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Phytate nanoparticle coated stain-removal compound abradant and preparation method and application thereof

A nanoparticle and phytate technology, applied in the field of toothpaste for removing stains and abrasives for toothpaste, can solve the problems of complicated toothpaste ingredients and the inability to fully exert the stain removal effect of phytic acid, so as to improve the stain removal effect and increase the overall concentration , the effect of reducing wear

Inactive Publication Date: 2019-02-12
广州华厦生物制药有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only complicates the ingredients of toothpaste, but also may cause reactions or adsorption between additives such as phytic acid or between additives and powder due to the strong complexation reaction and adsorption capacity of phytic acid, so that the stain removal effect of phytic acid cannot be achieved. fully play

Method used

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  • Phytate nanoparticle coated stain-removal compound abradant and preparation method and application thereof
  • Phytate nanoparticle coated stain-removal compound abradant and preparation method and application thereof
  • Phytate nanoparticle coated stain-removal compound abradant and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] 150g abrasive silicon dioxide (SiO 2 ) soaked in 4L of phytic acid (PA) solution with a concentration of 0.08mol / L, and stirred for 5 minutes to make the surface of the abrasive adhere to phytic acid molecules; The concentration is 0.1mol / L ferric chloride (FeCl 3 ) in the solution and stirred for 5 minutes, utilize phytic acid to chelate iron ions, react on the surface of the silicon dioxide abrasive, and deposit insoluble iron phytate particles on the surface of the silicon dioxide abrasive; after filtering, washing and drying, A silicon dioxide composite friction agent for toothpaste whose surface is coated with insoluble ferric phytate nanoparticles is obtained. figure 1 The photo of the surface of the silica composite friction agent coated with insoluble ferric phytate nanoparticles observed by scanning electron microscope (Hitachi‐SU8220), figure 2 It is the surface of uncoated silica composite friction agent. From figure 1 It can be seen that a large number ...

Embodiment 2

[0045] 150g abrasive silicon dioxide (SiO 2 ) soaked in 4L 0.12mol / L phytic acid (PA) solution, stirred for 5 minutes, so that phytic acid molecules were attached to the surface of the friction agent; / L Zinc nitrate (Zn(NO 3 ) 2 ·6H 2 (2) Stir in the solution for 5min, utilize phytic acid to the chelation of zinc ions, react on the surface of the silicon dioxide abrasive, and deposit insoluble zinc phytate particles on the surface of the silicon dioxide abrasive; filter, wash, and dry , to obtain the silicon dioxide composite friction agent for toothpaste whose surface is coated with insoluble zinc phytate nanoparticles. The comparative analysis of the weight of the silica abrasive grains before and after coating shows that the coating amount of the iron-zinc phytate grains on the silica abrasive grains is 6.9% (mass percentage).

Embodiment 3

[0047] 150g abrasive silicon dioxide (SiO 2 ) soaked in 4L 0.22mol / L phytic acid (PA) solution, stirred for 5 minutes, so that phytic acid molecules were attached to the surface of the friction agent; / L cerium nitrate (Ce(NO 3 ) 3 ·6H 2 (2) Stir in the solution for 5min, utilize phytic acid to the chelation of cerium ions, react on the surface of the silica abrasive, and deposit insoluble cerium phytate particles on the surface of the silica abrasive; filter, wash, and dry , to obtain the silicon dioxide composite friction agent for toothpaste whose surface is coated with insoluble cerium phytate nanoparticles. The comparative analysis of the weight of silica abrasive grains before and after coating shows that the coating amount of cerium phytate nanoparticles on silica abrasive grains is 6.8% (mass percentage).

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Abstract

The invention discloses a phytate nanoparticle coated stain-removal compound abradant and a preparation method and application thereof. The preparation method of the compound abradant comprises the steps that toothpaste abrasive particles are soaked in a phytic acid solution and stirred to enable phytic acid molecules to be attached to the surface of the toothpaste abrasive particles, wherein theparticle size of the toothpaste abrasive particles is 5-15 [mu]m; the toothpaste abrasive particles with the adsorbed phytic acid molecules are filtered or centrifuged to remove a liquid phase, and then the toothpaste abrasive particles are placed in a solution containing metal ions to be stirred, so that phytic acid and the metal ions react on the surfaces of the abrasive particles, and insolublephytate nanoparticles are settled on the surface of the toothpaste abradant; and filtering, washing and drying are carried out, and thus the toothpaste compound abradant with the surface coated withthe phytate nanoparticles is obtained. The prepared compound abradant is both a physical abradant and a chemical stain-removal agent. Not only are the local concentration and overall concentration ofphytate in the toothpaste improved, but also the contact probability of the phytate and a tooth surface in brushing is improved; therefore, the stain-removal effect of the compound abradant is improved.

Description

technical field [0001] The invention relates to a friction agent for toothpaste, in particular to a composite friction agent coated with phytate nanoparticles on the surface and a preparation method thereof, and a stain-removing toothpaste containing the composite friction agent; it belongs to the technical field of daily chemical products. Background technique [0002] Long-term smoking, drinking tea, drinking coffee, or pigments in the diet such as soy sauce will deposit a layer of yellowish-brown stains on the surface of the teeth or form exogenous pigments, and substances such as sugar, protein, carbohydrates, or lipids in saliva will also It is easier to adsorb on the tooth surface to form an organic film, which will affect the appearance and health of the teeth. It is difficult to remove it by brushing with ordinary toothpaste, and chemical bleaching or peroxide dissolution will inevitably damage teeth and even the entire mouth. [0003] As a natural plant compound, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/55A61K8/19A61K8/27A61Q11/00A61Q17/00
CPCA61K8/55A61K8/19A61K8/27A61K2800/28A61K2800/56A61Q11/00A61Q17/005
Inventor 黄志渊程江
Owner 广州华厦生物制药有限公司
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