JP2017137300A - Oil-in-water type emulsion cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-in-water type emulsion cosmetic capable of exhibiting sufficient water resistance while having excellent freshness at the time of use.SOLUTION: There is provided an oil-in-water type emulsion cosmetic which comprises the following components (a) to (d): (a) a particulate metal oxide, the surface of which is coated with a trialkoxyalkylsilane or an alkyl titanate, (b) a polyhydroxystearic acid, (c) a partially crosslinked alkyl-modified and/or phenyl-modified organopolysiloxane polymer and (d) a sodium acrylate/sodium acryloyl dimethyl taurate copolymer.SELECTED DRAWING: None

Description

  The present invention relates to an oil-in-water emulsified cosmetic containing a fine particle metal oxide whose surface is coated with a specific compound. More specifically, the present invention is excellent in water resistance while being an oil-in-water emulsified cosmetic. The present invention relates to an oil-in-water emulsified cosmetic having good feeling and excellent stability over time.

  Conventionally, cosmetics containing various UV protection agents have been marketed for the purpose of UV protection, but in recent years, makeup that has a fresh feeling of use and high UV protection ability, especially assuming daily use. The food market is expanding. Therefore, oil-in-water emulsified cosmetics that are expected to be fresh at the start are frequently used. However, when a metal oxide that is an ultraviolet light scattering agent is contained, a small amount of metal ions are eluted to emulsify. Drop breakage and agglomeration of the ingredients in the cosmetics may impair the stability of the cosmetics over time, or you may be worried about the squeaky sensation peculiar to metal oxides, and the amount of metal oxides is limited. As a result, there is a problem that sufficient UV protection ability cannot be obtained.

  In addition, UV protection cosmetics often used in summer require water resistance so that the cosmetic film does not run off due to water or sweat, and various studies have been made on oil-in-water emulsified cosmetics. (For example, refer to Patent Documents 1 and 2). However, there are cases in which the polymer used as a means for solving the water resistance is worried about stickiness during use, or there is a concern that a firm finish feeling of the finish or a special cleansing fee is required.

JP-A-7-267817 JP 2008-150299 A

  Accordingly, an object of the present invention is to provide an oil-in-water emulsified cosmetic that is excellent in stability with time, has a good feeling of use, and is excellent in water resistance while containing a fine particle metal oxide.

  In view of such circumstances, the present inventor has conducted intensive research. As a result, the particulate metal oxide whose surface is coated with a specific compound is converted into an oil together with a specific partially crosslinked organopolysiloxane polymer and polyhydroxystearic acid. To disperse in a phase and combine with a (sodium acrylate / acryloyldimethyltaurine sodium) copolymer to form an oil-in-water emulsified cosmetic, thereby obtaining a flexible and uniform cosmetic film and solving the above problems As a result, the present invention has been completed.

That is, the present invention comprises the following components (a) to (d);
(A) Fine metal oxide whose surface is coated with trialkoxyalkylsilane or alkyl titanate (b) Polyhydroxystearic acid (c) Partially cross-linked alkyl-modified organopolysiloxane polymer and / or partially cross-linked phenyl-modified organopoly The present invention relates to an oil-in-water emulsified cosmetic containing a siloxane polymer (d) (sodium acrylate / acryloyldimethyltaurine sodium) copolymer.

  The oil-in-water emulsified cosmetic of the present invention has good spread and freshness when used, and since the cosmetic film is flexible and uniform, it has high UV protection and excellent water resistance. . Therefore, it is useful as cosmetics such as sunscreens, makeup cosmetics, and daytime essences especially for the purpose of protecting against ultraviolet rays, and can be used easily in daily life.

Hereinafter, the present invention will be described in detail.
The component (a) used in the present invention is a fine particle metal oxide whose surface is coated with trialkoxyalkylsilane or alkyl titanate, and the fine particle metal oxide scatters, reflects, quenchs ultraviolet light, etc. It is a powder that cuts off. By covering the surface with the compound, the dispersibility of the particulate metal oxide is improved, and elution of metal ions into the cosmetic can be suppressed. Examples of the fine particle metal oxide of component (a) include zinc oxide, titanium oxide, cerium oxide, zirconium oxide, iron oxide and the like, and these can be used singly or in combination of two or more types. Although it may be used, zinc oxide or titanium oxide is preferable from the viewpoint of the feeling of use and finish of the cosmetic. The particle diameter, shape, etc. of the fine particle metal oxide are not particularly limited, but those having an average primary particle diameter in the range of 1 to 100 nm are preferable from the viewpoint of the ultraviolet protection effect. These particle diameters are values measured with a dynamic light scattering measurement instrument.

