JP2015105259A - Pigment dispersion cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that a base is spread in skin grooves by capillarity, and the phenomenon of a bleeding is observed because conventional pigment dispersion cosmetics with low viscosity have a low viscosity, and to solve the problem that an inorganic pigment and a pearling agent may cause aggregation and sediment and may not be homogeneous over time because of its large specific gravity, and further to solve the problem that conventional techniques are insufficient with respect to the bleeding because the bleeding gets worse when containing a low-grade alcohol in order to improve quick-drying capability, or containing a polyhydric alcohol in order to improve usability.SOLUTION: Provided is a pigment dispersion cosmetic with low viscosity which has an excellent pigment dispersion, does not cause bleeding when applying, does not cause pigment unevenness, and is excellent in usability can be obtained by combining the following component (a)-(d): (a) water; (b) lower alcohol and/or polyhydric alcohol; (c) pigment; (d) polyether-modified silicone with HLB of 10.0 or more, in a pigment dispersion cosmetic with low viscosity whose viscosity at a temperature of 25°C is 300 mPa s or less.

Description

  TECHNICAL FIELD The present invention relates to a pigment-dispersed cosmetic containing water, a lower alcohol and / or a polyhydric alcohol. The low-viscosity pigment-dispersed cosmetic excellent in usability without blurring when applied and without pigment unevenness. It is about.

  A low-viscosity pigment-dispersed cosmetic is a cosmetic that is applied to the skin and imparts some color, and is a relatively low-viscosity dispersed pigment. Specifically, it is a liquid lip, eyeliner, mascara, eyebrow. And makeup cosmetics represented by the above. The relatively low viscosity referred to in the present invention means that when measured at a rotation speed of 30 rpm, a temperature of 25 ° C. for 1 minute using a Brookfield viscometer in accordance with the viscosity measurement method No. 2 of Quasi-drug raw material standard 2006. The viscosity is 300 mPa · s or less.

  Conventionally, low-viscosity pigment-dispersed cosmetics are commonly used as a type for making up with an applicator such as a brush or a brush, and a type using a brush pen type or a brush. Since it has a low viscosity, it can be applied to fine parts and has good elongation.

  However, the conventional low-viscosity pigment-dispersed cosmetics have a low viscosity, so that the base spreads into the skin crevice due to capillary action, and a phenomenon of blurring was observed. In addition, since the specific gravity of inorganic pigments and pearlescent agents is large, they sometimes aggregate and settle over time and become nonuniform. Therefore, it is possible to shake the container at the time of application to make it uniform, but it takes time and is not perfect. In order to solve such problems, powders such as barium sulfate are contained or the viscosity is increased. For example, liquid cosmetics in which a polymer resin and a pigment are mixed in a slurry composed of water, barium sulfate, and sodium phosphate have been proposed (Patent Documents 1 and 2). However, when the powder was contained, bleeding was suppressed, but the elongation was poor and the usability was poor. In addition, when the viscosity is increased, the liquid may not be ejected from the brush tip, may become clogged, or may become uneven when applied. In addition, since low-alcohol content is included to improve quick-drying and polyhydric alcohols are included for the purpose of improving usability, blurring is further deteriorated. There was a point to be done.

JP 2004-277362 A JP 2009-114098 A

  In view of such actual conditions, in low-viscosity pigment-dispersed cosmetics, especially when water, lower alcohols and / or polyhydric alcohols are contained, the pigment dispersion is good, there is no bleeding when applied, and there is no unevenness in the pigment. Development of a low-viscosity pigment-dispersed cosmetic excellent in properties has been desired.

  As a result of repeated examinations in view of the above circumstances, the inventor of the present application contained water, a lower alcohol and / or a polyhydric alcohol in a low-viscosity pigment-dispersed cosmetic having a viscosity at a temperature of 25 ° C. of 300 mPa · s or less. It has been found that by combining (a) to (d), a low-viscosity pigment-dispersed cosmetic having excellent pigment dispersion, no bleeding when applied, and excellent usability without pigment unevenness can be obtained. It was.

That is, the present invention relates to the following components (a) to (d) in a low-viscosity pigment-dispersed cosmetic having a viscosity at a temperature of 25 ° C. of 300 mPa · s or less:
(A) Water (b) Lower alcohol and / or polyhydric alcohol (c) Pigment (d) A low-viscosity pigment-dispersed cosmetic comprising a polyether-modified silicone of HLB 10.0 or higher.

