling oil mass accounts for 30%～40% of total basic oil mass;
4) with 3) material further be cooled to below 140 ℃ to add and promptly get required product after carrying out after anti-wear agent stirs.
Food grade lubricating grease of the present invention can be applied to the installation of the edible equipment of drinking water pipeline and valve etc.
Lubricating grease of the present invention belongs to food grade lubricating grease, has following outstanding advantage: satisfy tap water industry hygienic safety standard, by the Ministry of Health " Drinking Water transmission ﹠ distribution wetting system and protective material hygienic safety value disciplines ", can not cause drinking water pollution; Water resisting property is good, and is soluble in water for a long time, can not decompose, and oil bloom seldom; Very good with varieties of food items level rubber compatibility, assist rubber sealing device to seal; Have good lubricity with all kinds of rubber, the rubber sealing device wearing and tearing do not reduce maintenance cost in the time of can not causing pipelining or valve to rotate; This product has superior high low temperature applicable performance simultaneously.Therefore lubricating grease of the present invention can be used for the lubricated and sealing of tap water industry pipeline and valve connecting portion.In addition, preparation of greases method of the present invention adopts the direct complex reaction of single stage method, thereby makes technology simple, and energy efficient has reduced production cost, and the quality product of this explained hereafter is also more stable.
In following table, Vaseline and industrial grease have been provided and according to the representative data of exemplary embodiment drinking water pipeline of the present invention and valve lubricating grease.
Embodiment
Example 1:
With stearic acid 110 grams, it is 100mm that phenylformic acid 61 grams join 1560 gram viscosity
2In the food grade mineral oil of/s, be heated to 60 ℃, add aluminum isopropylate 86 grams, rise to 80 ℃, reacted 1 hour, continue to be heated to 100 ℃, add 12.5 gram tap water, constant temperature 1 hour continues material to be warming up to 150 ℃, constant temperature 30 minutes, add quenching oil 700 gram food grade mineral oil, when temperature is reduced to below 100 ℃, add ptfe micropowder 400 grams, carry out aftertreatment after stirring evenly and get finished product fat.The PERFORMANCE OF GREASES that technical recipe of the present invention makes is listed in the table below:
As seen from the above table, the rubber compatibility of lubricating grease of the present invention, high temperature performance and water repelling property are all fine.
Material proportion is described as follows:
Stearic acid: phenylformic acid: aluminum isopropylate is 1: 1.3: 1.1
Viscosifying agent accounts for 6.0% of lubricating grease total amount
Base oil accounts for 80% of lubricating grease total amount
The chilling oil mass accounts for 30% of base oil total amount
Adding the tap water equivalent is normal 2 times of aluminum isopropylate
Ptfe micropowder accounts for 14% of lubricating grease total amount
The lab work of this example in the simultaneous verification of the high temperature performance of having verified lubricating grease, water repelling property the rubber compatibility of lubricating grease, drinking water safety performance.
Example 2:
With stearic acid 104 grams, it is 1000mm that phenylformic acid 76 grams join 580 gram viscosity
2In the food grade synthetic oil of/s, be heated to 80 ℃, add aluminum isopropylate 74.6 grams, rise to 90 ℃, reacted 2 hours, continue to be heated to 110 ℃, add 5.7 gram tap water, constant temperature 1 hour continues material to be warming up to 180 ℃, constant temperature 40 minutes, add quenching oil 320 gram food grade synthetic oils, when temperature is reduced to below 130 ℃, add ptfe micropowder 120 grams, carry out aftertreatment after stirring evenly and get finished product fat.The PERFORMANCE OF GREASES that technical recipe of the present invention makes is listed in the table below:
As seen from the above table, the rubber compatibility of lubricating grease of the present invention, high temperature performance and water repelling property are all fine.
Material proportion is described as follows:
Stearic acid: phenylformic acid: aluminum isopropylate is 1: 1.7: 1
Viscosifying agent accounts for 15.0% of lubricating grease total amount
Base oil accounts for 75% of lubricating grease total amount
The chilling oil mass accounts for 36% of base oil total amount
Adding the tap water equivalent is normal 1 times of aluminum isopropylate
Ptfe micropowder accounts for 10% of lubricating grease total amount
The lab work of this example in the simultaneous verification of the high temperature performance of having verified lubricating grease, water repelling property the rubber compatibility of lubricating grease, drinking water safety performance.
