JP6873617B2 - Solid stick cosmetics - Google Patents

Description

The present invention relates to a solid stick-shaped cosmetic, and more specifically, it has a breakage strength that can withstand actual use despite containing a large amount of powder components, is excellent in blur drawing from above the eyebrows, and is applied to the skin. The present invention relates to a solid bar-shaped cosmetic that has a close line and is excellent in stability over time, and in particular, the surface powdering phenomenon does not occur after a lapse of time.

Conventionally, as a solid stick-shaped cosmetic such as eyebrow and eyeliner, waxes and clays such as fats and oils, waxes, fatty acids and hydrocarbons are kneaded as a binder, and a colorant and an extender are kneaded and molded into a stick shape. It is something that can be done.
In recent years, solid rod-shaped cosmetics have been known for the purpose of increasing the amount of powder components such as colorants and constitutional materials as well as the applicability and improving the breaking strength during use.
When it is desired to contain a large amount of powder component as described above, it is common to pack the composition containing the powder component in a dish-shaped container and press it to obtain a solid cosmetic.

For example, 1) 1 to 15 mass of flat pigment is used to provide a solid rod-shaped cosmetic having excellent mechanical strength such as breakage strength, uniformity of coating film and adhesive force, and excellent coatability and stability over time. %, 25 to 50% by mass of the pigment and the extender containing the flat pigment, and 15 to 35% by mass of the wax component, and 50% or more of the flat pigment is a. The solid rod-shaped cosmetics characterized by being parallel to the −b line and the axis of the solid rod-shaped cosmetics (see, for example, Patent Document 1 by the applicant of the present application), 2) excellent adhesion and long-lasting makeup, and staying In order to provide an oil-based solid cosmetic having good stretch smoothness, soft feel (elasticity), and ease of blurring, (A) R ¹ SiO _1.5 units and R ¹ ₃ SiO _0.5 units (formula). Among them, R ¹ represents a substituted or unsubstituted monovalent hydrocarbon group), (B) lauroyl lysine powder, (C) spherical silicone particles having a plurality of protrusions on the surface, (D) partial cross-linking. An oil-based solid cosmetic (see, for example, Patent Document 2) suitable for blusher or eye color, which is characterized by blending a type organopolysiloxane polymer, is known. It is also widely known that 3) a powder cosmetic suitable for a solid eyebrow cosmetic containing a large amount of powder components such as flat silk powder can be obtained by press-filling a resin dish (for example,). See Patent Document 3).

However, in the solid rod-shaped cosmetics of Patent Documents 1 and 2, the balance between the adhesive force of the coating film, the coatability, and the stability over time may be slightly insufficient, and in particular, the eyebrows cannot be colored. There are challenges. There are products that use wax components with a low melting point so that the eyebrows can be colored, but not only do the eyebrows stick to each other, they feel sticky, they are not easy to use, and the core softens at high temperatures. At present, there is a problem in that it is melted or melted, and it is still not sufficient as a solid bar-shaped cosmetic that meets consumer needs. Recently, there have been reports of powder-finished cosmetics containing a volatile solvent, which can be applied to eyebrows and can draw lines, but these cosmetics require an expensive airtight container. Although the powder cosmetics, which are the dish-shaped press-molded products of Patent Document 3, have the characteristic of being able to blur the skin of the eyebrows and on the eyebrows, they cannot draw a clear line and stick. It has drawbacks such as inferior sex.

JP-A-2015-27956 (Claims, Examples, etc.) Japanese Unexamined Patent Publication No. 2012-184206 (Claims, Examples, etc.) Japanese Unexamined Patent Publication No. 2015-71587 (paragraph 0069, Example 13 and the like)

The present invention has been made in view of the above-mentioned problems of the prior art and the current situation, and is intended to solve the problems. The present invention has a breakage strength that can withstand actual use, is excellent in blur drawing from above the eyebrows, and has an adhesive force to the eyebrows. To provide a solid stick-shaped cosmetic that is excellent in aging, draws a line on the skin, is excellent in stability over time, is particularly excellent in stability at high temperature, and does not cause surface dusting after aging. The purpose.

