CN108529767A - A kind of preparation method of water quality stabilizer - Google Patents
A kind of preparation method of water quality stabilizer Download PDFInfo
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- CN108529767A CN108529767A CN201810353853.1A CN201810353853A CN108529767A CN 108529767 A CN108529767 A CN 108529767A CN 201810353853 A CN201810353853 A CN 201810353853A CN 108529767 A CN108529767 A CN 108529767A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of preparation methods of water quality stabilizer, belong to chemical field.The present invention is using poly-aspartate as raw material, it is easily decomposed using it, and there is corrosion mitigating effect, open loop is carried out to it with the primary amine key in 5 amino orotic acid of amino sulphur, maleic anhydride is added, urea synthesizing graft, the hetero atom of institute's band in 5 amino whey acid molecular structures has been particularly well adsorbed in the surface of carbon steel, form layer protecting film, prevent the reaction of interface ion, it can destroy the activity of enzyme and protein in microbial body simultaneously, interrupt their respiration, hinder the synthesis of biological heredity body nucleic acid, inhibit the growth and breeding of microorganism, destroy the cell wall of microorganism, make its internal and external environment disequilibrium, reach inhibition algal grown, the phenomenon that eutrophication, occurs.The present invention solves current phosphorous water quality stabilizer and causes circulating cooling water eutrophication, the problem for causing recirculating water blowdown water phosphorus content exceeded after use.
Description
Technical field
The invention belongs to chemical fields, and in particular to a kind of preparation method of water quality stabilizer.
Background technology
In recirculating cooling water system, fouling and the project that corrosion is generally existing severely impact the economy of product
Benefit.In recent years, Stability Technique of Water Quality at home and abroad has development at full speed, highlightedly solves the fouling in recirculated cooling water
With the problem of corrosion.Water quality stabilizer is exactly to prevent cooling water that the corrosion and fouling of equipment is added in recirculated cooling water
Medicament.Stable complex compound can be formed at dirt matter with calcium and magnesium ion in water etc., it is soluble easily in water, rise good chelating, dispersion,
Corrosion inhibition prevents fouling and plays fluffing action to old dirty layer, is convenient for snaking.There are preferable inhibition, resistance to carbon steel, stainless steel
Dirt effect, can be improved equipment heat transfer effect, extends service life of equipment, plays the role of water-saving and energy saving and saving steel.
It is widely used in the processing of industrial circulating cooling water and boiler water.
Water quality stabilizer is phosphorus system at present, is divided into high phosphorus system, low-phosphorous system and without phosphorus system, and research of non-phosphorus scale inhibitor is phosphorus content
Less than 2%, thus in the research of non-phosphorus scale inhibitor of part appoint so there are organophosphors.Circulating cooling water eutrophication is caused in actual use,
It is exceeded to easily cause recirculating water blowdown water phosphorus content.Therefore, producing a kind of water quality stabilizer that can be solved the above problems has
The prodigious market demand.
Invention content
The technical problems to be solved by the invention：Recirculated cooling water eutrophy is caused for current phosphorous water quality stabilizer
Change, the problem for causing recirculating water blowdown water phosphorus content exceeded after use provides a kind of preparation method of water quality stabilizer.