The trialkoxyalkylsilane used in the component (a) is a compound in which three alkoxy groups and one alkyl group are bonded to a silicon atom, and the alkoxy group reacts with a hydroxyl group on the powder surface, thereby producing a powder. It is a compound that can coat the body surface. Such trialkoxyalkylsilane has the following general formula (1):
CH ₃ (CH ₂ ) _m Si (O (C _n H _{2n + 1} )) ₃ (1)
(M and n are positive integers, respectively, m = 5 to 20, n = 1 to 3). In the trialkoxyalkylsilane, the alkoxy group is preferably methoxy, ethoxy, propoxy or the like having 1 to 3 carbon atoms. In the trialkoxyalkylsilane, the alkyl group is preferably a hexyl group, octyl group, decyl group, octadecyl group or the like, which is an alkyl group having 6 to 18 carbon atoms. Such trialkoxyalkylsilanes include, for example, trimethoxyhexylsilane, trimethoxyoctylsilane, trimethoxydecylsilane, trimethoxyoctadecylsilane, triethoxyhexylsilane, triethoxyoctylsilane, triethoxydecylsilane, triethoxyoctadecylsilane Etc., and one or more of these can be used.

  Among these trialkoxyalkylsilanes, it is preferable that the alkyl group has 8 to 21 carbon atoms because the dispersibility of the component (a) in the oil agent is improved. In the general formula (1), m = 7, n Particularly preferred is triethoxycaprylylsilane where = 2.

Examples of the alkyl titanate used for the component (a) include long-chain carboxylic acid type, pyrophosphoric acid type, phosphorous acid type, amino acid type alkyl titanate, etc. Alkyl titanates having 8 to 24 alkyl groups are preferred, which have the following general formula (2):
^{(R 1 O) -Ti- (OCOR} 2) 3 (2)
(Wherein R ¹ represents an alkyl group having 1 to 4 carbon atoms, R ² represents an alkyl group having 8 to 24 carbon atoms, and these alkyl groups may be linear or branched). A compound can be illustrated. Specifically, the alkyl titanate is, as a long chain carboxylic acid type alkyl titanate, isopropyl triisostearoyl titanate, isopropyl trioctanoyl titanate, isopropyl dimethacrylisostearoyl titanate, isopropyl isostearoyl diacryl titanate, diisostearoyl ethylene. Titanate and the like, and as pyrophosphate type alkyl titanate, tetraisopropylbis (dioctylphosphite) titanate, tetraoctylbis (ditrideciphosphite) titanate, tetra (2,2-diallyloxymethyl-1-butyl) bis ( Ditridecyl phosphite) titanate and the like, and phosphite-type alkyl titanates include isopropyl tri (dioctyl pyrophosphate) titanate. , Bis (dioctyl pyrophosphate) ethylene titanate and the like, as an amino acid alkyl titanate include isopropyl tri (N- amidoethyl-aminoethyl) titanate and the like, can be used more than these one or two.

  Among these alkyl titanates, it is preferable to use isopropyl triisostearoyl titanate because the dispersibility of the component (a) in the oil is very excellent.

  In addition, when the component (a) is further coated with a water-repellent surface treatment agent such as dimethicone or (dimethicone / methicone) copolymer, the oil absorption of the component (a) is reduced, and the component (a) is more contained in the cosmetic. Many can be blended. The (dimethicone / methicone) copolymer is a compound listed in INCI (INTERNATIONAL NOMENCLATURE of COSMETIC INGREDIENTS), and is a copolymer composed of dimethylsiloxane and methylhydrogensiloxane.

  In the present invention, the method for coating the surface of the fine metal oxide with trialkoxyalkylsilane and / or alkyl titanate is not particularly limited, and generally known coating methods are used. Specifically, a dry coating method in which the compound and the fine metal oxide are directly mixed (heated) to coat, a trialkoxyalkyl in a solvent such as ethanol, isopropyl alcohol, n-hexane, methylene chloride, benzene or toluene. A wet coating method in which silane is dissolved or dispersed, particulate metal oxide is added to the solution or dispersion, and after mixing, the solvent is removed by drying, etc., heated, and pulverized, and the compound dissolved or dispersed in the solvent is fluidized Examples include a gas phase coating method in which powder is spray-coated in a layer, a mechanochemical method, and the like. Among these, the wet coating method is preferable.

