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A kind of coloring stable colored silicon dioxide particle and preparation method thereof

A silicon dioxide and stable coloring technology, which is applied in the direction of chemical instruments and methods, cosmetic preparations, skin care preparations, etc., can solve the problems of easy discoloration, bleeding, fading, etc., and achieve low production costs, stable performance, and conditions controllable effect

Active Publication Date: 2018-07-13
GUANGZHOU FEIXUE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of easy discoloration, fading or bleeding of the existing colored silica particles, the invention provides a preparation method of colored and stable colored silica particles, the method uses water glass and sulfuric acid as reaction raw materials, Using food-grade water-soluble pigments or oily pigments as coloring agents, firstly carry out hydrophobic modification with hydroxyl silicone oil, and then make the prepared silica particles hydrophilic with allyl alcohol polyoxyalkyl ether and isopropanol chloroplatinate Modified to produce colored silica particles with very stable coloring

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, coloring stable colored silica particle of the present invention and its preparation

[0029] The first step: inject 2m sulfuric acid solution with a concentration of 0.4M into the reactor 3 , then add 0.4L of hydroxyl silicone oil, stir and activate for 10min;

[0030] Step 2: Add a water glass solution with a modulus of 3.3 and a concentration of 0.4M to the reaction kettle for reaction. When the pH value of the system is 3, add 2L of Edible Blue No. 1, and stop adding when the pH value of the system is 6 Water glass solution, continue to stir until the material system is transformed into a gel;

[0031] Step 3: Press-filter the formed silica gel, wash the gel filter cake with water to remove salt and residual reaction aids, dry and pulverize the washed gel filter cake to obtain silica particles;

[0032] The fourth step: put 5 kg of silicon dioxide particles into the reaction tank, add 20 kg of allyl alcohol polyoxyalkyl ether aqueous solution with a ...

Embodiment 2

[0033] Example 2, Colored and stable colored silica particles of the present invention and their preparation

[0034] The first step: inject 3m sulfuric acid solution with a concentration of 0.6M into the reactor 3 , then add 1.8L of hydroxy silicone oil, stir and activate for 15min;

[0035]Step 2: Add a water glass solution with a modulus of 3.3 and a concentration of 0.8M to the reactor for reaction. When the pH value of the system is 4, add edible red No. 3 9L, and stop adding water when the pH value of the system is 7. Glass solution, continue to stir until the material system turns into a gel;

[0036] Step 3: Press-filter the formed silica gel, wash the gel filter cake with water to remove salt and residual reaction aids, dry and pulverize the washed gel filter cake to obtain silica particles;

[0037] The fourth step: put 5 kg of silicon dioxide particles into the reaction tank, add 30 kg of allyl alcohol polyoxyalkyl ether aqueous solution with a mass percentage con...

Embodiment 3

[0038] Example 3, Colored and stable colored silica particles of the present invention and their preparation

[0039] The first step: inject 2m sulfuric acid solution with a concentration of 0.8M into the reactor 3 , then add 0.8L of hydroxyl silicone oil, stir and activate for 15min;

[0040] Step 2: Add a water glass solution with a modulus of 3.3 and a concentration of 0.6M to the reactor for reaction. When the pH value of the system is 4, add edible yellow No. 5 4L, and stop adding water when the pH value of the system is 6. Glass solution, continue to stir until the material system turns into a gel;

[0041] Step 3: Press-filter the formed silica gel, wash the gel filter cake with water to remove salt and residual reaction aids, dry and pulverize the washed gel filter cake to obtain silica particles;

[0042] The fourth step: put 5 kg of silicon dioxide particles into the reaction tank, add 25 kg of allyl alcohol polyoxyalkyl ether aqueous solution with a concentration ...

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Abstract

The invention belongs to the technical field of silicon dioxide, and particularly relates to stably-colored silicon dioxide particles and a preparation method thereof. The preparation method comprisesthe following steps: injecting sulfuric acid into a reaction kettle, then adding hydroxyl silicone oil, stirring and activating; adding water glass into the reaction kettle for reaction, adding pigments when the pH of a system is 3-4, stopping addition of the water glass when the pH of the system is 6-7, and continuing stirring until the material system is converted into gel; performing pressurefiltration on the formed silicon dioxide gel, washing, drying and crushing to obtain silicon dioxide particles; adding the silicon dioxide particles into the reaction kettle, adding allyl alcohol polyoxyalkyl ether and chloroplatinic acid-isopropanol, heating for reaction, separating solid particles from a solution after the reaction to obtain colored silicon dioxide particles. The preparation method is simple, and stable in technology; by the preparation method, various types of pigments can be effectively enwrapped, and the prepared colored silicon dioxide particles are very stably colored and are free of phenomena of color change, color fading or color bleeding in practical application.

Description

technical field [0001] The invention belongs to the technical field of silicon dioxide, and in particular relates to a colored silicon dioxide particle with stable coloring and a preparation method thereof. Background technique [0002] Silica is a very important raw material. Through the compounding of silica and pigment, silica particles with porous structure and bright colors can be obtained. And other daily chemical products are more and more widely used, and the demand is also increasing day by day. [0003] At present, the preparation of colored silica particles for toothpaste mainly adopts the sol-gel method. In this method, the reaction raw materials are prepared by reacting under certain conditions to obtain silica sol, and then the sol is emulsified and polymerized with pigments for toothpaste to form di Silica gel, in the process of forming the gel, by controlling the emulsification end point of the reaction process, the required pigment can be uniformly entered ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/193A61K8/25A61K8/02A61Q11/00A61Q19/10C09C1/28C09C3/00C09C3/06C09C3/08C09C3/10C11D3/12
CPCA61K8/0279A61K8/25A61K2800/10A61K2800/43A61Q11/00A61Q19/10C01B33/193C09C1/28C09C3/006C09C3/06C09C3/08C09C3/10C11D3/124
Inventor 胡非林英光李丽峰胡荷燕任振雪
Owner GUANGZHOU FEIXUE MATERIAL TECH
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