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Water-in-oil emulsified cosmetic

A technology of emulsifying cosmetics and water-in-oil type, applied in cosmetics, cosmetic preparations, dressing preparations, etc.

Active Publication Date: 2013-11-06
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in any of the above-mentioned patent documents, there is still room for improvement in the feeling of use when the cosmetic is applied to the skin.

Method used

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  • Water-in-oil emulsified cosmetic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3、5

[0121] (Preparation method) The component (B) was put into the container for 2 L vacuum emulsifiers, and it heated to 85 degreeC. After confirming that the component (B) was dissolved, the components (A), (C), and (D) were added and stirred at 80 rpm. Next, the water phase containing the component (E) heated to 85 degreeC was added, and it stirred at 8000 rpm at high speed for 10 minutes under reduced pressure, and emulsified. Thereafter, it was cooled to room temperature at a cooling rate of 1.0° C. / min while stirring at 100 rpm under reduced pressure.

Embodiment 4

[0123] (modulation method)

[0124] Emulsification was carried out in the same manner as in Example 1, and the cooling rate after emulsification was 1.5°C / min.

Embodiment 6

[0133] (modulation method)

[0134] It manufactured similarly to Example 1 except that the high-speed stirring rotation speed was 10000 rpm, and the cooling rate after emulsification was 1.5 degreeC / min.

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Abstract

A water-in-oil emulsified cosmetic including components (A) to (E) below: (A) an oil that is a liquid at 25°C, (B) an oil that is a solid at 25°C, (C) a hydrophobic powder having an average particle size of 8 to 30 µm, (D) a surfactant having an HLB of no greater than 8, and (E) water, component (A) having a content of 10 to 50 wt%, component (B) having a content of 0.5 to 15 wt%, component (C) having a content of 0.5 to 10 wt%, and component (D) having a content of 0.2 to 10 wt%, the proportions by weight ratio of components (A) to (E) satisfying the relational expressions (1) to (3) below, E : A + B + C = 10 : 90 to 70 : 30 0.25 ‰¤ B + C / A ‰¤ 0.7 B > C 3 , emulsified particles, emulsified from an aqueous phase component containing component (E), having an average emulsified particle size of 0.1 to 25 µm, the relationship in size of the average emulsified particle size, average particle size of component (B), and average particle size of component (C) being (average particle size of component (C)) > (average particle size of component (B)) > (average emulsified particle size), and the cosmetic having a viscosity measured at 25°C and 5 rpm using a T-bar spindle D of 500 to 3,000 dPa·s.

Description

technical field [0001] The invention relates to a water-in-oil emulsified cosmetic. Background technique [0002] Cosmetics are provided in the form of cream emulsions that combine water, water-soluble oils as various moisturizers, and oils to replenish moisture and oil to the skin. The user's sense of the effect of cosmetics is not only obtained by the ingredients in the composition, but also varies according to the various physical properties of the cosmetic emulsion. For example, the luster of the cosmetic emulsion, the smoothness when applied, the affinity with the skin and other properties. [0003] On the other hand, researchers have studied how to change the feeling of use when applying cosmetics by adding various powders to cosmetics. Specifically, by coating the spherical powder on the skin surface, the tactility of the sphere itself improves the softness of the cosmetics, the goodness of affinity, and the absence of stickiness or smoothness. [0004] Patent Docu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/06A61K8/89A61K8/92A61K8/97A61K8/98A61K8/891A61K8/892A61K8/897A61Q19/00
CPCA61Q19/00A61K8/88A61K8/8152A61K8/06A61K8/26A61K8/25A61K8/87A61K8/064A61K8/891A61K2800/412A61K8/42A61K8/63A61K8/68
Inventor 大窪幸治
Owner KAO CORP
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