In order to solve the above technical problems, the present invention is using technical solution as described below：
A kind of preparation method of water quality stabilizer, which is characterized in that this method comprises the following steps：
（1）Take pimelic acid in mass ratio 2 ~ 4：5 ~ 7 are added thionyl chloride, are warming up to 60 ~ 70 DEG C and are stirred, and are evaporated under reduced pressure, obtain
It is evaporated under reduced pressure object, takes vacuum distillation object in mass ratio 1：1 is added bromine, is stirred, is warming up to 70 ~ 80 DEG C of heat preservations, stands, obtains quiet
Liquid is set, according to the mass fraction, takes 20 ~ 30 parts to stand liquid, 18 ~ 24 parts of diethyl phosphites, 8 ~ 14 parts of pyridine mixing, is warming up to
115 ~ 122 DEG C are stirred, and obtain stirring mixture, and vacuum distillation is cooled to room temperature, obtains cooling thing；
（2）Take cooling thing in mass ratio 10：3 are added hydrochloric acid, are stirred in 75 ~ 80 DEG C, are evaporated under reduced pressure, and are protected then at 40 ~ 50 DEG C
Temperature, rotary evaporation, concentration obtain concentrate, take concentrate in mass ratio 1：8 are added acetone, are stirred, obtain mixed liquor, take mixed
Close liquid in mass ratio 1：5 are added absolute ethyl alcohol, filter, filter residue is taken to be washed through absolute ethyl alcohol, are dried in vacuo, obtain dried object, spare；
（3）Take maleic anhydride in mass ratio 1：1 is added distilled water mixing, adds the urea of maleic anhydride quality 40 ~ 50%, rises
Temperature is stirred to 160 ~ 200 DEG C, is obtained mixture, is taken mixture in mass ratio 10：1：1 is added sulfuric acid, phosphoric acid mixing, in 150 ~
160 DEG C of dehydrations, are cooled to room temperature, and filter, and take filter residue through distilling water washing, obtain washings；
（4）Take poly-aspartate in mass ratio 1：It is mixed in 5 addition distilled water, is stirred, obtains suspension, take dispersion liquid by matter
Measure ratio 10：3：1 is added 5- amino orotic acid, sodium hydroxide, is stirred in 30 ~ 40 DEG C, then be warming up to 50 ~ 60 DEG C of heat preservations, adjusts
PH to 7 ~ 7.4 is saved, mixture A is obtained, takes mixture A in mass ratio 1：2：5 are added step（2）Spare dried object, absolute ethyl alcohol,
Centrifugation, takes subnatant, dry, pulverize and sieve with 100 mesh sieve, and collects sieving particle to get water quality stabilizer.
Compared with other methods, advantageous effects are the present invention：
（1）The present invention is that raw material first carries out halogenation with pimelic acid, thionyl chloride etc., and diethyl phosphite, pyridine warp is added
Phosphorylated obtains intermediate product, is eventually adding hydrochloric acid water solution and obtains a kind of change combining organic phosphoric acid and phosphorus carboxylic acid common property
Object is closed, wherein containing only phosphate and carboxyl, phosphoric acid based structures is introduced, greatly reduces phosphorus content, enhance water solubility, with water
The complexing power of incrustation ion and metal surface chelating adsorption capacity enhancing, can be adsorbed onto after addition scale crystal activity increase
It is lost activity by bioactive molecule therein encirclement with ion chelating, crystal on point, scale crystal lattice misplaces, in dirty layer
Some cavities are formed, molecule is reduced with intermolecular interaction, so that hard scale is softened ,-COOH is adsorbed onto on scale crystal, makes its nothing
Method grows and becomes round and smooth, and crystal grain becomes tiny, and it is soft to form dirty layer, is easily flush with water, while its its energy in aqueous solution
Four hydrogen ions are dissociated, after dissociating hydrogen ion in water, itself become negatively charged anion, these anion energy
Stable complex compound is formed with metal ions such as calcium ions and magnesium ions, to improve degree of supersaturation when crystal grain is precipitated, makes into dirtization
The solubility for closing object increases, and plays scale effect；
（2）The present invention is easily decomposed using poly-aspartate as raw material, using it, and has corrosion mitigating effect, with amino sulphur 5- amino
Primary amine key in orotic acid carries out it open loop, and maleic anhydride, urea synthesizing graft is added,
The hetero atom of institute's band in 5- amino whey acid molecular structures has been particularly well adsorbed in the surface of carbon steel, forms one layer of guarantor
Cuticula prevents the reaction of interface ion, while it can destroy the activity of enzyme and protein in microbial body, interrupt theirs
Respiration hinders the synthesis of biological heredity body nucleic acid, inhibits the growth and breeding of microorganism, destroy the cell wall of microorganism,
Make its internal and external environment disequilibrium, reaches and inhibit the phenomenon that algal grown, eutrophication occur.
