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Oil-in-water emulsion cosmetic

A technology of emulsifying cosmetics and oil-in-water type, which is applied in the direction of cosmetics, cosmetics, cosmetic preparations, etc., and can solve the problems of reduced touch and stability, water seepage, and inability to fully exert the thickening effect.

Active Publication Date: 2021-05-14
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when (PEG-240 / decyltetradeceth-20 / HDI) copolymer is blended as an associative thickener in powder-containing oil-in-water emulsified cosmetics, the thickening effect cannot be fully exhibited , there is a problem that the feeling of use and stability are also reduced
[0006] In Patent Document 4, the above-mentioned problem is solved by further compounding a thickening polysaccharide and a specific dispersant, but the existing thickening agent is thickened by (PEG-240 / decyltetradeceth-20 / HDI) copolymer The static viscosity of the system is low, and water seepage (dehydration) may occur during long-term storage

Method used

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  • Oil-in-water emulsion cosmetic
  • Oil-in-water emulsion cosmetic
  • Oil-in-water emulsion cosmetic

Examples

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Embodiment

[0092] Hereinafter, specific examples will be given to describe the present invention in further detail, but the present invention is not limited to the following examples. In addition, the compounding quantity in a following example etc. shows mass % unless there is a notice especially.

[0093] Oil-in-water emulsified cosmetics having compositions disclosed in Tables 1 to 3 below were prepared. Specifically, by mixing the water phase part and the oil phase part until uniform, disperse the powder part into the oil phase part using a homomixer, add it to the water phase part, and emulsify using a homomixer, thereby preparation.

[0094] With respect to the obtained cosmetics of each example, shape restoration ability, water exudation, and powder aggregation were evaluated according to the following criteria.

[0095]

[0096] (1) Shape recovery ability

[0097] The cosmetics of each example were filled to 90% of the surface of a plastic cream bottle container (capacity 50...

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Abstract

The purpose of the present invention is to provide an oil-in-water emulsion cosmetic that is thickened using an associative thickener containing a hydrophobic modified polyether urethane, that stably holds a hydrophobization powder in an inner oil phase, and that does not release water even after long-term storage, without a reduction in usage sensations regarding moistness, resilience, and smoothness originally possessed by the oil-in-water emulsion cosmetic. The present invention is an oil-in-water emulsion cosmetic characterized by comprising (A) a hydrophobic modified polyether urethane having a specific structure such as polyurethane-59, (B) a polyether modified silicone having an HLB (Si) of 5-14, and (C) a hydrophobization powder. The cosmetic according to the present invention preferably further comprises (D) a lower alcohol and / or a polyol, and / or (E) a nonionic surfactant having an HLB of 8-18. The hydrophobization powder (C) is preferably a metal oxide powder treated with triethoxycaprylylsilane, dimethicone, hydrogen dimethicone, or a metallic soap.

Description

technical field [0001] The present invention relates to oil-in-water emulsified cosmetics. More specifically, it relates to a water-in-pack that incorporates hydrophobically modified polyether urethane with a specific structure to give it a springy touch, and maintains the hydrophobized powder in the internal oil phase stably without dehydration. Oil-type emulsified cosmetics. Background technique [0002] In the technical fields of pharmaceuticals and cosmetics, various thickeners are added in order to maintain the dosage form, stability or improve the feeling of use. Water-soluble thickeners are widely used in oil-in-water emulsified cosmetics that provide a refreshing and moist touch when applied to the skin. Among them, an associative thickener composed of hydrophobically modified polyether urethane is known as a type of water-soluble thickener excellent not only in viscosity stability but also in usability. [0003] In Patent Document 1, it is described that by combi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/87A61K8/06A61K8/27A61K8/29A61K8/893A61Q19/00
CPCA61Q19/00A61K8/87A61K8/062A61K8/898A61K2800/10A61Q17/04A61Q19/02A61K8/27A61K8/29A61K8/894A61K2800/43A61K2800/594A61Q1/02
Inventor 永礼由布子田代麻友里
Owner SHISEIDO CO LTD
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