JP2020094012A - Water-in-oil type emulsion cosmetic - Google Patents

Abstract

To provide a water-in-oil type emulsion cosmetic having good spreadability and adhesiveness when applied to skin or eyelash and eyebrow, a good emulsion state and excellent sense of use.SOLUTION: THere is provided a water-in-oil type emulsion cosmetic, which comprises the following components A to D: (A) a sorbitan fatty acid ester having an HLB of 4 to 7, (B) an organic-modified clay mineral, (C) a powder treated with n-octyltriethoxysilane and (D) a volatile silicone oil and has good spreadability and adhesiveness when applied to skin or eyelash and eyebrow, a good emulsion state and excellent sense of use.SELECTED DRAWING: None

Description

The present invention relates to a cosmetic composition containing a sorbitan fatty acid ester having an HLB of 4 to 7, an organically modified clay mineral, a powder treated with n-octyltriethoxysilane, and a volatile silicone oil, in a good emulsified state. It is possible to provide a water-in-oil emulsified cosmetic composition which has good adhesiveness and spreadability when applied to the skin, eyelashes, and eyebrows, and has an excellent feeling of use without stickiness.

Water-in-oil emulsion cosmetics have an oil phase as the outer phase and an aqueous phase as the inner phase, and are excellent in water repellency and adhesiveness, so they are applied to a wide range of cosmetics such as basic cosmetics, makeup cosmetics, and hair cosmetics. ing.

Eye makeup such as eyelashes and eyebrows has conventionally been a powdery, solid powdery dosage form containing a pigment, and is a type of cosmetic drawn with a tip, pencil, brush, etc., when these are actually used, The problem is that the coating film has low durability and is easily removed by friction, sweat, water, etc. However, the recently developed water-in-oil type emulsion cosmetics for eye makeup have attracted attention as a dosage form that can solve these problems. Furthermore, by adding a spherical powder that has not been hydrophobized to the oil phase component, it is attempted to increase the adhesion to the eyelashes and eyebrows, and further to improve usability, using sponges, brushes, etc. Attempts have also been made to directly dye the skin and make pseudo eyebrows. (Patent Documents 1 and 2)

However, when a large amount of spherical powder that has not been hydrophobized is blended, the powder component attaches to the tips of the eyelashes, causing non-uniform agglomeration of the powder. There was also a defect that the characteristics such as glossiness and matte finish were noticeable.

Many common water-in-oil emulsion cosmetics contain a solid or semi-solid oil agent in order to increase the viscosity of the outer phase (oil phase) and obtain a highly stable cosmetic composition. For this reason, there is a drawback that the oiliness, stickiness, and spreadability of the oil agent itself become strong and give an unpleasant feeling. In order to improve such drawbacks, cosmetics containing a relatively large amount of internal phase (aqueous phase) and having a reduced amount of solid or semi-solid oil in the oil phase have been developed. (Patent Documents 3 and 4)

However, emulsified cosmetics containing these compositions also have poor spreadability such that the cosmetics do not spread smoothly to the tips of the hair because the powder aggregates into lumps when applied to the skin or eyelashes and eyebrows. There was a drawback in that the base felt sticky inside, and due to these drawbacks, it did not adhere evenly to the hair and the appearance after application was poor.
Patent No. 5955048 JP 2006-063020 A JP-A-53-21393 Japanese Patent Laid-Open No. 61-129033

The present invention is a water-in-oil emulsion cosmetic, which has a good emulsified state, has good spreadability and adhesiveness when applied to the skin, eyelashes, and eyebrows, and has a good feeling in use. The purpose is to provide an emulsified cosmetic.

As a result of earnest studies, the inventors of the present application have shown that the components (A) to (D) below are contained in a cosmetic composition to give good emulsification and spreadability when applied to the skin, eyelashes or eyebrows. It was found that a water-in-oil type emulsion cosmetic having a state and having an excellent feeling of use without stickiness was obtained, and the present invention was completed. That is, the present invention is a water-in-oil type emulsion cosmetic characterized by containing the following components (A) to (D).
(A) Sorbitan fatty acid ester having HLB of 4 to 7 (B) Organically modified clay mineral (C) Powder treated with n-octyltriethoxysilane (D) Volatile silicone oil

In the present invention, (A) contains sorbitan fatty acid ester having HLB of 4 to 7, (B) organically modified clay mineral, (C) n-octyltriethoxysilane-treated powder, and (D) volatile silicone oil. As a result, it provides a water-in-oil type emulsion cosmetic having a good emulsified state, no stickiness when applied to the skin or eyelashes, and eyebrows, and having a good feeling of spread and adhesiveness. is there.

