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Emulsion cosmetic composition comprising optical interference pigment and method for preparing same

A cosmetic composition, light interference technology, applied in cosmetic preparations, cosmetics, cosmetics, etc., can solve the problem of unpractical application, difficulty in uniformly producing amphiphilic anisotropic powder, and no amphiphilic anisotropic powder has yet been developed. Powder, etc.

Active Publication Date: 2018-07-17
AMOREPACIFIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although such amphiphilic anisotropic powders show high applicability, methods for mass production of amphiphilic anisotropic powders have not been developed so far
Moreover, it is difficult to uniformly produce amphiphilic anisotropic powders in large quantities on an industrial scale, which leads to impractical application

Method used

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  • Emulsion cosmetic composition comprising optical interference pigment and method for preparing same
  • Emulsion cosmetic composition comprising optical interference pigment and method for preparing same
  • Emulsion cosmetic composition comprising optical interference pigment and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1 to 4

[0113] Preparation Examples 1 to 4 were obtained according to the composition of Table 1 below. Hereinafter, the preparation method will be explained.

[0114] The ingredients used in Preparation Examples 1 to 4 are shown below.

[0115] [Table 1]

[0116]

[0117] MeOH: methanol (co-solvent)

[0118] KPS: potassium persulfate (initiator)

[0119] SVBS: sodium vinylbenzene sulfonate (stabilizer)

[0120] PS: polystyrene (polymer beads)

[0121] CS: Coated first polymer spheres with core-shell structure

[0122] DB: Amphiphilic anisotropic powder

[0123] TMSPA: Trimethoxysilylpropyl acrylate (functional group)

[0124] AIBN: azobisisobutyronitrile (polymerization initiator)

preparation example 1

[0125] Preparation Example 1. Preparation of Polystyrene (PS) First Polymer Spheroids

[0126] First, 50 g of styrene as a monomer, 1.0 g of sodium 4-vinylbenzenesulfonate as a stabilizer, and 0.5 g of azobisisobutyronitrile (AIBN) as a polymerization initiator were mixed in an aqueous phase, and It was allowed to react at 75°C for 8 hours. The reaction was carried out by stirring the reaction mixture at a speed of 200 rpm in a cylindrical reactor having a diameter of 11 cm and a height of 17 cm and made of glass.

preparation example 2

[0127] Preparation Example 2. Preparation of Coated First Polymer Spheroids with Core-Shell (CS) Structure

[0128]First, 300 g of polystyrene (PS) first polymer spherical particles obtained as described above were mixed with 50 g of styrene as a monomer, 6 g of 3-(trimethoxysilyl)propyl acrylate (TMSPA) and 0.2 g Azobisisobutyronitrile (AIBN) as a polymerization initiator was mixed, and the reaction mixture was reacted at 75° C. for 8 hours. The reaction is carried out by stirring the reaction mixture in a cylindrical reactor.

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Abstract

The present description relates to an emulsion cosmetic composition comprising amphiphilic anisotropic powder and an optical interference pigment having an average particle diameter of 1-20 [mu]m. Theamphiphilic anisotropic powder comprises first polymer spheroids, which are hydrophilic, and second polymer spheroids which are hydrophobic. The first polymer spheroids and second polymer spheroids bond in a structure in which the first and second polymer spheroids penetrate each other at least partly. The first polymer spheroids have a core-shell structure, and the shell comprises a functional group.

Description

technical field [0001] The present disclosure relates to an emulsion-type cosmetic composition comprising an optical interference pigment and a method for preparing the same. Background technique [0002] Optical interference pigments used in cosmetics have a plate-like or needle-like shape, unlike amorphous pigments used to achieve general hues to provide a visual effect imparting a pearl-like effect. In addition, it is necessary to incorporate such light interference pigments at least in a predetermined amount to impart visual effects. When powders such as fine interference pearls are incorporated into emulsion-type cosmetic compositions, light interference pigments attack the emulsion interface due to their shape characteristics and high content, making it difficult to maintain emulsion stability and causing a decrease in the viscosity of emulsion particles and Size up. In order to solve such problems, a large amount of thickener is used to prevent coalescence of pearl ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/19A61K8/26A61K8/25A61K8/72A61K8/81A61K8/89A61K8/06
CPCA61K8/891A61K8/0245A61K8/062A61K8/8117A61K8/8152A61K2800/412A61K2800/436A61K2800/654A61Q1/02A61K8/20A61K8/29A61K8/585
Inventor 金荣宣南珍皮凤树秦榆琎安顺爱姜炳永
Owner AMOREPACIFIC CORP
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