JP2021100914A - Cosmetic - Google Patents

Abstract

To provide oil-in-water type sunscreen cosmetics providing freshness at the time of application, having no squeaky feeling, and having excellent feeling of use such as skin compatibility, while having good UV protection.SOLUTION: The above problems are solved by an oil-in-water type sunscreen cosmetic containing (A) phenyl-modified silicone, (B) polyether-modified silicone wax, (C) a UV absorber, and (D) a UV scattering agent.SELECTED DRAWING: None

Description

The present invention relates to an oil-in-water sunscreen cosmetic.

In recent years, underwater oil-type sunscreen cosmetics have been increasing due to their good usability. However, when a large amount of UV absorber is added, stickiness occurs. When a large amount of an ultraviolet scattering agent is added, problems of agglutination over time and emulsification separation occur, and since the refractive index is high, there are problems of usability such as whitening of the skin and squeaky feeling at the time of application. (For example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2014-201569 JP-A-2019-94280

Conventionally, various techniques have been proposed to solve this problem, but they have been insufficient. In view of these circumstances, the problem to be solved by the present invention is underwater, which has a good UV protection ability, but also has a freshness at the time of application, does not have a squeaky feeling, and has an excellent usability such as familiarity with the skin. The purpose is to provide oil-type sunscreen cosmetics.

An object of the present invention is to solve the above-mentioned problems. Specifically, it has a good UV protection ability, but also has a freshness when applied, does not have a squeaky feeling, and has a feeling of use such as familiarity with the skin. To provide excellent underwater oil type sunscreen cosmetics.

As a result of diligent studies, the present inventor has found that an oil-in-water emulsified cosmetic that can solve the above problems can be obtained by blending a phenyl-modified silicone, a polyether-modified silicone wax, an ultraviolet absorber, and an ultraviolet scattering agent in combination. The heading, the present invention was completed.

The first invention is
An oil-in-water sunscreen cosmetic containing (A) phenyl-modified silicone (B), a polyether-modified silicone wax, (C) an ultraviolet absorber, and (D) an ultraviolet scattering agent.

The second invention further comprises one or two acrylic polymer compounds selected from (E) (acrylloyldimethyltaurine ammonium / vinylpyrrolidone) copolymer, (hydroxyethyl acrylate / acryloyldimethyltaurine Na) copolymer, and polyacrylamide. The underwater oil-type sunscreen cosmetic according to the first invention including the above.

The third invention is the oil-in-water sunscreen cosmetic according to the first or second invention, wherein the component (A) contains one or two selected from phenyltrimethicone and diphenylsiloxyphenyltrimethicone. ..

The fourth invention is the oil-in-water sunscreen cosmetic according to any one of the first to third inventions, wherein the component (B) contains bisPEG-18 methyl ether dimethylsilane.

The oil-in-water sunscreen cosmetic of the present invention has a good UV protection ability, but also has a freshness when applied, does not have a squeaky feeling, and has an excellent usability such as familiarity with the skin.

The oil-in-water sunscreen cosmetic of the present invention is characterized by containing the components (A) phenyl-modified silicone, (B) polyether-modified silicone wax, (C) ultraviolet absorber, and (D) ultraviolet scattering agent. To do. Hereinafter, the components (A) to (D) of the present invention will be described in detail.

<Component (A) Phenyl-modified silicone>
As the phenyl-modified silicone of the component (A), for example, phenyltrimethicone or diphenylsiloxyphenyltrimethicone can be used. Examples of commercially available phenyltrimethicone products include SH556 Fluid (manufactured by Dow Chemical Japan / Dow Toray Co., Ltd.). Examples of commercially available products of diphenylsiloxyphenyl trimeticone include KF-56A (manufactured by Shin-Etsu Chemical Co., Ltd.). Of these, phenyltrimethicone is preferred. In the present invention, it has been found that the addition of the component (A) reduces the squeaky feeling and improves the familiarity with the skin, but more surprisingly, the addition of the phenyltrimethicone enhances the UV protection ability and the usability. It was. The reason for enhancing the UV protection ability and the feeling of use in the present invention is that a uniform coating film can be formed by making the emulsified particle size small and uniform by phenyltrimethicone having good compatibility with the UV absorber. However, the factors that make phenyltrimethicone essential in the present invention are not limited to this.

