JP6241871B2 - Emulsifying powder cosmetic - Google Patents

Description

The present invention relates to an emulsified powder cosmetic that suppresses the time-varying odor of ascorbic acid-2-phosphate.

Conventionally, it is known that ascorbic acid-2-phosphate is a component having a high whitening effect, while it produces a caramel odor over time (see, for example, Patent Documents 1 and 2). Zinc oxide is known as an effective component as an ultraviolet scattering agent (see, for example, Patent Documents 3 and 4).

JP-A-5-331020 JP-A-9-263513 JP-A-2005-232068 JP 2011-236201 A

Ascorbic acid-2-phosphate, particularly ascorbic acid-2-phosphate, has a lot of troubles such as limiting the blending amount and examining masking with a fragrance in order to solve the disadvantage of deodorization.

In such a situation, the present inventors have conducted extensive research to solve the above problems, and as a result, found that a small amount of zinc oxide in the emulsified powder cosmetic can reduce the odor of ascorbic acid-2-phosphate, The present invention has been completed.

That is, this invention is an emulsified powder cosmetic characterized by containing the following components (A) and (B).
(A) Ascorbic acid-2-phosphate represented by Chemical formula 1
(B) 0.01% by mass to 1% by mass of zinc oxide

The present invention provides an emulsified powder cosmetic that can reduce the odor even when it contains ascorbic acid-2-phosphate.

The emulsified powder cosmetic in the present invention refers to a cosmetic that is an emulsified cosmetic and contains powder. A water-in-oil type powder cosmetic is preferred. Specific examples include a cream foundation, a liquid foundation, a base cream, a base essence, a sunscreen agent, and a day cream.

The component (A) used in the present invention is a compound represented by the above chemical formula 1, and X is an alkali metal and / or an alkaline earth metal. Examples of the alkali metal include lithium, sodium, and potassium. Examples of the alkaline earth metal include magnesium and calcium. The number of moles of alkali metal substituted for the ascorbic acid-2-phosphate is preferably 1 mole or more, and most preferably 2 moles or more from the standpoint of stability itself.

Examples of the ascorbic acid-2-phosphate include sodium ascorbyl-2-phosphate, and sodium, potassium, magnesium, and calcium of this substance.

These compounds may be used individually by 1 type, and 2 or more types may be mixed and used for them. In the cosmetic of the present invention, the content of ascorbic acid-2-phosphate is not particularly limited, but it is preferably 0.0001 to 10% by mass, more preferably 0.01 to 1% by mass in the cosmetic. It is good to use so that it may be contained.

The component (B) zinc oxide used in the present invention may be untreated, but it is still better to perform surface treatment. As the surface treatment method, for example, there is a method using one or more of a fluorine compound, a silicone compound, and a metal soap. The compounding quantity of a zinc oxide is 0.01 mass%-1 mass%. Preferably they are 0.01 mass%-0.3 mass%. If it is 0.01% by mass or less, the odor reduction effect may not be achieved.

The particle diameter of zinc oxide is not particularly limited, but fine particle zinc oxide having an average primary particle diameter of preferably 100 nm or less is preferable.

In the present invention, the average primary particle diameter of zinc oxide is determined by measuring the particle size distribution by a laser diffraction / scattering method.

Furthermore, when hydrophobized silica is contained, a foul odor is further suppressed. The hydrophobized silica used in the present invention is one in which silanol groups (hydroxyl groups) on the silica surface, which is silicic anhydride, are treated with dimethylsilicone oil treatment, metal soap treatment, octylsilane treatment, dimethylsilylation, and trimethylsilylation. Preferred is dimethylsilylated silica.

The hydrophobized silica used in the present invention is preferably hydrophobized silica having an average primary particle diameter of 5 to 20 nm. Specifically, fumed silica produced by hydrolysis of silicon tetrachloride in oxyhydrogen octylsilane treated AEROSIL R805, dimethylsilylated AEROSIL R972, AEROSIL R974, AEROSIL R976, AEROSIL R976S, trimethylsilylated AEROSIL R812, AEROSIL R812S (above, Nippon Aerosil Co., Ltd.) etc. are mentioned.