Example 3:
With stearic acid 284 grams, it is 10mm that phenylformic acid 122 grams join 1710 gram viscosity
2In the food grade mineral oil of/s, be heated to 100 ℃, add aluminum isopropylate 245 grams, rise to 100 ℃, reacted 1 hour, continue to be heated to 140 ℃, add 65 gram tap water, constant temperature 2 hours continues material to be warming up to 170 ℃, constant temperature 60 minutes, add quenching oil 1130 gram food grade mineral oil, when temperature is reduced to below 140 ℃, add ptfe micropowder 812 grams, carry out aftertreatment after stirring evenly and get finished product fat.The PERFORMANCE OF GREASES that technical recipe of the present invention makes is listed in the table below:
As seen from the above table, the rubber compatibility of lubricating grease of the present invention, high temperature performance and water repelling property are all fine.
Material proportion is described as follows:
Stearic acid: phenylformic acid: aluminum isopropylate is 1: 1: 1.2
Viscosifying agent accounts for 10.0% of lubricating grease total amount
Base oil accounts for 70% of lubricating grease total amount
The chilling oil mass accounts for 40% of base oil total amount
Adding the tap water equivalent is normal 3 times of aluminum isopropylate
Ptfe micropowder accounts for 20% of lubricating grease total amount
The lab work of this example in the simultaneous verification of the high temperature performance of having verified lubricating grease, water repelling property the rubber compatibility of lubricating grease, drinking water safety performance.
Example 4:
With stearic acid 284 grams, it is 10mm that phenylformic acid 207 grams join 1710 gram viscosity
2In the food grade mineral oil of/s, be heated to 90 ℃, add three Virahols, three oxygen aluminium, 367 grams, rise to 80 ℃, constant temperature 1 hour continues to be heated to 140 ℃, adds 22 gram tap water, constant temperature 1.5 hours, continuation is warming up to 180 ℃ with material, constant temperature 50 minutes, and adding quenching oil 1130 gram viscosity is 10mm
2The food grade synthetic oil of/s when temperature is reduced to below 140 ℃, adds ptfe micropowder 700 grams, carries out aftertreatment after stirring evenly and gets finished product fat.The PERFORMANCE OF GREASES that technical recipe of the present invention makes is listed in the table below:
As seen from the above table, the rubber compatibility of lubricating grease of the present invention, high temperature performance and water repelling property are all fine.
Material proportion is described as follows:
Stearic acid: phenylformic acid: three Virahols, three oxygen aluminium are 1: 1.7: 1.2
Viscosifying agent accounts for 12.2% of lubricating grease total amount
Base oil accounts for 70.4% of lubricating grease total amount
The chilling oil mass accounts for 40% of base oil total amount
Add the tap water equivalent and be 1 times of three Virahols, the three oxygen equivalent thickness of aluminiums
Ptfe micropowder accounts for 17.4% of lubricating grease total amount
The lab work of this example in the simultaneous verification of the high temperature performance of having verified lubricating grease, water repelling property the rubber compatibility of lubricating grease, drinking water safety performance.
Example 5:
With 12-oxystearic acid 116 grams, it is 100mm that phenylformic acid 70.4 grams join 1220 gram viscosity
2In the food grade mineral oil of/s, be heated to 60 ℃, add aluminum isopropylate 86 grams, rise to 95 ℃, reacted 2 hours, continue to be heated to 100 ℃, add 12.5 gram tap water, constant temperature 1 hour continues material to be warming up to 150 ℃, constant temperature 30 minutes, add quenching oil 580 gram food grade mineral oil, when temperature is reduced to below 120 ℃, add ptfe micropowder 400 grams, carry out aftertreatment after stirring evenly and get finished product fat.The PERFORMANCE OF GREASES that technical recipe of the present invention makes is listed in the table below:
As seen from the above table, the rubber compatibility of lubricating grease of the present invention, high temperature performance and water repelling property are all fine.