The content of the phenyl-modified silicone (A) is preferably 0.1% or more and 10% by mass or less, more preferably 0.5% by mass or more, with respect to the mass of the oil-in-water sunscreen cosmetic. It is 8% by mass or less. If it is 0.1% by mass or more, stickiness due to the ultraviolet absorber and squeak due to the ultraviolet scattering agent are less likely to be felt. Further, when it is 10% by mass or less, the feeling of slipping on the silicone peculiar to silicone does not appear and the usability is good.

<Component (B) Polyether-modified silicone wax>
As the polyether-modified silicone wax of the component (B), for example, bisPEG-18 methyl ether dimethylsilane can be used. Examples of commercially available products of bisPEG-18 methyl ether dimethylsilane include Dow Corning (registered trademark) 2501 Cosmetic Wax (manufactured by Dow Chemical Japan / Dow Toray Co., Ltd.). By blending the component (B) in the present invention, the squeaky feeling is reduced, and the feeling of use such as richness at the time of application and moist feeling at the time of familiarization is excellent. It also contributes to emulsion stability.

The content of the (B) polyether-modified silicone wax is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.5, based on the mass of the oil-in-water sunscreen cosmetic. It is mass% or more and 8 mass% or less. If it is 0.1% by mass or more, the squeaky feeling due to the ultraviolet scattering agent is reduced, and if it is 10% by mass or less, the stickiness derived from the silicone wax does not occur.

<Component (C) UV absorber>
The ultraviolet absorber of the component (C) may be either liquid or solid. By blending the component (C) in the present invention, it is possible to protect the sunburn of the skin and the quality of cosmetics from harmful ultraviolet rays. Liquid organic ultraviolet absorbers include 2-ethylhexyl paramethoxycinnamate, 2-ethoxyethyl paramethoxycinnamate, isopropyl diisopropyl cinnamate ester mixture of paramethoxycinnamate, and methylbis trimethoxycinnamate (trimethyl). Syroxy) Cyril isopentyl, amyl paradimethylamino acid benzoate, 2-ethylhexyl paradimethylamino acid benzoate, ethylene glycol salicylate, 2-ethylhexyl salicylate, benzyl salicylate, homomentyl salicylate, octocrylene, dimethyldiethylbenzalmaronate and the like. Of these, 2-ethylhexyl paramethoxycinnamate, 2-ethylhexyl salicylate, homomentyl salicylate, octocrylene, and dimethyldiethylbenzalmaronate are preferable, and 2-ethylhexyl paramethoxycinnamate, octocrylene, and dimethyldiethylbenzal are more preferable. It is malonate, more preferably 2-ethylhexyl paramethoxycinnamate. The liquid organic ultraviolet absorber may be contained alone or in combination of two or more as appropriate.

Examples of the solid organic ultraviolet absorber include 2- (4-diethylamino-2-hydroxybenzoyl) benzoic acid hexyl ester and 2,4-bis {[4- (2-ethylhexyloxy) -2-hydroxy] phenyl}. -6- (4-Methoxyphenyl) -1,3,5-triazine, 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine, 4-tert- Included are butyl-4'-methoxydibenzoylmethane and 2-ethylhexyl dimethoxybenzidenedioxoimidazolidine propionate. The solid organic ultraviolet absorber may be contained alone or in combination of two or more as appropriate.