As described above, in the present invention, the average primary particle diameter of the hydrophobized silica is preferably 5 to 20 nm.

The content of hydrophobized silica is preferably 0.1 to 3% by mass. More preferably, it is 0.5-2 mass%.

The cosmetic of the present invention preferably has a pH of 7.5 or higher. Moreover, it is more preferable to adjust pH to 8-9. Examples of the base used for pH adjustment include inorganic bases such as sodium hydroxide, potassium hydroxide and sodium carbonate, and organic bases such as triethanolamine, aminomethylpropanediol, arginine and lysine.

The oil phase used in the present invention includes liquid paraffin, squalane, petrolatum, microcrystalline wax, ceresin, cetyl alcohol, isostearyl alcohol, oleyl alcohol, 2-hexyldecanol, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, Di-2-ethylhexanoic acid neopentyl glycol, dicaprylic acid neopentyl glycol, dicapric acid neopentyl glycol, tri-2-ethylhexanoic acid glycerin, triisostearic acid glycerin, olive oil, macadamia nut oil, sunflower oil, lanolin, lauric acid, myristic acid, Palmitic acid, stearic acid, beeswax, candelilla wax, carnauba wax, linear or cyclic dimethylpolysiloxane, methylphenylpolysiloxa Like oil etc. is. The content of these oils is preferably 1 to 40% by mass.

If the powder used by this invention is a powder normally used for cosmetics, it will not specifically limit. For example, talc, sericite, mica, synthetic mica, silica, barium sulfate, alumina, boron nitride, titanium oxide, iron oxide, zinc oxide and other inorganic powders, nylon, polyurethane, polyethylene, polystyrene, polymethyl methacrylate, silicone powder And organic powders. Moreover, what hydrophobized these, such as a silicone process, a fatty-acid process, and a fluorine process, can also be used. Although the compounding quantity of said powder is not specifically limited, 0.5-20 mass% is preferable with respect to emulsification type powder cosmetics.

The emulsified powder cosmetic of the present invention is a variety of components other than the above components, for example, an ultraviolet absorber, a moisturizer, an aqueous component, a surfactant, an antioxidant, as necessary as long as the effects of the present invention are not impaired. Cosmetic ingredients, preservatives, water-soluble polymers, film forming agents, anti-fading agents, antifoaming agents, fragrances, and the like can be appropriately blended to impart various effects.

The present invention will be described in more detail with reference to the following examples. In addition, these do not limit this invention at all.

(Examples 1 to 8 and Comparative Examples 1 to 3) Water-in-oil type powder cosmetics were produced by the formulations shown in Tables 1 and 2 and the method shown below. About each obtained sample, the time-varying odor was evaluated by sensory evaluation. These results are also shown in Tables 1 and 2.

* 1: NIKKOL DIS (manufactured by Nikko Chemicals)
* 2: Silicone KF-6016 (manufactured by Shin-Etsu Chemical)
* 3: Cisroll DPHS-SO- (AP) (manufactured by Croda)
* 4: SI-UFT-Z (manufactured by Miyoshi Kasei Co., Ltd.)
* 5: SI-UFZO-610 LHM (6%) (manufactured by Miyoshi Kasei Co., Ltd., average primary particle size 20 nm)
* 6: AEROSIL R976 (Nippon Aerosil Co., Ltd.)

(Production method)
Part A and part B were uniformly dispersed to form an oil phase and an aqueous phase. To part A (oil phase), part B (aqueous phase) was gradually added with stirring and emulsified at room temperature. After emulsification, defoaming was performed to obtain a makeup base as shown in Table 1.

* 7: Silicone KF-6019 (manufactured by Shin-Etsu Chemical)

(Production method)
Part A and part B were uniformly dispersed to form an oil phase and an aqueous phase. To part A (oil phase), part B (aqueous phase) was gradually added with stirring and emulsified at room temperature. After emulsification, defoaming was performed to obtain the cream foundation shown in Table 2.

(Evaluation)
The degree of odor change of samples stored at 40 ° C. for 1 month, 3 months, and 50 ° C. for 1 month was compared with that immediately after preparation and evaluated. Regarding the odor change evaluation, a test by one of our perfumers was conducted, and the following absolute evaluation was performed to give 4 grades.
A: No strange odor was observed.
○: Slight odor change was observed.
Δ: Changed odor was observed.
X: Remarkable odor was recognized.

