CN103603003A - Environmental protection type metal detergency liquid - Google Patents
Environmental protection type metal detergency liquid Download PDFInfo
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- CN103603003A CN103603003A CN201310508506.9A CN201310508506A CN103603003A CN 103603003 A CN103603003 A CN 103603003A CN 201310508506 A CN201310508506 A CN 201310508506A CN 103603003 A CN103603003 A CN 103603003A
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Abstract
The present invention provides an environmental protection type metal detergency liquid with an anti-corrosion function. The environmental protection type metal detergency liquid comprises: 0.3-5% of an antifoaming agent, 1-15% of a cation surfactant, 1-10% of an anion surfactant, 3-15% of a nonionic surfactant, 20-40% of a main cleaning agent, 2-5% of a corrosion inhibitor and the balance of deionized water, wherein the corrosion inhibitor comprises a gemini cation imidazoline quaternary ammonium salt and O',O'-diphenyl dithiophosphonic acid-N,N-diethylamine. The environmental protection type metal detergency liquid is an efficient metal cleaning agent with characteristics of low alkali, low foaming, environmental protection, strong oil removing effect at a low temperature, and low corrosion.
Description
Technical field
The present invention relates to clean-out system technical field, relate in particular to a kind of environment-friendly metal decontamination liquid with corrosion proof function.
Background technology
When the maintenance and repair of machining and mechanical means, automobile etc., mostly adopt diesel oil, coal Water Oil Or Gas to carry out cleaning components as scavenging solution.This not only wastes energy, and exists potential unsafe factor, careless slightly, may lead to fire.In recent years, a kind of novel metal cleaner is widely used gradually, it well diesel oil substitute, kerosene and gasoline carry out cleaning components, and low price, is used safety, is well suited for mechanized cleaning operation.It can be for metal washs, and do not have rust staining.
At present, metal cleaner on the market contains the harmful chemical components such as strong acid, highly basic, phosphoric acid salt and aluminium salt mostly, and these chemical compositions not only can be brought certain infringement to metallic surface, and can cause certain harm to environment, due to complex process, cost is higher simultaneously.
Summary of the invention
Object of the present invention is exactly for the problems referred to above, and a kind of low alkali, low bubble, environmental protection are provided, and has at a lower temperature the effect of deoiling very by force, and the low-down efficient metal decontamination liquid of corrodibility.
The invention provides a kind of metal decontamination liquid, it comprises: defoamer 0.3%～5%, cats product 1%～15%, anion surfactant 1%～10%, nonionogenic tenside 3%～15%, cleaning host 20%～40%, inhibiter 2%～5% and She measure deionized water.
Wherein, described cleaning host consists of sodium phosphate and water glass, and the weight ratio between sodium phosphate and water glass is 2～4:1.
Wherein, described cats product can be one or more mixing in Varisoft TA 100, Trimethyllaurylammonium chloride, methyl-sulfuric acid alkyl trimethyl ammonium, chlorination cocoyl trimethyl ammonium and cetylpyridinium chloride.
Wherein, described anion surfactant can be alkyl carboxylate's (carboxylate salt) and poly-alkoxyl group carboxylate salt, alcohol b-oxide carboxylate salt, nonylphenol ethoxylate carboxylate salt, and analogue; Sulfonate, for example alkylsulfonate, alkylbenzene sulfonate, alkylaryl sulphonate, sulfonated fatty acid ester, and analogue; Vitriol, for example sulfated alcohols, sulfated alcohols b-oxide, sulfation alkylphenol, alkyl-sulphate, sulfosuccinate, sulfated alkyl ether, and analogue; And phosphoric acid ester, for example alkyl phosphate, and analogue.The anion surfactant exemplifying comprises sodium alkylarysulfonate, alpha-alefinically sulfonate and aliphatic alcohol sulfate.