  The low-viscosity pigment-dispersed cosmetic of the present invention has good dispersion of the pigment when it contains water, lower alcohol and / or polyhydric alcohol, no bleeding when applied, and excellent usability without pigment unevenness. Has the effect of being.

Hereinafter, the present invention will be described in detail.
The lower alcohol of the present invention is not particularly limited as long as it is a lower alcohol that can be used for cosmetics contained in order to accelerate the drying time of the low-viscosity pigment-dispersed cosmetic and improve the feeling of use. The effect of the invention is particularly likely to be exhibited by ethanol having a high feeling improving effect.
The polyhydric alcohol is not particularly limited as long as it is a polyhydric alcohol used in cosmetics that are usually blended in order to smoothen the elongation of the low-viscosity pigment-dispersed cosmetic and improve the feeling of use. 1,3-butylene glycol, which smoothens the elongation of the material and has a high effect of improving the feeling of use, is particularly likely to exert the effects of the invention. Lower alcohols and polyhydric alcohols may be used alone or in combination.

  (B) Although the compounding quantity of a lower alcohol and / or a polyhydric alcohol is not specified in particular, 5-60 mass% is preferable in all the components, and 10-50 mass% is more preferable. If the amount is less than 5% by mass, the effect of suppressing bleeding may be difficult to understand, and if it exceeds 60% by mass, the feeling of use of the preparation may be deteriorated.

  (C) The pigment is not particularly limited, but inorganic color pigments such as Bengala, yellow iron oxide, black iron oxide, organic color pigments such as tar dyes, mica titanium, Bengala-coated mica titanium, titanium oxide-coated glass flakes, etc. Pigments generally used in cosmetics such as inorganic particles such as reactive coloring pigments, mica, talc, kaolin, sericite, titanium dioxide, zinc oxide, and the like can be used. (C) In addition to the pigments exemplified above, one or more pigments may be used in combination. Preferred are carbon black, inorganic coloring pigments such as iron oxide, which are noticeable when bleeding occurs, and pigments in which a water-soluble dye such as blue No. 1 aluminum lake is insolubilized with a metal salt or the like.

  (C) Although the compounding quantity of a pigment is not specified in particular, 5-40 mass% is preferable in all the components, and 10-30 mass% is more preferable. If it is less than 5% by mass, the makeup effect may be lowered, and if it exceeds 30% by mass, the feeling of use of the preparation may be deteriorated.

  The (d) polyether-modified silicone used in the present invention is a silicone-based surfactant in which a polyether group, an epoxy polyether group, or a hydroxyl group is substituted as a modifying group on the side chain or / and terminal of the siloxane skeleton. If the siloxane skeleton has a polyether group, an epoxy polyether group, or a hydroxyl group as a modifying group, a modifying group other than those exemplified, such as an amino group or an alkyl group, may be introduced. There are various HLB polyether-modified silicones depending on the balance of siloxane and modifying groups. The (d) polyether-modified silicone used in the present invention is a modified silicone having an HLB of 10.0 or more. Commercially available polyether-modified silicones having an HLB of 10.0 or higher are KF-6018 (HLB: 14.5), KF-6011 (HLB: 14.5), KF-6013 (HLB: 10.0). ) (Manufactured by Shin-Etsu Silicone), SH3771M (manufactured by Dow Corning Toray) and the like. If it is polyether modified silicone with HLB 10.0 or more, you may mix | blend 1 type (s) or 2 or more types in combination.

(D) The amount of the polyether-modified silicone having an HLB of 10.0 or more is not particularly defined, but is preferably 0.5 to 20% by mass, more preferably 1 to 10% by mass in all components. When the amount is less than 0.5% by mass, the effect of suppressing bleeding may be weakened. When the amount exceeds 20% by mass, the effect of the present invention is not increased, which is uneconomical.
The HLB in the present invention is a value determined by the following Griffin method.
HLB = (Chemical formula amount of hydrophilic group portion / molecular weight of surfactant) × 20

  (D) The HLB of the polyether-modified silicone having an HLB of 10.0 or more can be used in the present invention within the range normally used for cosmetics as long as it is 10.0 or more. The HLB of the polyether-modified silicone having an HLB of 10.0 or more used in the present invention is preferably 10.0 to 16.0, more preferably 12.0 to 16.0.

