CN109112556A - Neutral rust remover and preparation method thereof - Google Patents
Neutral rust remover and preparation method thereof Download PDFInfo
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- CN109112556A CN109112556A CN201810958788.5A CN201810958788A CN109112556A CN 109112556 A CN109112556 A CN 109112556A CN 201810958788 A CN201810958788 A CN 201810958788A CN 109112556 A CN109112556 A CN 109112556A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
Abstract
The invention discloses neutral rust removers and preparation method thereof, including following components for amounting to 100 parts by weight: acidic materials, surfactant, chelating agent, absorption, the substance and OP-10 for storing H+, pH value 6-7 of the present invention, do not corrode metal base, it is environmentally protective, do not corrode container, derusting rear surface is bright and clean, it is suitble to electronic component, the derusting in the fields such as accurate high-end component.
Description
Technical field
The present invention relates to rust remover fields, and in particular to a kind of neutrality rust remover and preparation method thereof.
Background technique
Corrosion is one of the principal mode for destroying metal product, according to statistics, straight due to caused by metal erosion every year
Economic loss accounts for about total value of production in national economy 2%~4% is connect, the corrosion condition of especially steel product is even more serious, to keep away
Exempt from corrosion, reduce loss, the industries such as intermetallic composite coating, machine-building are being sprayed, are being electroplated, before the processes such as plastic-spraying at present, and one
As will use rust remover the metal surface of processing handled, to improve the adhesive force and rust-preventing characteristic of film, to metal product
Taking derusting before various anti-corrosion measures is primary processing step, and derusting generally divides mechanical derusting and chemistry to remove in industry cleaning link
Rust, wherein mechanical derusting large labor intensity, derusting effect is poor, easy damaged substrate, with the presence of dead angle (equipment handle less than side
Angle), generate noise, dust pollution weight；And conventional chemical treatment rust remover be all it is acid, go the same of removing rust cleaning
When, can also corrosion be caused to metal surface, cause new corrosion, therefore, when using conventional acid rust remover, generally also need
Corrosion inhibiter is cooperated to use simultaneously, use is troublesome in poeration, and the discharge of cleaning solution will also result in environmental pollution after derusting, increases row
Put processing cost.
Summary of the invention
An object of the present invention there is provided do not corrode metal base, have no irritating odor, without any noxious material,
Without heavy metal, without VOC and to neutral rust remover of no damage to human body and preparation method thereof.
The neutrality rust remover, including following components for amounting to 100 parts by weight:
Preferably, the acidic materials by 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine,
The combination of one or more of amidosulphuric acid, maleic acid and acetolactate.
Preferably, the surfactant is by sodium n-alkylbenzenesulfonate, α-sodium olefin sulfonate, fatty alcohol, polyoxy second
The combination of one or more of alkene ether, sodium sulphate and lauryl sodium sulfate.
Preferably, the absorption, the substance of storage H+ are one or more of by sodium phosphate, disodium hydrogen phosphate, lemon acid amide
Combination.
Preferably, the chelating agent is by sodium tripolyphosphate, sodium citrate, sodium gluconate, EDTA-2Na and EDTA-
4Na one or more combination.
Preferably, the neutral rust remover includes following components for amounting to 100 parts by weight:
The preparation method of neutral rust remover, comprising the following steps:
Step 1: preparing 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine, amidosulphuric acid, horse
Come sour, acetolactate, sodium n-alkylbenzenesulfonate, α-sodium olefin sulfonate, fatty alcohol, polyoxyethylene ether, sodium sulphate, dodecyl
Sodium sulphate, sodium phosphate, disodium hydrogen phosphate, lemon acid amide, by sodium tripolyphosphate, sodium citrate, sodium gluconate, EDTA-2Na,
EDTA-4Na, OP-10 and water add up to 100 parts by weight.
Step 2: the water of surplus is poured into stirred tank.