Wherein, described nonionogenic tenside can for for example chloro-, benzyl-, methyl-, ethyl-, propyl group-butyl-and the polyglycol ether of other similar alkyl-blocked fatty alcohol; Do not contain the nonionogenic tenside of polyalkylene oxides, for example alkyl poly glucoside; Anhydro sorbitol and sucrose ester, and b-oxide; Amine oxide, for example alkoxide quadrol; Alcohol alkoxide, alcohol ethoxy propoxide for example, alcohol propoxide, alcohol the third oxygen ethoxy propoxide, alcohol ethoxy fourth oxide compound, and analogue; Nonylphenol ethoxylate, polyoxyethylene glycol ether and analogue; Carboxylicesters, glyceryl ester for example, polyoxyethylene ester, the ethoxyquin of lipid acid and binary alcohol esters, and analogue; Carboxylic acid amide, for example diethanolamine condenses, monoalkanolamine condenses, polyoxyethylene fatty amide, and analogue; And polyalkylene oxide block copolymer, comprising ethylene oxide/propylene oxide segmented copolymer, for example, with trade(brand)name
those that are purchased (BASF-Wyandotte), and analogue; With other similar non-ionic compound.Also can use organic silicon surfactant, for example
Described inhibiter is by Shuangzi positively charged ion imidazoline quaternary ammonium salt and O ', and O '-Diphenyl disulfide is for phosphoric acid-N, and N dimethylamine forms.
Described O ', O '-Diphenyl disulfide is for phosphoric acid-N, and N dimethylamine is as shown in Equation 1.
Described Shuangzi positively charged ion imidazoline quaternary ammonium salt as shown in Equation 2.
Described Shuangzi positively charged ion imidazoline quaternary ammonium salt and O ', O '-Diphenyl disulfide is for phosphoric acid-N, and the mass ratio of N dimethylamine is 1:2～1:4.
The preparation method of described Shuangzi positively charged ion imidazoline quaternary ammonium salt is specially:
The first step, get 34.8g oleic acid and 15.3g diethylenetriamine, 0.2g aluminum trioxide catalyst is put in the there-necked flask that thermometer, reflux condensing tube and water trap are housed, add band aqua dimethylbenzene 40ml simultaneously, adopt 140 ℃, 170 ℃, 220 ℃ ladder-elevating temperature methods, dewater, until no longer include water, generate, be down to 140 ℃ of underpressure distillation, slough dimethylbenzene, generate acid amides cyclisation and obtain tetrahydroglyoxaline intermediate;
Second step, by tetrahydroglyoxaline intermediate and Benzyl Chloride in molar ratio 1:1 join in there-necked flask, load onto prolong and thermometer, stir and be warming up to 90 ℃～110 ℃ reaction 4h, add again epoxy chloropropane 4ml, holding temperature is constant, continues reaction 5h, is cooled to room temperature, obtain crude product, with acetone/isopropanol recrystallization 5 times, 50 ℃ of vacuum-drying 48h, obtain the Shuangzi positively charged ion imidazoline quaternary ammonium salt shown in formula 2.
Described O ', O '-Diphenyl disulfide is for phosphoric acid-N, and the preparation method of N dimethylamine is specially:
By 22.2g thiophosphoric anhydride (0.1mol), 37.6g phenol (0.4mol) joins in 250mL there-necked flask, adds 70mL toluene to make solvent; Gradually temperature is elevated to while stirring to about 100 ℃ reaction 45min; Heat up again until reflux, backflow 3h, in reaction process, solid fades away; Solution is slightly cold, adds a small amount of gac boiling decoloring, filtered while hot, and filtrate is cooled to room temperature; Gained filtrate is transferred in beaker, and water-bath is cooling and under agitation dropwise drip 22mL diethylamine (0.2mol), and reaction system is emitted a large amount of heat, liquid color gradually becomes orange, use glass stick rapid stirring, have precipitation to produce, one night of static placement under room temperature; Filtration under diminished pressure, by toluene wash, to white, product is white needle-like crystals; Toluene recrystallization, filtration under diminished pressure, vacuum-drying, obtains white crystal, obtains.
Wherein, described defoamer is selected from one or more in octanol, mineral oil, tributyl phosphate.
Beneficial effect of the present invention:
Metal decontamination liquid provided by the invention has the advantage of low alkali, low bubble, environmental protection, have at a lower temperature the effect of deoiling very by force, and corrodibility is very low.
Embodiment
The invention provides a kind of metal decontamination liquid, it comprises: defoamer 0.3%～5%, cats product 1%～15%, anion surfactant 1%～10%, nonionogenic tenside 3%～15%, cleaning host 20%～40%, inhibiter 2%～5% and She measure deionized water.
Described cleaning host consists of sodium phosphate and water glass, and the weight ratio between sodium phosphate and water glass is 2～4:1.
Described cats product can be one or more mixing in Varisoft TA 100, Trimethyllaurylammonium chloride, methyl-sulfuric acid alkyl trimethyl ammonium, chlorination cocoyl trimethyl ammonium and cetylpyridinium chloride.