Specific implementation mode
A kind of preparation method of water quality stabilizer, includes the following steps：
（1）Take pimelic acid in mass ratio 2 ~ 4：5 ~ 7 are added thionyl chloride, are warming up to 60 ~ 70 DEG C and are stirred 1 ~ 2h, decompression is steamed
It evaporates, obtains vacuum distillation object, take vacuum distillation object in mass ratio 1：1 is added bromine, is stirred 3 ~ 4h, is warming up to 70 ~ 80 DEG C of heat preservations 2
~ 3h stands 10 ~ 12h, obtains standing liquid, according to the mass fraction, takes 20 ~ 30 parts to stand liquid, 18 ~ 24 parts of diethyl phosphites, 8 ~ 14
Part pyridine mixing, is warming up to 115 ~ 122 DEG C and is stirred 3 ~ 4h, obtain stirring mixture, be evaporated under reduced pressure, be cooled to room temperature, obtain cold
But object；
（2）Take cooling thing in mass ratio 10：3 are added the hydrochloric acid that mass fraction is 37%, and 4 ~ 5h is stirred in 75 ~ 80 DEG C, depressurize
Distillation, then at 40 ~ 50 DEG C of 3 ~ 4h of heat preservation, rotary evaporation, concentration obtains concentrate, takes concentrate in mass ratio 1：8 are added acetone,
It is stirred 30 ~ 40min, obtains mixed liquor, takes mixed liquor in mass ratio 1：5 are added absolute ethyl alcohol, filter, take filter residue through anhydrous second
Alcohol washs, and vacuum drying obtains dried object, spare；
（3）Take maleic anhydride in mass ratio 1：1 is added distilled water mixing, adds the urea of maleic anhydride quality 40 ~ 50%, rises
Temperature is stirred 2 ~ 3h to 160 ~ 200 DEG C, obtains mixture, takes mixture in mass ratio 10：1：1 is added sulfuric acid, phosphoric acid mixing, in
150 ~ 160 DEG C of 2 ~ 4h of dehydration, are cooled to room temperature, filter, take filter residue through distilling water washing, obtain washings；
（4）Take poly-aspartate in mass ratio 1：It is mixed in 5 addition distilled water, is stirred 30 ~ 40min, obtains dispersion liquid, take outstanding
Supernatant liquid in mass ratio 10：3：1 is added 5- amino orotic acid, sodium hydroxide, and 1 ~ 2h is stirred in 30 ~ 40 DEG C, then it is warming up to 50 ~
60 DEG C of 10 ~ 15h of heat preservation, adjust pH to 7 ~ 7.4, obtain mixture A, take mixture A in mass ratio 1：2：5 are added step（2）It is spare
Dried object, absolute ethyl alcohol, centrifugation, take subnatant, dry, pulverize and sieve with 100 mesh sieve, collect sieving particle to get water stabilization
Agent.