Step 3: pouring into 1-hydroxy ethylidene-1,1-diphosphonic acid 10-20 parts by weight, ethylenediamine tetra-acetic acid 5-10 parts by weight, ethylenediamine tetraacetic
Acetic acid 5-10 parts by weight, citric acid 5-10 parts by weight, citric acid monoamine 5-10 parts by weight, amidosulphuric acid 5-10 parts by weight, Malaysia
Sour 5-10 parts by weight and acetolactate 5-10 parts by weight are poured into stirred tank successively, and one of the above or several combinations and total amount are most
It is no more than 30 parts by weight more, stirs 10min using blender 300r/min revolving speed.
Step 4: stirred evenly to previous step, after standing 1 minute, pour into sodium n-alkylbenzenesulfonate 1-2 parts by weight,
α-sodium olefin sulfonate 0.5-1.5 parts by weight, fatty alcohol 1-3 parts by weight, polyoxyethylene ether 0.5-1 parts by weight, sodium sulphate 0.5-1 weight
Amount part and lauryl sodium sulfate 1-2 parts by weight pour into stirred tank successively, one of the above or it is several combination and total amount it is most
No more than 5 parts by weight, 3min is stirred using blender 400r/min revolving speed.
Step 5: pouring into sodium tripolyphosphate 0.5-2 parts by weight, sodium citrate 1-2 parts by weight, sodium gluconate 0.5-1 weight
Amount part, EDTA-2Na1-3 parts by weight and EDTA-4Na1-3 parts by weight are poured into stirred tank successively, one of the above or several groups
It closes and total amount is no more than 5 parts by weight, stir 3min using blender 250r/min revolving speed.
Step 6: the OP-10 for pouring into 0.5-1 parts by weight enters stirred tank.
Step 7: pouring into sodium phosphate 10-30 parts by weight, disodium hydrogen phosphate 15-30 parts by weight, lemon acid amide 10-30 weight
Part is poured into stirred tank, and one of the above or several combinations and total amount are no more than 40 parts by weight, uses blender 350r/
Min revolving speed stirs 3min.
The invention has the benefit that pH value 6-7 of the present invention, environmentally protective, do not corrode container, derusting rear surface is bright and clean,
It is suitble to electronic component, the derusting in the fields such as accurate high-end component does not corrode metal base, has no irritating odor, without a huge sum of money
Belong to, be free of VOC, meets European Union WEEE&RoHS instruction and require.
Specific embodiment
Below with reference to embodiment, invention is further described in detail, but the scope of the present invention is not limited in described
Hold.
Case 1 is embodied are as follows: neutral rust remover, including following components for amounting to 100 parts by weight:
The acidic materials are by 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine, amino sulphur
The combination of one or more of acid, maleic acid and acetolactate.
The surfactant is by sodium n-alkylbenzenesulfonate, α-sodium olefin sulfonate, fatty alcohol, polyoxyethylene ether, sulphur
The combination of one or more of sour sodium and lauryl sodium sulfate.
The substance of the absorption, storage H+ is by sodium phosphate, disodium hydrogen phosphate, lemon acid amide one or more combination.
The chelating agent is by sodium tripolyphosphate, sodium citrate, sodium gluconate, EDTA-2Na and EDTA-4Na are a kind of or
Several combinations.
The preparation method of neutral rust remover, comprising the following steps:
Step 1: preparing 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine, amidosulphuric acid, horse
Come sour, acetolactate, sodium n-alkylbenzenesulfonate, α-sodium olefin sulfonate, fatty alcohol, polyoxyethylene ether, sodium sulphate, dodecyl
Sodium sulphate, sodium phosphate, disodium hydrogen phosphate, lemon acid amide, by sodium tripolyphosphate, sodium citrate, sodium gluconate, EDTA-2Na,
EDTA-4Na, OP-10 and water add up to 100 parts by weight.
Step 2: the water of surplus is poured into stirred tank.