Described anion surfactant can be alkyl carboxylate's (carboxylate salt) and poly-alkoxyl group carboxylate salt, alcohol b-oxide carboxylate salt, nonylphenol ethoxylate carboxylate salt, and analogue; Sulfonate, for example alkylsulfonate, alkylbenzene sulfonate, alkylaryl sulphonate, sulfonated fatty acid ester, and analogue; Vitriol, for example sulfated alcohols, sulfated alcohols b-oxide, sulfation alkylphenol, alkyl-sulphate, sulfosuccinate, sulfated alkyl ether, and analogue; And phosphoric acid ester, for example alkyl phosphate, and analogue.The anion surfactant exemplifying comprises sodium alkylarysulfonate, alpha-alefinically sulfonate and aliphatic alcohol sulfate.
Described nonionogenic tenside can for for example chloro-, benzyl-, methyl-, ethyl-, propyl group-butyl-and the polyglycol ether of other similar alkyl-blocked fatty alcohol; Do not contain the nonionogenic tenside of polyalkylene oxides, for example alkyl poly glucoside; Anhydro sorbitol and sucrose ester, and b-oxide; Amine oxide, for example alkoxide quadrol; Alcohol alkoxide, alcohol ethoxy propoxide for example, alcohol propoxide, alcohol the third oxygen ethoxy propoxide, alcohol ethoxy fourth oxide compound, and analogue; Nonylphenol ethoxylate, polyoxyethylene glycol ether and analogue; Carboxylicesters, glyceryl ester for example, polyoxyethylene ester, the ethoxyquin of lipid acid and binary alcohol esters, and analogue; Carboxylic acid amide, for example diethanolamine condenses, monoalkanolamine condenses, polyoxyethylene fatty amide, and analogue; And polyalkylene oxide block copolymer, comprising ethylene oxide/propylene oxide segmented copolymer, for example, with trade(brand)name
those that are purchased (BASF-Wyandotte), and analogue; With other similar non-ionic compound.Also can use organic silicon surfactant, for example
Described inhibiter is by Shuangzi positively charged ion imidazoline quaternary ammonium salt and O ', and O '-Diphenyl disulfide is for phosphoric acid-N, and N dimethylamine forms.
Described O ', O '-Diphenyl disulfide is for phosphoric acid-N, and N dimethylamine is as shown in Equation 1.
Described Shuangzi positively charged ion imidazoline quaternary ammonium salt as shown in Equation 2.
Described Shuangzi positively charged ion imidazoline quaternary ammonium salt and O ', O '-Diphenyl disulfide is for phosphoric acid-N, and the mass ratio of N dimethylamine is 1:2～1:4.
The preparation method of described Shuangzi positively charged ion imidazoline quaternary ammonium salt is specially:
The first step, get 34.8g oleic acid and 15.3g diethylenetriamine, 0.2g aluminum trioxide catalyst is put in the there-necked flask that thermometer, reflux condensing tube and water trap are housed, add band aqua dimethylbenzene 40ml simultaneously, adopt 140 ℃, 170 ℃, 220 ℃ ladder-elevating temperature methods, dewater, until no longer include water, generate, be down to 140 ℃ of underpressure distillation, slough dimethylbenzene, generate acid amides cyclisation and obtain tetrahydroglyoxaline intermediate;
Second step, by tetrahydroglyoxaline intermediate and Benzyl Chloride in molar ratio 1:1 join in there-necked flask, load onto prolong and thermometer, stir and be warming up to 90 ℃～110 ℃ reaction 4h, add again epoxy chloropropane 4ml, holding temperature is constant, continues reaction 5h, is cooled to room temperature, obtain crude product, with acetone/isopropanol recrystallization 5 times, 50 ℃ of vacuum-drying 48h, obtain the Shuangzi positively charged ion imidazoline quaternary ammonium salt shown in formula 2.