  The surface coating amount of the component (a) particulate metal oxide is preferably 0.02 to 0.25 parts by weight, more preferably 0.03 to 0.005 parts by weight of the coating compound with respect to 1 part by weight of the particulate metal oxide. 2 parts by mass. Within this range, it is preferable because it is more excellent in lightness of expansion and stability with time is improved.

  The content of the component (a) in the present invention is not particularly limited, but is preferably 2 to 10% by mass (hereinafter simply referred to as “%”), more preferably 3 to 6%, and particularly preferably 4 to 5%. It is. If it is this range, it will be excellent in stability, it has the high ultraviolet-ray defense capability, and it will also be excellent in water resistance.

  The component (b) polyhydroxystearic acid used in the present invention is a polymer of hydroxystearic acid having one hydroxyl group. In the present invention, the hydroxyl group of hydroxystearic acid is preferably at the 12-position. The degree of polymerization is preferably 3 to 12, and more preferably 4 to 8. Component (b) is known as an oil-based dispersant, and in the present invention, it is a component that also contributes to improving the water resistance of the decorative film. Examples of commercially available components (b) include Saracos HS-6C (manufactured by Nisshin Oillio Group).

Although content of the component (b) in this invention is not specifically limited, Preferably it is 0.01 to 0.5%, More preferably, it is 0.05 to 0.2%. If it is this range, the expansion spread and freshness at the time of use will become more favorable, and it will also be excellent in water resistance.
In the oil-in-water emulsified cosmetic of the present invention, the content of the component (b) relative to the content of the component (a) is preferably 0.01 to 0.06. Within this range, a decorative film with better water resistance can be obtained.

The component (c) used in the present invention is a partially crosslinked alkyl-modified organopolysiloxane polymer and / or a partially crosslinked phenyl-modified organopolysiloxane polymer. The partially cross-linked organopolysiloxane polymer is a polymer having a three-dimensional cross-linking structure obtained by cross-linking organopolysiloxane, consisting of RSiO units and RSiO _1.5 units _{. It} may contain ₅ units and / or SiO ₂ units. Component (c) has a structural unit modified with an alkyl group or a phenyl group as part of R of the structural unit.

  Specific examples of the component (c) include a partially crosslinked alkyl-modified polymer such as a partially crosslinked phenyl-modified organopolysiloxane polymer whose INCI name is (dimethicone / phenyldimethicone) crosspolymer, and (vinyldimethicone / lauryldimethicone) crosspolymer. Silicone may be mentioned. Component (c) may be blended singly as a partially crosslinked organopolysiloxane polymer, but it can also be used as a silicone gel composition swollen with an oil. Examples of such commercially available products include KSG. -18 (mixture of partially crosslinked methylphenylpolysiloxane and phenyltrimethicone, solid content 10 to 20%), KSG-43 ((vinyl dimethicone / lauryl dimethicone) crosspolymer and triethylhexanoin, solid content 25 -35%) (all manufactured by Shin-Etsu Chemical Co., Ltd.).

Although content of the component (c) in this invention is not specifically limited, Preferably it is 0.1 to 1.0%, More preferably, it is 0.2 to 0.8%. Within this range, the oil-in-water emulsified cosmetic composition has better stability over time, and a more flexible and water-resistant cosmetic film can be realized, which is preferable.
In the oil-in-water emulsified cosmetic of the present invention, the content of the component (c) with respect to the content of the component (a) is preferably 0.02 to 0.25. Within this range, a decorative film with better water resistance can be obtained.

  Component (d) used in the present invention is a copolymer of sodium acrylate and sodium acryloyldimethyltaurine, which is a compound listed in INCI. Although known as an aqueous thickener having salt resistance, in the present invention, it is a component that also contributes to improving the water resistance of a decorative film. Specific commercial products of component (d) include, for example, SIMULGEL EG (manufactured by SEPPIC) in the form of a dispersion containing a copolymer content of 37.5%. Can be used.

  Although content of the component (d) in this invention is not specifically limited, 0.2 to 1% is preferable. Within this range, the stability over time is good, the feeling is more fresh and the water resistance is better.

