hair dye container

Abstract

To provide a hair dye container capable of preventing a hair dye from being attached to a part other than an object part when being applied and allowing a user to perform fine hair dye.SOLUTION: A hair dye container is formed by integrating a storage part storing a hair dye with an application body, the application body includes a comb body including a plurality of comb teeth disposed at prescribed intervals apart, and a storage part including a solid hair dye disposed inside the comb body. The comb body is a hair dye container including comb teeth intermittently disposed in the circumferential direction of the comb body. The application body includes a grip part mounted on one end in the axial direction thereof and the application body can be attached / detached with respect to the grip part by rotation and linear operation of the application body with respect to the grip part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a hair dye container for applying a hair dye to hair. [Background technology]

[0002] Conventionally, hair dye containers include those used for applying liquids such as mascara for eye makeup (see Patent Document 1), and those in which the applicator body is impregnated with hair dye and used through the teeth of a comb (see Patent Document 2).

[0003] The hair dye container of Patent Document 1 has a structure in which liquid is stored in an application section where sheets are stacked, and is applied to the hair of the target area.

[0004] The hair dye container of Patent Document 2 has a structure in which the applicator body is impregnated with and retains the liquid, and the liquid is applied to the target hair through the comb teeth.

[0005] The hair dye container can be used to dye or straighten hair in addition to eyelashes. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-71406 [Patent Document 2] Japanese Patent Application Laid-Open No. 2008-54877 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the hair dye container in Patent Document 1 does not have a comb part, so the hair dye sheets, such as hair, may come into direct contact with the scalp, staining the scalp with the application liquid. Also, the hair dye container in Patent Document 2 has problems in that the comb teeth and the application liquid are spaced apart, making it impossible to dye fine hair and making the hair dye too large.

[0008] In view of the above circumstances, the present invention aims to provide a hair dye container that can prevent the hair dye from adhering to areas other than the target area during application and can dye hair finely. [Means for solving the problem]

[0009] The present invention is a hair dye container in which a storage section containing hair dye and an applicator body are integrated, the applicator body comprising a comb body section in which multiple comb teeth are arranged at regular intervals, and a storage section in which solid hair dye is placed inside the comb body section, and the comb teeth of the comb body section are arranged intermittently around the circumference of the comb body section.

[0010] In the present invention, it is preferable that a grip portion is attached to one axial end of the applicator body, and that the applicator body can be attached to and detached from the grip portion by rotation and linear motion relative to the grip portion.

[0011] In the present invention, it is preferable that the solid hair dye has a trapezoidal cross section when viewed in the axial direction of the comb body, and that one end and the other end of the trapezoidal shape of the hair dye are at different distances from the comb body.

[0012] In the present invention, it is preferable that the comb teeth are cut out at a portion of the circumference of the comb body to form an opening, and that the distances between one end and the other end of the comb teeth sandwiching the opening and one end and the other end of the trapezoidal shape of the hair dye are formed at different distances. [Effects of the Invention]

[0013] With the hair dye container of the present invention, when a user holds the handle to dye their hair, they can place the applicator body against the hair and move it, allowing the multiple comb parts to comb the hair.In addition, since the solid hair dye in the storage part comes into contact with the hair, the solid hair dye can be applied without dripping and can be reliably prevented from adhering to areas other than the target area.

