hair dye container

Abstract

To provide a hair dying container that is capable of pinpoint-dyeing a relatively small amount of hair to be dyed, ensuring that a full length of the hair is dyed.SOLUTION: A hair dying container comprises a container body 2 to accommodate a hair dye, an applicator 3 that is disposed in an opening 2a of the container body and allows the hair dye accommodated in the container body to exude from the container body, and a hair guide part 5 that brings the hair to be dyed into slide contact with a face of the applicator along a longitudinal direction of the hair. The hair guide part is integrally molded with a mouth tip member 4 attached along the opening of the container body, and the mouth tip member supports a part of the applicator projecting from the opening.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a hair dye container suitable for applying a hair dye reliably to a relatively small amount of hair over the entire length of the hair. [Background technology]

[0002] Many improvements have been proposed for hair dye containers used to apply hair dye to hair, including improvements to ease of use. One known example is the hair dye container proposed by the present applicant and disclosed in Patent Document 1. In this hair dye container, an applicator support part is attached to the opening of a bottle-shaped container that stores hair dye, and the applicator support part has a plurality of rod-shaped porous applicators arranged in a line. The applicator support part has the linearly arranged applicator elements at the center, and flat comb-shaped elements arranged on both sides of the linearly arranged applicator elements.

[0003] With this hair dye container, the numerous rod-shaped applicator bodies from which the hair dye exudes and the comb-teeth bodies on both sides of them are each self-supporting (upright), so the applicator bodies can apply the hair dye to the hair and the comb-teeth bodies can scoop up the hair separately. This allows the hair to be sufficiently scooped up by the comb teeth and then the hair dye can be applied to the hair using multiple rod-shaped applicators, making it possible to apply a relatively large amount of hair dye to a large amount of hair.

[0004] Meanwhile, another hair dye container proposed by the present applicant is known as the hair dye container disclosed in Patent Document 2. In this hair dye container, a single multi-substance applicator is placed at the opening of a bottle-shaped container that stores hair dye, and elastic rod-shaped hair clamps are placed on both sides of the applicator so as to sandwich it. Therefore, the user can pinch the tip of the hair to be dyed, insert and clamp the hair between the multi-component applicator and the hair clamp, and while holding the tip of the hair, move the applicator and the hair clamp back and forth from near the tip to near the root, thereby applying the hair dye to the hair. This hair dye container allows for application of the hair dye to a relatively small amount of hair over the entire length of the hair. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-200643 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-223656 Summary of the Invention [Problem to be solved by the invention]

[0006] For example, there are cases where a hair dye containing carbon black or the like is applied to white hairs scattered among black hair, and in this case, a pinpoint dyeing operation is performed on the entire length of a small number of white hairs, approximately one to a few. However, since the hair dye container disclosed in Patent Document 1 is suitable for applying a relatively large amount of hair dye to a large amount of hair, it is difficult to use the hair dye container disclosed in Patent Document 1 for the pinpoint hair dyeing operation described above.

[0007] On the other hand, the hair dye container disclosed in the aforementioned Patent Document 2 can efficiently dye a small amount of hair, but requires the use of both hands for the hair dyeing operation, since it is necessary to hold the hair dye container with one hand and pick up the hair to be dyed with the other hand.

[0008] The hair dye container according to the present invention has been made with the above points in mind, and aims to facilitate operation by, for example, enabling hair dyeing operation with one hand. In addition, the object is to provide a hair dye container that can dye a relatively small amount of hair in a pinpoint manner and can reliably dye the entire length of the hair. [Means for solving the problem]

[0009] The hair dye container of the present invention, which has been made to solve the above-mentioned problems, comprises a container body that contains hair dye, an applicator body that is placed at the opening of the container body and causes the hair dye contained in the container body to seep out, and a hair guide part that slides the hair to be dyed against the surface of the applicator body along the longitudinal direction of the hair, and is characterized in that the hair guide part is integrally molded with a nozzle member that is attached along the opening of the container body, and the nozzle member supports a portion of the applicator body that protrudes from the opening.

[0010] In this case, in the first embodiment, the hair guide portion is configured by a comb tooth body in which the directions of the comb teeth are aligned in one direction along the top surface of the applicator body, and the hair guide portion is characterized by having a guide function that causes hair located between the parallel comb teeth formed by the comb tooth body to slide against the top surface of the applicator body.

