JP2009114098A - Liquid cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid cosmetic having sufficiently satisfiable various conditions (quick-drying property, usability, uniformity and durability) required in a liquid cosmetic used as an eyeliner, especially a brush-pen eyeliner. <P>SOLUTION: The liquid cosmetic contains water, barium sulfate, sodium polyphosphate, a silicone, a polymer resin and a pigment. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a liquid cosmetic.

  The liquid cosmetic is applied to human skin to give some color (including transparency) and is liquid. Hereinafter, the eyeliner will be described as an example, but the present invention is not limited thereto.

  The eyeliner puts a line around the eye to make it clearer or look larger. There are other types of eyeliner other than liquid, such as pencil type and solid powder type, but the liquid is excellent for drawing finely and clearly. Conventionally, the brush pen has been used to make makeup with a brush by guiding liquid cosmetics to the brush tip. Type eyeliner is widely used. A brush pen-type eyeliner is usually filled with a low-viscosity liquid cosmetic in a container called a refill or a cartridge, and the liquid cosmetic is contained in the applicator. It is to be introduced to the brush tip. Further, many applicators have a function of assisting the introduction of the liquid cosmetic material to the brush tip by knocking the opposite side (rear end) of the brush tip. There are two types of liquid eyeliner: film type and non-film type. When removing the eyeliner, there are many film types that can be removed simply by removing the film. In this film type, a pigment, a resin emulsion, and a dispersant are mixed with water. Recently, not only a colorant such as carbon black but also a powder imparting luster called a pearl agent is sometimes blended. Such a thing needs a certain size for reasons such as reflection of light.

However, in the conventional liquid eyeliner, since the specific gravity of the inorganic pigment and the pearl agent is large, it settles with time and becomes non-uniform. 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, the viscosity is increased. However, when the viscosity is increased, the liquid does not flow to the brush, the liquid does not discharge from the brush tip, or the liquid clogs. In addition, when high-viscosity liquid is discharged by pressurization, there is a risk that liquid dripping or jetting may occur during discharge. Furthermore, when the viscosity is increased, it is difficult to adjust the content of the liquid at the tip of the brush, and a certain line is not applied, resulting in poor usability. In order to solve the above problems, a liquid cosmetic in which a polymer resin and a pigment are mixed in a slurry made of water, barium sulfate, and sodium phosphate has been proposed (Patent Document 1).
However, the liquid cosmetic has a relatively low viscosity, little precipitation of the pigment, and good dispersibility. However, the properties required for an eyeliner, particularly a brush pen type eyeliner (quick drying, usability, uniformity, Durability) was not fully satisfied, and there were still points to be improved.

JP 2004-277362 A

  The present invention is a liquid cosmetic that sufficiently satisfies various conditions (quick drying, usability (gloss and familiarity), uniformity and durability) required for a liquid cosmetic used in an eyeliner, particularly a brush pen type eyeliner. The purpose is to provide.

  As a result of intensive studies to solve the above problems, the present inventors have achieved excellent quick drying properties, usability, and uniformity by adding silicone to water, barium sulfate, sodium polyphosphate, polymer resin and pigment. The present inventors have found that a liquid cosmetic material having durability and durability can be obtained, and have further advanced research based on this finding, thereby completing the present invention.

That is, the present invention
[1] A liquid cosmetic comprising water, barium sulfate, sodium polyphosphate, silicone, a polymer resin, and a pigment,
[2] The liquid cosmetic according to [1], wherein the viscosity is 1 to 300 mPa · s,
[3] The liquid cosmetic according to [1] or [2], wherein the polymer resin is an acrylic resin,
[4] The liquid cosmetic according to any one of [1] to [3], wherein the silicone content in the liquid cosmetic is 0.05 to 3% by weight,
[5] The liquid cosmetic according to any one of [1] to [4], which is an eyeliner,
[6] The liquid cosmetic according to [5], which is filled in a brush pen-type cosmetic container, and [7] water, barium sulfate, and sodium polyphosphate are mixed to form a slurry, and silicone is added to the slurry. A method for producing a liquid cosmetic comprising adding a polymer resin, a pigment and water and stirring and mixing;
About.