[0014] Furthermore, by making the cloth body detachable from the gripping portion, excellent effects can be achieved, such as the ability to replace only the comb body portion while leaving the gripping portion behind once the hair dye has been used up. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is an overall view of a hair dye container according to an embodiment of the present invention, where (a) is a front view (view of the opening side), (b) is a view rotated 90 degrees circumferentially from (a), (c) is a longitudinal cross-sectional view along line CC of (a), and (d) is a view from the rear of the grip side. [Figure 2] 1, in which the cap is removed and hair can be dyed, (a) is a view from the front, (b) is a rear view, (c) is a side view rotated 90 degrees circumferentially from (b), (d) is a longitudinal cross-sectional view along line DD in (b), and (e) is a front view. [Figure 3] 3A and 3B are perspective views of the hair dye container of FIG. 2, in which (a) is a front perspective view from the back side, (b) is a front perspective view from the front side, (c) is a rear perspective view from the back side, and (d) is a rear perspective view from the front side. [Figure 4] 2. This is a component diagram of the comb body and solid hair dye removed from the grip portion in the hair dye container of FIG. 2, where (a) is a front oblique view from the rear, (b) is a view from the front, (c) is a cross-sectional view along line CC of (f), (d) is a front oblique view from the front, (e) is a rear view, (f) is a side view rotated 90 degrees circumferentially from (e), (g) is a longitudinal cross-sectional view along line GG of (e), (h) is a front view, (i) is a rear oblique view from the rear, (j) is a cross-sectional view along line JJ of (f), (k) is a view from the rear, and (l) is a rear oblique view from the front. [Figure 5] These are component diagrams of only the comb body part of the hair dye container in Figure 4, where (a) is a front oblique view from the back side, (b) is a view from the front, (c) is a front oblique view from the front, (d) is a back view, (e) is a side view rotated 90 degrees circumferentially from (d), (f) is a vertical cross-sectional view along line FF of (d), (g) is a front view, (h) is a rear oblique view from the back side, (i) is a view from the rear, and (j) is a rear oblique view from the front. [Figure 6] 2A and 2B are development views of the components of the hair dye container of FIG. 1, where (a) is a perspective view from the front and (b) is a view from the side. [Figure 7]Component diagrams of the grip part of the hair dye container in Figure 2, where (a) is a perspective view from the front, (b) is a view from the front, (c) is a side view, (d) is a vertical cross-sectional view along line DD in (b), (e) is a vertical cross-sectional view along line EE in (b), (f) is a perspective view from the rear, and (g) is a view from the rear. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0017] Figure 1 is an overall explanatory diagram of the hair dye container according to the embodiment, Figure 2 is a diagram of the hair dye container in the state where the cap is removed and hair can be dyed, Figure 3 is an oblique view of the hair dye container of Figure 2, Figure 4 is a parts diagram of the comb body part and solid hair dye removed from the handle part in the hair dye container of Figure 2, Figure 5 is a parts diagram of only the comb body part in the hair dye container of Figure 4, Figure 6 is an exploded view of the parts in the hair dye container of Figure 1, and Figure 7 is a parts diagram of the handle part in the hair dye container of Figure 2.

[0018] As shown in FIGS. 1 and 2, the embodiment relates to a hair dye container in which a storage section 18 that stores a hair dye and an applicator body 10 are integrated together.

[0019] The applicator body 10 comprises a comb body portion 14 in which a plurality of comb teeth 12 are arranged at regular intervals in the axial direction, and a storage portion 18 in which a solid hair dye 16 is placed inside the comb body portion 14, and the comb teeth 12 are arranged intermittently in the circumferential direction in the comb body portion 14.

[0020] Furthermore, a gripping part 20 is attached to one axial end of applicator 10 , and applicator 10 can be attached to and detached from gripping part 20 by rotating and linearly moving applicator 10 relative to gripping part 20 .

[0021] The solid hair dye 16 has a trapezoidal cross section when viewed in the axial direction of the comb body 14, and as shown in Figure 2, one end 16a and the other end 16b of the trapezoidal shape of the hair dye 16 are at different distances from the comb body 14.

[0022] 2 and 4, the tips of the comb teeth 12 are spaced apart and arranged intermittently in a portion of the circumference of the comb body 14, and an opening 22 is formed surrounded by the tips. The distances between one end 12a and the other end 12b of the comb teeth 12, which sandwich the opening 22, and one end 16a and the other end 16b on the trapezoidal application surface 16c side of the hair dye are different.

[0023] [Overall structure of hair dye container] The specific configuration of the hair dye container will now be described. The hair dye container has a structure in which a cap 24 having a generally cylindrical shape with a closed tip covers the applicator body 10 in a detachable manner.

[0024] When the hair dye container is not in use, cap 24 is attached to cover applicator body 10 to prevent unintentional application, as shown in Figure 1. On the other hand, when the hair dye container is in use, cap 24 is removed, as shown in Figure 2, to expose applicator body 10.

[0025] 1 and 2, the grip portion 20 is generally cylindrical, and an uneven portion 20a is formed on the outer periphery of the tip of the grip portion 20. When the hair dye container is not in use, as shown in Fig. 1, the cap 24 covers the applicator body 10, and the uneven portion 20a of the grip portion 20 fits into an engaging portion 24a on the inner periphery of the opening side of the cap 24 to prevent it from coming off.

[0026] The opening at rear end 20r of grip 20 is closed by tail plug 20t. Furthermore, an engagement portion 26 is formed inside the opening at tip 20f of grip 20, into which fixing portion 10a formed at one end of applicator 10 fits and engages.

[0027] [Applicator body 10, comb body portion 14] 1 to 6, in applicator body 10, disc-shaped base portion 14a is formed at the rear end of comb portion 14. Base portion 14a is configured to close the opening at tip portion 20f of grip portion 20 when applicator body 10 is integrated with grip portion 20.

[0028] The base 14a has a generally plate-shaped back wall 14b extending forward from the front side, and a somewhat short, generally plate-shaped fixing portion 10a extending rearward from the rear side.

[0029] A plurality of pairs of comb teeth 12 are formed extending from both widthwise ends of the back wall portion 14b toward the front side (the side visible in FIG. 2(e) or the U side in FIG. 3). As shown in FIGS. 4 and 5, the comb teeth 12 are arranged at equal intervals along the length (axial direction) of the back wall portion 14b. The tips of the comb teeth 12 form openings 22 at intervals.

