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O/w emulsion composition

A technology of emulsified composition and emulsified products, which can be used in chemical/physical processes, cosmetics, cosmetic preparations, etc. It can solve the problems that it is difficult to stably mix organic ultraviolet absorbers and silicone oils, and achieve the effect of excellent use feeling

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

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Problems solved by technology

[0014] However, even with such an O / W emulsified composition, it is difficult to stably mix the above-mentioned organic ultraviolet absorber and silicone oil

Method used

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Examples

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Embodiment

[0089] 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.

[0090] (average emulsified particle size)

[0091] The particle size distribution of the emulsified particles immediately after the preparation of the first oil-phase emulsion (first emulsion) was measured using Zetasizer Nano ZS (Sysmex Co., Ltd.).

[0092] (sense of use)

[0093] 20 female subjects applied the test sample immediately after preparation to the face by hand, and investigated the sticky feeling during application and the sticky feeling at the time of absorption, and evaluated according to the following criteria.

[0094] ◯: 16 or more test subjects answered that there was no stickiness.

[0095] Δ: 6 to 15 test subjects answered that there was no stickiness.

[0096] ×: Five or less tes...

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Abstract

An O / W emulsion composition having excellent preparation stability, feeling of use and ultraviolet light blocking properties. The O / W emulsion composition has the first oil phase and second oil phase described below, which are separately dispersed in a water phase. (i) a first oil phase which is formed by using a polyoxyethylene / polyoxyalkylene alkyl ether block polymer represented by general formula (1) or (2) as an emulsifying agent, and contains an organic ultraviolet absorbent, while having an average particle diameter of not more than 700 nm (ii) a second oil phase which is formed by using an alkyl-modified carboxyvinyl polymer as an emulsifying agent, and contains a silicone oil 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 grouphaving 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 priority to Japanese Patent Application No. 2008-282276 filed on October 31, 2008, the contents of which are incorporated herein. technical field [0003] The present invention relates to an oil-in-water (O / W) emulsified composition, in particular to an O / W emulsified composition containing an oil-soluble organic ultraviolet absorber and silicone oil, which has excellent formulation stability and usability, and is suitable as a sunscreen cosmetic. 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] Although the O / W emulsified composition contains oil, it can give a moist and refreshing feeling of use. Therefore, it is self-evident that it can be used as basic cosmetics such as emulsions and cre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/06A61K8/37A61K8/40A61K8/49A61K8/81A61K8/86A61K8/89A61Q17/04C09K23/42C09K23/52
CPCA61K8/062A61K8/8152A61K8/06A61Q17/04A61K2800/21A61K8/86A61K8/891A61K8/068A61K8/37
Inventor 高仓登美子黑泽卓文
Owner SHISEIDO CO LTD
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