  In the oil-in-water emulsified cosmetic of the present invention, components used in ordinary cosmetics can be blended as necessary within a quantitative and qualitative range that does not impair the effects of the present invention. For example, aqueous components, oily components other than components (b) and (c), surfactants, oil-soluble ultraviolet absorbers, water-soluble ultraviolet absorbers, powders other than component (a), and water-soluble components other than component (d) A functional polymer, a moisturizer, an antioxidant, a cosmetic ingredient, an antiseptic, a fragrance, a refreshing agent and the like.

  The aqueous component constitutes the outer water phase of the oil-in-water emulsified cosmetic, and may be any component other than water as long as it is soluble in water. For example, alcohols such as ethyl alcohol and isopropyl alcohol , Glycols such as propylene glycol, 1,3-butylene glycol, dipropylene glycol, polyethylene glycol, glycerols such as glycerin, diglycerin, polyglycerin, aloe vera, witch hazel, hammamels, cucumber, lemon, lavender, rose, etc. Plant extracts and the like. Moreover, as content of a water phase, it is preferable that it is 55 to 80% in all the cosmetics from a use feeling and stability viewpoint.

  As oily components, it constitutes the inner oil phase of oil-in-water emulsified cosmetics, origin of animal oils, vegetable oils, synthetic oils, etc., commonly used in cosmetics, solid oil, semi-solid oil, liquid oil, volatile Regardless of the nature of the oil, etc., hydrocarbons, fats and oils, waxes, hardened oils, ester oils, fatty acids, higher alcohols, silicone oils, fluorinated oils, lanolin derivatives, oily gelling agents And the like. Specifically, hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, polybutene, fats and oils such as owl, olive oil, castor oil, mink oil, macadamian nut oil, waxes such as beeswax and gay wax, jojoba Oil, glyceryl trioctanoate, polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribethenate, triethylhexanoin, cetyl 2-ethylhexanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, pentaerythritol rosinate , Neopentyl glycol dioctanoate, cholesterol fatty acid ester, phytosterol fatty acid ester, triglyceride, di (capryl / capric acid) propylene glycol, dicap Esters such as propylene glycol acid and diisostearyl malate, fatty acids such as stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid and oleic acid, stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, iso Higher alcohols such as stearyl alcohol and behenyl alcohol, dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, trimethylsiloxysilicic acid, high degree of polymerization methylphenylpolysiloxane, methacrylic modified organopolysiloxane, Stearyl-modified organopolysiloxane, oleyl-modified organopolysiloxane, behenyl-modified organopolysiloxane, high polymerization degree dimethylpolysiloxane Silicones such as xanthone, alkoxy-modified organopolysiloxane, fluorine-modified organopolysiloxane, fluorine-based oils such as perfluorodecane, perfluorooctane, perfluoropolyether, lanolin, lanolin acetate, lanolin fatty acid isopropyl, lanolin alcohol, etc. Examples include lanolin derivatives, sucrose fatty acid esters, starch fatty acid esters, aluminum isostearate, and oily gelling agents such as 12-hydroxystearic acid. These can be used alone or in combination of two or more.

  Although it does not specifically limit as surfactant, Nonionic surfactant, anionic surfactant, cationic surfactant, etc. are mentioned. For example, as the nonionic surfactant, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, hydrogenated castor oil, polyoxyethylene sorbitol tetra fatty acid ester, glycerin fatty acid ester, sorbitan fatty acid ester , Polyglycerin fatty acid ester, sucrose fatty acid ester, alkyl polyglucoside, N-alkyldimethylamine oxide polyoxyethylene glyceryl fatty acid ester, polyoxyethylene cholesteryl ether, polyoxyethylene phytosteryl ether, polyoxyethylene alkyl ether, polyoxyethylene Examples include polyoxypropylene alkyl ether and polyoxyethylene alkylphenyl ether. For example, anionic surfactants include sodium salts or triethanolamine salts of fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, polyoxyethylene lauryl ether phosphate, polyoxyethylene cetyl ether phosphate And polyoxyethylene alkyl ether phosphates such as polyoxyethylene oleyl ether phosphate and polyoxyethylene nonylphenyl ether phosphate. Examples of cationic surfactants include stearyl trimethyl ammonium chloride, stearyl trimethyl ammonium bromide, behenyl trimethyl ammonium chloride, behenyl trimethyl ammonium bromide, cetyl trimethyl ammonium chloride, cetyl trimethyl ammonium bromide, distearyl dimethyl ammonium chloride, odor Distearyldimethylammonium chloride, dibehenyldimethylammonium chloride, dibehenyldimethylammonium bromide, dicetyldimethylammonium chloride, dicetyldimethylammonium bromide, stearyldimethylbenzylammonium chloride, dilauryldimethylammonium chloride, dipolyoxyethylene chloride ( 15 mol) Palm oil alkylmethylammonium chloride dipolyoxyethylene (4 mol) lauryl A Le dimethyl ammonium, stearic acid amide propyl trimethyl ammonium chloride, which go up self coil ethyl hydroxyethyl methyl ammonium methylsulfate and the like, these may be used singly or in combination. Among these, nonionic surfactants are preferable from the viewpoint of stability over time and improvement in use feeling, and the content of the surfactant is 0 to 0 in all cosmetics from the viewpoint of use feeling. .5% is preferable.

