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Preparation method of silicon dioxide abrasive for high-density and high-dispersion toothpaste

A silicon dioxide, high-dispersion technology, applied in chemical instruments and methods, medical preparations containing active ingredients, cosmetic preparations, etc. The effect of low content, low copper consumption and low oil absorption value

Active Publication Date: 2021-03-09
GUANGZHOU FEIXUE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, technical problems such as worn enamel, high oil absorption value, poor dispersion, and high copper consumption value generally exist in the prior art

Method used

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  • Preparation method of silicon dioxide abrasive for high-density and high-dispersion toothpaste
  • Preparation method of silicon dioxide abrasive for high-density and high-dispersion toothpaste
  • Preparation method of silicon dioxide abrasive for high-density and high-dispersion toothpaste

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Effect test

Embodiment 1

[0028] Embodiment 1, a kind of preparation method of silicon dioxide friction agent for high-density high-dispersion toothpaste

[0029] The preparation method of described high-density high-dispersion toothpaste with silicon dioxide friction agent, comprises the following steps:

[0030] S1. After liquefying solid sodium silicate with a modulus of 3.5 at high temperature, add water to form a sodium silicate solution with a concentration of 3.0mol / L;

[0031] S2, configuration concentration is that the sulfuric acid solution of 10.0mol / L and the sodium sulfate solution that mass percent is 3.0%;

[0032] S3, add 12m in the reactor 3 The sodium sulfate solution that step S2 makes and 2m 3 For sulfuric acid solution, heat up to 50°C, turn on the stirring device, the stirring frequency is 70Hz, and 3 Add the sodium silicate solution prepared in step S1 dropwise at a speed of 1 / h, and control the reaction end point pH value to be 6.5;

[0033] S4. Raise the temperature to 75°C...

Embodiment 2

[0036] Embodiment 2, a kind of preparation method of silicon dioxide friction agent for high-density high-dispersion toothpaste

[0037] The preparation method of described high-density high-dispersion toothpaste with silicon dioxide friction agent, comprises the following steps:

[0038] S1. After liquefying solid sodium silicate with a modulus of 1.5 at high temperature, add water to form a sodium silicate solution with a concentration of 1.5mol / L;

[0039] S2, configuration concentration is that the sulfuric acid solution of 6.0mol / L and the sodium sulfate solution that mass percentage is 0.5%;

[0040] S3, add 8m in the reactor 3 The sodium sulfate solution that step S2 makes and 0.5m 3 For sulfuric acid solution, heat up to 25°C, turn on the stirring device, the stirring frequency is 50Hz, and 3 Add the sodium silicate solution prepared in step S1 dropwise at a speed of 1 / h, and control the reaction end point pH value to be 3.5;

[0041] S4. Raise the temperature to 5...

Embodiment 3

[0044] Embodiment 3, a kind of preparation method of silicon dioxide friction agent for high-density high-dispersion toothpaste

[0045] The preparation method of described high-density high-dispersion toothpaste with silicon dioxide friction agent, comprises the following steps:

[0046] S1. After liquefying solid sodium silicate with a modulus of 2.0 at high temperature, add water to prepare a sodium silicate solution with a concentration of 2.2mol / L;

[0047] S2, configuration concentration is that the sulfuric acid solution of 7.5mol / L and the sodium sulfate solution that mass percent is 1.5%;

[0048] S3, add 9m in the reactor 3 The sodium sulfate solution that step S2 makes and 1.0m 3 For sulfuric acid solution, heat up to 35°C, turn on the stirring device, the stirring frequency is 60Hz, and 3 Add the sodium silicate solution prepared in step S1 dropwise at a speed of 1 / h, and control the reaction end point pH value to be 4.5;

[0049] S4. Raise the temperature to 5...

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Abstract

The invention belongs to the technical field of silicon dioxide, and particularly relates to a preparation method of a silicon dioxide abrasive for high-density and high-dispersion toothpaste. According to the preparation method, with a sodium sulfate solution with the mass percent of 0.5-3.0% adopted as a reaction base solution, the silicon dioxide abrasive for the high-density and high-dispersion toothpaste is prepared by adopting a four-step method at 25-50 DEG C and 50-75 DEG C in sequence. The silicon dioxide abrasive for the high-density and high-dispersion toothpaste provided by the invention is large in density, small in pore diameter, high in dispersion, large in apparent density, low in oil absorption value and low in copper consumption, and can achieve good friction performancewithout damaging enamel and influencing the performance of a toothpaste body when being applied to a toothpaste formula. Besides, the preparation method of the silicon dioxide abrasive for the high-density and high-dispersion toothpaste is simple, easy to operate and controllable in condition; paste collapse cannot be caused when the silicon dioxide abrasive is applied to the preparation process of the toothpaste; liquid-phase components absorbed by the silicon dioxide abrasive are low, so that the production cost of the toothpaste is saved, and industrial production is easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of silicon dioxide, and in particular relates to a preparation method of a silicon dioxide friction agent for high-density and high-dispersion toothpaste. Background technique [0002] Toothpaste paste is mainly composed of liquid phase and solid phase. The main components of the liquid phase are sorbitol, glycerin, propylene glycol, PEG, water, etc. The solid phase components are mainly silicon dioxide, calcium carbonate, calcium hydrogen phosphate and so on. At present, because calcium carbonate wears down tooth enamel and calcium hydrogen phosphate is unstable, toothpaste on the market mainly uses silica as an abrasive, which is the main component of the solid phase. [0003] The oil absorption value of silica friction agent is generally in the range of 60-180g / 100g, and the apparent density is 0.2-0.6g / ml. If the oil absorption value is less than 60g / 100g and the copper consumption of silica powder is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/193A61K8/25A61Q11/00
CPCA61K8/25A61K2800/28A61Q11/00C01B33/193C01P2006/16C01P2006/19
Inventor 梁少彬马逸敏王宪伟林英光胡非
Owner GUANGZHOU FEIXUE MATERIAL TECH
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