CN113133949A - Production method of sodium trimetaphosphate as abrasive for toothpaste - Google Patents
Production method of sodium trimetaphosphate as abrasive for toothpaste Download PDFInfo
- Publication number
- CN113133949A CN113133949A CN202110494256.2A CN202110494256A CN113133949A CN 113133949 A CN113133949 A CN 113133949A CN 202110494256 A CN202110494256 A CN 202110494256A CN 113133949 A CN113133949 A CN 113133949A
- Authority
- CN
- China
- Prior art keywords
- toothpaste
- sodium
- sodium trimetaphosphate
- abrasive
- dihydrogen phosphate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- UGTZMIPZNRIWHX-UHFFFAOYSA-K sodium trimetaphosphate Chemical compound [Na+].[Na+].[Na+].[O-]P1(=O)OP([O-])(=O)OP([O-])(=O)O1 UGTZMIPZNRIWHX-UHFFFAOYSA-K 0.000 title claims abstract description 41
- 229940034610 toothpaste Drugs 0.000 title claims abstract description 30
- 239000000606 toothpaste Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims abstract description 29
- 235000019799 monosodium phosphate Nutrition 0.000 claims abstract description 29
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 19
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 18
- 238000001354 calcination Methods 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 239000011261 inert gas Substances 0.000 claims abstract description 11
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 7
- 159000000000 sodium salts Chemical class 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000012065 filter cake Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 11
- 238000010298 pulverizing process Methods 0.000 claims description 11
- 239000003082 abrasive agent Substances 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000012295 chemical reaction liquid Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 239000003755 preservative agent Substances 0.000 claims 1
- 230000002335 preservative effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000007873 sieving Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract description 2
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 239000010419 fine particle Substances 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 208000004509 Tooth Discoloration Diseases 0.000 description 1
- 206010044032 Tooth discolouration Diseases 0.000 description 1
- 206010044038 Tooth erosion Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 235000019700 dicalcium phosphate Nutrition 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 208000036595 non-bacterial tooth erosion Diseases 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000036367 tooth discoloration Effects 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/24—Phosphorous; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/38—Condensed phosphates
- C01B25/44—Metaphosphates
- C01B25/445—Metaphosphates of alkali metals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/28—Rubbing or scrubbing compositions; Peeling or abrasive compositions; Containing exfoliants
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Organic Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Veterinary Medicine (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cosmetics (AREA)
Abstract
A method for producing sodium trimetaphosphate used as an abrasive for toothpaste comprises the following steps: adding phosphoric acid into a reaction kettle, stirring, adding sodium salt, detecting the pH value to be 3.0-4.5 on line, heating for reaction, and after the reaction is finished, crystallizing, performing spin filtration, drying and crushing to obtain the anhydrous sodium dihydrogen phosphate particles. And calcining the sodium dihydrogen phosphate particles twice, crushing and sieving to obtain the sodium trimetaphosphate for the toothpaste. The method has simple process, and improves the purity of the sodium dihydrogen phosphate by adopting the steps of online pH monitoring, crystallization, ethanol washing and the like in the process of producing the sodium dihydrogen phosphate. Inert gas is filled in the sodium dihydrogen phosphate calcination process, and the modes of slow temperature reduction and crushing are adopted, so that the purity of the sodium trimetaphosphate is ensured, and solid caking and the like are reduced. The sodium trimetaphosphate obtained by the method has high purity and fine particles, and can ensure the quality of toothpaste abrasive.
Description
Technical Field
The invention relates to a production method of a toothpaste abrasive, in particular to a method for taking sodium trimetaphosphate as an abrasive.
Background
Toothpaste is a cleaning product for people in modern society. The types of the toothpaste have single cleaning type and are developed into multifunctional types with various functions and complete varieties. The toothpaste abradant is used for rubbing teeth to remove stains during tooth brushing, so that the teeth are whitened, and the toothpaste abradant accounts for about 40-50% of the toothpaste. The currently used toothpaste abrasives include silicon dioxide, calcium carbonate, calcium hydrogen phosphate and the like, and the principle is that after the granular abrasives are repeatedly rubbed on the surfaces of teeth, food residues attached to the surfaces of the teeth are removed, so that the teeth are cleaned. However, since these abrasives are mostly insoluble or slightly water-soluble particles, their hardness is high, and long-term rubbing may destroy the smoothness of the tooth surface, cause tooth discoloration and erosion, and cause some damage to teeth.