[0030] The back wall portion 14b has a base portion 14a adjacent to the comb tooth 12 at the rear end in the length direction, and a front wall portion 14c adjacent to the comb tooth 12 at the front end in the axial direction.

[0031] On the back side of the back wall portion 14b (the side visible in Fig. 2(b), the side marked with symbol D in Fig. 3, etc.), multiple thin plate-like rib walls 14d are erected at equal intervals in the same arrangement as the comb teeth 12. The rib walls 14d can serve to comb hair without coming into contact with the application material, or to hold down short hairs that tend to pop out from the surface of an updo.

[0032] The outer periphery of the comb teeth 12 is formed in an arc, and as can be seen by referring to Figures 4(c) and (j), the rib wall 14d, the width end face of the back wall portion 14b, and the outer periphery of the comb teeth 12 have a common arc shape.

[0033] [Storage section 18] The storage section 18 is formed in a portion enclosed by the comb body section 14. That is, the storage section 18 is formed by the space enclosed by the base section 14a, the back wall section 14b, the tip wall section 14c, and the comb teeth 12 of the comb body section 14.

[0034] 4(c) and (j), the upper surface of the back wall portion 14b and the inner surfaces of the comb teeth 12 are formed in a shape that follows a straight line. Therefore, the storage portion 18 is formed in a rectangular shape with an opening 22 between the upper surface of the back wall portion 14b and the inner surfaces of the comb teeth 12.

[0035] 5, multiple fixing ribs 14e are provided in the storage section 18 in the shape of spikes (so as not to protrude from the opening 22) on the front side of the back wall 14b. Specifically, the fixing ribs 14e are preferably provided at intervals in the width and length directions of the back wall 14b, and are formed in multiple locations. When solid hair dye 16 is stored in the storage section 18, the fixing ribs 14e are driven into the hair dye 16 (see FIGS. 1 to 4), thereby fixing the hair dye 16. Therefore, the fixing ribs 14e reliably prevent the hair dye 16 in the storage section 18 from vibrating, rattling, or coming loose.

[0036] In applicator body 10, fixing portion 10a, which engages with engagement portion 26 to fix applicator body 10 to grip portion 20, extends rearward from base 14a of comb body portion 14 in the form of a flat plate parallel to back wall portion 14b, as shown in Figures 4 and 5.

[0037] At the rear end of the fixing portion 10a, locking pieces 10a1, 10a1 are formed on both sides in the width direction, protruding in a rectangular shape with a length shorter than the fixing portion 10a.

[0038] [Gripping part 20, engaging part 26] As shown in Figure 7, the structure of the engagement portion 26 of the gripping portion 20 includes an irregularly shaped wall 26a that partially blocks the opening entrance of the tip portion 20f, a guide step portion 26b that guides the locking pieces 10a1, 10a1 (see Figure 6) of the fixing portion 10a inside the gripping portion 20, and an engagement recess 26c that hooks the locking pieces 10a1, 10a1.

[0039] The irregularly shaped wall 26a is formed with a pair of cover walls 26a1, 26a1 (at 180 degree intervals in the circumferential direction) that form approximately 1 / 4 of the inner circumference of the arc (approximately a 45 degree arc), and locking walls 26a2, 26a2 are formed adjacent to the cover walls 26a1, 26a1 on the counterclockwise side in the circumferential direction.

[0040] As shown in Figure 7, the relationship between the inner diameter K1 of the portion where the cover walls 26a1, 26a1 and the locking walls 26a2, 26a2 are not formed, the inner diameter K2 of the opposing locking walls 26a2, 26a2, and the width W1 of the fixing portion 10a and the width W2 of the locking pieces 10a1, 10a1, as shown in Figure 6, is inner diameter K1 > width W1 > inner diameter K2 > width W2.

[0041] As shown in FIG. 7, the locking walls 26a2, 26a2 have guide step portions 26b extending rearward, and engagement recesses 26c are formed at the rear ends of the guide step portions 26b.

[0042] Therefore, when fixing applicator body 10 to gripping part 20, fixing part 10a is inserted into the opening of profile wall 26a shown in Figures 6 and 7 and moved linearly, and then applicator body 10 is rotated clockwise relative to gripping part 20 at the insertion end where base 14a abuts against tip end 20f of gripping part 20. Then, locking pieces 10a1, 10a1 of fixing part 10a fit into engaging recesses 26c, 26c on the rear side of locking walls 26a2, 26a2, and are fixed.

[0043] The hair dye container shown in FIG. 6 in a disassembled state becomes as shown in FIGS. 1 to 3 when assembled and applicator body 10 is fixed to grip portion 20. FIG.

