JP5108337B2 - Water-in-oil emulsified cosmetic - Google Patents

Description

  The present invention relates to a water-in-oil type emulsified cosmetic containing Gunjo.

Conventionally, coloring pigments are blended in cosmetics to color the skin. The coloring pigments mainly include natural products such as carmine, organic tar dyes such as red 226, and inorganic pigments such as iron oxide (Patent Document 1). For natural products, stable supply of raw materials and stabilization of quality are difficult, and for organic tar pigments, sensitization to skin has been reported (Patent Document 2). On the other hand, although there is no problem with respect to the stable supply and the safety of materials for inorganic pigments, the types of colors are limited, and it has been difficult to vividly color cosmetics.
From such a background, a compound (Patent Document 3) in which an organic tar pigment is coated with an inorganic powder has been proposed.
Japanese Patent No. 2902843 Japanese Patent No. 2758496 JP 2001-234090 A

  It is an object of the present invention to provide a water-in-oil emulsified cosmetic excellent in stability over time with respect to viscosity discoloration and viscosity change using Gunjo, an inorganic pigment that exhibits a bright color from pink to blue.

The main configuration of the present invention is as follows.
(1) It contains (A) a divalent metal salt, (B) Gunjo surface-treated with silicones, and the divalent metal salt is 0.05 to 2% by weight in the entire cosmetic. Water-in-oil emulsified cosmetics.
(2) (A) a divalent metal salt, (B) a surface treated with silicone, and the divalent metal salt is 0.05 to 2% by weight in the total cosmetic, A water-in-oil emulsified cosmetic characterized by not containing a pigment.
(3) The water-in-oil emulsion makeup according to (1) or (2), wherein the component (A) contains one or more selected from magnesium sulfate, magnesium chloride, and calcium chloride. Fee.
(4) The water-in-oil emulsified cosmetic according to any one of (1) to (3), wherein the chemical formula of Gunjo as the component (B) is Na ₇ Al ₆ Si ₆ O ₂₄ S ₄ .

A water-in-oil emulsified cosmetic having excellent temporal stability with respect to discoloration and viscosity change can be provided by incorporating Gunjo which exhibits a bright pink to blue color despite being an inorganic pigment.
A water-in-oil emulsified cosmetic with a vivid color can be provided without using an organic tar-based pigment that may cause skin sensitization.

Regarding the component (A), the divalent metal salt used in the present invention includes magnesium sulfate, magnesium chloride, magnesium carbonate, calcium sulfate, calcium chloride, calcium carbonate and the like, preferably magnesium sulfate, magnesium chloride and calcium chloride. Magnesium sulfate is particularly preferable.
As for the compounding quantity of the bivalent metal salt of this invention, 0.05-2.00 mass% is preferable. If it is less than 0.05%, the stability is not sufficient, and if it exceeds 2.00% by mass, it may precipitate over time, and the stability effect will not improve much.

About component (B) Gunjo is defined as a cosmetic raw material “complex sodium aluminum silicate silicate, which exhibits various colors depending on the composition”.
Examples of Gunjo used in the present invention include the chemical formula, NaxAl ₆ Si ₆ O ₂₄ S ₄ (x is 6 to 8), and in particular, Gunjo which has the chemical formula, Na ₇ Al ₆ Si ₆ O ₂₄ S ₄ (for example, UNIPURE PINK). LC589: manufactured by Daito Kasei Kogyo Co., Ltd.) is preferable because it exhibits a bright pink color.
Gunjo, which has the chemical formula Na ₆ Al ₆ Si ₆ O ₂₄ S ₄ , includes, for example, ultramarine CB-80: manufactured by Daiichi Kasei Kogyo Co., Ltd., Daiichi Pink DP-3: manufactured by Daiichi Kasei Kogyo Co., Ltd. .
UNIPURE PINK LC589, ultramarine CB-80 and Daiichi Pink DP-3 were measured with a spectrocolorimeter. The results are shown in Table 1.
Here, saturation (C) and redness (A) during saturation were calculated by the following equations.
Saturation (C) = [(a ^* ) ² + (b ^* ) ² ] ^1/2
Redness during saturation (A) = a ^* / C
Gunjo UNIPURE PINK LC589, which has the chemical formula Na ₇ Al ₆ Si ₆ O ₂₄ S ₄ , has a large redness in saturation and supports a bright pink color. In addition, the lightness is high and the color is bright.