  The low-viscosity pigment-dispersed cosmetic of the present invention has various components other than the above-described components, for example, a film forming agent, a thickener, an ultraviolet absorber, a humectant, and an aqueous solution, as necessary as long as the effects of the present invention are not impaired. Ingredients, surfactants, antioxidants, cosmetic ingredients, preservatives, water-soluble polymers, 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 1-8 and Comparative Examples 1-5) Liquid Eyeliner Liquid eyeliners were prepared by the formulations shown in Tables 1 to 3 and the method shown below. About each obtained sample, the sensory test panel applied each sample in an appropriate amount on the inner side where the eyelashes grew, and the usability and the dispersibility of the pigment were evaluated by sensory evaluation. The results are also shown in Tables 1 to 3.

(Preparation method)
Of the above components, (5) was added to (4) and dissolved by heating, and this was stirred and dissolved with the remaining components. Finally, a liquid eyeliner was obtained using a ball mill.

(Evaluation 1)
Sensory evaluation (1) Smear, (2) For usability, the following absolute evaluation by 10 professional panelists gave 7 grades and scored, and the average value was calculated from the total score of all panel members for each sample, Judgment was made according to the following four criteria.
(Evaluation method)
(1) The state of blurring was visually evaluated and judged by 10 sensory test panels. (2) As for usability, the sensory test panel applies an appropriate amount of each sample to the inner side where the eyelashes grow, and evaluates the following evaluation items, similar to blurring, in an absolute evaluation in 7 stages. Judgment was made according to a four-step criterion from the average score.
(Absolute evaluation)
(Score): (Evaluation)
6: Very good 5: Good 4: Somewhat good 3: Normal 2: Somewhat bad 1: Bad 0: Very bad (Criteria)
(Average score) (Judgment)
Exceeding 5 points: Excellent: ◎
Over 3 points and under 5 points: Excellent: ○
More than 1 point and 3 points or less: Inferior: △
1 point or less: Very inferior: ×

(Evaluation 2)
Dispersibility of pigment (dispersed state)
(Evaluation method)
The dispersibility of the pigment was determined by visual observation of the aggregation and dispersibility of the pigment using an optical microscope (500 times) for each sample.
A: There is no aggregate of 1 μm or more in 5 μL. ○: 1-5 aggregates of 1 μm to 2 μm in 5 μL. Δ: 6-10 aggregates of 1 μm to 2 μm in 5 μL. : There are 11 or more aggregates of 1 μm or more and 2 μm or less in 5 μL

  The liquid eye liners of Example 1 and Comparative Examples 1 to 4 were prepared according to the formulation shown in Table 1, and each sample was absolutely evaluated by 10 specialist panels. As a result, PEG-, which is a polyether-modified silicone of HLB 10.0 or higher, was obtained. In Example 1, which contained 11 methyl ether dimethicone (HLB14.5), bleeding, usability, dispersibility of the pigment, and all items were judged as ◎. The PEG-9 methyl ether dimethicone (HLB4.5) of Comparative Example 1 bleeds, and the evaluation of usability and pigment dispersibility was x. The PEG-60 hydrogenated castor oil (HLB 14.0) of Comparative Example 2 was evaluated as “good” for the usability and dispersibility of the pigment, but “stain” was “poor”. Although the determination of the dispersibility of the pigment of the decaglyceryl monomyristate (HLB14.0) of Comparative Example 3 was “good”, it was blurred and the usability was “poor”. The POE (25) phytostanol (HLB14.5) of Comparative Example 4 bleeds, and the useability and pigment dispersibility were evaluated as x.

  Liquid eye liners of Examples 2 to 5 and Comparative Example 5 were prepared according to the formulations shown in Table 2, and each sample was absolutely evaluated by 10 specialist panels. As a result, PEG-, which is a polyether-modified silicone of HLB 10.0 or higher, was obtained. The content of 11 methyl ether dimethicone (HLB14.5) was changed to 0.50, 1.00, 6.00, and 20.00% by mass. As a result, bleeding and pigment dispersibility were improved as compared with Comparative Example 5 which did not contain PEG-11 methyl ether dimethicone (HLB14.5) which is a polyether-modified silicone having an HLB of 10.0 or more.