Material proportion is described as follows:
12-oxystearic acid: phenylformic acid: aluminum isopropylate is 1: 1.5: 1.1
Viscosifying agent accounts for 7.8% of lubricating grease total amount
Base oil accounts for 75.4% of lubricating grease total amount
The chilling oil mass accounts for 32.2% of base oil total amount
Adding the tap water equivalent is normal 2 times of aluminum isopropylate
Ptfe micropowder accounts for 16.8% of lubricating grease total amount
The lab work of this example in the simultaneous verification of the high temperature performance of having verified lubricating grease, water repelling property the rubber compatibility of lubricating grease, drinking water safety performance.
Example 6:
With Palmiticacid 208 grams, it is 1000mm that phenylformic acid 143 grams join 1100 gram viscosity
2In the food grade synthetic oil of/s, be heated to 80 ℃, add aluminum isopropylate 164.0 grams, rise to 90 ℃, reacted 2 hours, continue to be heated to 110 ℃, add 13.2 gram tap water, constant temperature 1 hour continues material to be warming up to 180 ℃, constant temperature 40 minutes, add quenching oil 700 gram food grade synthetic oils, when temperature is reduced to below 130 ℃, add ptfe micropowder 300 grams, carry out aftertreatment after stirring evenly and get finished product fat.The PERFORMANCE OF GREASES that technical recipe of the present invention makes is listed in the table below:
As seen from the above table, the rubber compatibility of lubricating grease of the present invention, high temperature performance and water repelling property are all fine.
Material proportion is described as follows:
Palmiticacid: phenylformic acid: aluminum isopropylate is 1: 1.3: 1
Viscosifying agent accounts for 14.3% of lubricating grease total amount
Base oil accounts for 73.5% of lubricating grease total amount
The chilling oil mass accounts for 38.9% of base oil total amount
Adding the tap water equivalent is normal 1 times of aluminum isopropylate
Ptfe micropowder accounts for 12.2% of lubricating grease total amount
The lab work of this example in the simultaneous verification of the high temperature performance of having verified lubricating grease, water repelling property the rubber compatibility of lubricating grease, drinking water safety performance.
Example 7:
With stearic acid 173 grams, it is 500mm that alkyl substituted benzoic acid 109 grams join 1000 gram viscosity
2In the food grade synthetic oil of/s, be heated to 70 ℃, add aluminum isopropylate 149.0 grams, rise to 100 ℃, reacted 2 hours, continue to be heated to 120 ℃, add 26.3 gram tap water, constant temperature 1 hour continues material to be warming up to 180 ℃, constant temperature 40 minutes, add quenching oil 500 gram food grade synthetic oils, when temperature is reduced to below 130 ℃, add ptfe micropowder 250 grams, carry out aftertreatment after stirring evenly and get finished product fat.The PERFORMANCE OF GREASES that technical recipe of the present invention makes is listed in the table below:
As seen from the above table, the rubber compatibility of lubricating grease of the present invention, high temperature performance and water repelling property are all fine.
Material proportion is described as follows:
Stearic acid: alkyl substituted benzoic acid: aluminum isopropylate is 1: 1.4: 1.2
Viscosifying agent accounts for 13.7% of lubricating grease total amount
Base oil accounts for 74.0% of lubricating grease total amount
The chilling oil mass accounts for 33.3% of base oil total amount
Adding the tap water equivalent is normal 2 times of aluminum isopropylate
Ptfe micropowder accounts for 12.3% of lubricating grease total amount
The lab work of this example in the simultaneous verification of the high temperature performance of having verified lubricating grease, water repelling property the rubber compatibility of lubricating grease, drinking water safety performance.
Example 8:
With Palmiticacid 150 grams, it is 50mm that alkyl substituted benzoic acid 129 grams join 1700 gram viscosity
2In the food grade mineral oil of/s, be heated to 85 ℃, add three Virahols, three oxygen aluminium, 197.0 grams, rise to 100 ℃, reacted 1.5 hours, continue to be heated to 130 ℃, add 17.4 gram tap water, constant temperature 2 hours continues material to be warming up to 180 ℃, constant temperature 50 minutes, add quenching oil 800 gram food grade mineral oil, when temperature is reduced to below 120 ℃, add ptfe micropowder 500 grams, carry out aftertreatment after stirring evenly and get finished product fat.The PERFORMANCE OF GREASES that technical recipe of the present invention makes is listed in the table below:
As seen from the above table, the rubber compatibility of lubricating grease of the present invention, high temperature performance and water repelling property are all fine.