[0044] [Hair dye 16] The solid hair dye 16 is formed with a roughly rectangular cross section to fit the inner shape of the storage section 18. More specifically, as shown in Figures 3, 4, and 6, the hair dye 16 is a roughly rectangular parallelepiped that extends in the axial direction and has a trapezoidal cross section with the application surface 16c being oblique to the back wall section 14b (or opening 22).

[0045] As shown in FIG. 4, the comb teeth 12 are cut out at a portion of the circumference of the comb body 14 to form an opening 22, and the hair dye 16 has a trapezoidal cross-sectional shape, so that one end 16a and the other end 16b of the trapezoidal shape have different heights.

[0046] Therefore, the distances between one end 12a and the other end 12b of the comb teeth 12 and one end 16a and the other end 16b of the trapezoidal shape of the hair dye, which sandwich the opening 22, are different.

[0047] Specifically, the distance between one end 12a of the comb teeth 12 and one end 16a of the trapezoidal shape of the hair dye 16 is short, and the distance between the other end 12b of the comb teeth 12 and the other end 16b of the hair dye 16 is long.

[0048] In this way, the distances between one end 12a and the other end 12b of the comb teeth 12 and one end 16a and the other end 16b of the trapezoidal shape of the hair dye 16 are different, so the state of application of the hair dye varies depending on the direction in which the hair is combed. In the embodiment, when the hair is combed from the application end 12a side, the hair easily comes into contact with the hair dye 16, allowing a larger amount to be applied, and conversely, when the hair is combed from the other end 12b side, the hair is less likely to come into contact with the hair dye 16, allowing a smaller amount to be applied.

[0049] Therefore, when you want to fully expose your hair to the hair dye at the hairline, etc., you can comb your hair from one end 12a to thoroughly comb your hair, and when you want to apply less hair dye, you can comb your hair from the other end 12b, so you can adjust the direction of combing.

[0050] Therefore, it is possible to provide a hair dye container that can prevent the hair dye 16 from adhering to areas other than the target area during application and can dye hair finely.

[0051] [Hair dye 16 materials] Here, a solid hair dye suitable for use in the hair dye 16 (hair cosmetic) of the embodiment is Fee contains (A) Belamcanda chinensis extract, (B) rice bran extract, (C) camellia extract, and (D) one or more organic acids selected from lactic acid, citric acid, and glutamic acid, and the total amount of (A), (B), and (C) is 0.001 to 5.0% by mass in terms of dry solids based on the total hair dye composition. This hair dye preferably further contains (E) a vegetable oil, and more preferably the amount of (E) is 0.01 to 5.0% by mass based on the total hair dye composition.

[0052] The extract of Belamcanda chinensis, component (A) used in hair dyes, is obtained by extracting the rhizomes of Belamcanda chinensis with a mixture of water, 1.3-butylene glycol, and absolute ethanol. Commercially available products include Falcorex Belamcanda chinensis 1.17% Solution manufactured by Ichimaru Falcos Co., Ltd.

[0053] The rice bran extract, component (B) used in the hair dye of this embodiment, is an extract obtained by extracting rice bran with water, 1,3-butylene glycol, or a mixture of the two. Commercially available products include "Rice Bran Extract 1% Solution" manufactured by Koei Kogyo Co., Ltd.

[0054] The camellia extract (C) used in the hair dye of this embodiment is an extract obtained by extracting defatted camellia seeds with water. Commercially available products include "Camellia Seed Extract 100% Powder" manufactured by Maruzen Pharmaceutical Co., Ltd.

[0055] The blending amounts of components (A), (B), and (C) used in the hair dye of the embodiment are not particularly limited, but the combined amount of the three components is 0.001 to 5.0 mass% (hereinafter simply referred to as %), and preferably 0.003 to 3.0%, in terms of dry solids, relative to the entire hair dye composition. If it is 0.001% or less, sufficient effects cannot be obtained, and if it is 5.0% or more, the raw material odor is strong and undesirable.

[0056] The organic acid (D) used in the hair dye of the present embodiment is not particularly limited, but examples include lactic acid, citric acid, tartaric acid, glutamic acid, etc. One or more of these organic acids may be appropriately selected and used. The amount of these organic acids to be added is not particularly limited, but is preferably 0.1 to 3.0%, more preferably 0.5 to 2.0%, based on the total hair dye composition. A content of 0.1% or more can provide sufficient softness, and a content of 3.0% or less is preferable from a formulation perspective.

[0057] The vegetable oil (component (E)) suitable for use in the hair dye of the present embodiment is not particularly limited, but examples include rice bran oil, rice germ oil, wheat germ oil, camellia oil, walnut seed oil, jojoba oil, safflower oil, olive oil, sunflower oil, and camellia oil. One or more of these vegetable oils may be appropriately selected and used. The blending amount of these vegetable oils is not particularly limited, but is preferably 0.001 to 10.0%, more preferably 0.01 to 5.0%, of the total hair dye composition. A blending amount of 0.001% or more provides sufficient shine, while a blending amount of 10.0% or less is preferred because excessive stickiness is not generated.