Of these, preferably 2- (4-diethylamino-2-hydroxybenzoyl) benzoic acid hexyl ester, 2,4-bis {[4- (2-ethylhexyloxy) -2-hydroxy] phenyl} -6-( 4-methoxyphenyl) -1,3,5-triazine, 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine, and 4-tert-butyl-4 '-Methoxydibenzoylmethane, more preferably 2- (4-diethylamino-2-hydroxybenzoyl) benzoic acid hexyl ester, 2,4-bis {[4- (2-ethylhexyloxy) -2-hydroxy] Phenyl} -6- (4-methoxyphenyl) -1,3,5-triazine, and 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine. .. It is considered that the solid organic ultraviolet absorber in the present invention exists in a liquid state in cosmetics.

Examples of commercially available products of these components include ubinal MC80 (2-ethylhexyl paramethoxysilicate; manufactured by BASF), ubinal Aplus Granular (2- (4-diethylamino-2-hydroxybenzoyl) benzoic acid hexyl ester; BASF). , TINOSORB S (2,4-bis {[4- (2-ethylhexyloxy) -2-hydroxy] phenyl} -6- (4-methoxyphenyl) -1,3,5-triazine; manufactured by BASF ), Ubinal T-150 (2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine; manufactured by BASF), soft shade DH (dimethoxybenzylidendioxoimidazolidine) 2-Ethylhexyl propionate; manufactured by Ajinomoto Co., Ltd.), PARSOL1789 (4-tert-butyl-4'-methoxydibenzoylmethane; manufactured by DSM) and the like can be mentioned.

The content of the ultraviolet absorber (C) is preferably 1% by mass or more and 30% by mass or less, more preferably 5% by mass or more and 20% by mass, based on the mass of the oil-in-water sunscreen cosmetic. It is as follows. If it is 30% by mass or more, stickiness occurs and a good usability cannot be obtained, and if it is 1% by mass or less, a sufficient ultraviolet protection effect cannot be obtained.

<Component (D) UV scatterer>
As the ultraviolet scattering agent of the component (D), it is preferable to use one or two kinds of inorganic powders selected from zinc oxide and titanium oxide from the viewpoint of having a high effect of scattering ultraviolet rays. Further, a dispersion in which the hydrophobized inorganic powder is dispersed in oil may be used. By blending the component (D) in the present invention, there is a protective effect against ultraviolet rays, particularly UVA.

Commercially available products of fine particle zinc oxide powder include, for example, FINEX-25, FINEX-30, FINEX-50 (manufactured by Sakai Chemical Industry Co., Ltd.), MZ500 series, MZ700 series (manufactured by TAYCA Corporation), ZnO-350 (Sumitomo Osaka). Cement Co., Ltd.) and the like. Commercially available products of the fine particle zinc oxide dispersion include DIF-5CS, DIF-TL-3W (manufactured by Sakai Chemical Industry Co., Ltd.), FLZ-01, FLZ-07 (manufactured by TAYCA Corporation), and IOPP60ZIAJ (manufactured by KOBO Dispatec Co., Ltd.). ) Etc. can be mentioned. Examples of commercially available fine particle titanium oxide powder include TTO-55 series, TTO-51 series (manufactured by Ishihara Sangyo Co., Ltd.), JR series, JA series (manufactured by TAYCA CORPORATION) and the like. Examples of commercially available fine particle titanium oxide dispersions include DIS-11A, DIS-TL-10A (manufactured by Sakai Chemical Industry Co., Ltd.), FLT-01, FLT-08 (manufactured by TAYCA CORPORATION), and the like.

The average particle size of the inorganic powder used in the present invention is preferably 0.01 μm or more, more preferably 0.012 μm or more, still more preferably 0.015 μm or more from the viewpoint of preventing powder aggregation. Further, from the viewpoint of preventing opacity of the preparation, 1 μm or less is preferable, 0.5 μm or less is more preferable, and 0.4 μm or less is further preferable. The specific average particle size is preferably 0.01 to 1 μm, more preferably 0.01 to 0.5 μm, and even more preferably 0.01 to 0.4 μm. The average particle size is measured by the laser diffraction / scattering method.

As the shape of the inorganic powder used in the present invention, any shape such as spherical, rod-shaped, needle-shaped, spindle-shaped, plate-shaped, hexagonal plate-shaped, and needle-shaped aggregate can be used.