Material proportion is described as follows:
Palmiticacid: alkyl substituted benzoic acid: three Virahols, three oxygen aluminium are 1: 1.6: 1.1
Viscosifying agent accounts for 8.5% of lubricating grease total amount
Base oil accounts for 76.3% of lubricating grease total amount
The chilling oil mass accounts for 32% of base oil total amount
Adding the tap water equivalent is normal 1.5 times of aluminum isopropylate
Ptfe micropowder accounts for 15.2% of lubricating grease total amount
The lab work of this example in the simultaneous verification of the high temperature performance of having verified lubricating grease, water repelling property the rubber compatibility of lubricating grease, drinking water safety performance.
Adopt the lubricating grease of present embodiment 1,2,3,4,5,6,7 and 8 and the performance of existing Vaseline and industrial grease relatively to find out:
(1) eight sample and SBR and EPDM rubber are had an effect hardly, and the quality of rubber, volume and hardness change very little, and significantly better than Vaseline and industrial grease, this and lubricating grease of the present invention have good rubber compatibility and has consistence.
(2) eight sample long period of soaking almost do not have oil reservoir to separate out in water, and significantly better than suds, vegetables oil, Vaseline and industrial grease, this and lubricating grease of the present invention have good water resisting property and has consistence.
-20 ℃ of cone penetrations of (3) eight samples are all bigger, and compare variation not quite with 25 ℃ of cone penetrations, and this and lubricating grease of the present invention have good low-temperature performance and has consistence, and this aspect performance is significantly better than suds, vegetables oil, Vaseline and industrial grease; The dropping point of eight samples is all very high, and significantly better than Vaseline and industrial grease, this and lubricating grease of the present invention have the good high-temperature performance and has consistence.
(4) as can be seen from the table, lubricating grease of the present invention has good rubber compatibility to water hygiene safety, is suitable for the lubricated and sealing of drinking water pipeline and valve under the high/low temperature condition.
A kind of drinking water pipeline and valve lubricating grease and preparation method that the present invention proposes, be described by preferred embodiment, person skilled obviously can be in not breaking away from content of the present invention, spirit and scope to component as herein described with method is changed or suitably change and combination, realize the technology of the present invention.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are regarded as being included in spirit of the present invention, scope and the content.
Claims (9)
1. food grade lubricating grease is characterized in that component and weight percentage are as follows:
Base oil: 70～80%;
Viscosifying agent: 6～15%;
Anti-wear agent: 10～20%;
Base oil comprises food grade mineral oil, synthetic oil or both mixed oils;
Viscosifying agent is by C
16-C
20The reactant of longer chain fatty acid, aromatic acid and organoaluminum form; The mol ratio of three kinds of raw materials is 1: (1～1.7): (1～1.2);
Anti-wear agent is the food grade ptfe micropowder.
2. food grade lubricating grease as claimed in claim 1 is characterized in that described base oil viscosity in the time of 100 ℃ is 10～1000mm
2/ s.
3. food grade lubricating grease as claimed in claim 1 is characterized in that described viscosifying agent C
16-C
20Lipid acid comprise stearic acid, ten dihydroxystearic acids or Palmiticacid.
4. food grade lubricating grease as claimed in claim 1 is characterized in that described aromatic acid comprises phenylformic acid or alkyl substituted benzoic acid.
5. food grade lubricating grease as claimed in claim 1 is characterized in that described organoaluminum comprises aluminum isopropylate or three Virahols, three oxygen aluminium.
6. food grade lubricating grease as claimed in claim 1 is characterized in that described each component of food grade lubricating grease meets the HX-1 approval and requires or the FDA standard.
7. food grade preparation of greases method is characterized in that step is as follows:
1) lipid acid, aromatic acid, organoaluminum are joined in the base oil in proportion, be mixed and heated to 60～100 ℃, carry out complex reaction, the reaction times is 1～2 hour;
2) with 1) the compound material continue to be warming up to 100～140 ℃, add the tap water of certain proportioning, water equivalent is normal 1～3 times an of organoaluminum, constant temperature 1～2 hour;
3) with 2) the compound material continued to be warming up to 150～180 ℃ of constant temperature 0.5～1 hour; Add quenching oil then and stir, the chilling oil mass accounts for 30%～40% of total basic oil mass;
4) with 3) material further be cooled to below 140 ℃ to add and promptly get required product after carrying out after anti-wear agent stirs.