[0058] In addition to the above-mentioned components, the hair dye of the embodiment can contain other components commonly used in hair dyes depending on the purpose, as long as the purpose of the present invention is achieved. These components include, for example, anionic surfactants, nonionic surfactants, cationic surfactants, moisturizers, silicone derivatives, oils, plant extracts, viscosity modifiers, pearlizing agents, chemicals, preservatives, chelating agents, antioxidants, pH adjusters, pigments, fragrances, etc.

[0059] The hair dye of the embodiment can be used in hair shampoo, hair rinse, hair treatment, hair lotion, hair liquid, hair foam, etc., regardless of the target or formulation. These can be produced by blending the hair dye of the embodiment in a conventional manner.

[0060] Although blending the vegetable oil of the component (E) into the hair dye of the embodiment is effective in obtaining gloss, in the case of a hair dye for cleansing such as a hair shampoo, it may cause a decrease in foaming, so it is not necessarily preferable to blend it. It is preferable to add it to obtain gloss within a range that does not result in deterioration.

[0061] [Material of comb body portion 14 or grip portion 20] In one embodiment, the comb body 14 preferably contains inorganic particles containing at least one selected from the group consisting of iron oxide, aluminum oxide, zinc oxide, barium sulfate, and zirconium oxide, and having an isoelectric point of 7 or higher in water as determined by electrophoresis laser Doppler spectroscopy, cuprous oxide particles, a binder resin, and an organic solvent, wherein the inorganic particles are contained in an amount of 20 to 60 parts by mass and the cuprous oxide particles are contained in an amount of 0.1 to 10 parts by mass per 100 parts by mass of the heating residue of the antiviral resin composition as measured in accordance with JIS K5601-1-2, and the inorganic particles and cuprous oxide particles have an average secondary particle diameter of less than 200 nm as measured by dynamic light scattering and cumulant analysis. Use of the antiviral resin composition enables a clean hair dyeing operation.

[0062] More specifically, the antiviral resin composition according to the embodiment contains inorganic particles having an isoelectric point of 7 or higher in water as determined by an electrophoretic laser Doppler spectroscopy, cuprous oxide particles, a binder resin, and an organic solvent.

[0063] The inorganic particles used are inorganic compounds with an isoelectric point of 7 or higher in water. By using such inorganic particles in combination with cuprous oxide, it is possible to obtain an antiviral resin composition that effectively inhibits viral proliferation without using a photocatalytic substance such as titanium oxide. As mentioned above, the isoelectric point is the value in water determined by electrophoresis laser Doppler spectroscopy, and this value can be measured in accordance with Japanese Industrial Standard JIS R1638 (Method for determining the isoelectric point of fine ceramic powders).

[0064] The inorganic compound constituting the inorganic particles is not particularly limited as long as it has an isoelectric point of 7 or higher. However, it is preferable that the inorganic particles contain at least one selected from the group consisting of iron oxide (Fe2O3, Fe3O4), aluminum oxide (Al2O3), zinc oxide (ZnO), barium sulfate (BaSO4), and zirconium oxide (ZrO2). When the inorganic particles contain such a compound, in combination with cuprous oxide (Cu2O), it becomes possible to easily obtain a coating that exhibits high antiviral properties. Note that the inorganic particles may be particles composed of at least one selected from the group consisting of iron oxide, aluminum oxide, zinc oxide, barium sulfate, and zirconium oxide.

[0065] The average primary particle diameter of the inorganic particles is preferably 2 nm to 80 nm. Even if the average primary particle diameter of the inorganic particles is outside this range, the effects of the present invention can be achieved. However, if the average primary particle diameter of the inorganic particles is less than 2 nm, the surface area of ​​each inorganic particle becomes too small, which may make it difficult to achieve the valence stabilization effect of the cuprous oxide particles described below. Furthermore, if the average primary particle diameter of the inorganic particles exceeds 80 nm, it becomes difficult to achieve sufficient microparticulation in the dispersion treatment step described below. As a result, the inorganic particles may aggregate and precipitate easily during the dispersion treatment step or during storage after dispersion treatment. The average primary particle diameter of the inorganic particles can be determined, for example, by measuring the diameter of multiple inorganic particles using a transmission electron microscope (TEM).

[0066] The average primary particle size of the inorganic particles is preferably 5 nm to 50 nm, and more preferably 5 nm to 30 nm. Such an average primary particle size allows the inorganic particles to be highly dispersed in an organic solvent while maintaining a high surface area.