Although it does not specifically limit as an ultraviolet absorber, The organic ultraviolet absorber normally used for sunscreen cosmetics can be used. Examples of organic ultraviolet absorbers include ethylhexyl paramethoxycinnamate, ethylhexyl salicylate, phenylbenzimidazolesulfonic acid, oxybenzone-3, oxybenzone-4, oxybenzone-5, 2- [4- (diethylamino) -2-hydroxybenzoyl ] Hexyl benzoate, ethyl paraaminobenzoate, benzophenone-1, benzophenone-3, benzophenone-6, benzophenone-9, 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] -1,3 , 5-triazine, dioctylbutamide triazone, 4-tert-butyl-4'-methoxy-dibenzoylmethane, 2,4-bis {[4- (2-ethyl-hexyloxy) -2-hydroxy] -phenyl} -6- (4-methoxyphenyl)- 1,3,5) - triazine and the like, can be used more than those one or two.

  The method for producing the oil-in-water emulsified cosmetic of the present invention is not particularly limited and can be produced by a generally known method. The production equipment may be any dispersion / emulsification equipment such as a general dispersion. . For example, an oil obtained by mixing component (d) and water by dispersion and dispersing the components (a) to (c) and other oils in advance with a three-roll mill with respect to the aqueous component to which viscosity is imparted. An oil-in-water emulsified cosmetic is obtained by adding a system component and emulsifying it.

  The form of the oil-in-water emulsified cosmetic of the present invention is not particularly limited, and examples thereof include liquid, emulsion, cream form, and solid form.

  The oil-in-water emulsified cosmetic of the present invention can be suitably used for a milky lotion, a cosmetic liquid, a pack, a cream, a sunscreen, a cleansing agent, a foundation, a makeup base, an eye shadow, etc., and has an excellent UV protection effect and water resistance. From the viewpoint of properties, sunscreen, daytime emulsion, makeup base, foundation and the like are preferable, and sunscreen cosmetics are particularly preferable.

Hereinafter, the present invention will be described in detail with reference to examples. Note that these do not limit the present invention.
Examples 1-10 and Comparative Examples 1-2: Sunscreen cosmetics Emulsified cosmetics were prepared by the composition shown in Table 1 and the following production method. The obtained sunscreen cosmetics were evaluated for water resistance, freshness during use, and stability over time by the following methods, and the results are shown in Table 1.

(Production method)
A: Components (1) to (3) are uniformly heated and dissolved.
B: Components (10) to (17) are mixed.
C: Components (4) to (9) are dispersed by a three roll mill.
D: C and B are mixed and dispersed uniformly.
E: D was added to A and dispersed and emulsified to obtain an oil-in-water emulsion cosmetic.

(Evaluation method 1: Evaluation of water resistance)
Each sample of Examples 1 to 10 and Comparative Examples 1 and 2 was applied to a PMMA plate (HELPLOLATE HD6 manufactured by Labsphere) at 2 mg / cm ^{2 and then} left for 20 minutes. Then, an SPF analyzer (UV-2000S manufactured by Labsphere) ) Was measured, and the SPF value before water bath was measured. Next, a water bath was performed. The water bath conditions were such that the sample was affixed to the side of a container storing 2 L of water at 35 ° C., and the water in the container was stirred at 300 rpm for 5 minutes using a paddle mixer. After completion of the water bath, after standing still for 20 minutes, the SPF value after water bath was measured using the SPF analyzer. Based on the SPF values before and after the obtained water bath, the water resistance was evaluated and evaluated based on the following (a) evaluation criteria.
(A) Four-level evaluation criteria (Evaluation): (Judgment)
(SPF measured value after bathing) / (SPF measured value before bathing) = 0.9 or more: ◎
(SPF measured value after bathing) / (SPF measured value before bathing) = 0.7 or more: ○
(SPF measured value after bathing) / (SPF measured value before bathing) = 0.4 or more: Δ
(SPF measured value after water bath) / (SPF measured value before water bath) = less than 0.4: ×

