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Oil-in-water emulsion cosmetic composition

A technology for oil-in-water type cosmetics, which is applied in the field of oil-in-water emulsified cosmetics to achieve excellent stability, increased freedom, and excellent water resistance

Active Publication Date: 2021-04-20
DOW TORAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these documents, the combined use of vinyl-based polymer emulsion and carboxylic acid-modified silicone and the combination of specific components improve the effect of UV protection derived from inorganic UV protection components such as hydrophobized fine particle titanium oxide and hydrophobized fine particle zinc oxide. UV protection (specifically SPF value) approach, nothing documented or suggested

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0248] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples at all. Unless otherwise specified, the compounding quantity of each component shows "mass %" ("weight %").

[0249] The carboxylic acid-modified silicone (compound 1) which is the component (A) of this invention was synthesize|combined by the following method.

Synthetic example 1

[0251] Add 230.67 g of trimethylsilyl undecylenate, platinum-1,3-divinyl-1,1,3,3-tetramethyl to a flask equipped with a stirrer, a reflux cooler, a dropping funnel, and a thermometer 0.042 g of the base disiloxane complex, and 129.33 g of Si-H siloxane represented by the following general formula were added dropwise while maintaining the range of 70-80°C.

[0252]

[0253] After completion of the dropwise addition, aging was performed at 110° C. for 2 hours, and the disappearance of the Si—H bond was confirmed by a hydrogen generation method. Low boiling point components were distilled off under reduced pressure. Thereafter, 90 g of deionized water was added, and aging was performed for 4 hours under reflux to perform deprotection. Thereafter, the low boiling point components were removed again under reduced pressure to obtain Compound 1. As a result of the analysis, it was confirmed that it was Compound 1 represented by the following chemical structural formula.

[0254...

Embodiment 1～12 and comparative example 1

[0256] Using each component shown in Tables 1-3, the composition of Examples 1-12 and the comparative example 1 were manufactured by the following manufacturing method. The compounding quantity of each component in Table 1 shows "mass %" ("weight %") unless otherwise indicated.

[0257] (Production method)

[0258] (1) Mix the ingredients of Phase A.

[0259] (2) Mix the ingredients of Phase B.

[0260] (3) Mix the ingredients of Phase C.

[0261] (4) At normal temperature, the mixture of the components of the A phase was added a little at a time to the mixture of the components of the B phase to prepare an emulsion.

[0262] (4) The ingredients of phase C are mixed in the above-mentioned emulsion.

[0263] (5) The ingredients of phase D are mixed with the above-mentioned emulsion to prepare a cosmetic.

[0264] [Table 1]

[0265]

[0266]

[0267] [Table 2]

[0268]

[0269]

[0270] [table 3]

[0271]

[0272] Note 1: Carboxylic acid modified silicone ...

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PUM

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Abstract

Provided is an oil-in-water type emulsified cosmetic which has a high ultraviolet-proof effect (in particular, an effect of improving the SPF value), does not impair the feeling of touch and feeling of use specific to the oil-in-water type emulsified cosmetic as much as possible, and has excellent water resistance and the like of a film (cosmetic film). The present invention is the oil-in-water emulsion cosmetic comprising (A) a carboxylic acid-modified silicone that is liquid at 50 DEG C, (B) a vinyl polymer emulsion, (C) a basic compound, and (D) an inorganic anti-ultraviolet agent comprising a hydrophobic particulate metal oxide. Particularly, the sunscreen cosmetic is used as a sunscreen cosmetic.

Description

technical field [0001] The present invention relates to an oil-in-water emulsified cosmetic which is composed of a continuous water phase and a discontinuous oil phase and achieves a high ultraviolet protection effect. Background technique [0002] Contains oil-in-water emulsified cosmetics with a water phase as the continuous phase, giving them a moist and refreshing feeling, so they are widely used as base cosmetics such as emulsions, base cosmetics, sunscreens, foundations, eye shadows, and other cosmetics (make up) cosmetics. In particular, oil-in-water emulsified cosmetics containing inorganic UV protection agents represented by hydrophobized microparticle titanium oxide and hydrophobized microparticle zinc oxide can be designed as products that block UV-B waves (wavelength 280 to 315nm) in ultraviolet rays. Cosmetics having a high SPF (=Sun Protection Factor: sun protection factor) value, which is an index of the degree of effect, are widely used as sunscreen cosmetic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/891A61K8/06A61K8/19A61K8/27A61K8/29A61K8/41A61K8/81A61Q17/04
CPCA61K8/41A61Q17/04A61K8/29A61K8/891A61K8/8152A61K8/345A61K8/062A61K8/895A61K8/0241A61K2800/612A61K2800/651A61K8/27A61K8/8147A61K8/892
Inventor 神崎康枝潘松泰安宮野淳堀诚司
Owner DOW TORAY CO LTD
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