  Liquid eye liners of Examples 1, 2 and 6 to 8 were prepared according to the formulation shown in Table 3, and each sample was absolutely evaluated by 10 specialist panels. As a result, the amount of ethanol as a lower alcohol was 5.00. As a result of changing to 15.00 and 50.00% by mass, good results were obtained in terms of bleeding, feeling of use, and dispersibility of the pigment. As a result of changing the blending amount of 1,3-butylene glycol, which is a polyhydric alcohol, to 1.00 and 10.00% by mass, favorable results were obtained in terms of bleeding, feeling of use, and dispersibility of the pigment.

Example 9: Liquid mascara (component) Compounding amount (mass%)
1. Black iron oxide (Tetsuguro) * 6 20.0
2. Alkyl acrylate copolymer emulsion 10.0
3. Polyoxyethylene (degree of polymerization 20) oleyl ether 10.0
4.1,3-Butylene glycol 10.0
5. Phenoxyethanol 0.3
6). Silica 0.2
7). PEG-11 methyl ether dimethicone (HLB14.5) * 1 3.0
8). Purified water remaining amount 9. Fragrance 0.2
* 6: Tetsuguro No. 702 (Daito Kasei Kogyo Co., Ltd.)
(Manufacturing method)
The above components were stirred and dispersed with a homomixer, and further dispersed using a bead mill, to obtain a liquid mascara. (Viscosity: 200 mPa · s (25 ° C.))

(Evaluation)
As a result of absolute evaluation of the liquid mascara of Example 9 by 10 professional panels, the determination of blur was ○, the determination of usability was ○, and the dispersibility of the pigment was good with no aggregate of 1 μm or more in 5 μL. .

Example 10: Brush pen eyeliner (component) Blending amount (% by mass)
1. Alkyl acrylate copolymer emulsion 30.0
2. Propylene glycol 8.0
3. Black iron oxide (Tetsuguro) * 6 10.0
4). PEG-11 methyl ether dimethicone (HLB14.5) * 1 8.0
5. Ethanol 5.0
6). Carboxymethylcellulose Na 2.0
7). Phenoxyethanol 0.5
8). Purified water remaining amount 9. Fragrance 0.2

(Preparation method)
Components (3) and (6) are mixed and dispersed as part of component (8). Next, other components were mixed and then filled into a cartridge to obtain a brush pen eyeliner.

(Evaluation)
As a result of absolute evaluation by 10 professional panelists using the brush pen eyeliner of Example 10, the determination of bleeding was ◎, the determination of usability was ◎, and the dispersibility of the pigment was good with no aggregate of 1 μm or more in 5 μL. there were.

The present invention is a low-viscosity pigment-dispersed cosmetic, particularly when water and lower alcohol and / or polyhydric alcohol are contained, the dispersion of the pigment is good, there is no bleeding when applied, and there is no unevenness in the pigment. An excellent low-viscosity pigment-dispersed cosmetic can be obtained.

Claims (6)

In a low-viscosity pigment-dispersed cosmetic having a viscosity at a temperature of 25 ° C. of 300 mPa · s or less,
The following components (a) to (d):
(A) Water (b) Lower alcohol and / or polyhydric alcohol (c) Pigment
(D) A low-viscosity pigment-dispersed cosmetic comprising a polyether-modified silicone having an HLB of 10.0 or more. In a low-viscosity pigment-dispersed cosmetic having a viscosity at a temperature of 25 ° C. of 300 mPa · s or less,
The content of the following components (b) to (d) is;
(B) Lower alcohol and / or polyhydric alcohol: 5 to 60% by mass
(C) Pigment: 5 to 40% by mass
(D) Polyether-modified silicone having an HLB of 10.0 or more: 0.5 to 20% by mass
The low-viscosity pigment-dispersed cosmetic according to claim 1, wherein 3. The low-viscosity pigment-dispersed cosmetic according to claim 1, wherein the component (d) polyether-modified silicone having an HLB of 10.0 or more has an HLB of 10.0 to 16.0. The low-viscosity pigment-dispersed cosmetic according to any one of claims 1 to 3, wherein the component (c) pigment is one or more of carbon black, iron oxide, and tar dye. The low-viscosity pigment-dispersed cosmetic according to any one of claims 1 to 4, wherein the low-viscosity pigment-dispersed cosmetic having a viscosity at a temperature of 25 ° C of 300 mPa · s or less is an eyeliner cosmetic. The low-viscosity pigment-dispersed cosmetic composition according to any one of claims 1 to 5, wherein the low-viscosity pigment-dispersed cosmetic composition is used by being filled in a brush pen type applicator.