Embodiment 1
A kind of preparation method of water quality stabilizer, includes the following steps：
（1）Take pimelic acid in mass ratio 2：5 are added thionyl chloride, are warming up to 60 DEG C and are stirred 1h, are evaporated under reduced pressure, must depressurize steaming
Object is evaporated, vacuum distillation object in mass ratio 1 is taken：1 is added bromine, is stirred 3h, is warming up to 70 DEG C of heat preservation 2h, stands 10h, must stand
Liquid takes 20 parts to stand liquid, 18 parts of diethyl phosphites, 8 parts of pyridine mixing, is warming up to 115 DEG C and is stirred according to the mass fraction
3h obtains stirring mixture, and vacuum distillation is cooled to room temperature, obtains cooling thing；
（2）Take cooling thing in mass ratio 10：3 are added the hydrochloric acid that mass fraction is 37%, and 4h is stirred in 75 DEG C, are evaporated under reduced pressure,
Then at 40 DEG C of heat preservation 3h, rotary evaporation, concentration obtains concentrate, takes concentrate in mass ratio 1：8 are added acetone, are stirred
30min obtains mixed liquor, takes mixed liquor in mass ratio 1：5 are added absolute ethyl alcohol, filter, take filter residue to be washed through absolute ethyl alcohol, vacuum
It is dry, dried object is obtained, it is spare；
（3）Take maleic anhydride in mass ratio 1：1 is added distilled water mixing, adds the urea of maleic anhydride quality 40%, is warming up to
160 DEG C are stirred 2h, obtain mixture, take mixture in mass ratio 10：1：1 is added sulfuric acid, phosphoric acid mixing, in 150 DEG C of dehydrations
2h is cooled to room temperature, and is filtered, and is taken filter residue through distilling water washing, is obtained washings；
（4）Take poly-aspartate in mass ratio 1：It is mixed in 5 addition distilled water, is stirred 30min, obtains dispersion liquid, take suspension
Liquid in mass ratio 10：3：1 is added 5- amino orotic acid, sodium hydroxide, is stirred 1h in 30 DEG C, then be warming up to 50 DEG C of heat preservations
10h adjusts pH to 7, obtains mixture A, take mixture A in mass ratio 1：2：5 are added step（2）Spare dried object, anhydrous second
Alcohol, centrifugation, takes subnatant, dry, pulverize and sieve with 100 mesh sieve, and collects sieving particle to get water quality stabilizer.
Embodiment 2
A kind of preparation method of water quality stabilizer, includes the following steps：
（1）Take pimelic acid in mass ratio 4：7 are added thionyl chloride, are warming up to 70 DEG C and are stirred 2h, are evaporated under reduced pressure, must depressurize steaming
Object is evaporated, vacuum distillation object in mass ratio 1 is taken：1 is added bromine, is stirred 4h, is warming up to 80 DEG C of heat preservation 3h, stands 12h, must stand
Liquid takes 30 parts to stand liquid, 24 parts of diethyl phosphites, 14 parts of pyridine mixing, it is mixed to be warming up to 122 DEG C of stirrings according to the mass fraction
4h is closed, stirring mixture is obtained, is evaporated under reduced pressure, is cooled to room temperature, obtains cooling thing；
（2）Take cooling thing in mass ratio 10：3 are added the hydrochloric acid that mass fraction is 37%, and 5h is stirred in 80 DEG C, are evaporated under reduced pressure,
Then at 50 DEG C of heat preservation 4h, rotary evaporation, concentration obtains concentrate, takes concentrate in mass ratio 1：8 are added acetone, are stirred
40min obtains mixed liquor, takes mixed liquor in mass ratio 1：5 are added absolute ethyl alcohol, filter, take filter residue to be washed through absolute ethyl alcohol, vacuum
It is dry, dried object is obtained, it is spare；
（3）Take maleic anhydride in mass ratio 1：1 is added distilled water mixing, adds the urea of maleic anhydride quality 50%, is warming up to
200 DEG C are stirred 3h, obtain mixture, take mixture in mass ratio 10：1：1 is added sulfuric acid, phosphoric acid mixing, in 160 DEG C of dehydrations
4h is cooled to room temperature, and is filtered, and is taken filter residue through distilling water washing, is obtained washings；
（4）Take poly-aspartate in mass ratio 1：It is mixed in 5 addition distilled water, is stirred 40min, obtains dispersion liquid, take suspension
Liquid in mass ratio 10：3：1 is added 5- amino orotic acid, sodium hydroxide, is stirred 2h in 40 DEG C, then be warming up to 60 DEG C of heat preservations
15h adjusts pH to 7.4, obtains mixture A, take mixture A in mass ratio 1：2：5 are added step（2）It is spare dried object, anhydrous
Ethyl alcohol, centrifugation, takes subnatant, dry, pulverize and sieve with 100 mesh sieve, and collects sieving particle to get water quality stabilizer.