The hydrophobization treatment for the inorganic powder is not particularly limited, and is limited to methylhydrogensiloxane polysiloxane, dimethylpolysiloxane, copolymer of methylhydrogenpolysiloxane and dimethylpolysiloxane, trimethoxysilyl group and triethoxysilyl group. Such as reactive trialkoxysilyl group-containing dimethylpolysiloxane, reactive group-containing alkyl-modified polysiloxane, dimethylpolysiloxane, alkylsilane, alkyl titanate, metal soap and the like, and known methods for at least one or more compounds. Can be processed with.

The content of the ultraviolet scattering agent (D) is preferably 1% by mass or more and 25% by mass, and more preferably 2% by mass or more and 20% by mass with respect to the mass of the oil-in-water sunscreen cosmetic. .. If it is 25% by mass, the whiteness at the time of application is conspicuous and a squeaky feeling is generated, and if it is 1% by mass or less, a sufficient UV protection effect cannot be obtained.

<Component (E) Acrylic polymer compound>
As the component (E), a commercially available product can be preferably used. For example, as the (acryloyldimethyltaurine ammonium / vinylpyrrolidone) copolymer, ARISTOFLEX AVC (manufactured by Clariant), as the (hydroxyethyl acrylate / acryloyldimethyltaurine Na) copolymer, SEPINOV EMT 10 (manufactured by SEPIC), as polyacrylamide. Examples thereof include SEPIGEL305 (manufactured by SEPIC). By blending the component (E) in the present invention, a fresh feel is imparted.

The content of the acrylic polymer compound (E) is preferably 0.05% by mass or more and 2% by mass or less, more preferably 0.1, with respect to the mass of the oil-in-water sunscreen cosmetic. It is mass% or more and 1 mass% or less. If it is 2% by mass or more, stickiness occurs, and if it is 0.05% by mass or less, the emulsification stability is lowered and the usability is also lowered.

<Other ingredients>
The oil-in-water sunscreen cosmetic of the present invention contains the above-mentioned components as essential constituents, but other components, for example, anionic surfactants, are included in the composition as long as the object of the present invention is not impaired. Activators, amphoteric surfactants, nonionic surfactants, oils, polymer compounds, thickeners, powders (pigments, resins, pigments), preservatives, fragrances, moisturizers, physiologically active ingredients, salts, solvents , Antioxidants, chelating agents, pearlizing agents, neutralizing agents, pH adjusting agents, insect repellents, enzymes and the like can be appropriately blended.

In addition, the oil-in-water sunscreen cosmetic of the present invention may appropriately contain a physiologically active ingredient as long as the object of the present invention is not impaired. A physiologically active substance is a substance that gives some physiological activity to the skin when applied to the skin. For example, an antiaging agent, a tightening agent, an antioxidant, a moisturizer, a blood circulation promoter, an antibacterial agent, a bactericide, and a dry substance. Examples thereof include agents, cold sensation agents, warming agents, vitamins, amino acids, wound healing promoters, irritation relieving agents, painkillers, cell activators, enzyme components and the like.

The type of physiologically active ingredient that can be blended in the skin cosmetics of the present invention is not particularly limited, but it is preferable to use an extract derived from plant roots, stems, leaves, flowers, fruits, and seeds. Examples of extracts derived from plant roots, stems, leaves, flowers, fruits and seeds include, for example, Ashitaba extract, Avocado extract, Amacha extract, Artea extract, Arnica extract, Aloe extract, Itadori extract, Wikyo (fennel) extract, Agetsu. Extract, Omugi extract, Otogirisou extract, Kaki extract, Kakkon extract, Chamomile extract, Carrot extract, Kanzo extract, Kistrawberry extract, Kiwi extract, Cucumber extract, Kyonin extract, Quince seed extract, Brown sugar extract, Rice bran extract, Rice bran fermented extract, Sato maple extract, Satoukibi extract, perilla extract, sardine extract, watermelon extract, sardine extract, sardine extract, sage extract, soybean extract, thyme extract, cha extract, camellia extract, tsubokusa extract, dokudami extract, tomato extract, nobara extract, hamamelis water, Examples thereof include rose extract, parietalia extract, biwa extract, grape extract, hechima extract, button extract, hop extract, mukuroji extract, peach leaf extract, yagurumagiku extract, yokuinin extract, lemon extract, rosemary extract, and Roman chamomile extract.

