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Emulsion cosmetic composition comprising inorganic UV blocking agent and preparation method thereof

A cosmetic composition and composition technology, applied in the direction of cosmetic preparations, cosmetics, dressing preparations, etc., can solve the problem of impractical application, difficulty in uniformly producing amphiphilic anisotropic powder, and the development of amphiphilic anisotropic powders that have not yet been developed. Anisotropic powder and other problems, to achieve the effect of improving white turbidity, excellent formulation stability, excellent water resistance and durability

Active Publication Date: 2021-10-29
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 inorganic UV blocking agent and preparation method thereof
  • Emulsion cosmetic composition comprising inorganic UV blocking agent and preparation method thereof
  • Emulsion cosmetic composition comprising inorganic UV blocking agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1 to 4

[0111] Preparation Examples 1 to 4 were obtained according to the composition of Table 1 below. Hereinafter, the preparation method will be explained.

[0112] The ingredients used in Preparation Examples 1 to 4 are shown below.

[0113] [Table 1]

[0114]

[0115] MeOH: methanol (co-solvent)

[0116] KPS: potassium persulfate (initiator)

[0117] SVBS: sodium vinylbenzene sulfonate (stabilizer)

[0118] PS: polystyrene (polymer beads)

[0119] CS: Coated first polymer spheres with core-shell structure

[0120] DB: Amphiphilic anisotropic powder

[0121] TMSPA: Trimethoxysilylpropyl acrylate (functional group)

[0122] AIBN: azobisisobutyronitrile (polymerization initiator)

preparation example 1

[0123] Preparation Example 1. Preparation of Polystyrene (PS) First Polymer Spheroids

[0124]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

[0125] Preparation Example 2. Preparation of Coated First Polymer Spheroids with Core-Shell (CS) Structure

[0126] 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

This specification relates to an emulsion cosmetic composition comprising an inorganic UV blocking agent which is an inorganic powder and an amphiphilic anisotropic powder comprising a first hydrophilic polymer spheroids and second polymer spheroids having hydrophobicity, the first polymer spheroids and the second polymer spheroids are combined with each other in a structure that at least partially penetrates the opposing polymer spheroids, the The first polymer spheres have a core-shell structure, the shells comprising functional groups.

Description

technical field [0001] The present disclosure relates to an emulsion-type cosmetic composition comprising an inorganic UV blocker and a method for preparing the same. Background technique [0002] UV blocking agents used in UV blocking cosmetics are roughly classified into organic UV blocking agents and inorganic UV blocking agents. Although the organic UV blocking agent has an excellent UV blocking effect, it causes stickiness and problems related to skin safety due to penetration into the skin. Although inorganic UV blockers are mainly used by dispersing inorganic powders into formulations, they do not cause stickiness and exhibit high skin safety, which can cause white turbidity due to agglomeration of inorganic powders and can provide dry usability. In order to prevent such powder agglomeration problems of inorganic UV blockers and to wet out the UV blockers into the formulation, large amounts of thickeners and dispersants can be added. However, this can cause problem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/29A61K8/27A61K8/25A61K8/19A61K8/49A61K8/81A61K8/72A61K8/06A61Q19/00
CPCA61K8/25A61K8/27A61K8/29A61K8/49A61K8/72A61K8/81A61Q19/00A61K8/06A61K8/19
Inventor 金姃珢南珍申智植朴贞恩金相润蔡秉根姜炳永
Owner AMOREPACIFIC CORP
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