(Evaluation method 2: freshness)
Ten professional evaluation panels applied each sample to the forearm, and the freshness at the time of use was evaluated and evaluated based on the following (b) evaluation criteria.
(B) Four-level evaluation criteria (Evaluation): (Judgment)
All 10 people felt fresh: ◎
6-9 people who felt fresh: ○
2-5 people who felt fresh: △
0 to 1 people felt fresh

(Evaluation method 3: stability over time)
Each sample was placed in a glass standard bottle, stored in a thermostatic bath at 50 ° C. for one month, the state after one month was observed, and the determination was made using the following (c) three-stage criteria.
(C) Three-stage criteria (Evaluation): (Judgment)
No change: ◎
Some change in appearance is seen:
Appearance change is seen: ×

  The sunscreen cosmetics of Examples 1 to 10 were sunscreen cosmetics that were excellent in water resistance but fresh at the time of use and excellent in stability over time. In contrast, Comparative Example 1 in which the component (a) was replaced with untreated fine particle zinc oxide was inferior in terms of water resistance and stability over time. The comparative example 2 which does not contain a component (b) was inferior to water resistance especially.

Example 11: Base cosmetic (cream)
(Ingredient) (%)
1. Polyoxyethylene hydrogenated castor oil 0.2
2. 1,3-butylene glycol 12
3. Methylparaben 0.1
4). Purified water 4.8
5. (Sodium acrylate / sodium acryloyldimethyltaurine)
Copolymer dispersion (Note 1) 1.5
6). Purified water residue 7. Ethanol 5
8). Triethoxycaprylylsilane (3%) coated fine particle zinc oxide 6
9. (Vinyl Dimethicone / Lauryl Dimethicone) Cross Polymer 0.5
10. Polyhydroxystearic acid 0.1
11. Ethyl hexyl methoxycinnamate 7.5
12 Dimethicone (6cs) 2.5
13. Decamethylcyclopentasiloxane 6

(Production method)
A: Components (1) to (4) are uniformly dissolved by heating.
B: Components (5) to (7) are mixed.
C: Components (8) to (11) are subjected to dispersion treatment with a three-roll mill.
D: A and B are uniformly dispersed.
E: C was added to components (12) and (13) and dispersed uniformly.
F: E was added to D for emulsification to obtain an oil-in-water emulsified cosmetic.
(result)
The base cosmetic of Example 11 has a content mass ratio (b) / (a) = 0.167 and a content mass ratio (c) / (a) = 0.0833, and it has a fresh feel when applied, It had a uniform film with water resistance.

Example 12: Sunscreen cosmetic (cream)
(Ingredient) (%)
1. Triceteales-4 phosphate 0.05
2. Polyoxyethylene phytosterol 0.2
3. 1,3-butylene glycol 12
4). Methylparaben 0.1
5. Tranexamic acid 2
6). Lactic acid soda 1.5
7). Purified water 4.8
8). (Sodium acrylate / sodium acryloyldimethyltaurine)
Copolymer dispersion (Note 1) 1
9. Purified water residue 10. Ethanol 5
11. Isopropyltriisostearoyl titanate (2%) coated fine particle zinc oxide 4
12 (Vinyl Dimethicone / Lauryl Dimethicone) Cross Polymer 0.5
13. (Dimethicone / Vinylphenyl dimethicone) Cross polymer 0.2
14 Polyhydroxystearic acid 0.1
15. Ethyl hexyl methoxycinnamate 7
16. Diethylaminohydroxybenzoyl hexyl benzoate 1
17. Bisethylhexyloxyphenol methoxyphenyl triazine 0.5
18. Dimethicone (6cs) 2.5
19. Triethylhexanoin 6
20. Cetostearyl alcohol 1.5
21. Behenyl alcohol 0.5