[0011] In addition, the hair guide portion in the second embodiment is configured by a pressing operation portion that is cantilevered on the tip member and arranged along the top surface of the applicator body, and the hair guide portion has a guide function that causes hair located between the back side of the pressing operation portion and the top surface of the applicator body to slide against the top surface of the applicator body due to the deflection of the pressing operation of the pressing operation portion.

[0012] Furthermore, the hair guide portion in the third embodiment is formed on the tip member and is composed of a first pressing operation portion and a second pressing operation portion arranged opposite both side surfaces of the applicator body, and the hair guide portion has a guide function of sliding the hair located between the back surface of the first pressing operation portion and one side surface of the applicator body, and the hair located between the back surface of the second pressing operation portion and the other side surface of the applicator body, against one and the other side surfaces of the applicator body, respectively, by deflection of the pressing operations of the first pressing operation portion and the second pressing operation portion.

[0013] In addition, in the hair dye containers of the second and third embodiments described above, it is desirable to adopt a configuration in which a protrusion that protrudes toward the applicator body is formed on the back surface of the pressing operation part formed on the guide part, and the protrusion prevents the hair from escaping between the back surface of the pressing operation part and the applicator body. [Effects of the Invention]

[0014] The hair dye container of this invention is equipped with an applicator body that is placed at the opening of the container body that contains the hair dye and that exudes the hair dye, and a hair guide portion that slides the hair to be dyed against the surface of the applicator body along the longitudinal direction of the hair. In this case, the outer shell can be formed into a rod-like body (stick type) that can be held in one hand, making it possible to easily perform hair dyeing operations with one hand and to apply pinpoint dyeing to a relatively small amount of hair to be dyed.This makes it possible to provide a hair dye container that makes it possible to reliably dye the entire length of the desired hair. [Brief explanation of the drawings]

[0015] [Figure 1] 1A and 1B show the external configuration of a first embodiment of a hair dye container according to the present invention, in which (A) is a perspective view of the applicator body facing upward, and (B) is a perspective view of the applicator body facing horizontally. [Figure 2A] 1A and 1B show the overall configuration of the first embodiment, with (A) being a front view and (B) being a vertical cross-sectional view. [Figure 2B] 1A and 1B show the overall configuration of the first embodiment, with (A) being a side view and (B) being a vertical cross-sectional view. [Figure 3] 1 shows the individual configuration of the container body, where (A) is a perspective view, (B) is a front view, and (C) is a cross-sectional view taken along line aa in (B) as viewed in the direction of the arrow. [Figure 4] 1A, 1B, and 1C show the individual configuration of the applicator part in the first embodiment, in which (A) is a perspective view, (B) is a front view, and (C) is a top view. [Figure 5A] 1A and 1B show the single component configuration of the tip member in the first embodiment, where (A) is a perspective view, (B) is a front view, and (C) is a cross-sectional view taken along line bb in (B) as viewed in the direction of the arrow. [Figure 5B] 1A and 1B show the single component configuration of the tip member in the first embodiment, where (A) is a side view, (B) is a top view, and (C) is a cross-sectional view taken along line cc in (B) as viewed in the direction of the arrow. [Figure 6] 10A and 10B show the external configuration of the second embodiment, in which (A) is a perspective view of the applicator body facing upward, (B) is a perspective view of the applicator body facing horizontally, and (C) is a perspective view of the vicinity of the applicator body. [Figure 7A] 10A and 10B show the overall configuration of the second embodiment, with (A) being a front view and (B) being a vertical cross-sectional view. [Figure 7B] 10A and 10B show the overall configuration of the second embodiment, with (A) being a side view and (B) being a vertical cross-sectional view. [Figure 8] 10A, 10B, and 10C show the individual configuration of an applicator part in a second embodiment, in which (A) is a perspective view, (B) is a front view, and (C) is a top view. [Figure 9A] 10A and 10B show the single component configuration of the tip member in the second embodiment, where (A) is a perspective view, (B) is a front view, and (C) is a cross-sectional view taken along line dd in (B) as viewed in the direction of the arrow. [Figure 9B] 10A and 10B show the single component configuration of the tip member in the second embodiment, where (A) is a side view, (B) is a top view, and (C) is a cross-sectional view seen in the direction of the arrow from the line ee in (B). [Figure 10] 10A and 10B show the external configuration of a third embodiment, in which (A) is a perspective view of the applicator body facing upward, and (B) is a perspective view of the applicator body facing horizontally. [Figure 11A] 10A and 10B show the overall configuration of the third embodiment, with (A) being a front view and (B) being a vertical cross-sectional view. [Figure 11B] 10A and 10B show the overall configuration of the third embodiment, with (A) being a side view and (B) being a vertical cross-sectional view. [Figure 12] 10A, 10B, and 10C show the individual configuration of an applicator part in a third embodiment, in which (A) is a perspective view, (B) is a front view, and (C) is a top view. [Figure 13A] 10A and 10B show the individual configuration of the tip member in the third embodiment, in which (A) is a perspective view, (B) is a front view, and (C) is a cross-sectional view taken along line ff in (B) as viewed in the direction of the arrow. [Figure 13B] 10A and 10B show the single component configuration of the tip member in the third embodiment, where (A) is a side view, (B) is a top view, and (C) is a cross-sectional view taken along line gg in (B) as viewed in the direction of the arrow. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A hair dye container according to the present invention will now be described with reference to the embodiments shown in the drawings. In each of the first to third embodiments shown below, identical or corresponding parts are denoted by the same symbols, but in each figure showing the overall configuration of the hair dye container, due to space limitations, representative parts are denoted by symbols, and details of each part will be explained by referring to the symbols shown in each figure showing the individual component configuration.