  As these Gunjo, it is preferable to use Gunjou surface-treated with silicones. Silicones are not particularly limited as the surface treatment agent, and examples thereof include dimethicone and methicone. The surface treatment method for Gunjo is not particularly limited, and examples thereof include a dry method, a spray dry method, and a wet method. In the dry method, the powder and the treatment agent are mixed in a dry state and then baked. The spray drying method is a method in which a treating agent is dissolved in a solvent, mixed and dispersed with powder, and sprayed into a hot air. The wet method is a method in which a treating agent is dissolved in a solvent, mixed and dispersed with a powder, and dried. The surface-treated Gunjo can be obtained from the above-mentioned companies.

  For the water-in-oil emulsified cosmetic of the present invention, extender pigments, organic powders, pearl agents, inorganic pigments and the like can be used. For example, talc, mica, kaolin, silica, nylon powder, polyethylene powder, styrene powder, silk powder, crystalline cellulose, starch, octenyl succinate corn starch ester aluminum, mica titanium, titanium oxide, iron oxide mica titanium, zinc oxide, etc. It is done.

  In the water-in-oil emulsified cosmetic of the present invention, a polyhydric alcohol can be further used, such as polyethylene glycol, 1,2-pentanediol, 1,3-butylene glycol, propylene glycol, glycerin, diglycerin and the like. Can be illustrated.

Moreover, the oil agent normally used for cosmetics, such as silicone oil, hydrocarbon oil, ester oil, wax, animal and vegetable oil, can be used for the water-in-oil emulsified cosmetic of the present invention. Examples of the silicone oil include dimethicone, cyclic silicone, volatile silicone, polyether-modified silicone, polyglycerin-modified silicone, amino-modified silicone, methylphenyl silicone, trimethylsiloxysilicic acid, silicone gel, and acrylic silicone.
Furthermore, a nonionic surfactant, a cationic surfactant, an anionic surfactant, an amphoteric surfactant, etc. can be used as a surfactant in the water-in-oil emulsion cosmetic of the present invention.

In the water-in-oil cosmetic of the present invention, components that are usually used in cosmetics within a range not impairing the effects of the invention, such as antioxidants, ultraviolet absorbers, moisturizers, fragrances, fragrances, Preservatives, thickeners, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, fungicides, skin activators, other cosmetic ingredients, medicinal ingredients, and the like can be blended.
The present invention provides a cosmetic that exhibits a bright color from pink to blue, which contains Gunjo, which is an inorganic pigment having excellent safety. And this invention mix | blends Gunjo which is safe with respect to skin, and exhibits the vivid color of pink to blue, without using the organic tar type | system | group pigment | dye to which safety | security is a concern, and it is time-dependent about discoloration and a viscosity change. A water-in-oil emulsified cosmetic having excellent stability can be provided.

  Examples of the cosmetic of the present invention include makeup base, liquid eye shadow, cream eye shadow, liquid cheek color, cream cheek color, mascara, liquid eyeliner, lipstick, lip gloss and the like.