[0067] Furthermore, the antiviral resin composition of this embodiment contains cuprous oxide particles in addition to the inorganic particles. Many copper compounds have been reported to exhibit antiviral activity, but copper(I) oxide (cuprous oxide, CuO) has higher antiviral activity than copper(II) oxide (CuO). That is, cuprous oxide easily releases copper ions, and upon contact with viruses, the released copper ions bind to proteins, reducing their activity and making it easier to inhibit the metabolic function of the virus. Furthermore, the catalytic action of the released copper ions converts oxygen in the air into active oxygen, facilitating the decomposition of organic matter on viruses. Therefore, it is preferable to use particles made of copper(I) oxide as the cuprous oxide particles.

[0068] As described above, the antiviral resin composition of this embodiment is a mixture of inorganic particles having an isoelectric point of 7 or more in water and cuprous oxide particles. Copper(I) oxide inhibits the metabolic function of viruses and has the effect of decomposing organic matter on viruses. However, when copper(I) oxide is oxidized to copper(II) oxide, this effect may be reduced. Therefore, the antiviral resin composition of this embodiment contains inorganic particles having an isoelectric point of 7 or more in order to stabilize the valence of the cuprous oxide particles. As a result, the oxidation of cuprous oxide particles to copper oxide particles in the coating film described below is suppressed, making it possible to maintain the antiviral activity of the cuprous oxide particles for a long period of time.

[0069] The cuprous oxide particles may have a crystalline structure or an amorphous structure. Furthermore, when the cuprous oxide particles have a crystalline structure, regardless of the crystalline structure, they can coordinate with proteins that constitute the surfaces of bacteria or viruses, thereby changing the structure of the proteins and inactivating the bacteria or viruses. Therefore, the crystalline structure of the cuprous oxide particles is not particularly limited.

[0070] The average primary particle diameter of the cuprous oxide particles is preferably 2 nm to 80 nm. Even if the average primary particle diameter of the cuprous oxide particles is outside this range, the effects of this embodiment can be achieved. However, if the average primary particle diameter of the cuprous oxide particles is less than 2 nm, the surface area of ​​each cuprous oxide particle may be too small, making it difficult for copper ions to be eluted. Furthermore, if the average primary particle diameter of the cuprous oxide particles exceeds 80 nm, it may be difficult to achieve sufficient microparticulation in the dispersion treatment step described below. As a result, the cuprous oxide particles may aggregate and precipitate during the dispersion treatment step or during storage after dispersion treatment. The average primary particle diameter of the cuprous oxide particles can be determined using a transmission electron microscope, as with inorganic particles.

[0071] The cuprous oxide particles preferably have an average primary particle size of 10 nm to 70 nm, more preferably 30 nm to 60 nm. Such an average primary particle size allows the cuprous oxide particles to be highly dispersed in an organic solvent while maintaining a high surface area.

[0072] The antiviral resin composition of this embodiment contains a binder resin. The binder resin is not particularly limited as long as the stability and antiviral properties of the coating obtained from the resin composition are ensured. Examples of binder resins that can be used include alkyd-based resins, acrylic-based resins, melamine-based resins, urethane-based resins, epoxy-based resins, and silicone-based resins. Polyester-based resins, polyamic acid-based resins, polyimide-based resins, styrene-maleic acid-based resins, and styrene-maleic anhydride-based resins can also be used. Various acrylic acid-based monomers and acrylate-based monomers are also applicable. Particularly preferred resins and monomers for the binder resin include urethane-based resins, acrylic resins, acrylic monomers, polyamic acid-based resins, polyimide-based resins, styrene-maleic acid-based resins, and styrene-maleic anhydride-based resins. One type of binder resin may be used alone, or two or more types may be used in combination.

[0073] The antiviral resin composition of this embodiment contains an organic solvent to disperse the inorganic particles and cuprous oxide particles and to adjust the viscosity and solid content of the resin composition. Examples of organic solvents include aromatic hydrocarbons (toluene, xylene, etc.), alcohols (methanol, ethanol, isopropyl alcohol, etc.), and ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone, etc.). Other examples include aliphatic hydrocarbons (hexane, heptane, etc.), ethers (tetrahydrofuran, etc.), amide solvents (N,N-dimethylformamide (DMF), dimethylacetamide (DMAc), etc.), and nitrile solvents. These organic solvents may be used alone or in combination.

[0074] Here, the surfaces of inorganic particles and cuprous oxide particles are often highly polar. Therefore, to prevent aggregation of these particles and disperse them so that the average secondary particle diameter is, for example, 200 nm or less, it is preferable to use a highly polar organic solvent. Examples of such highly polar organic solvents include alcohol-based, ketone-based, and nitrile-based organic solvents. Specifically, primary alcohols such as methanol, ethanol, and propanol; secondary alcohols such as 2-propanol and 2-butanol; and tertiary alcohols such as 1,1,1-trimethylmethanol can be used. Polyhydric alcohols such as ethylene glycol and propylene glycol; dialkyl ketones such as acetone and methyl ethyl ketone; and nitrile-based solvents such as acetonitrile, propionitrile, and pivalonitrile can also be used.