Step 3: pouring into 10 parts by weight of 1-hydroxy ethylidene-1,1-diphosphonic acid, 5 parts by weight of ethylenediamine tetra-acetic acid, 5 weight of ethylenediamine tetra-acetic acid
Measure part, 5 parts by weight of citric acid, 5 parts by weight of citric acid monoamine, 5 parts by weight of amidosulphuric acid, 5 parts by weight of maleic acid and acetolactate 5
Parts by weight are poured into stirred tank successively, and one of the above or several combinations and total amount are no more than 30 parts by weight, use stirring
Machine 300r/min revolving speed stirs 10min.
Step 4: stirring evenly to previous step, after standing 1 minute, 1 parts by weight of sodium n-alkylbenzenesulfonate, α-are poured into
0.5 parts by weight of sodium olefin sulfonate, 1 parts by weight of fatty alcohol, 0.5 parts by weight of polyoxyethylene ether, 0.5 parts by weight of sodium sulphate and dodecane
1 parts by weight of base sodium sulphate are poured into stirred tank successively, and one of the above or several combinations and total amount are no more than 5 parts by weight,
3min is stirred using blender 400r/min revolving speed.
Step 5: pour into 0.5 parts by weight of sodium tripolyphosphate, 1 parts by weight of sodium citrate, 0.5 parts by weight of sodium gluconate,
EDTA-2Na1 parts by weight and EDTA-4Na1 parts by weight are poured into stirred tank successively, and one of the above or several combinations and total amount are most
It is no more than 5 parts by weight more, stirs 3min using blender 250r/min revolving speed.
Step 6: the OP-10 for pouring into 0.5 parts by weight enters stirred tank.
It is poured into successively step 7: pouring into 10 parts by weight of sodium phosphate, 15 parts by weight of disodium hydrogen phosphate, 10 parts by weight of lemon acid amide
In stirred tank, one of the above or several combinations and total amount are no more than 40 parts by weight, use blender 350r/min revolving speed
Stir 3min.
Case 2 is embodied are as follows: neutral rust remover, including following components for amounting to 100 parts by weight:
The acidic materials are by 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine, amino sulphur
The combination of one or more of acid, maleic acid and acetolactate.
The surfactant is by sodium n-alkylbenzenesulfonate, α-sodium olefin sulfonate, fatty alcohol, polyoxyethylene ether, sulphur
The combination of one or more of sour sodium and lauryl sodium sulfate.
The substance of the absorption, storage H+ is by sodium phosphate, disodium hydrogen phosphate, lemon acid amide one or more combination.
The chelating agent is by sodium tripolyphosphate, sodium citrate, sodium gluconate, EDTA-2Na and EDTA-4Na are a kind of or
Several combinations.
The preparation method of neutral rust remover, comprising the following steps:
Step 1: preparing 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine, amidosulphuric acid, horse
Come sour, acetolactate, sodium n-alkylbenzenesulfonate, α-sodium olefin sulfonate, fatty alcohol, polyoxyethylene ether, sodium sulphate, dodecyl
Sodium sulphate, sodium phosphate, disodium hydrogen phosphate, lemon acid amide, by sodium tripolyphosphate, sodium citrate, sodium gluconate, EDTA-2Na,
EDTA-4Na, OP-10 and water add up to 100 parts by weight.
Step 2: the water of surplus is poured into stirred tank.
Step 3: pouring into 15 parts by weight of 1-hydroxy ethylidene-1,1-diphosphonic acid, 7 parts by weight of ethylenediamine tetra-acetic acid, 7 weight of ethylenediamine tetra-acetic acid
Measure part, 8 parts by weight of citric acid, 6 parts by weight of citric acid monoamine, 7 parts by weight of amidosulphuric acid, 6 parts by weight of maleic acid and acetolactate 8
Parts by weight are poured into stirred tank successively, and one of the above or several combinations and total amount are no more than 30 parts by weight, use stirring
Machine 300r/min revolving speed stirs 10min.