  The liquid cosmetic of the present invention sufficiently satisfies various conditions (quick drying, usability, uniformity and durability) required for a liquid cosmetic used for an eyeliner, particularly a brush pen type eyeliner.

  The liquid cosmetic of the present invention is characterized by containing water, barium sulfate, sodium polyphosphate, silicone, a polymer resin and a pigment.

  The liquid cosmetic composition of the present invention is prepared by mixing water, barium sulfate and sodium polyphosphate into a slurry, and then adding silicone, polymer resin and pigment, and water as appropriate to the slurry, and adding a known disperser such as a disper, It can be produced by stirring and mixing with a roll mill, a sand mill or the like.

The barium sulfate (BaSO ₄ ) used in the present invention may be commercially available, and need not be special. This barium sulfate exists from a relatively large crystal to a colloidal one, but a very small fine powder is preferable. The size is usually about 0.01 to 10.0 μm, preferably about 0.1 to 1.0 μm. By blending barium sulfate having a refractive index close to that of a polymer resin (for example, acrylic resin), the transparency of the liquid cosmetic during mixing is improved. The compounding amount of barium sulfate is usually about 20 to 80% by weight, preferably about 30 to 70% by weight, based on the total amount of the slurry.

  Examples of the sodium polyphosphate used in the present invention include sodium tripolyphosphate, sodium tetrapolyphosphate, sodium hexametaphosphate, and the like, preferably sodium hexametaphosphate. The blending amount of sodium polyphosphate is usually about 0.1 to 10% by weight, preferably about 0.5 to 8% by weight, based on the total amount of the slurry.

  In the slurry, the mixing ratio of barium sulfate, sodium polyphosphate and water (purified water) is usually about 5-35: 1: about 5-35, preferably about 10-30: 1: about 10-30.

  Examples of the silicone used in the present invention include dimethylpolysiloxane having a low polymerization degree, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, polyether-modified polysiloxane, polyoxyethylene / methylpolysiloxane copolymer, Examples include silicones such as polyoxyalkylene / alkylmethylpolysiloxane / methylpolysiloxane copolymer, alkoxy-modified polysiloxane, etc., and may be commercially available products. Commercially available products are SH3771M, SH3749, SS2801 (above, Toray Dow Corning Co., Ltd.), TSF431, TSF4440 (above, Momentive Performance Materials Japan Co., Ltd.), and emulsion type silicone. BY22-008M (manufactured by Toray Dow Corning Co., Ltd.), KM-905 (manufactured by Shin-Etsu Silicon Co., Ltd.), and the like. The amount of silicone is usually about 0.05 to 3% by weight, preferably about 0.1 to 3% by weight, more preferably about 0.5 to 2% by weight, based on the total amount of the liquid cosmetic.

  Examples of the polymer resin used in the present invention include acrylic resins, polyvinyl alcohol resins, and cellulose resins, and acrylic resins are particularly preferable. As the acrylic resin, a heavy monomer composed of at least one selected from the group consisting of (meth) acrylic acid, (meth) acrylic ester, (meth) acrylamides, and (meth) acrylonitrile is used as a monomer component. Mention may be made of coalescence (homopolymers or copolymers). The monomer component is not particularly limited as long as it is included in the above category and can be obtained commercially. Preferably, (i) acrylic acid, methacrylic acid: (ii) acrylic acid ester or methacrylic acid ester: for example, methyl acrylate, ethyl acrylate, and n-propyl acrylate can be mentioned. These acrylic monomers can be used alone or in admixture of two or more. That is, the acrylic resin used in the present invention may be a homopolymer composed of one of the various monomer components exemplified above or a copolymer composed of any combination of two or more. Preferably, it is a polymer (homopolymer, copolymer) having (meth) acrylic acid or an ester thereof as a monomer unit.

