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Zinc oxide particles and cosmetic material

A technology of zinc oxide particles and cosmetics, applied in the direction of zinc oxide/zinc hydroxide, cosmetics, cosmetics, etc., to achieve the effect of excellent transparency and excellent makeup durability

Active Publication Date: 2013-05-22
SAKAI CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no record about incorporating these zinc oxide particles into cosmetics

Method used

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  • Zinc oxide particles and cosmetic material
  • Zinc oxide particles and cosmetic material
  • Zinc oxide particles and cosmetic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Type 1 zinc oxide (manufactured by Sakai Chemical Industry Co., Ltd.) was put into a square sagger, and fired at 1000° C. in an electric furnace to obtain large particles of zinc oxide. The average particle diameter of the obtained zinc oxide particles was 10.7 μm.

Embodiment 2

[0064] Type 1 zinc oxide (manufactured by Sakai Chemical Industry Co., Ltd.) was put into a square sagger, and fired at 850° C. in an electric furnace to obtain large particles of zinc oxide. The average particle diameter of the obtained zinc oxide particles was 5.2 μm.

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Abstract

The invention aims to obtain large zinc oxide particles which have excellent transparency and capabilities such as infrared reflection and do not have a negative effect on texture when added to a cosmetic product, and to obtain a cosmetic material in which the zinc oxide particles are mixed. [Solution] Zinc oxide particles characterized in that the average particle size is 3 to 20 [mu]m, the average friction coefficient is 3 or less, the total visible light transmittance is 85% or greater, and the near infrared reflectivity is 80% or greater.

Description

technical field [0001] The present invention relates to zinc oxide particles and cosmetics. Background technique [0002] In the field of cosmetic applications, zinc oxide particles are mainly used in products for sunscreens as ultraviolet absorbers. Zinc oxide particles used in such applications are almost ultrafine particles of 100 nm or less. However, zinc oxide particles are rarely used in basic cosmetics such as lotion and lotion, and beauty cosmetics such as foundation, lipstick, and eye shadow. [0003] Among the above-mentioned basic cosmetics and beauty cosmetics, the sense of touch is very important. Also, it is important not to cause whitening (whitening) when applied to the skin. Therefore, particles excellent in these functions, such as talc, sericite, platy barium sulfate, and boron nitride, are used in basic cosmetics and cosmetic cosmetics. [0004] It is known that zinc oxide is blended for the purpose of imparting ultraviolet absorbing performance to ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02A61K8/27A61Q17/04
CPCA61Q1/02A61Q1/10A61K2800/26A61K2800/262A61K8/37A61Q1/06C01G9/02C01P2004/61A61K8/0241A61K2800/244A61K8/27A61Q1/00A61Q19/00A61Q17/04A61Q1/12A61K2800/413A61Q1/08A61K2800/412Y10T428/2982
Inventor 桥本充央箱崎宽
Owner SAKAI CHEM IND CO LTD
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