Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of silicon dioxide for transparent tooth cleaning toothpaste

A silicon dioxide, transparent technology, applied in the direction of silicon dioxide, silicon oxide, cosmetic preparations, etc., can solve the problems of low light transmittance of silicon dioxide, low light transmittance, not suitable for transparent toothpaste, etc., to achieve process stability , good transparency, good friction cleaning and high transparency effect

Active Publication Date: 2016-07-20
GUANGZHOU FEIXUE MATERIAL TECH
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The RDA value of the precipitated silica is 196, the PCR value is greater than or equal to 100, and the water absorption is 54ml / 20gH 2 O, has excellent wear-resistant cleaning performance and water absorption, but the precipitated silica has low light transmittance and is not suitable for transparent toothpaste
Chinese patent application CN103274422A also discloses a method for preparing core-shell precipitated silica. Similarly, the silica prepared by this method has excellent wear-resistant cleaning performance and water absorption, but its light transmittance is still low , not suitable for clear toothpaste

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, the preparation method of silica for toothpaste transparent toothpaste of the present invention

[0027] The first step: the SiO 2 :Na 2 After the solid sodium silicate with O=3.3~3.45 is liquefied at high temperature, add water to prepare 2.5M sodium silicate solution and 1.6M sodium silicate solution respectively, and set aside;

[0028] Configuration weight percent concentration is the sodium carbonate solution of 25%, then it is added in the sodium silicate solution that concentration is 1.6M, stirs, obtains mixed liquor, the weight content of sodium carbonate in the mixed liquor is 0.2%, for subsequent use;

[0029] The second step: add 4m to the reactor 3 Sodium sulfate solution with a concentration of 11.0% by weight is heated to 80°C, and at the same time, 3m sodium silicate solution with a concentration of 2.5M is added dropwise under stirring. 3 And the concentration is the sulfuric acid solution of 10.0M, keep the pH of the process as 7.5, t...

Embodiment 2

[0033] Embodiment 2, the preparation method of silica for toothpaste of the present invention transparent toothpaste

[0034] The first step: the SiO 2 :Na 2 After the solid sodium silicate with O=3.3~3.45 is liquefied at high temperature, add water to prepare 3.2M sodium silicate solution and 2.2M sodium silicate solution respectively, and set aside;

[0035] Configuration weight percentage concentration is the sodium carbonate solution of 28%, then it is added in the sodium silicate solution that concentration is 2.2M, stirs, obtains mixed liquor, and the weight content of sodium carbonate in the mixed liquor is 1%, for subsequent use;

[0036] The second step: add 8m to the reactor 3Sodium sulfate solution with a concentration of 15.0% by weight is heated to 70°C, and 5m sodium silicate solution with a concentration of 3.2M is added dropwise while stirring. 3 And concentration is the sulfuric acid solution of 12.0M, keep the pH of the process as 9.5, the dropping speed...

Embodiment 3

[0040] Embodiment 3, the preparation method of silica for toothpaste of the present invention transparent toothpaste

[0041] The first step: the SiO 2 :Na 2 After the solid sodium silicate with O=3.3~3.45 is liquefied at high temperature, add water to prepare 2.8M sodium silicate solution and 2.0M sodium silicate solution respectively, and set aside;

[0042] Configuration weight percentage concentration is the sodium carbonate solution of 26%, then it is added in the sodium silicate solution that concentration is 2.0M, stirs, obtains mixed liquor, the weight content of sodium carbonate in the mixed liquor is 0.6%, for subsequent use;

[0043] The second step: add 6m to the reactor 3 Sodium sulfate solution with a concentration of 13.0% by weight is heated to 75°C, and 4m sodium silicate solution with a concentration of 2.8M is added dropwise while stirring. 3 and a sulfuric acid solution with a concentration of 10.0M, keep the pH of the process at 8.5, and the dropping ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Oil absorption valueaaaaaaaaaa
Water absorptionaaaaaaaaaa
Oil absorption valueaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of silicon dioxide for toothpaste, and relates to a preparation method of silicon dioxide for transparent tooth cleaning toothpaste.The preparation method comprises the steps that 1, a sodium carbonate solution is prepared and added into a sodium silicate solution to obtain a mixed solution; 2, a sodium sulfate solution is added into a reaction kettle, the sodium silicate solution and a sulfuric acid solution are simultaneously and dropwise added while stirring under heating is performed, the process pH is kept to be 7.5-9.5, the end point pH is controlled to be 6.0-7.0, and stirring is performed; 3, water is added, the mixed solution and the sulfuric acid solution are simultaneously and dropwise added while stirring under heating is performed, the process pH is kept to be 5.5-7.5, the reaction end point pH is controlled to be 6.0-7.0, and stirring, filter pressing, washing, drying and crushing are performed to obtain the silicon dioxide.According to silicon dioxide, the copper loss value is 12-15 mg, the light transmittance reaches up to 98%, the oil absorption value is 130-160 ml / 100 g, the water absorption capacity is 26-32 ml / 20 g, and silicon dioxide is suitable for the transparent tooth cleaning toothpaste.

Description

technical field [0001] The invention belongs to the technical field of silicon dioxide for toothpaste, and in particular relates to a preparation method of silicon dioxide for toothpaste transparent toothpaste. Background technique [0002] In recent years, transparent toothpaste has become more and more popular among people, especially transparent toothpaste with high frictional cleaning properties, which not only has a crystal clear, bright-colored appearance, but also has the effect of whitening teeth. [0003] At present, silica is a spherical porous structure without sharp edges and corners that will not wear teeth too much, and has stable physical and chemical properties, strong cleaning ability, good compatibility with toothpaste systems, and can be used for the preparation of transparent toothpaste, etc. Features, has been widely used in the toothpaste industry. However, in general, silica with high light transmittance has low friction value and poor cleaning effect...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01B33/18A61K8/25A61Q11/00
CPCA61K8/25A61Q11/00C01B33/18C01P2004/61C01P2006/19C01P2006/60C01P2006/90
Inventor 任振雪李丽峰赵国法林英光庹文喜
Owner GUANGZHOU FEIXUE MATERIAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com