Step 4: stirred evenly to previous step, after standing 1 minute, pour into 1.5 parts by weight of sodium n-alkylbenzenesulfonate,
1 parts by weight of α-sodium olefin sulfonate, 2 parts by weight of fatty alcohol, 0.7 parts by weight of polyoxyethylene ether, 0.7 parts by weight of sodium sulphate and dodecane
1.5 parts by weight of base sodium sulphate are poured into stirred tank successively, and one of the above or several combinations and total amount are no more than 5 weight
Part, 3min is stirred using blender 400r/min revolving speed.
Step 5: pour into 1 parts by weight of sodium tripolyphosphate, 1.5 parts by weight of sodium citrate, 0.7 parts by weight of sodium gluconate,
EDTA-2Na2 parts by weight and EDTA-4Na2 parts by weight are poured into stirred tank successively, and one of the above or several combinations and total amount are most
It is no more than 5 parts by weight more, stirs 3min using blender 250r/min revolving speed.
Step 6: the OP-10 for pouring into 0.7 parts by weight enters stirred tank.
It is poured into successively step 7: pouring into 24 parts by weight of sodium phosphate, 22 parts by weight of disodium hydrogen phosphate, 15 parts by weight of lemon acid amide
In stirred tank, one of the above or several combinations and total amount are no more than 40 parts by weight, use blender 350r/min revolving speed
Stir 3min.
Case 3 is embodied are as follows: neutral rust remover, including following components for amounting to 100 parts by weight:
The acidic materials are by 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine, amino sulphur
The combination of one or more of acid, maleic acid and acetolactate.
The surfactant is by sodium n-alkylbenzenesulfonate, α-sodium olefin sulfonate, fatty alcohol, polyoxyethylene ether, sulphur
The combination of one or more of sour sodium and lauryl sodium sulfate.
The substance of the absorption, storage H+ is by sodium phosphate, disodium hydrogen phosphate, lemon acid amide one or more combination.
The chelating agent is by sodium tripolyphosphate, sodium citrate, sodium gluconate, EDTA-2Na and EDTA-4Na are a kind of or
Several combinations.
The preparation method of neutral rust remover, comprising the following steps:
Step 1: preparing 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine, amidosulphuric acid, horse
Come sour, acetolactate, sodium n-alkylbenzenesulfonate, α-sodium olefin sulfonate, fatty alcohol, polyoxyethylene ether, sodium sulphate, dodecyl
Sodium sulphate, sodium phosphate, disodium hydrogen phosphate, lemon acid amide, by sodium tripolyphosphate, sodium citrate, sodium gluconate, EDTA-2Na,
EDTA-4Na, OP-10 and water add up to 100 parts by weight.
Step 2: the water of surplus is poured into stirred tank.
Step 3: pouring into 20 parts by weight of 1-hydroxy ethylidene-1,1-diphosphonic acid, 10 parts by weight of ethylenediamine tetra-acetic acid, ethylenediamine tetra-acetic acid 10
Parts by weight, 10 parts by weight of citric acid, 10 parts by weight of citric acid monoamine, 10 parts by weight of amidosulphuric acid, 10 parts by weight of maleic acid and second
Yogurt 10 parts by weight of acid are poured into stirred tank successively, and one of the above or several combinations and total amount are no more than 30 parts by weight,
10min is stirred using blender 300r/min revolving speed.
Step 4: stirring evenly to previous step, after standing 1 minute, 2 parts by weight of sodium n-alkylbenzenesulfonate, α-are poured into
1.5 parts by weight of sodium olefin sulfonate, 3 parts by weight of fatty alcohol, 1 parts by weight of polyoxyethylene ether, 1 parts by weight of sodium sulphate and dodecyl sulphur
Sour 2 parts by weight of sodium are poured into stirred tank successively, and one of the above or several combinations and total amount are no more than 5 parts by weight, are used
Blender 400r/min revolving speed stirs 3min.
Step 5: pouring into 2 parts by weight of sodium tripolyphosphate, 2 parts by weight of sodium citrate, 1 parts by weight of sodium gluconate, EDTA-
2Na1-3 parts by weight and EDTA-4Na1-3 parts by weight are poured into stirred tank successively, and one of the above or several combinations and total amount are most
It is no more than 5 parts by weight more, stirs 3min using blender 250r/min revolving speed.