[0075] In the antiviral resin composition according to this embodiment, the inorganic particles are contained in an amount of 20 to 60 parts by mass per 100 parts by mass of the heating residue of the antiviral resin composition. That is, the inorganic particles are contained in an amount of 20 to 60 parts by mass per 100 parts by mass of the solid content of the antiviral resin composition excluding the organic solvent. If the inorganic particle content is less than 20 parts by mass, the effect of the inorganic particles in stabilizing the valence of the cuprous oxide may be insufficient, and the antiviral performance of the cuprous oxide particles may be reduced. On the other hand, if the inorganic particle content exceeds 60 parts by mass, the resulting coating may become too porous, which may adversely affect the strength, durability, adhesion, and the like of the coating.

[0076] The content of the inorganic particles is preferably 30 to 60 parts by mass, and more preferably 40 to 60 parts by mass, per 100 parts by mass of the heating residue of the antiviral resin composition. By keeping the content within this range, it is possible to improve the strength, durability, and adhesion of the coating while ensuring sufficient antiviral performance.

[0077] Furthermore, in the antiviral resin composition according to this embodiment, the content of cuprous oxide particles is 0.1 to 10 parts by mass per 100 parts by mass of the heating residue of the antiviral resin composition. That is, the cuprous oxide particles are contained in an amount of 0.1 to 10 parts by mass per 100 parts by mass of the solid content of the antiviral resin composition excluding the organic solvent content. If the content of cuprous oxide particles is less than 0.1 part by mass, protein denaturation may not occur sufficiently on the surface of the formed coating, resulting in insufficient antiviral performance. On the other hand, if the content of cuprous oxide particles exceeds 10 parts by mass, the effect of coloring by the cuprous oxide particles may become significant, potentially impairing the appearance.

[0078] The content of the cuprous oxide particles is preferably 0.3 to 5 parts by mass, and more preferably 0.3 to 3 parts by mass, per 100 parts by mass of the heating residue of the antiviral resin composition. By keeping the content within this range, it is possible to improve the physical properties of the coating and suppress unnecessary coloration while ensuring sufficient antiviral performance.

[0079] The heating residue in this specification can be measured in accordance with Japanese Industrial Standard JIS K5601-1-2 (Testing methods for paint components - Part 1: General rules - Section 2: Heating residue). Then, by performing elemental analysis on the heating residue, the contents of inorganic particles, cuprous oxide particles, and titanium oxide, which will be described later, can be determined.

[0080] In the antiviral resin composition, the inorganic particles and cuprous oxide particles preferably have an average secondary particle diameter of 200 nm or less. The effects of the present invention can be achieved even if the average secondary particle diameter of these particles exceeds 200 nm. However, if the average secondary particle diameter exceeds 200 nm, the surface area of ​​the inorganic particles and cuprous oxide particles decreases, which may result in a decrease in antiviral activity. Furthermore, if the average secondary particle diameter of these particles is 200 nm or less, the transparency of the resulting coating can be ensured. The lower limit of the average secondary particle diameter of the inorganic particles and cuprous oxide particles is not particularly limited, but can be, for example, 50 nm. If the average secondary particle diameter of these particles is 50 nm or more, destruction of the crystalline structure of these particles is suppressed, thereby enabling enhanced antiviral activity. In this specification, the average secondary particle diameter of the inorganic particles and cuprous oxide particles is measured by dynamic light scattering and then used as the average secondary particle diameter obtained by cumulant analysis.

[0081] The antiviral resin composition of this embodiment may contain additives, such as a dispersant for inorganic or organic fine particles, an antifoaming agent, a silane coupling agent, a thixotropy-imparting agent (thickener), an antioxidant, an ultraviolet absorber, etc. The amount of each additive used is preferably 5% by mass or less, and more preferably 2% by mass or less, of the total amount of the antiviral resin composition of this embodiment.

[0082] The dispersant may be an organic dispersant or an inorganic dispersant, and examples of the organic dispersant include a polymer dispersant having a weight-average molecular weight of 2,000 to 500,000 and a low-molecular dispersant having a weight-average molecular weight of less than 2,000.

[0083] The thixotropy-imparting agent may be an inorganic thixotropy-imparting agent or an organic thixotropy-imparting agent. Examples of the inorganic thixotropy-imparting agent include bentonite, organically treated bentonite, and ultrafine surface-treated calcium carbonate. Examples of the organic thixotropy-imparting agent include hydrogenated castor oil wax, calcium stearate, aluminum oleate, and polymerized linseed oil.