Hereinafter, the present invention will be described in detail.

Specific examples of the sorbitan fatty acid ester having a component (A) HLB of 4 to 7 used in the present invention include, for example, sorbitan monooleate, sorbitan isostearate, sorbitan sesquiisostearate, and sorbitan sesquioleate. Esters can be mentioned. As commercially available products, NIKKOL SO-10V, NIKKOL SS-10V, NIKKOL SI-15RV, NIKKOL SO-15V (above, manufactured by Nikko Chemicals), Riquemal S-300W, Poem S-60V (above, manufactured by Riken Vitamin Laboratories) ) Etc. Of these, sorbitan sesquiisostearate is particularly preferable. Moreover, these can use 1 type(s) or 2 or more types as needed.

Here, the HLB value of the sorbitan fatty acid ester having an HLB of 4 to 7 as the component (A) is based on an actual measurement value by an emulsification method, and the measurement method is "Handbook-Cosmetics/Pharmaceutical Raw Materials-Revised Edition Nikko Chemicals Co., Ltd." It is the value obtained experimentally by applying the method described in "Company 1977, pp. 854-855".

The component (B) organically modified clay mineral used in the present invention is obtained by treating a clay mineral, which is a kind of colloidal hydrous aluminum silicate having a three-layer structure, with a quaternary ammonium salt type cationic surfactant. It is a thing.

Specifically, for example, natural or synthetic (those in which the OH group in the formula is replaced by fluorine) montmorillonite group such as montmorillonite, saponite, bentonite, and hectorite, and sodium silicic mica, sodium teniolite, or lithium. It is obtained by treating a clay mineral such as synthetic mica known as teniolite with a quaternary ammonium salt type cationic surfactant. Examples of commercially available clay minerals include Veegum K (manufactured by VANDERBILT MINERAL CORP) and Kunipia F (manufactured by Kunimine Industry Co., Ltd.).

The quaternary ammonium salt type cationic surfactant used for organically modifying the clay mineral is represented by the following general formula (1).

In the formula, R1 is an alkyl group having 10 to 22 carbon atoms or a benzyl group, R2 is a methyl group or an alkyl group having 10 to 22 carbon atoms, R3 and R4 are alkyl groups having 1 to 3 carbon atoms or a hydroxyalkyl group, and X is Represents a halogen atom or a methylsulfate residue.

For example, dodecyltrimethylammonium chloride, myristyltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, aralkyltrimethylammonium chloride, behenyltrimethylammonium chloride, myristyldimethylammonium chloride, cetyldimethylammonium chloride, stearyldimethylammonium chloride, aralkyl. Dimethylammonium chloride, behenyldimethylammonium chloride, cetyldiethylammonium chloride, stearyldiethylammonium chloride, aralkyldiethylammonium chloride, behenyldiethylammonium chloride, benzyldimethylmyristylammonium chloride, benzyldimethylcetylammonium chloride, benzyldimethylstearylammonium chloride, benzyldimethyl Examples include behenylammonium chloride, benzylmethylethylcetylammonium chloride, benzylmethylethylstearylammonium chloride, distearyldimethylammonium chloride, dibehenyldihydroxyethylammonium chloride, and the corresponding bromide, and dipalmitylpropylethylammonium methylsulfate. One or more of these are arbitrarily selected and processed.

When the clay mineral is treated with the above quaternary ammonium salt type cationic surfactant, it is also possible to use a nonionic surfactant together.

The organically modified clay mineral used in the present invention is prepared by, for example, dispersing and stirring the above clay mineral and a quaternary ammonium salt type cationic surfactant in a low boiling point solvent such as water, acetone, or a lower alcohol to reduce the amount. Obtained by removing the boiling solvent.

The content of the quaternary ammonium salt type cationic surfactant in the organic modified clay mineral used in the present invention is preferably 60 to 140 milliequivalent with respect to 100 g of the clay mineral.