As a result of diligent research in view of the above-mentioned conventional problems and the like, the present inventor has added at least 60 to 90% by mass of a powder component, a fixing resin component, a silicone solvent, and a wax component. They have found that a solid stick-shaped cosmetic having the above-mentioned object can be obtained, and have completed the present invention.

That is, the present invention exists in the following (1) to (3).
(1) A solid rod-shaped cosmetic containing at least 60 to 90% by mass of a powder component, a fixing resin component, a silicone solvent, and a wax component, and the powder component is a pigment and an extender. A solid stick-shaped cosmetic characterized by.
(2) The solid rod-shaped cosmetic according to (1) above, wherein the pigment contains a lipophilic treated flat plate pigment.
(3) The solid rod-shaped cosmetic according to (2) above, wherein the lipophilic-treated flat pigment has an average particle size of 5 to 100 μm.

According to the present invention, it has a breakage strength that can withstand actual use, is excellent in blurring on the eyebrows, has excellent adhesion to the eyebrows, and can draw a line on the skin, and is excellent in stability over time. In particular, a solid stick-shaped cosmetic that is excellent in stability at high temperatures and does not cause surface powdering after a lapse of time is provided.

Hereinafter, embodiments of the present invention will be described in detail.
The solid rod-shaped cosmetic of the present invention is a solid rod-shaped cosmetic containing at least 60 to 90% by mass of a powder component, a fixing resin component, a silicone solvent, and a wax component, and the powder component is a pigment. It is characterized by being a constitutional material.

The pigment used in the present invention can be used without particular limitation as long as it is used for cosmetics such as inorganic pigments and organic pigments, but flat pigments are preferably used in order to obtain a powdery coating feeling as cosmetics. Be done.
Examples of the flat pigment include mica, mica titanium, carmine-coated mica titanium, chromium oxide-coated mica titanium, iron oxide-coated mica titanium, iron oxide / carmine-coated mica titanium, iron oxide / navy blue-coated mica titanium, and blue-coated mica titanium. , Navy blue film mica titanium, Bengala film mica, Bengala film mica titanium, Bengala carmine film mica titanium, Bengala / iron oxide film mica titanium, Bengala / navy blue film mica titanium, Bengala / iron oxide / navy blue film mica titanium, etc. Examples thereof include at least one kind (each alone or a mixture of two or more kinds, the same applies hereinafter) such as a bright pigment coated with a metal or a metal oxide on a glass flake or a lump flake as a base material.
From the viewpoint of uniformity and coatability of the coating film, iron oxide-coated mica titanium, mica titanium, and blue-coated mica titanium are preferable, and iron oxide-coated mica titanium and mica titanium are particularly desirable. More preferably, these flat pigments are lipophilically treated with an oil lipophilic agent or the like. The lipophilic treatment is preferably lipophilic treatment with an oil lipophilic agent such as dimethicone (dimethylpolysiloxane), hydrogen dimethicone, lauroyl lysine, stearic acid, stearic acid modification, amino acid, amino acid modification, and particularly preferably. It is preferable to treat with a silicone-based oil such as dimethicone or hydrogen dimethicone.

Among these flat pigments, it is preferable that the average particle size is 5 to 100 μm, and more preferably 5 to 20 μm. In the present invention (including Examples described later), the "average particle size" is the average particle size as observed by an optical microscope or an electron microscope, and the plate-shaped pigment has a flat plate shape. The average particle size is the particle size in the direction and large diameter.

If the content of these flat pigments is added too much, there is usually a concern that the strength, coating performance, and usability will be reduced. However, by interacting with other compounding ingredients, these performance deteriorations can be overcome. On the contrary, in order to obtain preferable strength, coating performance and use characteristics, it has been found that 10 to 50% by mass (hereinafter, "mass%" is simply referred to as "%") is preferable with respect to the total amount of the solid rod-shaped cosmetics. It was also found that more preferably 15 to 35% is desirable.
When the content of this flat pigment is less than 10%, it is not possible to obtain a product having good applicability of blur drawing from above the eyebrows while ensuring strength that can be actually used, while (line) on the skin. It is desirable that it is 50% or less from the viewpoint of coating performance and usage characteristics.