Step 6: the OP-10 for pouring into 0.1 parts by weight enters stirred tank.
It is poured into successively step 7: pouring into 30 parts by weight of sodium phosphate, 30 parts by weight of disodium hydrogen phosphate, 30 parts by weight of lemon acid amide
In stirred tank, one of the above or several combinations and total amount are no more than 40 parts by weight, use blender 350r/min revolving speed
Stir 3min.
PH value 6-7 of the present invention, it is environmentally protective, do not corrode container, derusting rear surface is bright and clean, is suitble to electronic component, accurate high
The derusting in the fields such as end member device, does not corrode metal base, has no irritating odor, and is free of heavy metal, is free of VOC, meets European Union
WEEE&RoHS instruction requires.
When use: directly the workpiece to get rusty being put into fluid present invention and is impregnated, soaking time is according to the corrosion-resistant of workpiece
Degree is determined, and the range of soaking time is -4 hours 5 minutes, after having impregnated, workpiece is taken out, cleaning and rinsing 1-10 minutes, dries in the air
It is dry.
Claims (7)
1. neutral rust remover, which is characterized in that including following components for amounting to 100 parts by weight:
2. neutrality rust remover according to claim 1, which is characterized in that the acidic materials are by 1-hydroxy ethylene-1,1-diphosphonic
One or more of acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine, amidosulphuric acid, maleic acid and acetolactate group
It closes.
3. neutrality rust remover according to claim 1, which is characterized in that the surfactant is by linear alkylbenzene (LAB) sulphur
The combination of one or more of sour sodium, α-sodium olefin sulfonate, fatty alcohol, polyoxyethylene ether, sodium sulphate and lauryl sodium sulfate.
4. neutrality rust remover according to claim 1, which is characterized in that the substance of the absorption, storage H+ is by phosphoric acid
Sodium, disodium hydrogen phosphate, lemon acid amide one or more combination.
5. neutrality rust remover according to claim 1, which is characterized in that the chelating agent is by sodium tripolyphosphate, lemon
Sour sodium, sodium gluconate, EDTA-2Na and EDTA-4Na one or more combination.
6. neutrality rust remover according to claim 1, which is characterized in that the neutral rust remover includes following totals
The component of 100 parts by weight:
7. the preparation method of neutral rust remover, which comprises the following steps:
Step 1: prepare 1-hydroxy ethylidene-1,1-diphosphonic acid, ethylenediamine tetra-acetic acid, citric acid, citric acid monoamine, amidosulphuric acid, maleic acid,
Acetolactate, sodium n-alkylbenzenesulfonate, α-sodium olefin sulfonate, fatty alcohol, polyoxyethylene ether, sodium sulphate, dodecyl sulphate
Sodium, sodium phosphate, disodium hydrogen phosphate, lemon acid amide, by sodium tripolyphosphate, sodium citrate, sodium gluconate, EDTA-2Na, EDTA-
4Na, OP-10 and water add up to 100 parts by weight.
Step 2: the water of surplus is poured into stirred tank.
Step 3: pouring into 1-hydroxy ethylidene-1,1-diphosphonic acid 10-20 parts by weight, ethylenediamine tetra-acetic acid 5-10 parts by weight, ethylenediamine tetra-acetic acid
5-10 parts by weight, citric acid 5-10 parts by weight, citric acid monoamine 5-10 parts by weight, amidosulphuric acid 5-10 parts by weight, maleic acid 5-
10 parts by weight and acetolactate 5-10 parts by weight are poured into stirred tank successively, and one of the above or several combinations and total amount are at most not
More than 30 parts by weight, 10min is stirred using blender 300r/min revolving speed.