Described O ', O '-Diphenyl disulfide is for phosphoric acid-N, and the preparation method of N dimethylamine is specially:
By 22.2g thiophosphoric anhydride (0.1mol), 37.6g phenol (0.4mol) joins in 250mL there-necked flask, adds 70mL toluene to make solvent; Gradually temperature is elevated to while stirring to about 100 ℃ reaction 45min; Heat up again until reflux, backflow 3h, in reaction process, solid fades away; Solution is slightly cold, adds a small amount of gac boiling decoloring, filtered while hot, and filtrate is cooled to room temperature; Gained filtrate is transferred in beaker, and water-bath is cooling and under agitation dropwise drip 22mL diethylamine (0.2mol), and reaction system is emitted a large amount of heat, liquid color gradually becomes orange, use glass stick rapid stirring, have precipitation to produce, one night of static placement under room temperature; Filtration under diminished pressure, by toluene wash, to white, product is white needle-like crystals; Toluene recrystallization, filtration under diminished pressure, vacuum-drying, obtains white crystal, obtains sterling.
Described defoamer is selected from one or more in octanol, mineral oil, tributyl phosphate.
The present invention also provides the preparation method of above-mentioned metal decontamination liquid, in deionized water, add in proportion defoamer, cats product, anion surfactant, nonionogenic tenside, cleaning host and inhibiter, stir about 30 minutes, obtain.
Below adopt embodiment to describe embodiments of the present invention in detail, to the present invention, how utilisation technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.
The preparation of embodiment 1 Shuangzi positively charged ion imidazoline quaternary ammonium salt
Get 34.8g oleic acid and 15.3g diethylenetriamine, 0.2g aluminum trioxide catalyst is put in the there-necked flask that thermometer, reflux condensing tube and water trap are housed, add band aqua dimethylbenzene 40ml simultaneously, adopt 140 ℃, 170 ℃, 220 ℃ ladder-elevating temperature methods, dewater, until no longer include water, generate, be down to 140 ℃ of underpressure distillation, slough dimethylbenzene, generate acid amides cyclisation and obtain tetrahydroglyoxaline intermediate; By tetrahydroglyoxaline intermediate and Benzyl Chloride in molar ratio 1:1 join in there-necked flask, load onto prolong and thermometer, stirring is warming up to 90 ℃～110 ℃ reaction 4h, then adds epoxy chloropropane 4ml, and holding temperature is constant, continue reaction 5h, be cooled to room temperature, obtain crude product, use acetone/isopropanol recrystallization 5 times, 50 ℃ of vacuum-drying 48h, obtain Shuangzi positively charged ion imidazoline quaternary ammonium salt.
Embodiment 2O ', O '-Diphenyl disulfide is for phosphoric acid-N, the preparation of N dimethylamine
By 22.2g thiophosphoric anhydride (0.1mol), 37.6g phenol (0.4mol) joins in 250mL there-necked flask, adds 70mL toluene to make solvent; Gradually temperature is elevated to while stirring to about 100 ℃ reaction 45min; Heat up again until reflux, backflow 3h, in reaction process, solid fades away; Solution is slightly cold, adds a small amount of gac boiling decoloring, filtered while hot, and filtrate is cooled to room temperature; Gained filtrate is transferred in beaker, and water-bath is cooling and under agitation dropwise drip 22mL diethylamine (0.2mol), and reaction system is emitted a large amount of heat, liquid color gradually becomes orange, use glass stick rapid stirring, have precipitation to produce, one night of static placement under room temperature; Filtration under diminished pressure, by toluene wash, to white, product is white needle-like crystals; Toluene recrystallization, filtration under diminished pressure, vacuum-drying, obtains white crystal, obtains sterling.
Embodiment 3: metal decontamination liquid 1
Using defoamer tributyl phosphate 2g, cats product Varisoft TA 100 8g, anion surfactant tolyl sodium sulfonate 6g, by name as nonionogenic tenside commodity
silicon surfactant 12g, sodium phosphate 20g and the Shuangzi positively charged ion imidazoline quaternary ammonium salt 1g of water glass 10g, embodiment 1 preparation, the O ' of embodiment 2 preparations, O '-Diphenyl disulfide is for phosphoric acid-N, and N dimethylamine 3g is dissolved in deionized water, stir about 30 minutes, obtain.
Comparative example 1 metal decontamination liquid 2
Using defoamer tributyl phosphate 2g, cats product Varisoft TA 100 8g, anion surfactant tolyl sodium sulfonate 6g, by name as nonionogenic tenside commodity
silicon surfactant 12g, sodium phosphate 20g and the Shuangzi positively charged ion imidazoline quaternary ammonium salt 4g of water glass 10g, embodiment 1 preparation be dissolved in deionized water, stir about 30 minutes, obtain.