Hereinafter, the present invention will be specifically described by exemplifying Examples and Comparative Examples, but the present invention is not limited to these Examples. Prior to the examples, the test method and the evaluation method adopted in each example will be described.

・ UV protection (evaluation method)
It was evaluated by the following in vitro SPF measurement.
The coating method is in accordance with ISO24443, and after coating each sample shown in Examples and Comparative Examples on a PMMA plate, the sample dried for 30 minutes is subjected to SPF measurement using an SPF analyzer (UV-2000S manufactured by Labsphere). It was. For each sample, the average value of 9 points was calculated and judged according to the following evaluation criteria.
<Evaluation criteria>
◎: (Average SPF value) = 30 or more
◯: (Average SPF value) = 20 or more and less than 30
Δ: (Average SPF value) = 10 or more and less than 20
×: (Average SPF value) = less than 10

・ Freshness evaluation test at the time of application (evaluation method)
Five specialized panels were evaluated for "freshness at the time of application" when the oil-in-water sunscreen cosmetic of the present invention was applied to the inner part of the forearm and lightly applied with a finger. The test results were judged according to the following evaluation criteria using the number of people who answered that "there is freshness at the time of application".
<Evaluation criteria>
⊚: 4 or 5 panelists admitted to have freshness at the time of application ○: 2 or 3 panelists admitted to have freshness at the time of application △: Admitted to have freshness at the time of application 1 panelist ×: 0 panelists who admitted that there was freshness at the time of application

・ Evaluation test for lack of squeaky feeling when familiar (evaluation method)
Five specialized panels were evaluated for "no squeaky feeling when familiarized" when the oil-in-water sunscreen cosmetic of the present invention was applied to the inner part of the forearm and lightly applied with a finger. The test results were judged according to the following evaluation criteria using the number of people who answered that "there is no squeaky feeling when familiar".
<Evaluation criteria>
◎: 4 or 5 panelists admitted that there is no squeaky feeling at the time of familiarity ○: 2 or 3 panelists who admitted that there is no squeaky feeling at the time of familiarity △: 1 panelist who admitted that there is no squeaky feeling at the time of familiarity Name ×: 0 panelists who admitted that there was no squeaky feeling when familiar

・ Skin familiarity evaluation test (evaluation method)
Five specialized panels were evaluated for "good skin familiarity" one minute after applying the oil-in-water sunscreen cosmetic of the present invention to the inner part of the forearm and lightly blending it with their fingers. The test results were judged according to the following evaluation criteria using the number of people who answered that "there is no stickiness at the time of application and it fits well on the skin". <Evaluation criteria>
⊚: 4 or 5 panelists who were not sticky at the time of application and recognized as having good skin compatibility ○: 2 or 3 panelists who were not sticky at the time of application and were recognized as having good skin compatibility △: At the time of application 1 panelist admitted that it was not sticky and fits well on the skin ×: 0 panelists admitted that it was not sticky when applied and that it fits well on the skin