[0017] Figures 1 to 5 show a first embodiment of a hair dye container. As shown in Figures 1 and 2, which show the overall configuration of the hair dye container, this hair dye container 1 includes a container body 2 that contains a hair dye, an applicator body 3 that is placed at an opening 2a of this container body 2 and causes the hair dye contained in the container body 2 to ooze out, and a hair guide part 5 that slides the hair to be dyed against the surface of the applicator body 3 along the longitudinal direction of the hair.

[0018] The hair guide portion 5 is integrally molded with the nozzle member 4 that is attached along the opening 2a of the container body 2, and a configuration is adopted in which the nozzle member 4 supports a part of the applicator body 3 that protrudes from the opening 2a of the container body 2. In this embodiment, the hair dye in the container body 2 is stored in a state where it is impregnated into the padding 6 housed in the container body 2.

[0019] FIG. 3 shows the structure of the container body 2 alone. The container body 2 is preferably molded from a transparent or translucent resin material, and is formed into a cylindrical shape with a bottom, with an opening 2a at the top end of the container body 2, the opening 2a having the same inner diameter in the axial direction. A thick-walled portion 2b is formed to surround the opening 2a, and the outer circumferential surface of the thick-walled portion 2b is molded to have a slightly smaller diameter than the outer circumferential surface of the container body 2, forming an annular step 2c. By attaching a cylindrical cap (not shown) with a top surface from this annular step portion 2c along the outer surface of the thick portion 2b, the outer shell of the hair dye container 1, including the cap, forms a cylindrical rod-shaped body (stick type).

[0020] The thick portion 2b has a second annular step 2d formed at a position close to the upper end opening by further reducing the outer diameter. The second step 2d is used to attach a tip member 4, which will be described later. The container body 2 described above can also be used in common with the hair dye containers 1 of the second and third embodiments described later.

[0021] FIG. 4 shows the structure of the applicator part 3 as a single item. The applicator body 3 is preferably a porous body with continuous pores and a porosity of 30 to 90%, and is made of a material that has capillary force to draw the hair dye from the container body 2, appropriate liquid replenishment properties, and durability at the applicator tip. Examples of materials that satisfy the above conditions include wool felt, heat-sealed synthetic resin felt, plastic porous bodies, resin-processed fiber bundles, and heat-sealed fiber bundles.

[0022] Applicator body 3 made of the above-mentioned material forms a prismatic applicator part 3a having a flat top surface 3b on the tip side, as shown in Figure 4. In this embodiment, a pair of chamfers 3c are provided on the left and right ridges in the longitudinal direction of top surface 3b. Additionally, a hair dye outlet portion 3d, which is narrower than the applicator portion 3a, is formed from the center of the applicator body 3 toward the tail end. A step portion 3e formed between the applicator portion 3a and the outlet portion 3d abuts against the upper end of the opening 2a in the container body 2 (see FIG. 2A), thereby positioning the applicator body 3 relative to the container body 2. Furthermore, at the tail end of applicator body 3, a wedge-shaped contact portion 3f that contacts padding 6 inside container body 2 is formed next to hair dye outlet portion 3d.