A water-in-oil emulsified cosmetic using the present invention was prepared, and a colorimetry test, a viscosity measurement test and an actual use test were conducted.
[Color measurement test]
Immediately after preparing the sample, the color is measured with a spectral color difference meter to obtain an initial value. Measure the color with a spectrocolorimeter after one month has passed since the preparation of the sample under constant temperature storage at 40 ° C. The smaller the color difference (ΔE) between the initial value and the colorimetric value after 1 month, the lower the discoloration. The evaluation criteria for discoloration are shown below.
○: ΔE <1.0 Almost no discoloration Δ: 1.0 ≦ ΔE <2.0 Some discoloration ×: 2.0 ≦ ΔE Clear discoloration

[Viscosity measurement test]
Immediately after preparing the sample, the viscosity is measured with a B-type viscometer to obtain the initial viscosity. Furthermore, the viscosity was measured with a B-type viscometer even after one month had passed from the preparation of the sample under constant temperature storage at 40 ° C., and the viscosity change rate was determined by the following formula.
Viscosity change rate (%) = (viscosity after 1 month−initial viscosity) / initial viscosity × 100
The evaluation criteria for viscosity stability are shown below.
A: Absolute value of viscosity change rate is less than 20%
Viscosity change has almost no effect on the feel of use.
The change in viscosity slightly affects the feel of use. X: The absolute value of the rate of change in viscosity is 50% or more
Viscosity change affects use feeling

[Real use test]
20 female subjects (25 to 40 years old) were allowed to use the water-in-oil emulsified cosmetic immediately after the creation of the present invention, and the water-in-oil emulsified cosmetic that had passed one month under constant temperature storage at 40 ° C. since the creation, The difference in color and the difference in coating feel were comprehensively sensory evaluated and judged according to the following evaluation criteria.
A: Eighteen or more out of 20 people evaluated that there was no difference in usability.
○: Among 20 people, 14 to 17 people evaluated that there was no difference in usability.
Δ: Of 20 people, 10 or more and 13 or less evaluated that there was no difference in usability.
X: Nine or less of 20 people evaluated that there was no difference in usability.

[Examples 1-5, Comparative Examples 1-6, Reference Examples 1-3]
For each component in Table 2, a makeup base was prepared by the following production method, and each test was performed. The results are shown in Table 2.

(Makeup base manufacturing method)
(A): Components 15 to 24 are heated to 80 ° C. and mixed uniformly.
(B): Components 1 to 14 are mixed uniformly.
(C): a is added to b, emulsified and mixed, and cooled to room temperature.
In addition, Table 2 component 8 silicone-treated ultramarine UNIPURE PINK LC589 has a structure of Na ₇ Al ₆ Si ₆ O ₂₄ S ₄ and Table 2 component 9 silicone-treated ultramarine ultramarine blue CB-80 and component 10 silicone-treated. ultramarine of SA-DP3 of ultramarine has the structure of _{Na 6 Al 6 Si 6 O 24} S 4.

In Reference Examples 1 to 3, which do not contain Gunjo, when magnesium sulfate (Reference Example 1) and sodium chloride (Reference Example 2) are added as metal salts, and no metal salt is added (Reference Example 3) Even so, there was almost no discoloration and no noticeable viscosity change.
On the other hand, when Gunjou surface-treated with silicones was blended, clear discoloration occurred when no metal salt was blended (Comparative Example 6), and a marked decrease in viscosity occurred. Both the discoloration and the viscosity decrease occurred in Comparative Example 4 in which sodium chloride was blended as an emulsion stabilizer (Comparative Examples 1 to 3) and potassium chloride was blended, and it was determined that the temporal stability was inferior in the actual use test. . In Comparative Example 5 in which sodium sulfate was blended, the stability over time of the viscosity change was excellent, but the color change was significant.
However, in Examples 1 to 5 in which Gunjou surface-treated with silicones was blended and a divalent metal salt was blended as a metal salt, discoloration hardly occurred. Furthermore, in Examples 1 to 3 in which magnesium sulfate was blended as a metal salt, there was almost no change in viscosity. In Example 4 containing magnesium chloride and Example 5 containing calcium chloride, although there was a slight decrease in viscosity that would affect the feel of use, there was almost no discoloration and excellent stability over time in actual use. It was a thing.