The particle diameter observation was almost unchanged, and ◎ was less than 10%.

In Table 1, when the silicone-treated fine particle zinc oxide is not contained, the odor is accelerated, the odor is considerably suppressed at 0.01% by mass or more, and the odor hardly occurs at 0.1% by mass or more.

In Table 2, deodorization cannot be suppressed when the pH is 7 or less, but reduction is seen at 7.5 or more, and almost no deodorization occurs at 8 or more.

Example 6: Makeup base Ingredient name Compounding amount (mass%)
1. Cyclopentasiloxane 10.00
2. Diphenylsiloxyphenyl trimethicone 5.00
3. Isotridecyl isononanoate 6.00
4). Diisopropyl sebacate (* 1) 5.00
5. Diisostearyl malate 2.00
6). Distemalimonium Hectorite 0.20
7). PEG-9 methyl ether dimethicone (* 2) 1.20
8). Dipolyhydroxystearic acid PEG-30 (* 3) 1.20
9. Ethylhexyl methoxycinnamate 4.00
10. Silicone / stearic acid-treated fine particle titanium oxide (* 8) 5.00
11. Silicone-treated fine particle zinc oxide (* 5) 0.01
12 Silicone-treated yellow iron oxide 0.34
13. Silicone-treated red iron oxide 0.06
14 Silicone-treated black iron oxide 0.005
15. Dimethylsilylated silica (* 6) 0.80
16. Polymethylsilsesquioxane 1.00
17. Purified water remaining 18.1,3-butylene glycol 10.00
19. Pentylene glycol 1.00
20. Xanthan gum 0.30
21. EDTA-4Na 0.05
22. Tripotassium citrate 0.007
23. Ascorbic acid-2-magnesium phosphate 0.01
Total 100.00
* 8: SA-TTO-S-4 (manufactured by Miyoshi Kasei Co., Ltd.)

(Production method)
Components 1 to 16 were uniformly dispersed to obtain an oil phase. Ingredients 17-23 were uniformly dispersed to form an aqueous phase. The aqueous phase was gradually added to the oil phase with stirring and emulsified at room temperature. After emulsification, defoaming was performed to obtain a makeup base.

Example 7: Makeup base Ingredient name Compounding amount (mass%)
1. Cyclopentasiloxane 10.00
2. Diphenylsiloxyphenyl trimethicone 5.00
3. Isotridecyl isononanoate 6.00
4). Diisopropyl sebacate (* 1) 5.00
5. Diisostearyl malate 2.00
6). Distemalimonium Hectorite 0.20
7). PEG-9 dimethicone (* 7) 1.00
8). PEG-9 methyl ether dimethicone (* 2) 1.00
9. Dipolyhydroxystearic acid PEG-30 (* 3) 1.00
10. Ethylhexyl methoxycinnamate 4.00
11. Silicone-treated fine particle titanium oxide (* 9) 5.00
12 Silicone-treated fine particle zinc oxide (* 10) 1.00
13. Silicone-treated yellow iron oxide 0.34
14 Silicone-treated red iron oxide 0.06
15. Silicone-treated black iron oxide 0.005
16. Dimethylsilylated silica (* 11) 2.00
17. Polymethylsilsesquioxane 1.00
18. Purified water remaining 19.1,3-butylene glycol 10.00
20. Pentylene glycol 1.00
21. Xanthan gum 0.30
22. EDTA-4Na 0.05
23. Tripotassium citrate 2.00
24. Ascorbic acid-2-magnesium phosphate 3.00
Total 100.00
* 9: SAS-MT-700B (9%) (manufactured by Miyoshi Kasei)
* 10: MZY-303S (manufactured by Teica, average primary particle size 35 nm)
* 11: AEROSIL R972 (manufactured by Nippon Aerosil Co., Ltd.)

(Production method)
Components 1 to 17 were uniformly dispersed to obtain an oil phase. Ingredients 18-24 were uniformly dispersed to form an aqueous phase. The aqueous phase was gradually added to the oil phase with stirring and emulsified at room temperature. After emulsification, defoaming was performed to obtain a makeup base.

