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Manufacturing method for O/W emulsion composition

A technology for emulsified composition and water phase, applied in cosmetic preparations, preparations for skin care, medical preparations with inactive ingredients, etc., can solve problems such as composition limitations, and achieve easy preparation, excellent storage stability, and low energy consumption. Effect

Active Publication Date: 2013-12-18
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the method of Patent Document 1, a W / O emulsion is prepared once based on a specific composition, and then a fine O / W emulsion is formed by inverting the phase, so the composition may be limited.
Moreover, in Patent Document 1, there is no description about a method for preparing an O / W emulsion without phase inversion of the W / O emulsion.

Method used

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  • Manufacturing method for O/W emulsion composition
  • Manufacturing method for O/W emulsion composition
  • Manufacturing method for O/W emulsion composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation method of the O / W emulsified composition of the present invention is characterized in that: the oil phase and a part of the water phase are emulsified at a temperature above 70°C to prepare a high-concentration emulsified part as an O / W emulsified product, the oil The phase contains (A) monobranched fatty acid POE (0-60) glyceride, (B) a linear higher alcohol with 16 or more carbon atoms capable of forming an alpha gel in water together with (A) above, and (C) Oil fraction, the aqueous phase comprising (D) water, cooled by mixing this emulsified portion with the remaining main aqueous phase at 10-35°C while stirring, and the amount of aqueous solvent in the above-mentioned high concentration O / W emulsified portion When it is 15% by mass or less, an α-gel is formed at the emulsified particle interface of the obtained O / W emulsified composition.

[0029] The above-mentioned α-gel refers to an association including a layered bimolecular membrane formed by a...

Embodiment 1

[0114] Example 1 Emulsion

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[0119]

[0120]

[0121]

[0122] An O / W emulsion was obtained by the method according to preparation method B. The viscosity of the obtained emulsion was 4,370 mPa·s / 30°C. This emulsion has a feeling of use equivalent to that of a ready-made product (O / W emulsion obtained according to the production method A of cooling with a cooling cylinder, etc.) with the same composition, and is also excellent in storage stability.

Embodiment 2

[0123] Example 2 Emulsion

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[0125]

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[0127]

[0128]

[0129]

[0130]

[0131] An O / W emulsion was obtained by the method according to preparation method B. The viscosity of the obtained emulsion was 3,690 mPa·s / 30°C. This emulsion has a feeling of use equivalent to that of a ready-made product (O / W emulsion obtained according to the production method A of cooling with a cooling cylinder, etc.) with the same composition, and is also excellent in storage stability.

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Abstract

Provided is a manufacturing method for an O / W emulsion composition exhibiting excellent economical properties and capable of being easily manufactured without using a special cooling device. The method according to the present invention is characterized in that: the emulsified parts of the O / W emulsion are prepared by emulsifying, at a temperature equal to or greater than 70 DEG C, an oil phase containing (A) a mono-branched fatty acid POE (0-60) glycerin ester, (B) a linear higher alcohol that has 16 or more carbon atoms and can form, together with (A), an alpha-gel in water, (C) an oil component, and also by emulsifying part of an aqueous phase (a first aqueous phase) containing (D) water; the emulsified parts are cooled by stirring and mixing with the remaining aqueous phase (a second aqueous phase) at 10-35 DEG C; and the aqueous solvent that constitutes the emulsified parts is 15% or lower by mass.

Description

[0001] related application [0002] This application claims the priority of Japanese Patent Application No. 2011-43593 filed on March 1, 2011, and incorporates it into the present invention. technical field [0003] The present invention relates to a preparation method of an O / W emulsified composition, particularly a preparation method excellent in simplicity and economy. Background technique [0004] Conventionally, in order to maintain the emulsion stability of external skin preparations such as cosmetics, quasi-drugs, and pharmaceuticals, an O / W emulsified composition using a non-ionic surface compound composed of a higher aliphatic alcohol and a polyoxyethylene type has been used. Alpha gels formed from active agents, in particular, are known to be used as cosmetics for this O / W emulsified composition. As a method for preparing such an O / W emulsified composition, the following method is adopted: the oil component and the higher alcohol as essential components are mixed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/06A61K8/34A61K8/39A61K8/86A61K8/92A61K9/107A61K47/10A61K47/34A61Q19/00
CPCA61K8/042A61K8/062A61K8/342A61K8/361A61K8/37A61K8/375A61K8/39A61K8/442A61K8/8111A61K8/86A61K8/891A61K9/107A61K47/14A61Q19/00A61K8/06A61K8/34A61K8/92
Inventor 宇山允人宫原令二荒木秀文
Owner SHISEIDO CO LTD