Step 4: stirring evenly to previous step, after standing 1 minute, sodium n-alkylbenzenesulfonate 1-2 parts by weight, α-alkene are poured into
Base sodium sulfonate 0.5-1.5 parts by weight, fatty alcohol 1-3 parts by weight, polyoxyethylene ether 0.5-1 parts by weight, sodium sulphate 0.5-1 parts by weight
It is poured into stirred tank successively with lauryl sodium sulfate 1-2 parts by weight, one of the above or several combinations and total amount do not surpass at most
5 parts by weight are crossed, stir 3min using blender 400r/min revolving speed.
Step 5: pour into sodium tripolyphosphate 0.5-2 parts by weight, sodium citrate 1-2 parts by weight, sodium gluconate 0.5-1 parts by weight,
EDTA-2Na1-3 parts by weight and EDTA-4Na1-3 parts by weight are poured into stirred tank successively, one of the above or several combinations and total
Amount is no more than 5 parts by weight, stirs 3min using blender 250r/min revolving speed.
Step 6: the OP-10 for pouring into 0.5-1 parts by weight enters stirred tank.
Step 7: pouring into sodium phosphate 10-30 parts by weight, disodium hydrogen phosphate 15-30 parts by weight, lemon acid amide 10-30 parts by weight land
Continuous to pour into stirred tank, one of the above or several combinations and total amount are no more than 40 parts by weight, use blender 350r/
Min revolving speed stirs 3min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810958788.5A CN109112556A (en) | 2018-08-22 | 2018-08-22 | Neutral rust remover and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958788.5A CN109112556A (en) | 2018-08-22 | 2018-08-22 | Neutral rust remover and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111304020A (en) * | 2020-04-12 | 2020-06-19 | 长沙汇泉环境科技有限公司 | Neutral nontoxic cleaning agent and preparation method thereof |
| CN111996537A (en) * | 2020-08-31 | 2020-11-27 | 立邦涂料（重庆）化工有限公司 | Neutral degreasing agent and preparation method thereof |
| CN112176355A (en) * | 2020-10-23 | 2021-01-05 | 山东大学 | Environment-friendly neutral rust remover and preparation method thereof |
| CN114561646A (en) * | 2022-02-25 | 2022-05-31 | 上海皕滢生物科技有限公司 | Efficient rust remover for medical instruments and preparation method thereof |
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| CN103590060A (en) * | 2013-11-27 | 2014-02-19 | 上海斯瑞文特种油品科技有限公司 | Novel efficient and environment-friendly neutral deruster and preparation process thereof |
| CN104264173A (en) * | 2014-09-22 | 2015-01-07 | 合肥绿洁环保科技有限公司 | Environment-friendly neutral oil-removing rust-removing passivator and preparation method thereof |
| CN106757095A (en) * | 2016-12-20 | 2017-05-31 | 粟飞 | A kind of neutral rust remover |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103590060A (en) * | 2013-11-27 | 2014-02-19 | 上海斯瑞文特种油品科技有限公司 | Novel efficient and environment-friendly neutral deruster and preparation process thereof |
| CN104264173A (en) * | 2014-09-22 | 2015-01-07 | 合肥绿洁环保科技有限公司 | Environment-friendly neutral oil-removing rust-removing passivator and preparation method thereof |
| CN106757095A (en) * | 2016-12-20 | 2017-05-31 | 粟飞 | A kind of neutral rust remover |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111304020A (en) * | 2020-04-12 | 2020-06-19 | 长沙汇泉环境科技有限公司 | Neutral nontoxic cleaning agent and preparation method thereof |
| CN111996537A (en) * | 2020-08-31 | 2020-11-27 | 立邦涂料（重庆）化工有限公司 | Neutral degreasing agent and preparation method thereof |
| CN112176355A (en) * | 2020-10-23 | 2021-01-05 | 山东大学 | Environment-friendly neutral rust remover and preparation method thereof |
| CN112176355B (en) * | 2020-10-23 | 2022-05-17 | 山东大学 | Environment-friendly neutral rust remover and preparation method thereof |
| CN114561646A (en) * | 2022-02-25 | 2022-05-31 | 上海皕滢生物科技有限公司 | Efficient rust remover for medical instruments and preparation method thereof |
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Application publication date: 20190101 |
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