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cosmetic

A cosmetic, flake-like technology, applied in the cosmetic field, can solve the problem of no disclosure of use, etc., and achieve the effects of excellent safety and excellent texture fineness of finishing

Active Publication Date: 2020-06-09
JO COSMETICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in this document, there is no disclosure of using the obtained synthetic talc as a raw material for cosmetics.

Method used

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  • cosmetic
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Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0105] Mix 25 parts of silica gel (manufactured by High Purity Chemical Co., Ltd., reagent special grade) and 25 parts of magnesium hydroxide (Kojun Chemical Co., Ltd., reagent special grade) with an automatic mortar for one hour, and then, powdered The mixture is filled into a gold tube. Next, after pouring 50 parts of purified water into the gold tube, the mouth of the tube was sealed. The gold tube was fixed in a test tube type hydrothermal synthesis apparatus, and hydrothermal synthesis treatment was performed at 600°C for 5 days under a high pressure of 1,000 bar without stirring to obtain powdery particles (sample name; synthetic talc A).

manufacture example 2

[0107] Except having set the usage-amount of silica gel and magnesium hydroxide to 28 parts and 22 parts, respectively, it carried out similarly to manufacture example 1, and obtained the powdery particle (sample name; synthetic talc B).

manufacture example 3

[0109] Except that the temperature of the hydrothermal synthesis treatment was changed from 600°C to 500°C, powdery particles (sample name; synthetic talc C) were obtained in the same manner as in Production Example 1.

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Abstract

Cosmetics excellent in transparency, elongation, smoothness, affinity for skin, and safety are prepared by using synthetic talc, which is an octahedral sheet sandwiched between two tetrahedral sheets. A basic structure of flaky particles formed, the flaky particles including a 2:1 type layered silicate crystal represented by the following general formula (1), the flaky particles having a volume average particle diameter of 0.5 to 100 μm, In non-oriented powder X-ray diffraction measurement (XRD) using Kα rays of Cu, the half-maximum half-width of the peak existing at 2θ=9.4°±1° is 0.3° or less, and Mg is not substantially contained. 3 Si 2 O 5 (OH) 4 .

Description

technical field [0001] The present invention relates to a cosmetic containing synthetic talc and having excellent usability and safety. Background technique [0002] Currently, in cosmetics, various powders are used according to their purpose or use. These powders can be appropriately selected from natural or synthetic powders, or powders obtained by compounding them, etc., in consideration of functional properties, usability such as slipperiness during use, and the like. Among them, talc is a flat plate-shaped crystal that is easy to slide just like talc, and has a sense of transparency and is a very soft mineral with a Mohs hardness of 1. Therefore, it has been used to improve transparency, It is blended in cosmetics for the purpose of elongation and smoothness. However, talc used in cosmetics is a substance obtained by pulverizing naturally occurring minerals into a fine powder, and therefore, there are troublesome problems such as pulverization and classification in it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/25A61Q1/12A61Q17/04
CPCA61K8/0266A61K8/25A61K2800/262A61K2800/412A61Q1/02A61Q1/12A61Q17/04A61K8/062
Inventor 木村弘子
Owner JO COSMETICS
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