In the present invention, pigments other than the flat pigment can also be used from the viewpoint of coloring as a cosmetic.
Examples of pigments that can be used include titanium oxide, iron black, carbon black, dark blue, ultramarine, blue No. 1, red iron oxide, chromium oxide, chromium hydroxide, zinc oxide, zirconium oxide, cobalt oxide, and fish scales. At least one of pigments such as foil, bismuth oxychloride, blue 2, blue 404, red 201, red 202, red 220, red 102, red 104, yellow 4, yellow 4 Al lake, etc. Seeds are mentioned. Further, these pigments may also be lipophilic-treated pigments as long as they can be lipophilic-treated.
As will be described later, the range of the content of this pigment (excluding the above-mentioned flat pigment) is adjusted to a suitable amount within the range of the total content of the pigment, the above-mentioned flat pigment and the extender.

The constitutional material used in the solid rod-shaped cosmetics of the present invention is not particularly limited as long as it is used in the conventional solid rod-shaped cosmetics, and any of them can be used. For example, white constitutional materials such as spherical resin particles, boron nitride, kaolin, talc, calcium carbonate, sericite, zinc oxide, hydroxyapatite, and lauroyl lysine, and colored constitutional materials are also used depending on the hue of the stick-shaped cosmetics. Of course, a mixture of these several types can also be used. In particular, preferably, as a constitutional material, spherical resin particles, for example, silicone rubber powder, nylon powder, and a silicone composite powder coated with these particles [(vinyldimethicone / vinylmethicone silsesquioxane) crosspolymer] It is desirable to use at least one of these materials alone or in combination with other constitutional materials. In particular, the average particle size of the spherical resin particles is preferably 5 to 30 μm, more preferably 5 to 20 μm.

The total content of the constitutional material, the flat pigment, and the powder component composed of the pigment is preferably 60 to 90%, preferably 70 to 85%, based on the total amount of the solid rod-shaped cosmetic.
If the total content of the constitutional material, the flat pigment, and the powder component composed of the pigment is less than 60%, a product having good applicationability of the blur line on the eyebrows cannot be obtained, while it exceeds 90%. However, the strength is too weak or too brittle to withstand actual use, which is not preferable.
The content of the constitutional material is preferably 5 to 15% with respect to the total amount of the solid bar-shaped cosmetics.

The fixed resin component used in the present invention exhibits high dispersibility of powder and is used as a film-forming auxiliary, and examples thereof include acrylic silicone and trimethylsiloxysilicic acid. Acrylic silicone is preferably used from the viewpoint of adhesiveness, coatability and the like.
Specific examples of the adhesive resin component that can be used include (Acrylate / behenyl acrylate / dimethicone methacrylate) copolymer, (Acrylate / stearyl acrylate / dimethicone methacrylate) copolymer, and Acrylate / ethylhexyl acrylate / dimethicone methacrylate. ) At least one type of copolymer, trimethylsiloxysilicic acid and the like can be mentioned.

The total content of these fixed resin components is preferably 1 to 15%, more preferably 3 to 10%, based on the total amount of the powder components.
If the total content of the adhesive resin components is less than 1%, a uniform and adhesive coating film cannot be obtained, while if it exceeds 15%, a brittle coating film is drawn.

Examples of the silicone solvent used in the present invention include silicone solvents such as diphenyldimethicone, diphenylsiloxyphenyltrimethicone, aminopropyldimethicone, (stealoxymethicone / dimethicone) copolymer, and simethicone.

The content of these silicone solvents is preferably 1 to 20%, more preferably 1 to 10%, based on the total amount of the solid bar-shaped cosmetics, from the viewpoint of usability and long-lasting makeup.
If the content of this silicone solvent is less than 1%, a good coating property of the blur line on the eyebrows cannot be obtained, while if it exceeds 20%, the strength is too weak or too brittle. It cannot withstand actual use.

The wax component used in the present invention is not particularly limited as long as it is a wax component used in solid rod-shaped cosmetics, and for example, hydrocarbon wax having 26 to 33 carbon atoms, ceresin wax, polyethylene wax, paraffin wax, jojoba. Wax, carnauba wax, synthetic wax, fatty acid triglyceride, sucrose fatty acid ester, bechenic acid, stearic acid, behenyl alcohol, glyceryl tribechenate, dipentaerytrit fatty acid ester, mokuro, vaseline, ethylene glycol monostearate, hydrogenated castor oil, lanolin At least one of the fatty acids octyldodecyl, ethylene glycol monostearate and the like can be mentioned.
Preferably, the above-mentioned hydrocarbon wax and the like are mentioned from the viewpoint of coatability and gloss imparting.