8. the application of food grade lubricating grease is characterized in that being applied to the installation of edible equipment.
9. the application of food grade lubricating grease as claimed in claim 8 is characterized in that edible equipment is drinking water pipeline or valve.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105331433A (en) * | 2015-11-11 | 2016-02-17 | 江苏龙蟠科技股份有限公司 | High-temperature lubricating grease for food processing and preparation method thereof |
| CN105647618A (en) * | 2016-03-02 | 2016-06-08 | 苏州华冲精密机械有限公司 | Lubricant for food machinery |
| CN107164058A (en) * | 2017-06-15 | 2017-09-15 | 水利部水工金属结构质量检验测试中心 | Hydraulic engineering food-grade steel wire rope surface lubrication fat, its preparation method and application |
| CN107446665A (en) * | 2017-08-14 | 2017-12-08 | 吴江华威特种油有限公司 | A kind of antibacterial anti-corrosion grease of food-grade and preparation method thereof |
| CN107653030A (en) * | 2017-10-20 | 2018-02-02 | 中国石油化工股份有限公司 | A kind of high temperature water resistant food-grade lubricant composition and preparation method thereof |
| CN107686763A (en) * | 2017-08-24 | 2018-02-13 | 中国石油化工股份有限公司 | Hydraulic engineering food-grade bearing grease and preparation method and application |
| CN109679736A (en) * | 2018-12-25 | 2019-04-26 | 泰伦特生物工程股份有限公司 | A kind of high temperature thermal reversibility complex soap grease and preparation method thereof |
| CN111394163A (en) * | 2020-04-28 | 2020-07-10 | 江南大学 | Food-grade lubricating grease and preparation method thereof |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN105331433A (en) * | 2015-11-11 | 2016-02-17 | 江苏龙蟠科技股份有限公司 | High-temperature lubricating grease for food processing and preparation method thereof |
| CN105647618A (en) * | 2016-03-02 | 2016-06-08 | 苏州华冲精密机械有限公司 | Lubricant for food machinery |
| CN107164058B (en) * | 2017-06-15 | 2018-07-24 | 水利部水工金属结构质量检验测试中心 | Hydraulic engineering food-grade steel wire rope surface lubrication fat, preparation method and application |
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| CN107446665A (en) * | 2017-08-14 | 2017-12-08 | 吴江华威特种油有限公司 | A kind of antibacterial anti-corrosion grease of food-grade and preparation method thereof |
| CN107686763A (en) * | 2017-08-24 | 2018-02-13 | 中国石油化工股份有限公司 | Hydraulic engineering food-grade bearing grease and preparation method and application |
| CN107653030A (en) * | 2017-10-20 | 2018-02-02 | 中国石油化工股份有限公司 | A kind of high temperature water resistant food-grade lubricant composition and preparation method thereof |
| CN107653030B (en) * | 2017-10-20 | 2020-10-09 | 中国石油化工股份有限公司 | High-temperature water-resistant food-grade lubricating grease composition and preparation method thereof |
| CN109679736A (en) * | 2018-12-25 | 2019-04-26 | 泰伦特生物工程股份有限公司 | A kind of high temperature thermal reversibility complex soap grease and preparation method thereof |
| CN111394163A (en) * | 2020-04-28 | 2020-07-10 | 江南大学 | Food-grade lubricating grease and preparation method thereof |
| CN111394163B (en) * | 2020-04-28 | 2021-08-24 | 江南大学 | Food-grade lubricating grease and preparation method thereof |
| WO2021217908A1 (en) * | 2020-04-28 | 2021-11-04 | 江南大学 | Food-grade lubricating grease and preparation method therefor |
| US20230068690A1 (en) * | 2020-04-28 | 2023-03-02 | Jiangnan University | Food-grade Lubricating Grease and Method for Preparing Same |
| US11965141B2 (en) * | 2020-04-28 | 2024-04-23 | Jiangnan University | Food-grade lubricating grease and method for preparing same |
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