Comparative example 2 metal decontamination liquids 3
Using defoamer tributyl phosphate 2g, cats product Varisoft TA 100 8g, anion surfactant tolyl sodium sulfonate 6g, by name as nonionogenic tenside commodity
silicon surfactant 12g, sodium phosphate 20g and the O ' of water glass 10g, embodiment 2 preparations, O '-Diphenyl disulfide is for phosphoric acid-N, N dimethylamine 4g is dissolved in deionized water, stirs about 30 minutes, obtains.
Comparative example 3 metal decontamination liquids 4
Using defoamer tributyl phosphate 2g, cats product Varisoft TA 100 8g, anion surfactant tolyl sodium sulfonate 6g, by name as nonionogenic tenside commodity
silicon surfactant 12g, sodium phosphate 20g and water glass 10g be dissolved in deionized water, stir about 30 minutes, obtain.
The metal decontamination liquid of embodiment 1 and comparative example 1-3 acquisition is carried out to metallic aluminium clean surface greasy dirt and clean, the results are shown in Table 1.
Cleaning rate: the greasy dirt weight/greasy dirt original weight of cleaning rate=wash;
Non-corrosibility: grading standard: 0 grade of surface is rustless, without considerable change.
1 grade of surface is rustless, light discolouration or loss of gloss.
2 grades of light rust or even variable color not in surface.
3 grades of surperficial big area corrosions.
Stability: mixed composition was placed after 4 hours, observed its layering situation, stabilizes to not stratified not muddyly, and shakiness is decided to be layering or muddiness.
Table 1
| Group | Non-corrosibility | Cleaning rate | Stability |
| Embodiment 3 | 0 grade | 96.2 | Stable |
| Comparative example 1 | 2 grades | 93.9 | Stable |
| Comparative example 2 | 2 grades | 92.7 | Stable |
| Comparative example 3 | 3 grades | 90.3 | Stable |
All above-mentioned these intellecture properties of primary enforcement, do not set restriction this product innovation of other forms of enforcement and/or novel method.Those skilled in the art will utilize this important information, and foregoing is revised, to realize similar implementation status.But all modifications or transformation belong to the right of reservation based on product innovation of the present invention.
The above, be only preferred embodiment of the present invention, is not the present invention to be done to the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (9)
1. a metal decontamination liquid, it is characterized in that, comprise: defoamer 0.3%～5%, cats product 1%～15%, anion surfactant 1%～10%, nonionogenic tenside 3%～15%, cleaning host 20%～40%, inhibiter 2%～5% and She measure deionized water, described inhibiter is by Shuangzi positively charged ion imidazoline quaternary ammonium salt and O ', O '-Diphenyl disulfide is for phosphoric acid-N, and N dimethylamine forms.
2. metal decontamination liquid as claimed in claim 1, is characterized in that: described cleaning host consists of sodium phosphate and water glass, and the weight ratio between sodium phosphate and water glass is 2～4:1.
3. metal decontamination liquid as claimed in claim 1 or 2, is characterized in that: described cats product can be one or more mixing in Varisoft TA 100, Trimethyllaurylammonium chloride, methyl-sulfuric acid alkyl trimethyl ammonium, chlorination cocoyl trimethyl ammonium and cetylpyridinium chloride.
4. the metal decontamination liquid as described in claims 1 to 3, it is characterized in that: described anion surfactant can be alkyl carboxylate's (carboxylate salt) and poly-alkoxyl group carboxylate salt, alcohol b-oxide carboxylate salt, nonylphenol ethoxylate carboxylate salt, and analogue; Sulfonate, for example alkylsulfonate, alkylbenzene sulfonate, alkylaryl sulphonate, sulfonated fatty acid ester, and analogue; Vitriol, for example sulfated alcohols, sulfated alcohols b-oxide, sulfation alkylphenol, alkyl-sulphate, sulfosuccinate, sulfated alkyl ether, and analogue; And phosphoric acid ester, for example alkyl phosphate, and analogue.The anion surfactant exemplifying comprises sodium alkylarysulfonate, alpha-alefinically sulfonate and aliphatic alcohol sulfate.