The content of these wax components is preferably 0.5 to 10%, preferably 1 to 5%, based on the total amount of the solid stick cosmetics.
If the content of these wax components is less than 0.5%, it becomes difficult to retain the shape of the solid stick-shaped cosmetic as a core, while if it exceeds 10%, a good feeling of application on the eyebrows cannot be obtained. Not preferred.

Further, it is desirable that the solid rod-shaped cosmetic of the present invention contains a gelling agent, an oily component, etc. in addition to the above-mentioned components, and further, an optional component used in a normal solid rod-shaped cosmetic. For example, preservatives, ultraviolet absorbers, chelating agents, moisturizers, antioxidants such as vitamin E (tocopherol acetate), cosmetological ingredients, fragrances and the like can be appropriately contained within a range that does not impair the effects of the present invention. ..

Examples of the gelling agent that can be used include tri (behenic acid / isostearic acid / icosanedioic acid) glyceryl and candelilla wax hydrocarbons.
The content of this gelling agent is preferably 0.1 to 5%, more preferably 0.5 to 2.0%, based on the total amount of the solid stick cosmetics.

The oily component that can be used is not particularly limited, and is not particularly limited, and is diisostearyl malate, neopentyl glycol diethylhexanate, sunflower oil, castor oil, squalane, tri2-ethylhexaneglyceryl, di-2-. Neopentyl glycol ethylhexanoate, sorbitan sesquioleate, olive oil, jojoba oil, macadamia nut oil, polyglyceryl-2 triisostearate, neopentylglycol dicaproate, capril eicosenoate, diisopropyldinolate, isopropyl palmitate, tri (caprylic acid) / Caproic acid) At least one kind such as glyceryl can be mentioned.
The total content of this oily component is preferably 0 to 15%, more preferably 2 to 10%, based on the total amount of the solid bar-shaped cosmetics, from the viewpoint of usability-imparting a smooth application feeling. desirable.

The solid bar-shaped cosmetic of the present invention is kneaded by adding the above powder components (constitution material, flat pigment, pigment other than flat pigment), fixing resin component, silicone solvent, wax component, gelling agent, oily component and the like. However, by extruding this kneaded product or the like, it is possible to produce a desired solid rod-shaped cosmetic having an arbitrary shape and size such as a rectangular shape, a columnar shape, and a prismatic shape. Further, the above-mentioned flat pigment and pigments other than the above-mentioned flat pigment are well kneaded with the above lipophilic agent, that is, a lipophilic agent selected from dimethicone, lauroyl lysine and the like, and further, an extender material and a fixing resin component. , Silicone solvent, wax component, gelling agent, oily component, etc. are added and kneaded, and this kneaded product is extruded to form a solid rod of any shape and size such as rectangular, columnar, and prismatic. Cosmetics may be manufactured.
In particular, with the solid rod-shaped cosmetic of the present invention, even when used in a core feeding container having a diameter of 6 mm or less, a solid rod-shaped cosmetic suitable for eyebrow or the like having strength that does not impair the actual use characteristics can be obtained. ..

In the solid rod-shaped cosmetics of the present invention configured as described above, 60 to 90% of a powder component containing at least a pigment and an extender, a fixing resin component, a silicone solvent, and a wax component are kneaded to form a solid rod-shaped cosmetic. By molding it into a material, the mechanical strength such as breakage strength is within the practical range, it is excellent in blur drawing from above the eyebrows, it is excellent in adhesion to the eyebrows, and a line can be drawn on the skin. As a result, it is possible to obtain a solid stick-shaped cosmetic which is excellent in stability with time, particularly excellent in stability at high temperature, and does not cause surface powdering phenomenon after aging. Further, by subjecting a pigment containing a flat pigment to a lipophilic treatment, kneading and molding the pigment together with a material other than the powder, a solid rod-shaped cosmetic having further improved characteristics can be obtained. ..