[0023] Therefore, as shown in Figures 2A and 2B, when this applicator body 3 is attached to the opening 2a of the container body 2, the contact portion 3f on the tail end side comes into contact with the padding 6 stored in the container body 3, sucks up the hair dye impregnated in the padding 6, and acts to supply the hair dye to the applicator portion 3a via the outlet portion 3d.

[0024] 5A and 5B show a single-item configuration of a tip member 4 having a hair guide portion 5 integrally molded at the tip, which is molded from a flexible resin material. This spout member 4 has a cylindrical body 4a with a short axial dimension molded on the base end side, and the inner surface 4b of this cylindrical body 4a is fitted into the second step portion 2d of the container body 2 described above, thereby attaching the spout member 4 to the container body 2. A square cylinder 4c is formed on the nozzle member 4 facing forward following the cylindrical body 4a, and the applicator part 3a of the applicator body 3, which is formed in a square pillar shape, is inserted along the inner surface of this square cylinder 4c, and the applicator body 3 is supported by the nozzle member 4 (see Figure 2A).

[0025] As shown in Figures 5A and 5B, comb teeth 5A that function as hair guide parts 5 are integrally molded with the front ends of the opposing long sides that make up the rectangular tube body 4c of the tip-end member 4. The comb-tooth body 5A employed in the first embodiment has three comb teeth 5a formed facing each other at the front end of each of the opposing long sides of the rectangular cylindrical body 4c, with the tips of the comb teeth 5a curved toward the center. The tips of each pair of comb teeth 5a are arranged facing each other at the center. Furthermore, top surface 3b of applicator body 3 supported by tip member 4 is positioned slightly spaced apart from comb teeth 5a (see FIGS. 1 and 2B). With this configuration, hair 7 to be dyed can be guided along top surface 3b of applicator body 3 between comb teeth 5a, as shown schematically by solid lines in Figure 1(B).

[0026] According to the hair dye container 1 of the first embodiment described above, the hair guide portion 5 is configured by a comb-tooth body 5A in which the comb teeth 5a are aligned in one direction along the top surface 3b of the applicator body 3. Therefore, the hair 7 is positioned linearly between the parallel comb teeth 5a of the comb-tooth body 5A and acts to slide against the top surface 3a of the applicator body 3. This makes it possible to provide a hair dye container that can pinpoint dye a relatively small amount of hair to be dyed and can reliably dye the entire length of the desired hair.

[0027] 6 to 9 show a second embodiment of the hair dye container. In each figure showing the hair dye container of this second embodiment, parts corresponding to those of the hair dye container of the first embodiment already described are indicated by the same symbols, and therefore detailed explanations thereof will be omitted as appropriate. The hair guide portion 5 in this hair dye container 1 is integrally molded with a nozzle member 4 that is attached along the opening 2a of the container body 2 as shown in Figures 6 and 7, and the nozzle member 4 supports a part of the applicator body 3 that protrudes from the opening 2a of the container body 2.

[0028] Hair guide section 5 is supported in a cantilevered manner by tip member 4 and is configured by pressing operation section 5B including pressing body 5c arranged along top surface 3b of applicator body 3. This allows hair 7 located between the back side of pressing body 5c and top surface 3b of applicator body 3 to be brought into sliding contact with top surface 3b of applicator body 3 by the deflection of pressing body 5c.

[0029] Figure 8 shows the individual configuration of the applicator body 3 used in the hair dye container 1 of the second embodiment, and its basic configuration is similar to that of the applicator body 3 used in the hair dye container 1 of the first embodiment shown in Figure 4. In the applicator body 3 shown in Figure 8, chamfers 3c on the top surface 3b of the applicator portion 3a are provided along the left and right ridge lines in the thickness direction of the applicator body 3, respectively.

[0030] Figures 9A and 9B show the single-item configuration of the nozzle member 4 equipped with a hair guide portion 5 used in the hair dye container 1 of the second embodiment, which is integrally molded from a flexible resin material, similar to the nozzle member 4 of the first embodiment. Similarly to the hair dye container 1 of the first embodiment, the nozzle member 4 has a cylindrical body 4a with a short axial dimension molded on the base end side of the nozzle member 4, and the inner surface 4b of this cylindrical body 4a fits into the second step portion 2d of the container body 2, thereby attaching the nozzle member 4 to the container body 2.