  The form of the polymer resin is not particularly limited, and may be any form such as an aqueous emulsion or dispersion form such as an emulsion or an aqueous polymer dispersion, a powder form such as a re-emulsified powder resin, or a liquid form such as a liquid polymer. Good. An emulsion is preferred. When blended as an emulsion, the emulsion may be obtained by emulsion polymerization of a monomer having a polymerizable unsaturated double bond, or may be obtained by dispersing a previously synthesized resin in an aqueous dispersion medium using a dispersant. In addition, a powder type polymer dispersed in water or the like can be mentioned. Specifically, a polyalkyl acrylate emulsion polymer, an alkyl acrylate copolymer emulsion polymer, an alkyl acrylate / vinyl acetate copolymer Examples thereof include a combined emulsion polymer and an alkyl acrylate / styrene copolymer emulsion polymer. The blending amount of the polymer resin is usually about 0.5 to 40% by weight, preferably about 1 to 35% by weight, based on the total amount of the liquid cosmetic.

  As the pigment used in the present invention, any pigment that can be generally used in cosmetics can be used, and includes pigments such as pearl powder and glass flake powder. The pigments may be used alone or in combination. Specific examples of pigments include Red No. 2, Red No. 102, Red No. 104 (1), Red No. 227, Yellow No. 4, Yellow No. 203, Green No. 204, Green No. 205, Blue No. 1, Red No. 201, Red No. 202, Red No. 218, Red No. 220, Red No. 221, Red No. 226, Yellow No. 201, Blue No. 204, Purple No. 201, etc., and yellow iron oxide, Bengala, Gunjo, Conger, Oxidation Contains inorganic pigments such as chromium, chromium hydroxide, carmine, shikonin, carbon black, or mica titanium composites, mica iron oxide composites, bismuth oxychloride, guanine, titanium oxynitride and / or lower titanium oxide Pearl agents such as mica coated with a titanium compound are preferable, and pearl agents and carbon black are preferable.

  The size of the pigment is usually about 1 to 100 μm, and in the scale-like shape such as glass flakes, the thickness is thin but the size is about several tens of μm. By using barium sulfate having a very small size as described above compared to the pigment size, barium sulfate enters between the pigments, resulting in a very uniform and stable dispersion. The blending amount of the pigment is usually about 0.1 to 50% by weight, preferably about 1 to 40% by weight, based on the total amount of the liquid cosmetic.

  In the liquid cosmetic of the present invention, the blending ratio of barium sulfate, sodium polyphosphate, water (purified water), silicone, polymer resin and pigment is usually about 0.5 to 25: about 0.05 to 2: about. 8-80: 1: about 2-40: about 0.5-20, preferably about 1-20: about 0.1-1.5: about 10-75: 1: about 5-35: about 1-15 It is.

  In addition to the above essential components, as necessary, anti-drying agents, antiseptic / antifungal agents, water-soluble resins for imparting water resistance, and various alkalizing agents as pH adjusters Etc. can be suitably added.

  The viscosity of the liquid cosmetic composition of the present invention means a viscosity measured at a rotation speed of 20 rpm, a temperature of 20 ° C. for 1 minute in accordance with the second method of viscosity measurement method of Quasi-drug raw material standard 2006, and is usually about 1 to 300 mPa · s, preferably about 3 to 80 mPa · s. If it is less than 1 mPa · s, the bleeding at the time of application is large, and if it exceeds 300 mPa · s, the continuation of the liquid at the time of application becomes worse. The viscosity can be measured by a commercially available viscosity measuring device, for example, a TV type viscometer (manufactured by Toki Sangyo Co., Ltd.).

  Hereinafter, the present invention will be described with reference to Examples, Comparative Examples, and Test Examples, but the present invention is not limited thereto. In the following examples and comparative examples, barium sulfate having an average particle size of 1.0 μm was used. For the measurement of the viscosity, a TV type viscometer (trade name: TV type viscometer No. 1 rotor, manufactured by Toki Sangyo Co., Ltd.) was used.

