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Chemically anisotropic powder and cosmetic composition containing same and having stable effect raw materials

A cosmetic composition, anisotropic technology, applied in the direction of medical preparations, cosmetics, cosmetic preparations containing active ingredients, etc., can solve the problem of damage to the thickener system, unpleasant feeling of use, poor viscosity and stability of preparations, etc. problem, achieve the effect of preventing polymerization and phase separation, overcoming discoloration or odorization, and preventing damage

Inactive Publication Date: 2020-08-14
AMOREPACIFIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in some cases, this active material can show high effect in formulations, but provide unpleasant feeling of use from discoloration or odorization
In particular, when the salt-type active material exists in the formulation, the thickener system will be destroyed, causing emulsion particle polymerization and phase separation, resulting in poor viscosity and stability of the formulation

Method used

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  • Chemically anisotropic powder and cosmetic composition containing same and having stable effect raw materials
  • Chemically anisotropic powder and cosmetic composition containing same and having stable effect raw materials
  • Chemically anisotropic powder and cosmetic composition containing same and having stable effect raw materials

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0089] [Preparation Example 1] Preparation of polystyrene (PS) first polymer spheres

[0090] Styrene (as a monomer), sodium p-styrene sulfonate (as a stabilizer), and azobisisobutyronitrile (AIBN, azobisisobutyronitrile) (as an initiator) are mixed in a liquid phase and allowed to °C for 8 hours. The reaction was carried out by stirring the reaction mixture at a speed of 200 rpm in a cylindrical reactor with a diameter of 11 cm (centimeter) and a height of 17 cm (centimeter) made of glass.

preparation Embodiment 2

[0091] [Preparation Example 2] Preparation of coated first polymer spheres having a core-shell (CS) structure

[0092] The polystyrene (PS) first polymer spherical particles obtained as described above are mixed styrene (as a monomer), 3-(trimethoxysilyl) propyl acrylate (TMSPA) and azobisisobutyl Nitrile (AIBN) (as the initiator) and the reaction mixture was allowed to react. The reaction is carried out by stirring the reaction mixture in a cylindrical reactor.

preparation Embodiment 3

[0093] [Preparation Example 3] Preparation of anisotropic powder

[0094] Aqueous dispersions of polystyrene core-shell (PC-CS) dispersions obtained as previously described are mixed styrene (as a monomer), sodium p-styrene sulfonate (as a stabilizer), and azobisisobutyl Nitrile (AIBN) (as the initiator), and the reaction mixture was heated to 75°C for the reaction. The reaction is carried out by stirring the reaction mixture in a cylindrical reactor. In this way, an amphiphilic anisotropic powder was obtained.

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Abstract

Disclosed is a cosmetic composition, containing a chemical anisotropic powder, with a stabilized effective raw material. The feature disclosed in the present specification provides a cosmetic composition, which, in the formulation of an effective raw material, solves problems of color change, smell change, and the like, of the effective raw material, due to changes in external conditions, such as pH and salt, conserves thresholds thereof, and prevents the collapse of the incremental system, thereby having a stabilized formulation without coalescence and phase separation of emulsification particles.

Description

【Technical field】 [0001] The present invention relates to a cosmetic composition comprising a chemically anisotropic powder and a stable active material. 【Background technique】 [0002] Various methods of preparing microparticles of different shapes and sizes (nano-sized, micron-sized, etc.) have been reported. In particular, polymer-containing spherical microparticles have a particle size and shape that can be controlled according to their preparation methods, and thus have high applicability. For example, Pickering emulsions using spherical microparticles to form stable macroemulsion particles are provided. [0003] Pickering emulsions using solid spherical powders form W / O emulsions or O / W emulsions, depending on the wettability of the solid powder interface, that is, depending on the degree of lipophilicity versus hydrophilicity. A contact angle in between is a factor determining the orientation of the surface film. When the contact angle is less than 90°, a larger pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/81A61K8/58A61K8/06A61K8/20A61Q19/00A61Q19/02A61Q19/08
CPCA61K8/064A61K8/20A61K8/585A61K8/8117A61K8/8152A61K2800/52A61Q19/00A61Q19/02A61Q19/08
Inventor 申智植南珍朴城逸安顺爱姜炳永韩相勋
Owner AMOREPACIFIC CORP
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