5. the metal decontamination liquid as described in claim 1 to 4, is characterized in that: described nonionogenic tenside can for for example chloro-, benzyl-, methyl-, ethyl-, propyl group-butyl-and the polyglycol ether of other similar alkyl-blocked fatty alcohol; Do not contain the nonionogenic tenside of polyalkylene oxides, for example alkyl poly glucoside; Anhydro sorbitol and sucrose ester, and b-oxide; Amine oxide, for example alkoxide quadrol; Alcohol alkoxide, alcohol ethoxy propoxide for example, alcohol propoxide, alcohol the third oxygen ethoxy propoxide, alcohol ethoxy fourth oxide compound, and analogue; Nonylphenol ethoxylate, polyoxyethylene glycol ether and analogue; Carboxylicesters, glyceryl ester for example, polyoxyethylene ester, the ethoxyquin of lipid acid and binary alcohol esters, and analogue; Carboxylic acid amide, for example diethanolamine condenses, monoalkanolamine condenses, polyoxyethylene fatty amide, and analogue; And polyalkylene oxide block copolymer, comprising ethylene oxide/propylene oxide segmented copolymer, for example, with trade(brand)name
those that are purchased (BASF-Wyandotte), and analogue; With other similar non-ionic compound.Also can use organic silicon surfactant, for example
6. the metal decontamination liquid as described in claim 1 to 5, is characterized in that: described Shuangzi positively charged ion imidazoline quaternary ammonium salt and O ', and O '-Diphenyl disulfide is for phosphoric acid-N, and the mass ratio of N dimethylamine is 1:2～1:4.
7. the metal decontamination liquid as described in claim 1 to 6, is characterized in that: the preparation method of described Shuangzi positively charged ion imidazoline quaternary ammonium salt is specially,
The first step, get 34.8g oleic acid and 15.3g diethylenetriamine, 0.2g aluminum trioxide catalyst is put in the there-necked flask that thermometer, reflux condensing tube and water trap are housed, add band aqua dimethylbenzene 40ml simultaneously, adopt 140 ℃, 170 ℃, 220 ℃ ladder-elevating temperature methods, dewater, until no longer include water, generate, be down to 140 ℃ of underpressure distillation, slough dimethylbenzene, generate acid amides cyclisation and obtain tetrahydroglyoxaline intermediate;
Second step, by tetrahydroglyoxaline intermediate and Benzyl Chloride in molar ratio 1:1 join in there-necked flask, load onto prolong and thermometer, stir and be warming up to 90 ℃～110 ℃ reaction 4h, add again epoxy chloropropane 4ml, holding temperature is constant, continues reaction 5h, is cooled to room temperature, obtain crude product, with acetone/isopropanol recrystallization 5 times, 50 ℃ of vacuum-drying 48h, obtain the Shuangzi positively charged ion imidazoline quaternary ammonium salt shown in formula 2.
8. the metal decontamination liquid as described in claim 1 to 7, it is characterized in that: described O ', O '-Diphenyl disulfide is for phosphoric acid-N, the preparation method of N dimethylamine is specially 22.2g thiophosphoric anhydride (0.1mol), 37.6g phenol (0.4mol) joins in 250mL there-necked flask, adds 70mL toluene to make solvent; Gradually temperature is elevated to while stirring to about 100 ℃ reaction 45min; Heat up again until reflux, backflow 3h, in reaction process, solid fades away; Solution is slightly cold, adds a small amount of gac boiling decoloring, filtered while hot, and filtrate is cooled to room temperature; Gained filtrate is transferred in beaker, and water-bath is cooling and under agitation dropwise drip 22mL diethylamine (0.2mol), and reaction system is emitted a large amount of heat, liquid color gradually becomes orange, use glass stick rapid stirring, have precipitation to produce, one night of static placement under room temperature; Filtration under diminished pressure, by toluene wash, to white, product is white needle-like crystals; Toluene recrystallization, filtration under diminished pressure, vacuum-drying, obtains white crystal, obtains sterling.
9. the metal decontamination liquid as described in claim 1 to 8, is characterized in that: described defoamer is selected from one or more in octanol, mineral oil, tributyl phosphate.
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| CN109912506A (en) * | 2019-03-22 | 2019-06-21 | 徐州工程学院 | A kind of synthetic method of symmetric form imidazoline Gemini surface active |
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| CN108625167A (en) * | 2018-03-23 | 2018-10-09 | 江苏凯美斯环保科技有限公司 | A kind of anti-fall slurry oil-control agent of water-jet loom efficient and environment-friendly type and its application |
| CN108949380A (en) * | 2018-08-15 | 2018-12-07 | 南通科星化工有限公司 | heavy oil dirt cleaning agent |
| CN109912506A (en) * | 2019-03-22 | 2019-06-21 | 徐州工程学院 | A kind of synthetic method of symmetric form imidazoline Gemini surface active |
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