Representative examples of organically modified clay minerals preferably used in the present invention include disteardimonium hectorite, dimethyl distearyl ammonium hectorite, stearalkonium hectorite, dimethyl distearyl ammonium bentonite, dimethyl alkyl ammonium hectorite. , Benzyl dimethyl stearyl ammonium hectorite, dioctadecyl dimethyl ammonium salt modified montmorillonite, distearyl dimethyl ammonium chloride treated aluminum magnesium silicate, and the like. Examples of commercially available products include Smecton-SAN, Moistonite-WO (all manufactured by Kunimine Industry Co., Ltd.), Benton 38V, and Benton 27V (all manufactured by Elementis Specialties).

The contents of the sorbitan fatty acid ester having the component (A) HLB of 4 to 7 and the component (B) the organically modified clay mineral used in the present invention are not particularly limited and can be appropriately adjusted according to the desired feeling of use. , The total content of the component (A) and the component (B) is 1 to 10% by weight based on the total composition, the adhesiveness to the skin, eyebrows, eyelashes, etc., stability, good spreadability, and It is preferable in terms of non-stickiness. More preferably, it is 3 to 5% by weight.

The weight ratio of the sorbitan fatty acid ester having the component (A) HLB of 4 to 7 and the component (B) the organically modified clay mineral used in the present invention is not particularly limited and can be appropriately adjusted according to the desired feeling of use. The weight ratio of the component (A) to the component (B) is preferably 1:5 to 1:10.

The component (C) n-octyltriethoxysilane-treated powder and the component (D) volatile silicone oil used in the present invention have good adhesion to skin, eyebrows, eyelashes, etc., stability, and good spreadability. And used to obtain non-stickiness.

The component (C) n-octyltriethoxysilane-treated powder used in the present invention is a powder that has been subjected to a hydrophobic treatment with a surface-treating agent, n-octyltriethoxysilane, to improve water repellency and Excellent adhesion is obtained. The amount of the surface treatment agent used is preferably 0.1 to 10% by weight, more preferably 2 to 9% by weight, based on the weight of the powder before treatment. The method of hydrophobizing treatment is not particularly limited, and it can be performed according to a usual method.

The content of the component (C) n-octyltriethoxysilane-treated powder used in the present invention is not particularly limited and can be appropriately adjusted according to the desired feeling of use, but the total content of the component (C) is included. It is preferred that the amount is from 1 to 10% by weight of the total composition. More preferably, it is 3 to 6% by weight.

The component (D) volatile silicone oil used in the present invention is a silicone oil that volatilizes at room temperature (25° C.) and normal pressure (1 atm, that is, 9.8×10 4 Pa). Examples of the volatile silicone oil include linear, cyclic or branched silicone oils. Specifically, for example, a linear silicone oil having a kinematic viscosity of 1.0 to 3.0 centistokes (cs) is used. Some dimethyl polysiloxanes are mentioned. Examples of commercially available products include KF-96L-1cs (kinematic viscosity 1cs) and KF-96A (kinematic viscosity 2cs) (all manufactured by Shin-Etsu Chemical Co., Ltd.). In addition, examples of the cyclic silicone oil include octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. Examples of commercially available products include KF-995 and KF-994 (above, manufactured by Shin-Etsu Chemical Co., Ltd. ) And the like. Furthermore, tristrimethylsiloxysilane and tetrakistrimethylsiloxysilane can be used as the branched silicone oil, and examples of commercially available products include silicone TMF1.5 (manufactured by Shin-Etsu Chemical Co., Ltd.). Among them, cyclic silicone oil is most preferable, and by containing it, the spreadability upon application and the dryness of cosmetics are good and good.

The content of the volatile silicone oil used in the present invention is not particularly limited, but is preferably 20 to 60% by weight, more preferably 30 to 50% by weight, and particularly preferably 35 to 45% by weight. When it is contained in this range, the cosmetics when applied are dried and spread easily when applied, and are not sticky, which is preferable.

In the water-in-oil type emulsion cosmetic of the present invention, in addition to the above-mentioned essential components, various components depending on the purpose of use, such as a silicone-based surfactant, an oil component, and ultraviolet absorption, within a range that does not impair the effects of the invention. An agent, an antiseptic, a moisturizer, a thickener, a colorant, a sequestering agent, an antioxidant, a cosmetic ingredient, a fragrance, a refreshing agent, a pH adjuster and the like can be appropriately contained.

