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Preparation method and application of silicon dioxide for toothpaste for relieving tooth sensitivity

A silica and tooth-sensitivity technology, which is applied in the field of preparation of silica for toothpaste, can solve the problems of slow effect and high cost of anti-sensitivity toothpaste, and achieve the effect of reducing agglomeration, reducing tooth sensitivity, and reducing the degree of polymerization

Active Publication Date: 2020-06-05
GUANGZHOU FEIXUE MATERIAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, there are generally technical problems such as high cost and slow effect of anti-sensitivity toothpaste in the prior art

Method used

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  • Preparation method and application of silicon dioxide for toothpaste for relieving tooth sensitivity
  • Preparation method and application of silicon dioxide for toothpaste for relieving tooth sensitivity

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Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1, a kind of silicon dioxide for toothpaste that relieves tooth sensitivity

[0027] A preparation method of silicon dioxide for toothpaste for alleviating tooth sensitivity, specifically comprising the steps of:

[0028] S1, set the volume to 10m 3 , with a mass concentration of 8.0wt.% sodium sulfate and a volume of 0.1m 3 , the sodium silicate solution with a mass concentration of 2.2mol / L was added to the reaction kettle, stirred evenly at a frequency of 30Hz, heated to 65°C, and then a sulfuric acid solution with a mass concentration of 1mol / L was added at a speed of 1.0m 3 / h, until the pH value is 8.0, mixed solution A is obtained;

[0029] S2. In the stirring state with a frequency of 30 Hz, add simultaneously a sodium silicate solution with a mass concentration of 1.1 mol / L and a sulfuric acid solution and a sodium silicate solution with a mass concentration of 1 mol / L in the mixed solution A prepared in step S1 The joining speed is 14.0m 3 / h, t...

Embodiment 2

[0033] Embodiment 2, a kind of silicon dioxide for toothpaste that relieves tooth sensitivity

[0034] A preparation method of silicon dioxide for toothpaste for alleviating tooth sensitivity, specifically comprising the steps of:

[0035] S1, the volume is 13m 3 , with a mass concentration of 8.0wt.% sodium sulfate and a volume of 0.3m 3 , a sodium silicate solution with a mass concentration of 2.2mol / L was added to the reaction kettle, stirred evenly at a frequency of 30Hz, heated to 70°C, and then a sulfuric acid solution with a mass concentration of 2mol / L was added at a speed of 1.0m 3 / h, until the pH value is 8.2, mixed solution A is obtained;

[0036] S2, under the state of stirring that the frequency is 30Hz, in the mixed solution A that step S1 makes, add the sodium silicate solution that mass concentration is 1.1mol / L and the sulfuric acid solution that mass concentration is 2mol / L simultaneously, sodium silicate solution The joining speed is 14.0m 3 / h, the amou...

Embodiment 3

[0040] Embodiment 3, a kind of silicon dioxide for toothpaste that relieves tooth sensitivity

[0041] A preparation method of silicon dioxide for toothpaste for alleviating tooth sensitivity, specifically comprising the steps of:

[0042] S1, the volume is 12m 3 , with a mass concentration of 8.0wt.% sodium sulfate and a volume of 0.5m 3 , the sodium silicate solution with a mass concentration of 2.2mol / L was added to the reaction kettle, stirred evenly at a frequency of 30Hz, heated to 75°C, and then a sulfuric acid solution with a mass concentration of 4mol / L was added at a speed of 1.0m 3 / h, until the pH value is 8.5, mixed solution A is obtained;

[0043] S2. In the stirring state with a frequency of 30 Hz, add a sodium silicate solution with a mass concentration of 1.1 mol / L and a sulfuric acid solution and a sodium silicate solution with a mass concentration of 4 mol / L in the mixed solution A prepared in step S1. The joining speed is 14.0m 3 / h, the amount added is...

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Abstract

The invention belongs to the technical field of silicon dioxide, and particularly relates to a preparation method and application of silicon dioxide for toothpaste for relieving tooth sensitivity. Sodium sulfate is adopted as an electrolyte, sodium silicate and sulfuric acid react to generate seed crystals, then the seed crystals further react to generate silicon dioxide crystal grains, glycerin is added to enable the surfaces of the silicon dioxide crystal grains to have a large number of hydroxyl groups, cooling tap water is added to reduce the polymerization degree of silicon dioxide, and finally filter pressing, drying, crushing and grinding are conducted. The particle size of silicon dioxide for the toothpaste for relieving tooth sensitivity is close to the diameter of dentinal tubules, silicon dioxide can enter the dentinal tubules and deposit, silicon-oxygen bonds are formed by silicon dioxide and dentinal tubules, the effect of sealing the dentinal tubules is achieved, and theproblem of tooth sensitivity is solved fundamentally; when the anti-allergy toothpaste is applied to toothpaste, the problem of tooth sensitivity can be relieved while the effect of an abrasive is achieved, other components for relieving tooth sensitivity do not need to be added, and therefore the production cost of the anti-allergy toothpaste is reduced.

Description

technical field [0001] The invention belongs to the technical field of silicon dioxide, and in particular relates to a preparation method and application of silicon dioxide for toothpaste for alleviating tooth sensitivity. Background technique [0002] Tooth sensitivity is the phenomenon of numbness and pain caused by the impact of cold, hot, sour and sweet on the teeth. It is mainly due to tooth abrasion, gingival recession, tooth root exposure, etc., which expose the dentin, and the cytoplasmic protrusions of the dentin cells are stimulated to cause sensitivity. Symptoms; Sensitive symptoms can also be caused by changes in the blood circulation of the pulp, such as trauma to the jaw, hyperemia at the apex of the tooth; as the age increases, the frequency of tooth sensitivity increases, which seriously affects people's quality of life. [0003] At present, the basic principles of anti-sensitivity are as follows: 1. Seal the dentine tubules, inhibit the fluid flow in the den...

Claims

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Application Information

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IPC IPC(8): C01B33/18A61K8/25A61Q11/00A61P1/02A61P37/08
CPCA61K8/25A61K2800/28A61P1/02A61P37/08A61Q11/00C01B33/186C01P2004/61
Inventor 任振雪侯灿明林超聪梁少彬胡非
Owner GUANGZHOU FEIXUE MATERIAL TECH
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