Details of the components used in Table 1 are shown below.
* 1: Ubinal MC-80: 2-ethylhexyl paramethoxycinnamate (manufactured by BASF)
* 2: Ubinal Plus Granular: 2- (4-diethylamino-2-hydroxybenzoyl) benzoic acid hexyl ester (manufactured by BASF)
* 3: Ubinal T150: 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine (manufactured by BASF)
* 4: TINOSRB S: 2,4-bis {[4- (2-ethylhexyloxy) -2-hydroxy] phenyl} -6- (4-methoxyphenyl) -1,3,5-triazine (manufactured by BASF)
* 5: DIF-TL-3W: Zinc oxide, isotridecyl isononanoate dispersion (manufactured by Sakai Chemical Co., Ltd.)
* 6: IOPP60ZIAJ: Zinc oxide, ethylhexyl palmitate dispersion (manufactured by KOBO Dispatec)
* 7: ARISTOFLEX AVC: (Acryloyldimethyltaurine ammonium / vinylpyrrolidone) copolymer (manufactured by Clariant)

As is clear from Table 1, the oil-in-water sunscreen cosmetics of the examples using the ingredients of the present invention all had excellent performance. On the other hand, in the comparative example lacking any of the essential components, it is inferior in any of the ultraviolet protection ability, the freshness at the time of application, the lack of squeaky feeling at the time of familiarization, and the goodness of familiarity with the skin. Could not be achieved.

Hereinafter, other prescription examples of the skin cosmetics of the present invention will be given. Regarding the oil-in-water sunscreen cosmetics in the following prescription examples, we examined each item regarding the above-mentioned UV protection ability, freshness when applied, no squeaky feeling when familiarized, and good skin compatibility. All of them had excellent characteristics as in the examples and were good.

Formulation Example 1 Oil-in-water sunscreen cosmetics (1) Phenyltrimethicone 3.0% (2) Bis PEG-18 methyl ether dimethylsilane 2.0% (3) Paramethoxycinnamate 2-ethylhexyl 12.0% (4) 2- (4-Diethylamino-2-hydroxybenzoyl) benzoic acid hexyl ester 2.0%
(5) 2,4,6-Tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine 2.0% (6) 2,4-bis {[4- (2-ethylhexyl) Oxy) -2-hydroxy] phenyl} -6- (4-methoxyphenyl) -1,3,5-triazine 2.0%
(7) Silica-coated zinc oxide 16.0% (8) (acryloyldimethyltaurine ammonium / vinylpyrrolidone) copolymer 1.0%
(9) Xanthan gum 0.5% (10) Dipropylene glycol 5.0% (11) Octyldodecyl myristate 5.0% (12) Isononyl isononanoate 1.0% (13) Didimethylpolysiloxane 1.0% ( 14) Hydrogenated lecithin 0.8% (15) Phytosterol 0.08% (16) Tocopherol 0.1% (17) Ethanol 8.0% (18) Hydrolyzed elastin 0.2% (19) Disodium edetate 0.01% (20) Sodium Hyaluronate 1.0%
(21) Residual of purified water

(Manufacturing method) A part of (2), (9), (10), (18) to (20) and (21) was heated to 80 ° C. and uniformly dissolved (Liquid A). (1), (3) to (6), (11) to (16) were heated to 80 ° C. and uniformly dissolved (Liquid B). Solution B was added to solution A and uniformly dispersed with a homomixer, then (7) was added and further dispersed uniformly with a homomixer. The uniform mixture of the rest of (8) and (21) and (17) were added thereto, and the mixture was dispersed again with a homomixer to prepare a sunscreen O / W gel cream.

Claims (4)

An oil-in-water sunscreen cosmetic containing (A) phenyl-modified silicone (B), a polyether-modified silicone wax, (C) an ultraviolet absorber, and (D) an ultraviolet scattering agent. Further, claim 1 contains one or more acrylic polymer compounds selected from (E) (acryloyldimethyltaurinammonium / vinylpyrrolidone) copolymer, (hydroxyethyl acrylate / acryloyldimethyltaurinNa) copolymer, and polyacrylamide. The listed underwater oil-type sunscreen cosmetics. The oil-in-water sunscreen cosmetic according to claim 1 or 2, wherein the component (A) contains one or two selected from phenyltrimethicone and diphenylsiloxyphenyltrimethicone. The oil-in-water sunscreen cosmetic according to any one of claims 1 to 3, wherein the component (B) contains bisPEG-18 methyl ether dimethylsilane.