Examples of the water-in-oil emulsion cosmetic of the present invention include emulsions, moisturizing creams, eye creams, beauty essences, massages, packs, hand creams, skin creams such as body creams, cosmetic base cosmetics, and liquids. Makeup cosmetics such as foundation, eyebrow, mascara and the like can be exemplified, and examples of their use include a method of using by hand, a method of impregnating a non-woven fabric and the like, a method of applying with a brush and the like. Above all, when used as a cosmetic for eyebrows such as eyebrow and mascara by a method of applying with a brush, excellent adhesiveness and the like are exhibited.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto. Note that the content is% by weight unless otherwise specified.

(Examples 1 to 19 and Comparative Examples 1 to 6) Mascara for eyebrows The water-in-oil type emulsified cosmetic composition of the present invention will be described using Examples 1 to 19 and Comparative Examples 1 to 6. The water-in-oil type emulsified cosmetic composition of the present invention was prepared and evaluated by the following evaluation methods and evaluation criteria.

(Evaluation of emulsified state)
The emulsified state was evaluated by observing the emulsified particles with an optical microscope and using the following criteria.
⊚: Uniform emulsified particles of less than 1 μm were observed, and the emulsified state was very good.
◯: Uniform emulsified particles of 1 to less than 5 μm are observed, and the emulsified state is good.
Δ: 5 to 10 μm, slightly uneven emulsified particles were observed, and the emulsified state was rather poor.
X: Uneven emulsified particles exceeding 10 μm were observed, and the emulsified state was poor.

(Evaluation of adhesion, smoothness and non-stickiness)
We asked 5 panelists specializing in cosmetics in their 20s to 40s to use the mascara of Examples and Comparative Examples with a brush on their eyebrows, and the "adhesiveness", "spreadiness of smoothness" and "stickiness" when applied. “Noness” was evaluated, and a rating was given according to the following criteria, an average of the ratings was calculated for each mascara, and the rating was determined according to the criteria shown below.
<Evaluation criteria>
[Evaluation] [Score]
Very good: 5
Good: 4
Normal: 3
Somewhat bad: 2
Defective: 1
<Judgment criteria>
[Average score] [Judgment]
4.5 or more: ◎
3.5 or more and less than 4.5: ○
2 or more and less than 3.5: △
Less than 2: ×

According to Examples 1 to 12 and Comparative Examples 1 to 8 shown in Table 1, eyebrow mascara was prepared by the following manufacturing method, and evaluated based on the above-mentioned use test method, evaluation items and evaluation criteria. The evaluation results are also shown in Table 1. The components marked with * in the table are commercial raw materials.

*1 NIKKOL SI-15RV (manufactured by Nikko Chemicals)
*2 NIKKOL SO-30V (manufactured by Nikko Chemicals)
*3 NIKKOL SL-10 (manufactured by Nikko Chemicals)
*4 Benton 38V (manufactured by Elementis Specialties)
*5 Kunipia F (made by Kunimine Industry Co., Ltd.)
*6 OTS-2 TALC JA-46R (manufactured by Daito Kasei Kogyo Co., Ltd.)
*7 Talc DS-63D (manufactured by Toshi Pigment Co., Ltd.)
*8 Talc JA-46R (manufactured by Asada Flour Mills)
*9 Silicone KF-995 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production method)
Component 4 was added to component 9 and dispersed using a homomixer. Then, the components 1 to 3, 5 to 8 and 10 to 13 were added and dispersed. Separately, components 14 to 16 were mixed, then added to the components 1 to 13 described above, and emulsified using a homomixer to obtain eyebrow mascara.

As is apparent from the results of Table 1, when the cosmetics of Examples 1 to 5 are viewed, the total content of the sorbitan fatty acid ester having the component (A) HLB of 4 to 7 and the component (B) the organically modified clay mineral is It was found that the emulsified state was good when it was 1 to 10% by weight in the composition. Also, looking at the cosmetics of Examples 3 and 6 to 8, it was found that the emulsified state was good when the weight ratio of the components (A) and (B) was 1:5 to 1:10.