Sodium trimetaphosphate has higher washing performance due to the hexahydric cyclic molecular structure. Sodium trimetaphosphate is used as a toothpaste abrasive, and calcium, magnesium, titanium and other ions on teeth generate a relatively strong soluble complex compound according to the principle, so that a softer abrasive is formed, and smoke stains, tea stains and the like on the teeth are removed. Sodium trimetaphosphate complexes calcium in rusty stains on teeth to achieve the effect of slowly removing stains. Sodium trimetaphosphate also has the functions of preventing and removing dental caries. Because the texture is soft, the tooth glaze surface can not be damaged, the water-holding and stabilizing performance is good, the dosage of the adhesive and the wetting agent can be reduced, and the cost is reduced.
The invention content is as follows: aiming at the defects of the prior art, the invention provides a method for producing toothpaste abradant by using sodium trimetaphosphate, which comprises the following steps,
the method comprises the following steps: adding phosphoric acid solution into a reaction kettle, stirring, slowly adding sodium salt, detecting the pH range to be 3.0-4.5 on line, heating to 40-60 ℃, and reacting for 2-3 hours. And after the reaction is finished, crystallizing, cooling to 0-10 ℃ while stirring, stirring for 2-3 hours, adding the reaction liquid into a centrifugal machine, throwing and filtering until no liquid flows out, adding ethanol into the centrifugal machine, continuing throwing and filtering, collecting filter cakes after no liquid flows out, putting the filter cakes into an oven, setting the temperature to be 60-70 ℃, and drying for 4-5 hours to obtain the anhydrous sodium dihydrogen phosphate. Pulverizing in pulverizer to obtain anhydrous sodium dihydrogen phosphate granule with purity of 98.5-99.8%.
Step two: adding anhydrous sodium dihydrogen phosphate particles into a crucible, filling inert gas, heating to the temperature of 200-240 ℃, calcining for 3-4 hours, and finishing the reaction. Slowly cooling to room temperature, and pulverizing into granules with a pulverizer. And putting the mixture into the crucible again, filling inert gas, heating the mixture to the temperature of 560 ℃ and 600 ℃, and continuing calcining the mixture for 5 to 7 hours. And cooling to room temperature to obtain sodium trimetaphosphate solid.
Step three: and (3) crushing the solid sodium trimetaphosphate by using a crusher, and screening particles by using a screen to obtain the sodium trimetaphosphate as the abrasive for the toothpaste.
Further, the sodium salt used in the first step is sodium hydroxide, sodium bicarbonate or sodium carbonate.
Further, the centrifuge used in the first step is an antiseptic centrifuge.
Further, the concentration of the ethanol used in the first step is 90-95%.
Further, the step one oven is a blast oven.
Furthermore, the crucible used in the second step is a closed type.
Further, the inert gas used in the second step is nitrogen or helium.
Further, the pulverizer used in the second step is a jet mill.
Furthermore, the aperture of the brush used in the second step is 5-10 μm.
The toothpaste uses sodium trimetaphosphate as an abrasive production method, controls the end point of sodium dihydrogen phosphate reaction by monitoring pH on line, and uses ethanol solution to remove excessive phosphoric acid solution. The crushed sodium dihydrogen phosphate is not easy to agglomerate for subsequent reaction, inert gas is filled into the crushed sodium dihydrogen phosphate to prevent oxidation, the temperature of the crushed sodium dihydrogen phosphate is slowly reduced to room temperature after the sodium dihydrogen phosphate is calcined once to prevent agglomeration, and the crushed sodium dihydrogen phosphate is calcined again to accelerate the reaction and improve the purity of the sodium trimetaphosphate on the other hand.
Detailed Description
The present invention is further described below.
Example 1
Adding phosphoric acid solution into a reaction kettle, stirring, slowly adding sodium hydroxide, detecting the pH range to be 3.0 on line, heating to 40 ℃, and reacting for 3 hours. And (3) after the reaction is finished, crystallizing, cooling to 0 ℃ while stirring, adding the reaction solution into a centrifugal machine after stirring for 2 hours, throwing and filtering until no liquid flows out, adding 90% ethanol into the centrifugal machine, continuing throwing and filtering, collecting a filter cake after no liquid flows out, putting the filter cake into a blast oven, setting the temperature to be 60 ℃, and drying for 5 hours to obtain the anhydrous sodium dihydrogen phosphate. Crushing in a crusher to obtain anhydrous sodium dihydrogen phosphate granule with purity of 98.5%. And adding anhydrous sodium dihydrogen phosphate particles into the crucible, filling nitrogen, heating to 200 ℃, calcining for 4 hours, and finishing the reaction. Slowly cooling to room temperature, and pulverizing into granules with a pulverizer. The crucible is placed again, nitrogen gas is filled in the crucible, the crucible is heated to 560 ℃, and the calcination is continued for 7 hours. And cooling to room temperature to obtain sodium trimetaphosphate solid. Pulverizing the solid sodium trimetaphosphate with a pulverizer, and sieving with a sieve to obtain particles of 5-10 μm to obtain sodium trimetaphosphate as toothpaste abradant.
