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Surface treatment method of high-hydrophobicity and high-dispersity titanium dioxide pigment for cosmetics

A titanium dioxide, high-dispersibility technology, applied in the direction of dyeing low-molecular organic compound treatment, fibrous fillers, etc., can solve the problems of poor skin feeling, poor hydrophobicity, insufficient compatibility and dispersibility of ester components, etc., to achieve Excellent water repellency, reduced oil absorption, and excellent adhesion

Active Publication Date: 2021-03-26
安徽格锐新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to overcome the poor skin feel, poor hydrophobicity, and insufficient compatibility and dispersibility with the ester components in the cosmetic formulations of the existing titanium dioxide pigments for cosmetics, and to provide a highly hydrophobic and highly dispersible titanium dioxide for cosmetics Pigment surface treatment method, the preparation process of the present invention can effectively improve the coating feeling of titanium dioxide pigment, endow it with excellent hydrophobicity, and good compatibility and dispersibility with oil and ester components in cosmetic formulations, so as to meet the requirements of cosmetics. The use requirements to ensure its use effect

Method used

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  • Surface treatment method of high-hydrophobicity and high-dispersity titanium dioxide pigment for cosmetics
  • Surface treatment method of high-hydrophobicity and high-dispersity titanium dioxide pigment for cosmetics
  • Surface treatment method of high-hydrophobicity and high-dispersity titanium dioxide pigment for cosmetics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The rutile titanium dioxide pigment that meets the aforementioned technical requirements is used as a raw material, and is sent to the airflow mill equipped with an airflow classifier through a metering conveyor belt, and at the feed port of the airflow mill, titanium dioxide is added dropwise through a metering pump with a mass ratio of 0.5 ‰ sodium polyacrylate dispersant solution. The agglomerated particles in the titanium dioxide raw material are removed by adjusting the parameters such as the speed of the airflow mill and the airflow classifier, supplementary air, and rotor clearance. The 325 mesh sieve yield of the obtained titanium dioxide pigment was measured to be 0.004% by wet sieving, and the 200 mesh sieve yield was 0.06% by dry sieve. In this embodiment, the mass concentration of the sodium polyacrylate dispersant solution is 45%.

[0062] The titanium dioxide pigment obtained in step (1) is configured into a paste material with a mass concentration of 40%...

Embodiment 2

[0067]The rutile titanium dioxide pigment that meets the aforementioned technical requirements is used as the raw material, and is delivered to the hammer mill equipped with an air classifier through a metering conveyor belt, and the titanium dioxide feeding amount is added dropwise through a metering pump at the feeding port of the air hammer mill. A mass ratio of 0.5‰ is a composite dispersion of sodium polyacrylate: sodium hexametaphosphate = 1:1. The agglomerated particles in the titanium dioxide raw material are removed by adjusting the parameters such as the speed of the hammer mill and the air classifier, the supplementary air, and the rotor clearance. The obtained titanium dioxide pigment has a wet sieving rate of 0.005% at 325 mesh and a dry sieving rate of 0.04% at 200 mesh. In this embodiment, the mass concentration of the composite dispersion liquid is 15%.

[0068] The titanium dioxide pigment obtained in step (1) is configured into a paste material with a mass c...

Embodiment 3

[0073] The rutile titanium dioxide pigment that meets the aforementioned technical requirements is used as the raw material, and is sent to the turbine pulverizer equipped with an air classifier through a metering conveyor belt. At the feeding port of the turbo pulverizer, titanium dioxide is added dropwise through a metering pump. Sodium polyacrylate with a ratio of 2.0‰: sodium silicate = 1:1 composite dispersion. The agglomerated particles in the titanium dioxide raw material are removed by adjusting the parameters such as the speed of the turbo crusher and the air classifier, the supplementary air, and the rotor clearance. The 325-mesh sieve yield of the obtained titanium dioxide pigment was measured to be 0.006% by wet sieving, and the 200-mesh sieve yield was 0.05% by dry sieve. In this embodiment, the mass concentration of the composite dispersion liquid is 15%.

[0074] The titanium dioxide pigment obtained in step (1) is configured into a paste material with a mass c...

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Abstract

The invention provides a surface treatment method of a high-hydrophobicity and high-dispersity titanium dioxide pigment for cosmetics. The method comprises the following steps: firstly, grinding and grading a rutile titanium dioxide pigment raw material under the action of a grinding aid to remove agglomerated particles in the titanium dioxide pigment raw material; preparing the treated titanium dioxide pigment into paste, transferring the paste into reaction equipment, starting stirring, adjusting the pH value to be weakly alkaline, and heating to 50-100 DEG C for reaction bonding; heating and drying to obtain a titanium dioxide pigment cake; and finally, crushing and removing impurities to obtain the high-hydrophobicity and high-dispersity titanium dioxide pigment product for cosmetics.According to the preparation process disclosed by the invention, the coating feeling of the titanium dioxide pigment can be effectively improved, the titanium dioxide pigment is endowed with excellenthydrophobicity and good compatibility and dispersity with oil ester components in a cosmetic formula, so that the use requirements of cosmetics are met, and the use effect of the cosmetics is guaranteed.

Description

Technical field: [0001] The invention relates to a method for treating the surface of a highly hydrophobic and highly dispersible titanium dioxide pigment used in cosmetics, and belongs to the technical field of cosmetic raw materials. Background technique: [0002] Titanium dioxide (TiO 2 ) commonly known as titanium dioxide, is the most important white pigment, accounting for 80% of all white pigment usage. It has stable physical and chemical properties and excellent photoelectric properties. It has the highest refractive index among known white pigments, and has the best opacity (hiding power), best whiteness and brightness. It is considered to be the best in the world at present. A kind of white pigment, known as the "King of White Pigment", widely used in coatings, plastics, paper, ink, chemical fiber, rubber, cosmetics and other industries. Many developed countries regard titanium dioxide (TiO 2 ) is included in the ranks of key chemicals. In some countries and regi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/08
CPCC09C1/3669C09C3/08
Inventor 朱朋利杨天宇吕化奇柴修安王凯叶晓红马田林
Owner 安徽格锐新材料科技有限公司
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