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Flake pigment and preparation method thereof and cosmetic using the same

A flake and pigment technology, which is applied in the field of flake pigment and its preparation, can solve the problems of high gloss, inability to obtain interference color, inability to obtain matte feeling, etc., and achieve excellent performance, excellent hiding power or matte, The effect of excellent interference color effect

Active Publication Date: 2009-08-19
CQV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned Japanese Patent Publication cannot obtain a matte feeling due to excessively high gloss resulting from a particle size of 20 μm or more and a high aspect ratio, nor can it be achieved by using only 1 to 90% by weight of flaky alumina. interference color

Method used

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  • Flake pigment and preparation method thereof and cosmetic using the same
  • Flake pigment and preparation method thereof and cosmetic using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Suspend 100 g of synthetic α-alumina particles with a particle size of 2-20 μm, an aspect ratio of 10-50 and a diffraction ratio of 1.76-1.77 in 2 L of deionized water, and raise the temperature to about 80° C. 5% chloric acid was added to lower the pH to about 2.0, followed by reflux over 30 minutes. Add 40% TiOCl together 2 and 15% diluted sodium hydroxide solution to adjust the pH to 2.0. With TiOCl 2 With the increase of the added amount, the solution gradually appeared silvery white (120mL), golden (180mL), red (215mL), blue (270mL) and green (320mL). Stop adding TiOCl when the desired color is obtained 2 , and reflux for more than 10 minutes. The acidic solution was filtered, washed three times with deionized water, dried at 110° C. and calcined at 850° C. for 30 minutes to obtain flake pigments.

[0041] According to the X-ray diffraction method, the analysis of the calcined pigment showed the formation of a titanium dioxide layer of anatase structure on the...

Embodiment 2

[0043] Suspend 100 g of synthetic α-alumina particles with a particle size of 2-20 μm, an aspect ratio of 10-50 and a diffraction ratio of 1.76-1.77 in 2 L of deionized water, and raise the temperature to about 80° C. 5% chloric acid was added to lower the pH to about 1.5, followed by reflux over 30 minutes. Add together 30mL 5% SnCl 4 ·5H 2 O solution and 15% diluted NaOH solution were refluxed for 30 minutes while adjusting the pH to 2.0. With SnCl 4 As the amount of addition increased, the solution gradually appeared silvery white (140mL), golden (210mL), red (250mL), blue (315mL) and green (375mL). Stop adding SnCl when desired color is obtained 4 , and reflux for more than 10 minutes. The necessary amount of acidic solution was filtered, washed, dried and calcined as described in Example 1 to obtain flake pigments.

[0044] Analysis of the calcined pigments according to X-ray diffraction showed the formation of a titanium dioxide layer of rutile structure on the sur...

experiment Embodiment 2

[0056] The color difference of the pigment of Example 2 and sericite and talc, which are generally used in pigment extenders, was measured, and the results are shown in Table 2. Based on the alumina color difference, the relative values ​​of color difference (da * 、db * 、dE * ).

[0057] Measuring Color Difference Using a Colorimeter

[0058] The color difference was measured at 25° using a spectrophotometer CM-512M3 (KONICA MINOLTA SENSING, INC.) by using a squeegee card as described in Test Example 1 for squeegee coating.

[0059] Table 2

[0060]

[0061] As shown in Table 2, alumina, sericite, and talc have low brightness and color coordinates, resulting in difficulty in color development (white powder), and the pigment of Example 2 has a unique interference color.

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Abstract

The present invention relates to a flake pigment, a preparation method thereof and a cosmetic composition comprising the same, and particularly to a flake pigment prepared by coating a metal oxide on the surface of a flake synthetic aluminum having predetermined ranges of an aspect ratio and an average particle diameter, wherein the pigment shows interference colors while reducing the glossiness, thereby enabling cosmetics containing the pigments to be superior in natural transparency and adhesive and slipping properties as well as in color expression and a mat feel due to a low glossiness, along with a preparation method thereof and a cosmetic composition comprising the same.

Description

technical field [0001] The present invention relates to a flake pigment and a preparation method thereof, and a cosmetic composition comprising the flake pigment, in particular to a flake pigment prepared by coating a metal oxide on the surface of a flake synthetic aluminum, as well as a preparation method of the pigment and Cosmetic compositions comprising same. The flake-like synthetic aluminum has a predetermined aspect ratio and an average particle diameter range in which the pigment exhibits interference color while reducing gloss, thereby enabling cosmetics containing the pigment to have natural transparency and adhesion and smoothness and smoothness due to the low gloss. Excellent performance in color development and matte feel. Background technique [0002] Pigments for use in cosmetic compositions preferably exhibit good skin feel (e.g. smoothness and adhesion), suitable covering effects (e.g. translucency or natural skin tone) and suppress excessive gloss caused b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C1/64A61K8/00
CPCC01P2006/63A61K2800/651A61K2800/621A61K8/19C09C1/407A61K8/11A61K8/26A61Q1/12C01P2006/64C01P2006/62A61K8/0266C09C2200/1004A61K8/02C01P2004/54C09C2200/1054C09C1/0021C01P2004/20A61Q1/02A61K8/28A61K2800/436C01P2004/61C09C2220/10A61Q19/00C09C1/642C09C2220/106A61K8/29A61K2800/412C09C1/62
Inventor 姜光中赵晟伦林光水张吉琓
Owner CQV
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