Example 2
Adding phosphoric acid solution into a reaction kettle, stirring, slowly adding sodium hydroxide, detecting the pH range to be 4.5 on line, heating to 60 ℃, and reacting for 2 hours. And after the reaction is finished, crystallizing, cooling to 10 ℃ while stirring, stirring for 3 hours, adding the reaction liquid into a centrifugal machine, throwing and filtering until no liquid flows out, adding 95% ethanol into the centrifugal machine, continuing throwing and filtering, collecting a filter cake after no liquid flows out, putting the filter cake into a blast oven, setting the temperature to be 70 ℃, and drying for 4 hours to obtain the anhydrous sodium dihydrogen phosphate. Placing the mixture into a crusher to be crushed to obtain anhydrous sodium dihydrogen phosphate particles with the purity of 99.0 percent. Adding anhydrous sodium dihydrogen phosphate particles into a crucible, filling helium, heating to 240 ℃, calcining for 3 hours, and finishing the reaction. Slowly cooling to room temperature, and pulverizing into granules with a pulverizer. And putting the mixture into the crucible again, filling inert gas, heating the mixture to 600 ℃, and continuing calcining the mixture for 5 hours. And cooling to room temperature to obtain sodium trimetaphosphate solid. Pulverizing the solid sodium trimetaphosphate with a pulverizer, and sieving with a sieve to obtain particles of 5-10 μm to obtain sodium trimetaphosphate as toothpaste abradant.
Example 3
Adding phosphoric acid solution into a reaction kettle, stirring, slowly adding sodium carbonate, detecting the pH range to be 4.5 on line, heating to 45 ℃, and reacting for 2.5 hours. And after the reaction is finished, crystallizing, cooling to 5 ℃ while stirring, stirring for 2.5 hours, adding the reaction liquid into a centrifugal machine, throwing and filtering until no liquid flows out, adding 95% ethanol into the centrifugal machine, continuing to throw and filter, collecting filter cakes after no liquid flows out, putting the filter cakes into a blast oven, setting the temperature to be 65 ℃, and drying for 4.5 hours to obtain the anhydrous sodium dihydrogen phosphate. Placing the mixture into a crusher to be crushed to obtain anhydrous sodium dihydrogen phosphate particles with the purity of 99.8 percent. Adding anhydrous sodium dihydrogen phosphate particles into a crucible, introducing nitrogen, heating to 220 ℃, calcining for 3.5 hours, and finishing the reaction. Slowly cooling to room temperature, and pulverizing into granules with a pulverizer. And putting the mixture into the crucible again, filling inert gas, heating the mixture to 580 ℃, and continuing calcining the mixture for 6 hours. And cooling to room temperature to obtain sodium trimetaphosphate solid. Pulverizing the solid sodium trimetaphosphate with a pulverizer, and sieving with a sieve to obtain particles of 5-10 μm to obtain sodium trimetaphosphate as toothpaste abradant.
Example 4
Adding phosphoric acid solution into a reaction kettle, stirring, slowly adding sodium bicarbonate, detecting the pH range to be 4.0 on line, heating to 60 ℃, and reacting for 2 hours. And after the reaction is finished, crystallizing, cooling to 10 ℃ while stirring, stirring for 3 hours, adding the reaction liquid into a centrifugal machine, throwing and filtering until no liquid flows out, adding 95% ethanol into the centrifugal machine, continuing throwing and filtering, collecting a filter cake after no liquid flows out, putting the filter cake into a blast oven, setting the temperature to be 70 ℃, and drying for 4 hours to obtain the anhydrous sodium dihydrogen phosphate. Placing the mixture into a crusher to be crushed to obtain anhydrous sodium dihydrogen phosphate particles with the purity of 99.0 percent. Adding anhydrous sodium dihydrogen phosphate particles into a crucible, introducing nitrogen, heating to 200 ℃, calcining for 4 hours, and finishing the reaction. Slowly cooling to room temperature, and pulverizing into granules with a pulverizer. And putting the mixture into the crucible again, filling inert gas, heating the mixture to 560 ℃, and continuing calcining the mixture for 7 hours. And cooling to room temperature to obtain sodium trimetaphosphate solid. And (3) crushing the sodium trimetaphosphate solid by using a crusher, and screening 5-10 micron particles by using a screen to obtain the sodium trimetaphosphate as the toothpaste abradant.