Looking at the cosmetics of Examples 3 and 9 to 12, the inclusion of the powder treated with the component (C) n-octyltriethoxysilane gave a high evaluation of adhesiveness, smoothness of spread, etc. ) In Comparative Examples 5, 7 and 8 which do not contain the powder component treated with n-octyltriethoxysilane, the adhesiveness and the smoothness of spreadability are low and some of them are inferior in usability to the Examples. It was

According to Examples 13 to 19 and Comparative Examples 9 and 10 shown in Table 2, eyebrow mascara was prepared by the following manufacturing method, and evaluated based on the use test method, evaluation items, and evaluation criteria. The evaluation results are also shown in Table 2. The ingredients marked with * in the table are the following commercially available raw materials.

*10 KF-96L-1.5cs (Shin-Etsu Chemical Co., Ltd.)
*11 Silicone SH200 oil/10CS (Toray Dow Corning)
*12 PERMETHYL99A (manufactured by Nikko Kogyo Co., Ltd.)

(Production method)
Ingredient 2 was added to ingredients 4 to 7 and dispersed using a homomixer. Then, the components 1, 3 and 8 to 11 were added and further dispersed. Separately, components 12 to 14 were mixed, then added to the components 1 to 11 described above, and emulsified using a homomixer to obtain eyebrow mascara.

From the results of Examples 13 to 19, since the component (D) volatile silicone oil is contained, the smoothness and the non-stickiness are highly evaluated, and the component 6, which is a non-volatile silicone oil or a hydrocarbon oil, It was found that Comparative Examples 9 and 10 containing 7 were inferior to the Examples in the evaluation of smoothness of smoothness and non-stickiness.

Other examples of the present invention will be described below.

(Example 20)
Makeup base cosmetics (ingredient) (% by weight)
1. Decamethylcyclopentasiloxane*8 40.0
2. Disteardimonium hectorite *3 3.2
3. Sorbitan sesquiisostearate *1 0.6
4. Trimethylsiloxysilicic acid 5.0
5. Talc (n-octyltriethoxysilane 2% treatment) *5 5.0
6. Dimethylsilylated silica 0.5
7. Iron oxide 0.8
8. 1,3 butylene glycol 6.0
9. Purified water Residual 10. Methylparaben 0.2

(Production method)
Ingredient 2 was added to ingredient 1 and dispersed using a homomixer. Then, the components 3 to 7 were added and further dispersed. Separately, components 8 to 10 were mixed, added to the components 1 to 7 described above, and then emulsified using a homomixer to obtain a cosmetic base cosmetic.

Example 20 was evaluated in the same manner as in the above-described evaluation method, and as a result, a cosmetic base cosmetic composition having excellent emulsified state, smoothness of spreadability, non-stickiness, and excellent adhesiveness was obtained.

According to the present invention, by applying sorbitan fatty acid ester having HLB of 4 to 7, organically modified clay mineral, n-octyltriethoxysilane-treated powder, and volatile silicone oil, it is applied to the skin, eyelashes, and eyebrows. It is possible to develop a water-in-oil type emulsified cosmetic having good spreadability and adhesiveness, a good emulsified state, and an excellent feeling during use.

Claims (6)

The following components (A)-(D);
(A) Sorbitan fatty acid ester having HLB of 4 to 7 (B) Organic modified clay mineral (C) n-octyltriethoxysilane-treated powder (D) Volatile silicone oil in oil Water-based emulsion cosmetics. The oil according to claim 1, wherein the total content of the sorbitan fatty acid ester having the component (A) HLB of 4 to 7 and the component (B) of the organically modified clay mineral is 1 to 10% by weight based on the entire composition. Medium water type emulsion cosmetics. The weight ratio of components (A) and (B) is 1:5 to 1:10, The water-in-oil type emulsion cosmetic composition according to claim 1 or 2, wherein Content of a component (C) is 1-10 weight%, The water-in-oil type emulsion cosmetics of any one of Claims 1-3 characterized by the above-mentioned. Component (D) is a volatile cyclic silicone oil, The water-in-oil type emulsion cosmetics of any one of Claims 1-4 characterized by the above-mentioned. The water-in-oil emulsion cosmetic according to any one of claims 1 to 5, wherein the water-in-oil emulsion cosmetic is an eyebrow cosmetic.