[Example 6, Comparative Examples 7 to 10]
For each component in Table 3, a cream eye shadow was prepared by the following production method, and each test was performed. The results are shown in Table 3.

(Cream eye shadow manufacturing method)
(A): Components 4 to 9 are heated to 80 ° C. and mixed uniformly.
(B): Components 1 to 3 and components 11 to 16 are added to a and mixed.
(C): Components 17 to 21 are heated to 80 ° C. and mixed uniformly, then added to b, emulsified and mixed, and cooled to room temperature.
In addition, UNIPURE PINK LC589 used for the silicone-treated gun in Table 3 component 12 and the untreated gun in Table 3 component 13 has a structure of Na ₇ Al ₆ Si ₆ O ₂₄ S ₄ .

  In Example 6 in which Gunjou surface-treated with silicones and magnesium sulfate as an emulsion stabilizer were blended, neither discoloration nor viscosity change occurred, but when Gunjou which had not been surface-treated was blended, magnesium sulfate was used as the metal salt. Even when (Comparative Example 7) or sodium chloride (Comparative Example 9) was blended, noticeable discoloration and viscosity reduction occurred. Even in Comparative Example 8 in which Gunjou surface-treated with silicones and sodium chloride were blended, and Gunjyo surface-treated with silicones, and Comparative Example 10 in which no metal salt was blended, significant discoloration and viscosity reduction occurred. .

Formulation Example 1 Makeup Base

1. Cyclomethicone 10
2. Dimethicone 30
3. Polyether-modified silicone 6
4). Polyglyceryl triisostearate-2 1
5. Silicone-treated titanium oxide 7
6). Silicone-treated iron oxide 0.5
7). Silicone-treated zinc oxide 1
8). Silicone treatment ultramarine 2
9. Dextrin palmitate 0.5
Ten. Polymethyl methacrylate 4
11． Silica 2
12.1,3-Butylene glycol 5
13. Magnesium sulfate 2
14. Water residue

Ingredients 12-14 are mixed uniformly at 80 ° C. (referred to as a). 1 to 11 are uniformly mixed at room temperature (referred to as b). Add a cooled to room temperature to b and emulsify and mix.

Formulation Example 2 Makeup Base Cyclomethicone 0.5
2. Squalane 5
3. Isotridecyl isononanoate 10
4). Polyether-modified silicone 0.5
5. Polyglyceryl triisostearate-2 2
6). Silicone-treated titanium oxide 3
7). Silicone-treated iron oxide 0.2
8). Silicone-treated zinc oxide 0.3
9. Silicone treatment ultramarine 1
Ten. Dextrin palmitate 0.5
11． Polymethyl methacrylate 2
12． Silica 1
13. 1,3-Butylene glycol 5
14. Glycerin 2
15． Magnesium sulfate 0.05
16． Water residue

Ingredients 13 to 16 are uniformly mixed at 80 ° C. (referred to as a). 1-12 are uniformly mixed (normally b) at room temperature. Add a cooled to room temperature to b and emulsify and mix.

Claims (4)

(A) Bivalent metal salt, (B) Gunjou surface-treated with silicones, and the divalent metal salt is 0.05 to 2% by weight in the total cosmetics. Water-type emulsified cosmetic. (A) Bivalent metal salt, (B) Gunjou surface-treated with silicones, the divalent metal salt is 0.05 to 2% by weight of the total cosmetic, and contains organic tar pigment A water-in-oil emulsified cosmetic characterized by having no.   The said (A) component contains 1 type, or 2 or more types chosen from magnesium sulfate, magnesium chloride, and calcium chloride, The water-in-oil type emulsion cosmetics of Claim 1 or 2 characterized by the above-mentioned. (B) the water-in-oil type emulsified cosmetic according to claim 1, wherein the chemical formulas for the component of ultramarine is _{Na 7 Al 6 Si 6 O 24} S 4.