Claims (9)
1. A production method of sodium trimetaphosphate used as an abrasive agent for toothpaste is characterized by comprising the following steps: adding phosphoric acid solution into a reaction kettle, stirring, slowly adding sodium salt, detecting the pH range to be 3.0-4.5 on line, heating to 40-60 ℃, and reacting for 2-3 hours. And after the reaction is finished, crystallizing, cooling to 0-10 ℃ while stirring, stirring for 2-3 hours, adding the reaction liquid into a centrifugal machine, throwing and filtering until no liquid flows out, adding ethanol into the centrifugal machine to wash excessive phosphoric acid, continuing throwing and filtering, collecting filter cakes after no liquid flows out, putting the filter cakes into an oven, setting the temperature to be 60-70 ℃, and drying for 4-5 hours to obtain the anhydrous sodium dihydrogen phosphate. Pulverizing in pulverizer to obtain anhydrous sodium dihydrogen phosphate granule with purity of 98.5-99.8%. Step two: adding anhydrous sodium dihydrogen phosphate particles into a crucible, filling inert gas, heating to the temperature of 200-240 ℃, calcining for 3-4 hours, and finishing the reaction. Slowly cooling to room temperature, and pulverizing into granules with a pulverizer. And putting the mixture into the crucible again, filling inert gas, heating the mixture to the temperature of 560 ℃ and 600 ℃, and continuing calcining the mixture for 5 to 7 hours. And cooling to room temperature to obtain sodium trimetaphosphate solid. Step three: and (3) crushing the solid sodium trimetaphosphate by using a crusher, and screening particles by using a screen to obtain the sodium trimetaphosphate as the abrasive for the toothpaste.
2. The method for producing sodium trimetaphosphate as abrasive agent for toothpaste according to claim, wherein the sodium salt used in the first step is sodium hydroxide, sodium bicarbonate or sodium carbonate.
3. The method for producing sodium trimetaphosphate for toothpaste as an abrasive according to claim, wherein the centrifuge used in the first step is a preservative centrifuge.
4. The method for producing sodium trimetaphosphate as abrasive agent for toothpaste according to claim, wherein the ethanol concentration used in the first step is 90-95%.
5. The method for producing sodium trimetaphosphate for toothpaste as an abrasive according to claim, wherein the first oven is a forced air oven.
6. The method for producing sodium trimetaphosphate for toothpaste as an abrasive according to claim, wherein the crucible used in the second step is closed.
7. The method for producing sodium trimetaphosphate as abrasive agent for toothpaste according to claim, wherein the inert gas used in the second step is nitrogen or helium.
8. The method for producing sodium trimetaphosphate as abrasive agent for toothpaste according to claim, wherein the pulverizer used in the second step is a jet mill.
9. The method for producing sodium trimetaphosphate as abrasive agent for toothpaste according to claim, wherein the diameter of the brush used in step two is 5-10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110494256.2A CN113133949A (en) | 2021-05-07 | 2021-05-07 | Production method of sodium trimetaphosphate as abrasive for toothpaste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110494256.2A CN113133949A (en) | 2021-05-07 | 2021-05-07 | Production method of sodium trimetaphosphate as abrasive for toothpaste |
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| Publication Number | Publication Date |
|---|---|
| CN113133949A true CN113133949A (en) | 2021-07-20 |
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| CN202110494256.2A Pending CN113133949A (en) | 2021-05-07 | 2021-05-07 | Production method of sodium trimetaphosphate as abrasive for toothpaste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159488A (en) * | 2022-07-22 | 2022-10-11 | 承德莹科精细化工股份有限公司 | Preparation method of high-water-solubility glass-state sodium metaphosphate |
| CN117069083A (en) * | 2023-09-21 | 2023-11-17 | 江苏恒世食品科技有限公司 | Method for producing sodium trimetaphosphate by returning charge polymerization |
-
2021
- 2021-05-07 CN CN202110494256.2A patent/CN113133949A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 张越等: "三偏磷酸钠的制备及其作为磷酸化试剂的应用", 《无机盐工业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159488A (en) * | 2022-07-22 | 2022-10-11 | 承德莹科精细化工股份有限公司 | Preparation method of high-water-solubility glass-state sodium metaphosphate |
| CN115159488B (en) * | 2022-07-22 | 2023-06-30 | 承德莹科精细化工股份有限公司 | Preparation method of high water-solubility glassy sodium metaphosphate |
| CN117069083A (en) * | 2023-09-21 | 2023-11-17 | 江苏恒世食品科技有限公司 | Method for producing sodium trimetaphosphate by returning charge polymerization |
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| JPS6235962B2 (en) |
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Application publication date: 20210720 |