[0084] As the antioxidant, hindered phenol-based or amine-based antioxidants can be used. Examples of hindered phenol-based antioxidants include triethylene glycol-bis-[3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate]. Also, examples of 1,6-hexanediol-bis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]. Further examples include octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate and 3,5-di-t-butyl-4-hydroxybenzylphosphonate-diethyl ester. Examples of amine-based antioxidants include n-butylamine, triethylamine, diethylaminomethyl methacrylate, etc.

[0085] Examples of ultraviolet absorbers that can be used include benzotriazoles, triazines, benzophenones, and oxalic acid anilides. Benzotriazoles include 2-(5-methyl-2-hydroxyphenyl)benzotriazole and 2-(3,5-di-t-butyl-2-hydroxyphenyl)benzotriazole. Other examples include 2-(3,5-di-t-butyl-2-hydroxyphenyl)-5-chlorobenzotriazole and 2-(3,5-di-t-amyl-2-hydroxyphenyl)benzotriazole. Triazines include 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-[(hexyl)oxy]phenol. Benzophenones include 2-hydroxy-4-n-octyloxybenzophenone. Oxalic acid anilides include 2-ethoxy-2'-ethyloxalic acid bisanilide.

[0086] The antiviral resin composition according to this embodiment contains inorganic particles, cuprous oxide particles, a binder resin, and an organic solvent. The inorganic particles contain at least one selected from the group consisting of iron oxide, aluminum oxide, zinc oxide, barium sulfate, and zirconium oxide, and have an isoelectric point in water of 7 or higher as determined by electrophoresis laser Doppler spectroscopy. The antiviral resin composition contains 20 to 60 parts by mass of inorganic particles and 0.1 to 10 parts by mass of cuprous oxide particles per 100 parts by mass of the heating residue. In this way, the resin composition according to this embodiment contains both inorganic particles and cuprous oxide particles, so the valence of the cuprous oxide particles remains stable for a long period of time, enabling the composition to exhibit high antiviral properties.

[0087] Furthermore, when a photocatalytic substance such as titanium oxide or metal-supported titanium oxide is contained in a coating as in the past, the photocatalytic substance oxidatively decomposes the organic binder resin when excited by light, which can cause problems in the coating such as whitening, cracking, peeling, etc. However, the antiviral resin composition of the present embodiment can exhibit high antiviral properties without containing a photocatalytic substance, and therefore can improve the durability of the coating.

[0088] The materials of the comb body and the hair dye (hair cosmetic) in the embodiments are merely examples and are not limiting. [Industrial Applicability]

[0089] The hair dye container of the present invention can be used for dyeing hair. [Explanation of symbols]

[0090] 10. Applicator 10a Fixed part 10a1 Locking piece 12 comb teeth 12a One end 12b Other end 14 Comb part 14a base 14b Back wall part 14c Front wall 14d Rib Wall 14e fixed rib 16 Hair dye 16a one end 16b other end 16c coating surface 18 Storage section 20 Gripping part 20a Uneven part 20f tip 20r rear end 20t tail plug 22 Aperture 24 Cap 26 Engagement part 26a Irregular wall 26a1 Lid wall 26a2 Locking wall 26b Guide step 26c Engagement recess

Claims

[Claim 1] In a hair dye container in which a storage section containing a hair cosmetic and an applicator body are integrated, the applicator body includes a comb body portion having a plurality of comb teeth arranged at regular intervals, and a storage portion in which a solid hair cosmetic is placed inside the comb body portion, and the comb teeth are arranged intermittently in the circumferential direction of the comb body portion; a gripping portion is attached to one end of the applicator body in the axial direction, and the applicator body can be attached to and detached from the gripping portion by rotation and linear motion relative to the gripping portion; a protrusion for engaging with an inside of a cap is provided on the applicator body side of the gripping portion, so that the cap for covering a storage portion storing the hair cosmetic can be attached to and detached from the gripping portion; The hair cosmetic is a solid hair dye, When viewed in the axial direction of the comb body portion, the hair dye has a trapezoidal cross-sectional shape, and the comb body portion has an opening in which comb teeth are cut out at a portion in the circumferential direction, and the storage section of the comb body portion is open to the outside at the opening, The housing portion is formed by providing a substantially plate-shaped back wall portion on the opposite side of the opening as viewed in the axial direction, The distances from the back wall portion to the opening side edge of the comb teeth on one side and the other side of the opening are the same, the parallel long and short sides of the trapezoidal shape of the hair dye are adjacent to the inner surfaces of the comb teeth on one side and the other side, and the distance between the opening side edge of one side of the comb teeth and the opening side edge of the long side of the hair dye is different from the distance between the opening side edge of the other side of the comb teeth and the opening side edge of the short side of the hair dye, This hair dye container is characterized in that the back wall has an arc-shaped rib wall on the back surface opposite the opening, which allows the hair dye to be applied to the area to be applied and evenly distributed.

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