O/W emulsion composition

An emulsified composition and oil phase technology, applied in chemical/physical processes, cosmetics, cosmetic preparations, etc., can solve the problems of phenol particle coarsening, precipitation inhibition, etc., and achieve excellent use feeling and formulation stability Effect

Active Publication Date: 2011-09-28
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, no studies have been conducted on the coarsening of methylenebisbenzotriazolyltetramethylbutylphenol particles and the inhibition of precipitation when octocrylene is blended.

Method used

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  • O/W emulsion composition
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Examples

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Comparison scheme
Effect test

Embodiment

[0098] Although specific examples are given below and this invention is further demonstrated, this invention is not limited to these. Unless otherwise specified, the compounding quantity means mass %. In addition, the evaluation method used in this invention is as follows.

[0099] (average emulsified particle size)

[0100] The particle size distribution of the emulsified particles immediately after preparation of the O / W emulsified composition was measured using Zetasizer Nano ZS (Sysmex Corporation).

[0101] (sense of use)

[0102] 20 female test subjects applied the test sample immediately after preparation to the face by hand, investigated the sticky feeling during application, and evaluated according to the following criteria.

[0103] ◯: 16 or more test subjects answered that there was no stickiness.

[0104] Δ: 6 to 15 test subjects answered that there was no stickiness.

[0105] ×: Five or less test subjects answered that there was no stickiness.

[0106] (emul...

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Abstract

An O / W emulsion composition having excellent ultraviolet light blocking properties, preparation stability and feeling of use, wherein an oily organic ultraviolet absorbent such as octocrylene and a solid organic ultraviolet absorbent are blended. The O / W emulsion composition contains the components (a)-(c) mentioned below, and an oil phase containing the component (a) has an average particle diameter of not more than 700 nm. (a) an organic ultraviolet absorbent containing (a1) octocrylene, which is in an oil form at 20 DEG C (b) an organic ultraviolet absorbent selected from (b1) bis-ethylhexyloxyphenol methoxyphenyl triazine and (b2) methylene bis-benztriazolyl tetramethylbutylphenol, which is in a solid state at 20 DEG C (c) a polyoxyethylene / polyoxyalkylene alkyl ether block polymer represented by general formula (1) or (2): R1O-(PO)m-(EO)n-H (1) (In the formula, R1 represents a hydrocarbon group having 16-18 carbon atoms; PO represents an oxypropylene group; EO represents an oxyethylene group; PO and EO are added in blocks; and m and n respectively represent average mole numbers of added PO and EO and satisfy 70 > m > 4, 70 > n > 10 and n > m.) R2O-(AO)p-(EO)q-R3 (2) (In the formula, R2 and R3 may be the same or different and each represents a hydrocarbon group having 1-4 carbon atoms; AO represents an oxyalkylene group having 3-4 carbon atoms; EO represents an oxyethylene group; AO and EO are added in blocks; and p and q respectively represent average mole numbers of added AO and EO and satisfy 1 = p = 70, 1 = q = 70 and 0.2 < (q / (p + q)) < 0.8.)

Description

[0001] related application [0002] This application claims the priority of Japanese Patent Application Nos. 2008-282274 and 2008-282275 filed on October 31, 2008, the contents of which are incorporated herein. technical field [0003] The invention relates to an oil-in-water (O / W) emulsified composition, in particular to an oil-like, oil-soluble organic ultraviolet absorber at normal temperature and a solid organic ultraviolet absorber at normal temperature, the stability of the preparation and the feeling of use Excellent, suitable as an O / W emulsified composition for sunscreen cosmetics. Background technique [0004] In recent years, the influence of ultraviolet rays on the skin has been widely known. In addition, users' awareness of whitening has increased, and cosmetics with higher ultraviolet protection capabilities and good usability are required. [0005] O / W emulsified composition contains oil, but it can give a moist and refreshing feeling, so it is self-evident t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/86A61K8/06A61K8/37A61K8/40A61K8/49A61Q17/04C09K23/42C09K23/52
CPCA61K8/062A61K8/496A61K8/4966A61Q17/04A61K8/40A61K8/068A61K8/86A61K8/06A61K8/37
Inventor 高仓登美子黑泽卓文矢岛勋藤山希
Owner SHISEIDO CO LTD
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