(Production method)
A: The components (1) to (7) are uniformly dissolved by heating.
B: Components (8) to (10) are mixed.
C: Components (11) to (15) are subjected to dispersion treatment with a three-roll mill.
D: The components (16) to (21) are uniformly mixed and dissolved.
E: C is added to D and dispersed uniformly.
F: A and B were mixed and E was added to emulsify to obtain an oil-in-water emulsion cosmetic.
(result)
The sunscreen cosmetics of Example 12 had a contained mass ratio (b) / (a) = 0.025, a contained mass ratio (c) / (a) = 0.175, and had a fresh feel when applied. Thus, a uniform film having sufficient water resistance was obtained.

Example 13: Daytime serum (component) (%)
1. Monooleic acid polyoxyethylene sorbitan (20EO) 0.1
2. 1,3-butylene glycol 12
3. Methylparaben 0.1
4). 4. Purified water balance (Sodium acrylate / sodium acryloyldimethyltaurine)
Copolymer dispersion (Note 1) 1.5
6). Purified water 50
7). Ethanol 10
8). Triethoxycaprylylsilane (3%) coated fine particle zinc oxide 5
9. (Vinyl Dimethicone / Lauryl Dimethicone) Cross Polymer 0.5
10. Polyhydroxystearic acid 0.1
11. Ethylhexyl methoxycinnamate 7.5
12 Dimethicone (6cs) 2.5
13. Cyclomethicone 6

(Production method)
A: Components (1) to (4) are uniformly dissolved by heating.
B: Components (5) to (7) are mixed.
C: Components (8) to (11) are subjected to dispersion treatment with a three-roll mill.
D: C is uniformly dispersed in the components (12) and (13).
E: A and B are uniformly dispersed.
F: D was added to E and dispersed therein to obtain an oil-in-water emulsified cosmetic.
(result)
The daytime beauty essence of Example 13 has a content mass ratio (b) / (a) = 0.02 and a content mass ratio (c) / (a) = 0.1. A uniform film with sufficient water resistance was obtained.

Example 14: Daytime emulsion (component) (%)
1. Monooleic acid polyoxyethylene sorbitan (20EO) 0.1
2. 1,3-butylene glycol 12
3. Methylparaben 0.1
4). 4. Purified water balance (Sodium acrylate / sodium acryloyldimethyltaurine)
Copolymer dispersion (Note 1) 1.5
6). Purified water 50
7). Ethanol 10
8). Triethoxycaprylylsilane (3%) coated fine particle zinc oxide 5
9. (Vinyl Dimethicone / Lauryl Dimethicone) Cross Polymer 0.5
10. Polyhydroxystearic acid 0.1
11. Ethylhexyl methoxycinnamate 7.5
12 Dimethicone (6cs) 2.5
13. Cyclomethicone 6
14 Isododecane 4
15.1,2-hexanediol 0.05
16. Caprylyl glycol 0.05
17. Glyceryl caprylate 0.02

(Production method)
A: Components (1) to (4) are uniformly dissolved by heating.
B: Components (5) to (7) are mixed.
C: Components (8) to (11) are subjected to dispersion treatment with a three-roll mill.
D: C is uniformly dispersed in the components (12) to (14).
E: A and B are uniformly dispersed.
F: D was added to E and dispersed, and (15) to (17) were added to obtain an oil-in-water emulsion cosmetic.
(result)
The daytime cosmetic liquid of Example 14 has a content mass ratio (b) / (a) = 0.02 and a content mass ratio (c) / (a) = 0.1. A uniform film with sufficient water resistance was obtained.

Claims (3)

The following components (a) to (d);
(A) Fine metal oxide whose surface is coated with trialkoxyalkylsilane or alkyl titanate (b) Polyhydroxystearic acid (c) Partially cross-linked alkyl-modified organopolysiloxane polymer and / or partially cross-linked phenyl-modified organopoly An oil-in-water emulsion cosmetic containing a siloxane polymer (d) (sodium acrylate / acryloyldimethyltaurine sodium) copolymer. The oil-in-water emulsified cosmetic according to claim 1, wherein the mass ratio (b) / (a) of the component (b) and the component (a) is 0.01 to 0.06. The oil-in-water emulsified cosmetic according to claim 1 or 2, wherein the mass ratio (c) / (a) of the component (c) and the component (a) is 0.02 to 0.25.