Example 8: Liquid foundation Ingredient name Compounding quantity (mass%)
1. Cyclopentasiloxane 25.00
2. Diphenylsiloxyphenyl trimethicone 2.00
3. Isotridecyl isononanoate 5.00
4). Disteadimonium hectorite 1.00
5. Silicone surfactant (* 12) 5.00
6). Ethylhexyl methoxycinnamate 4.00
7). Silicone / stearic acid-treated fine particle titanium oxide (* 8) 5.00
8). Silicone-treated fine particle zinc oxide (* 5) 1.00
9. Silicone-treated yellow iron oxide 1.68
10. Silicone-treated red iron oxide 0.25
11. Silicone-treated black iron oxide 0.16
12 Dimethylsilylated silica (* 6) 0.20
13. Polymethylsilsesquioxane 1.00
14 Purified water remaining amount 15. Ethanol 8.00
16.1,3-butylene glycol 2.00
17. Pentylene glycol 1.00
18. Xanthan gum 0.10
19. EDTA-4Na 0.05
20. Tripotassium citrate 0.70
21. Ascorbic acid-2-magnesium phosphate 1.00
Total 100.00
* 12: Silicone BY22-008M (Toray Dow Corning Silicone)

(Production method)
Components 1 to 13 were uniformly dispersed to obtain an oil phase. Ingredients 14 to 21 were uniformly dispersed to form an aqueous phase. The aqueous phase was gradually added to the oil phase with stirring and emulsified at room temperature. After emulsification, defoaming was performed to obtain a liquid foundation.

Example 9: Cream foundation Ingredient name Compounding amount (mass%)
1. Cyclopentasiloxane 7.00
2. Diphenylsiloxyphenyl trimethicone 5.00
3. Isotridecyl isononanoate 5.00
4). Distemalimonium Hectorite 0.40
5. PEG-9 dimethicone (* 7) 1.00
6). PEG-9 methyl ether dimethicone (* 2) 1.00
7). Dipolyhydroxystearic acid PEG-30 (* 3) 1.00
8). Ethylhexyl methoxycinnamate 4.00
9. Silicone-treated fine particle titanium oxide (* 9) 5.00
10. Silicone-treated fine particle zinc oxide (* 10) 1.00
11. Silicone-treated yellow iron oxide 1.68
12 Silicone-treated red iron oxide 0.25
13. Silicone-treated black iron oxide 0.16
14 Dimethylsilylated silica (* 11) 1.50
15. Polymethylsilsesquioxane 1.00
16. Purified water remaining amount 17.1,3-butylene glycol 10.00
18. Pentylene glycol 1.00
19. Xanthan gum 0.30
20. EDTA-4Na 0.05
21. Tripotassium citrate 1.00
22. Ascorbic acid-2-magnesium phosphate 1.50
Total 100.00

(Production method)
Components 1 to 15 were uniformly dispersed to obtain an oil phase. Ingredients 16-22 were uniformly dispersed to form an aqueous phase. The aqueous phase was gradually added to the oil phase with stirring and emulsified at room temperature. After emulsification, defoaming was performed to obtain a cream foundation.

Examples 6 to 9 were also emulsified powder cosmetics that sufficiently suppressed the odor of ascorbic acid-2-phosphate over time.

By containing the following components (A) and (B), an emulsified powder cosmetic with reduced odor can be obtained.
(A) 0.01% by mass to 1% by mass of ascorbic acid-2-phosphate (B) zinc oxide represented by the formula 1

Claims (2)

A water- in- oil powder cosmetic comprising the following components (A) to (C) and iron oxide and having a pH of 8 to 9 (however, containing an inorganic salt and / or an inorganic base) Not)
(A) 0.1-1% by mass of ascorbic acid-2-phosphate represented by Chemical formula 1
(B) 0.01-1 mass% of zinc oxide
(C) 0.5-2 mass% of hydrophobic silica (B) water-in-oil type powder cosmetic of claim 1, wherein the content is characterized in that 0.01 to 0.3% by weight.