It is presumed as follows why the solid bar-shaped cosmetic of the present invention can exhibit the above characteristics even though the powder component containing the pigment and the constitutional material is as large as 60 to 90%.
That is, the solid rod-shaped cosmetic of the present invention contains at least 60 to 90% by mass of a powder component containing a pigment and an extender, a fixing resin component, a silicone solvent, and a wax component, and is a fixing resin. By uniformly dispersing each component, the mechanical strength such as breakage strength can be within a practical range, and a large amount of uniformly dispersed powder component is point-bonded by the wax component. By collapsing due to a light frictional force called application, it is excellent in drawing blur on the eyebrows, and also has excellent adhesion to the eyebrows, and its shape allows lines to be drawn on the skin, making it stable over time. It has excellent properties, is particularly stable at high temperatures, has a large amount of powder components, and has a small distribution of wax components on the core surface, so that the surface dusting phenomenon does not occur after a lapse of time.

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples and the like.

[Examples 1 to 7 and Comparative Examples 1 to 11]
Solid rod-shaped cosmetics (blending unit: mass%, total amount 100% by mass) of the formulation shown in Table 1 below are roll-dispersed, dissolved, prepared, and columnar solid rod-shaped cosmetics (φ2 × 60 mm) by extrusion molding. Got
In the column of pigments used as powder components in Table 1, the blending ratios (mass ratios) of "Bengala, black iron oxide, titanium oxide, Gunjo (ultra blue), and Konjo (Prussian blue)" are in order 60:20: It was 10: 5: 5, and the average particle size of each of the two types in the pigment column and the two types in the constitution material A column was in the range of 5 to 20 μm.

Each of the obtained solid stick-shaped cosmetics was subjected to temperature resistance (70 ° C., usability immediately after 12 hours) and powdered state [surface powdering 6 months after room temperature (25 ° C.) by the following evaluation methods. Condition], usability as an eyebrow pencil, applicability on eyebrows (color development), blur drawing on eyebrows, moldability as a core, and correspondence with a simple container that does not require a cap were evaluated.
These results are shown in Tables 1 and 2 below.

[Evaluation method of temperature resistance (70 ° C, usability immediately after 12 hours)]
Each of the obtained solid stick-shaped cosmetics was allowed to stand in a constant temperature bath at 70 ° C. for 12 hours, and whether or not it could be used normally immediately after being taken out was evaluated according to the following evaluation criteria.
Evaluation criteria:
◯: Can be used well without any problem.
Δ: Can be delivered from the container as a stick-shaped cosmetic, but is deformed. ×: The stick-shaped cosmetic cannot be used because it is in a dissolved and deformed state and cannot be delivered from the container.
-: Since it cannot be applied normally as a stick-shaped cosmetic from the beginning, it does not correspond to the evaluation criteria.

[Evaluation method of powdered state [surface powdered state after 6 months at room temperature (25 ° C)]]
Each of the obtained solid rod-shaped cosmetics was allowed to stand at room temperature (25 ° C.) for 6 months, the surface of each solid rod-shaped cosmetic was observed, and the method of powder precipitation was sensory-evaluated according to the following evaluation criteria.
Evaluation criteria:
◯: There was no powdering.
Δ: Slight dusting is observed.
X: Powdering is recognized.

[Evaluation method for usability as an eyebrow pencil]
Each solid stick-shaped cosmetic obtained was used as an eyebrow pencil on the skin (eyebrows) of 25 monitors and evaluated according to the following evaluation criteria.
Evaluation criteria:
◯: More than 15 people answered that the hardness was good and they could be used well.
Δ: 15 or more responded that they were stiff but could be used well.
△△: More than 15 people answered that they were able to use it well, although it was soft.
×: More than 10 people answered that it is not suitable for drawing lines.

[Evaluation method of applicationability (color development) on eyebrows]
Each of the obtained solid stick-shaped cosmetics was used as an eyebrow pencil on the skin (eyebrows, etc.) of 25 monitors and evaluated according to the following evaluation criteria.
Evaluation criteria:
◯: The applied color could be clearly confirmed on the eyebrows of all the monitors.
Δ: Although it was 80% or less, the applied color could be confirmed on the eyebrows. ×: The applied color could not be confirmed on the eyebrows of all the monitors.

