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Prussian-blue spherical pigments for cosmetics and preparation method thereof

A technology for Prussian blue and cosmetics, applied in the field of Prussian blue spherical pigment for cosmetics and its preparation, can solve the problems of peeling off of the coating layer, low coating conversion rate, poor pigment effect, etc. The effect of low oil absorption

Inactive Publication Date: 2017-01-04
GUANGXI CHESIR PEARL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that coating directly on spherical substrates will cause low coating conversion rate, poor pigment effect and the coating layer will fall off from spherical substrates like egg shells

Method used

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  • Prussian-blue spherical pigments for cosmetics and preparation method thereof
  • Prussian-blue spherical pigments for cosmetics and preparation method thereof
  • Prussian-blue spherical pigments for cosmetics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The preparation method of this Prussian blue spherical pigment comprises the following steps:

[0047] A. Weigh 50 g of solid spherical SiO with an average particle size of 5 μm 2 , put it into a reaction kettle with a volume of 2L, add 800ml of deionized water, and stir to make it evenly dispersed to form a suspension;

[0048] B. Heat the suspension treated in step A to 75°C, adjust the pH value of the suspension to 5.5 with dilute hydrochloric acid, and then slowly add 0.5mol / L AlCl dropwise under constant temperature stirring 3 Solution 40ml, and 20% sodium hydroxide was added dropwise during this process to keep the pH value constant; when the solution was added, continue to stir at constant temperature for 20-30 min;

[0049] C. Keep the temperature of the suspension treated in step B at 75°C, adjust its pH value to 3.2, and then add FeCl while stirring at constant temperature 3 solution, K 4 Fe(CN) 6 solution, controlling the flow of both solutions to keep...

Embodiment 2

[0054] The preparation method of this Prussian blue spherical pigment comprises the following steps:

[0055] A. Weigh 50 g of solid spherical SiO with an average particle size of 5 μm 2 , put it into a reaction kettle with a volume of 2L, add 800ml of deionized water, and stir to make it evenly dispersed to form a suspension;

[0056] B. Heat the suspension treated in step A to 65°C, adjust the pH value of the suspension to 1.5 with dilute hydrochloric acid, and then slowly add 0.5 wt% SnCl dropwise under constant temperature stirring 4 Solution 30ml, and in this process, dropwise add 20% sodium hydroxide to keep pH value constant; When said SnCl 4 After adding the solution, continue to stir at constant temperature for 20-30 min;

[0057] C. Heat the suspension treated in step B to 75°C, adjust the pH value of the suspension to 5.5 with dilute hydrochloric acid, and then slowly add 0.5mol / L AlCl dropwise under constant temperature stirring 3 Solution 40ml, and 20% sodiu...

Embodiment 3

[0063] The preparation method of this Prussian blue spherical pigment comprises the following steps:

[0064] A. Weigh 150 g of solid spherical SiO with an average particle size of 2 μm 2 , put it into a reaction kettle with a volume of 2L, add 800ml of deionized water, and stir to make it evenly dispersed to form a suspension;

[0065] B. Heat the suspension treated in step A to 65°C, adjust the pH value of the suspension to 1.5 with dilute hydrochloric acid, and then slowly add 0.5 wt% SnCl dropwise under constant temperature stirring 4 Solution 60ml, and in this process, dropwise add 20% sodium hydroxide to keep pH value constant; When said SnCl 4 After adding the solution, continue to stir at constant temperature for 20-30 min;

[0066] C. Heat the suspension treated in step B to 75°C, adjust the pH value of the suspension to 5.5 with dilute hydrochloric acid, and then slowly add 0.5mol / L AlCl dropwise under constant temperature stirring 3 Solution 80ml, and 20% sodi...

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Abstract

The invention relates to Prussian-blue spherical pigments for cosmetics and a preparation method thereof, which relate to the technical field of refined chemical materials. A spherical base material with an average particle size D50 of 1 to 50 micrometers is taken as a pigment base material, and the surface of the base material is at least coated with SnO2, Al2O3 and Fe4[Fe(CN)6]3 metal oxide coatings. The preparation method comprises the following steps: first placing the base material into ionized water to prepare a suspension, adding a SnCl4 solution, a AlCl3 solution, a FeCl3 solution and a K4Fe(CN)6 solution into the suspension, when the color of the suspension reaches a needed hue, continuously stirring at constant temperature, then filtering the suspension, drying, and calcining. Compared with the prior art, the preparation method is simple, the coating of the prepared product is uneasy to drop, and the prepared product has the effects of subdued light effect, good skin feeling, and low oil absorption.

Description

technical field [0001] The invention belongs to the field of fine chemical materials, and in particular relates to a Prussian blue spherical pigment for cosmetics and a preparation method thereof. Background technique [0002] At present, most of the pearlescent pigments sold in the market have a flake structure, and the flake pearlescent pigments can rely on the refraction, reflection, and projection of light in different oxide layers in the pigment flakes to create different hues and gloss. Most of the flaky pearlescent pigments on the market use mica flakes of different particle sizes as the substrate, and the nano-titanium dioxide coated on the surface of the substrate is mostly distributed in an island shape. Application in cosmetics. [0003] Spherical pigments prepared by alternately layering and coating various oxides on the surface of spherical substrates by wet chemical methods are inorganic oxides. After high-temperature calcination, the effect is long-lasting, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C3/06C09C3/12A61K8/25A61K8/26A61K8/19A61K8/02A61Q19/00C09D11/037
CPCC09C1/28A61K8/025A61K8/19A61K8/25A61K8/26A61K2800/10A61K2800/412A61K2800/43A61Q19/00C09C3/006C09C3/063C09C3/12C09C2200/1004C09C2200/205C09D11/037
Inventor 莫峰林正交熊小寒章梦令余慧忠林敏立丁苏扬黄志仁
Owner GUANGXI CHESIR PEARL MATERIAL CO LTD
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