Embodiment 3
A kind of preparation method of water quality stabilizer, includes the following steps：
（1）Take pimelic acid in mass ratio 3：6 are added thionyl chloride, are warming up to 65 DEG C and are stirred 1h, are evaporated under reduced pressure, must depressurize steaming
Object is evaporated, vacuum distillation object in mass ratio 1 is taken：1 is added bromine, is stirred 3h, is warming up to 75 DEG C of heat preservation 2h, stands 11h, must stand
Liquid takes 25 parts to stand liquid, 21 parts of diethyl phosphites, 11 parts of pyridine mixing, it is mixed to be warming up to 118 DEG C of stirrings according to the mass fraction
3h is closed, stirring mixture is obtained, is evaporated under reduced pressure, is cooled to room temperature, obtains cooling thing；
（2）Take cooling thing in mass ratio 10：3 are added the hydrochloric acid that mass fraction is 37%, and 4h is stirred in 77 DEG C, are evaporated under reduced pressure,
Then at 45 DEG C of heat preservation 3h, rotary evaporation, concentration obtains concentrate, takes concentrate in mass ratio 1：8 are added acetone, are stirred
35min obtains mixed liquor, takes mixed liquor in mass ratio 1：5 are added absolute ethyl alcohol, filter, take filter residue to be washed through absolute ethyl alcohol, vacuum
It is dry, dried object is obtained, it is spare；
（3）Take maleic anhydride in mass ratio 1：1 is added distilled water mixing, adds the urea of maleic anhydride quality 45%, is warming up to
180 DEG C are stirred 2h, obtain mixture, take mixture in mass ratio 10：1：1 is added sulfuric acid, phosphoric acid mixing, in 155 DEG C of dehydrations
3h is cooled to room temperature, and is filtered, and is taken filter residue through distilling water washing, is obtained washings；
（4）Take poly-aspartate in mass ratio 1：It is mixed in 5 addition distilled water, is stirred 35min, obtains dispersion liquid, take suspension
Liquid in mass ratio 10：3：1 is added 5- amino orotic acid, sodium hydroxide, is stirred 1h in 35 DEG C, then be warming up to 55 DEG C of heat preservations
13h adjusts pH to 7.3, obtains mixture A, take mixture A in mass ratio 1：2：5 are added step（2）It is spare dried object, anhydrous
Ethyl alcohol, centrifugation, takes subnatant, dry, pulverize and sieve with 100 mesh sieve, and collects sieving particle to get water quality stabilizer.
Comparative example：The water quality stabilizer of Yichun City company production.
The water quality stabilizer to the present invention and the water quality stabilizer of comparative example carry out following performance test respectively：Hinder calcium carbonate
Dirt experiment：With reference to China Petroleum Chemicals Corporation《Cooling water analysis and test method》In " 401 tosca method " to water stabilization
Agent is tested.Corrosion test：With reference to China Petroleum Chemicals Corporation《Cooling water analysis and test method》In " 404 rotary hanging plates lose
Weight method " tests water quality stabilizer.Specific test, which is taken over, is shown in Table 1：
Table 1：
In summary, water quality stabilizer effect of the invention is more preferable, and more preferably, be worth promoting performance use.