[Examples 1 to 3]
Water, barium sulfate, and sodium hexametaphosphate were mixed well to form a slurry. To this slurry, a polyoxyethylene / methylpolysiloxane copolymer (degree of polymerization: 9 to 12, manufactured by Toshiba Silicone), polyacrylic acid alkyl emulsion polymer (manufactured by NSC Japan), pearl agent (manufactured by Merck) and Carbon black was mixed to produce a liquid cosmetic for eyeliner (pH 6.0). The amount of each component is shown in Table 1 below.

[Comparative example]
A liquid cosmetic for eyeliner (pH 6.0) was produced in the same manner as in Example except that no silicone was added. The amount of each component is shown in Table 1 below.

[Test example]
Using the liquid cosmetics for eyeliner of Examples 1 to 3 and Comparative Example, an evaluation test was performed for quick drying, usability, uniformity and durability. The results are shown in Table 2.

1. Quick-drying Using a sample (liquid cosmetic), a line was drawn on the arm and touched with a cotton swab every 5 seconds. The number of touches with a cotton swab before it was determined to be dry was measured.
(Evaluation criteria)
○: Within 0 to 10 times.
Δ: 10 to 20 times.
X: 20 times or more.

2. Usability Samples (liquid cosmetics) were filled in a brush pen type cosmetic container and used by 10 evaluation panels. The gloss and familiarity when applied to the back of the hand were evaluated based on the following evaluation criteria. .
(Evaluation criteria)
3 points: Excellent.
2 points: Normal.
1 point: Inferior.
(Evaluation criteria)
○: The total score is 20 points or more.
Δ: The total score is 10 points or more and less than 20 points.
X: The total score is less than 10.

3. Uniformity Samples (liquid cosmetics) packed in glass bottles and stored at room temperature for 72 hours were observed for the dispersion state (degree of pigment aggregation) after lightly shaking 20 times, and evaluated in the following three stages. did.
(Evaluation criteria)
○: Aggregates are not observed (uniformity is very good).
(Triangle | delta): The aggregation of a pigment is seen slightly (uniformity is a little bad).
X: Many aggregations of pigments are observed (uniformity is very poor).

4). Durability One line was drawn on a surface-coated plastic board using a sample (liquid cosmetic), waited until it completely dried, then rubbed with a cotton swab and evaluated for durability. Similarly, after waiting until it was completely dried, it was rubbed with a cotton swab soaked in water and evaluated for water resistance. Furthermore, after waiting until it dried completely in the same manner, it was rubbed with a cotton swab soaked with sebum and evaluated for sebum resistance.
(Evaluation criteria)
○: Excellent.
Δ: Normal.
X: Inferior.

  From the above results, it can be confirmed that the addition of silicone is excellent in quick drying, usability (gloss and familiarity), durability (persistence, water resistance and sebum resistance), and the pigment is uniformly dispersed. It was. However, in the comparative example to which no silicone was added, the pigment settled downward (bottom part) to form an agglomerated layer, and even when shaken, it was not uniformly dispersed.

  According to the present invention, it is possible to provide a liquid cosmetic that is free from sedimentation and color separation with time, and is excellent in quick drying, usability (gloss and familiarity), uniformity, and durability.

Claims (5)

  A liquid cosmetic comprising water, barium sulfate, sodium polyphosphate, silicone, a polymer resin, and a pigment.   The liquid cosmetic according to claim 1, having a viscosity of 1 to 300 mPa · s.   The liquid cosmetic according to claim 1 or 2, wherein the polymer resin is an acrylic resin.   The liquid cosmetic according to any one of claims 1 to 3, wherein the content of silicone in the liquid cosmetic is 0.05 to 3% by weight.   It is an eyeliner, The liquid cosmetic in any one of Claims 1-4.