[Evaluation method of blur drawing on eyebrows]
Each of the obtained solid stick-shaped cosmetics was used as an eyebrow pencil on the skin (eyebrows, etc.) of 25 monitors and evaluated according to the following evaluation criteria.
Evaluation criteria:
◯: More than 20 people on the monitor recognized a soft and blurred coating color on the eyebrows.
Δ: More than 10 people on the monitor recognize the color applied on the eyebrows, but the eyebrows are not light.
I felt sticky.
×: It is not possible to apply a soft blur on the eyebrows of all monitors.

[Evaluation method of moldability as a core]
The moldability of each of the obtained solid bar-shaped cosmetics was evaluated according to the following evaluation criteria.
Evaluation criteria:
◯: Can be molded as a stick-shaped cosmetic and can be applied normally.
Δ: Can be molded as a stick-shaped cosmetic, but breaks or collapses when applied.
X: Cannot be molded as a stick-shaped cosmetic.

[Evaluation method for handling with simple containers that do not require a cap]
Each of the obtained solid stick-shaped cosmetics was evaluated using the eyebrow pencil container without a cap and the eyebrow pencil airtight container with a cap according to the following evaluation criteria.
Evaluation criteria:
○: Can be stored and used in a container without a cap
X: If not stored in an airtight container with a cap, the ingredients will volatilize and cannot be used as cosmetics.

As is clear from the results in Table 1 above, the solid stick-shaped cosmetics of Examples 1 to 7 which are within the scope of the present invention are stronger in actual use than those of Comparative Examples 1 to 11 which are outside the scope of the present invention. As it is, it has excellent usability as an eyebrow pencil, that is, excellent drawing performance on the skin, and excellent usability as a powder eyebrow, that is, blurring drawing performance on the eyebrows, and "powder blowing" on the surface at room temperature. It was found that the powder was suppressed and the temperature resistance [stability over time at high temperature (70 ° C. for 12 hours)] was excellent, and that it could withstand being left in the car in summer.
Looking at the comparative examples individually, since the comparative examples 1, 2 and 3 contained a large amount of wax components, precipitation of powder was observed due to temperature changes and the like. It is considered that this is because the powdery wax was deposited due to the flow of the wax component due to the difference in temperature and humidity with the passage of time. Further, it was confirmed that Comparative Examples 1, 2 and 3 are not suitable for use as a powder eyebrow that can be applied on the eyebrows because the ratio of the wax component to the powder component is large. In Comparative Examples 4 and 5, after the volatile components were volatilized, a feeling of use as a powder eyebrow was obtained, but after wearing, the inclusion of a large amount of silicone solvent caused the eyebrows to become sticky and the feeling of use was poor. It is thought that an expensive container with a cap will be required to prevent volatilization. Further, it was found that in each of Comparative Examples 1 to 5, since the ratio of the wax component to the powder component was large, the shape could not be maintained after the time-lapse test at a high temperature, and the effect of the present invention could not be exhibited. It was. Next, Comparative Example 6 is unsuitable for temperature resistance and usability as an eyebrow pencil because the powder component exceeds 90% by mass. Comparative Examples 7 to 9 are cases in which the fixing resin component is not contained, the silicone solvent is not contained, the gelling agent and the wax component are not contained, and Comparative Examples 10 and 11 are powder components. It was found that the effect of the present invention could not be exhibited in these cases when the pigment and the extender were used alone.
On the other hand, in Examples 1 to 7, which are within the scope of the present invention, it was confirmed that the shape can be rather maintained due to the adhesion between a large amount of powder components, and the effect of the present invention can be exhibited. ..

The solid stick-shaped cosmetic of the present invention can be suitably used for eyebrow pencils, eyebrow powders, eye colors, eye shadows and the like.

Claims (3)

A solid rod-shaped cosmetic containing at least 70 to 90% by mass of a powder component, a fixing resin component, a silicone solvent, and a wax component, wherein the powder component is a pigment and a spherical shape having an average particle size of 5 to 30 μm. A solid rod-shaped cosmetic characterized by being a constitutional material containing resin particles. The solid rod-shaped cosmetic according to claim 1, wherein the pigment contains a lipophilic-treated flat plate pigment. The solid rod-shaped cosmetic according to claim 2, wherein the lipophilic-treated flat pigment has an average particle size of 5 to 100 μm.