Claims (1)
1. a kind of preparation method of water quality stabilizer, which is characterized in that this method comprises the following steps：
（1）Take pimelic acid in mass ratio 2 ~ 4：5 ~ 7 are added thionyl chloride, are warming up to 60 ~ 70 DEG C and are stirred, and are evaporated under reduced pressure, obtain
It is evaporated under reduced pressure object, takes vacuum distillation object in mass ratio 1：1 is added bromine, is stirred, is warming up to 70 ~ 80 DEG C of heat preservations, stands, obtains quiet
Liquid is set, according to the mass fraction, takes 20 ~ 30 parts to stand liquid, 18 ~ 24 parts of diethyl phosphites, 8 ~ 14 parts of pyridine mixing, is warming up to
115 ~ 122 DEG C are stirred, and obtain stirring mixture, and vacuum distillation is cooled to room temperature, obtains cooling thing；
（2）Take cooling thing in mass ratio 10：3 are added hydrochloric acid, are stirred in 75 ~ 80 DEG C, are evaporated under reduced pressure, and are protected then at 40 ~ 50 DEG C
Temperature, rotary evaporation, concentration obtain concentrate, take concentrate in mass ratio 1：8 are added acetone, are stirred, obtain mixed liquor, take mixed
Close liquid in mass ratio 1：5 are added absolute ethyl alcohol, filter, filter residue is taken to be washed through absolute ethyl alcohol, are dried in vacuo, obtain dried object, spare；
（3）Take maleic anhydride in mass ratio 1：1 is added distilled water mixing, adds the urea of maleic anhydride quality 40 ~ 50%, rises
Temperature is stirred to 160 ~ 200 DEG C, is obtained mixture, is taken mixture in mass ratio 10：1：1 is added sulfuric acid, phosphoric acid mixing, in 150 ~
160 DEG C of dehydrations, are cooled to room temperature, and filter, and take filter residue through distilling water washing, obtain washings；
（4）Take poly-aspartate in mass ratio 1：It is mixed in 5 addition distilled water, is stirred, obtains suspension, take dispersion liquid by matter
Measure ratio 10：3：1 is added 5- amino orotic acid, sodium hydroxide, is stirred in 30 ~ 40 DEG C, then be warming up to 50 ~ 60 DEG C of heat preservations, adjusts
PH to 7 ~ 7.4 is saved, mixture A is obtained, takes mixture A in mass ratio 1：2：5 are added step（2）Spare dried object, absolute ethyl alcohol,
Centrifugation, takes subnatant, dry, pulverize and sieve with 100 mesh sieve, and collects sieving particle to get water quality stabilizer.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0672625A1 (en) * | 1994-03-14 | 1995-09-20 | Bayer Ag | Compound for water treatment with polyaspartic acid or a derivative thereof and phosphonic acid |
| JP2001048711A (en) * | 1999-08-11 | 2001-02-20 | Dainippon Ink & Chem Inc | Water treatment agent for cooling |
| CN101492207A (en) * | 2009-03-10 | 2009-07-29 | 河北省能源研究所 | Dirt dispersion agent and method of producing the same |
| CN103265126A (en) * | 2013-06-06 | 2013-08-28 | 河北省科学院能源研究所 | Non-phosphorus environment-friendly softening water corrosion inhibitor |
| CN107602858A (en) * | 2017-09-13 | 2018-01-19 | 苏州美瑞姿生物科技有限公司 | Poly-aspartate derivant and its synthetic method |
| CN107720984A (en) * | 2017-10-17 | 2018-02-23 | 高产明 | A kind of preparation method of the low-phosphorous water quality stabilizer of efficient scale corrosion inhibition type |
-
2018
- 2018-04-19 CN CN201810353853.1A patent/CN108529767A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0672625A1 (en) * | 1994-03-14 | 1995-09-20 | Bayer Ag | Compound for water treatment with polyaspartic acid or a derivative thereof and phosphonic acid |
| JP2001048711A (en) * | 1999-08-11 | 2001-02-20 | Dainippon Ink & Chem Inc | Water treatment agent for cooling |
| CN101492207A (en) * | 2009-03-10 | 2009-07-29 | 河北省能源研究所 | Dirt dispersion agent and method of producing the same |
| CN103265126A (en) * | 2013-06-06 | 2013-08-28 | 河北省科学院能源研究所 | Non-phosphorus environment-friendly softening water corrosion inhibitor |
| CN107602858A (en) * | 2017-09-13 | 2018-01-19 | 苏州美瑞姿生物科技有限公司 | Poly-aspartate derivant and its synthetic method |
| CN107720984A (en) * | 2017-10-17 | 2018-02-23 | 高产明 | A kind of preparation method of the low-phosphorous water quality stabilizer of efficient scale corrosion inhibition type |
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Application publication date: 20180914 |
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