[0031] The pressing operation part 5B constituting the hair guide part 5 in this embodiment is formed on the tip side of the tip member 4, and a pressing body 5c is formed via a cantilever 5d integrally formed with part of the cylindrical body 4a of the tip member 4. The surface of this pressing body 5c is bent at an angle slightly exceeding 90 degrees with respect to the longitudinal direction of the cantilever 5d, and an appropriate recess is provided on the upper surface side so that the index finger, for example, of the hand holding the hair dye container 1 can be placed on it.

[0032] That is, by applying a pressing force to the upper surface of the pressing body 5c, a part of the cantilever beam 5d supporting the pressing body 5c is bent, and the pressing body 5c is displaced downward (toward the base end of the tip member 4). As a result, the back side of the pressing body 5c comes into close contact with the top surface 3b of the applicator body 3 located directly below the pressing body 5c. The back surface of the pressing body 5c is made almost flat, and a downward protrusion 5e is formed on the back surface at the free end side opposite to that supported by the cantilever beam 5d. This protrusion 5e is composed of a small triangular protrusion, and when the pressing body 5c is displaced downward, the protrusion 5e abuts against the end of the top surface 3b of the applicator 3.

[0033] 6(C), hair 7 to be dyed is positioned between applicator 3 and pressing body 5c inside protrusion 5e, and protrusion 5e prevents hair 7 from passing between the back surface of pressing body 5c and applicator 3. This ensures that hair 7 slides against applicator 3 in the longitudinal direction. Furthermore, a flat support 4e is formed facing the pressing body 5c opposite the cantilever 5d in the tip member 4. This is used to support the applicator 3 by interposing the applicator 3 between the cantilever 5d and the support 4e.

[0034] According to the hair dye container 1 of the second embodiment described above, the hair guide portion 5 is configured by a pressing operation portion 5B that is cantilevered by the tip member 4 and arranged along the top surface 3b of the applicator body 3. Then, the hair 7 located between the back side of the pressing operation portion 5B and the top surface 3b of the applicator body 3 can be brought into sliding contact with the top surface 3b of the applicator body 3 by the deflection caused by the pressing operation of the pressing operation portion 5B. Therefore, by gripping the hair dye container 1 and placing a relatively small amount of hair to be dyed between the pressing operation part 5 and the top surface 3b of the applicator body 3, and then sliding the pressing operation part 5 along the hair while keeping it in a bent state, it is possible to dye the hair in a pinpoint manner. This makes it possible to provide a hair dye container that makes it possible to reliably dye the desired length of hair.

[0035] 10 to 13 show a third embodiment of the hair dye container. In each figure showing the hair dye container of this third embodiment, parts corresponding to those of the hair dye containers of the first and second embodiments already described are indicated by the same symbols, and therefore detailed explanations thereof will be omitted as appropriate. The hair guide portion 5 in this hair dye container 1 is integrally molded with a nozzle member 4 that is attached along the opening 2a of the container body 2, as shown in Figures 10 and 11, and the nozzle member 4 supports a part of the applicator body 3 that protrudes from the opening 2a of the container body 2.

[0036] Hair guide portion 5 is formed on tip member 4 and is composed of first pressing operation portion 5C and second pressing operation portion 5D arranged facing each other on both side surfaces of applicator body 3. As a result, hair 7 located between the back surface of first pressing operation portion 5C and one side surface 3h of applicator body 3, and hair 7 located between the back surface of second pressing operation portion 5D and the other side surface 3i of applicator body 3, can each be brought into sliding contact with applicator body 3 by deflection caused by pressing first pressing operation portion 5C and second pressing operation portion 5D.

[0037] Figure 12 shows the individual configuration of the applicator body 3 used in the hair dye container 1 of the third embodiment, and its basic configuration is similar to that of the applicator body 3 used in the hair dye container 1 of the second embodiment shown in Figure 8. In the applicator body 3 shown in Figure 12, the applicator portion 3a is formed to be slightly smaller in width than the applicator body 3 shown in Figure 8, and is tapered so that the width between one side surface 3h and the other side surface 3i decreases toward the top surface 3b of the tip.

[0038] Figures 13A and 13B show the single-item configuration of the nozzle member 4 equipped with a hair guide portion 5 used in the hair dye container 1 of the third embodiment, which is integrally molded from a flexible resin material, similar to the nozzle member 4 of the first and second embodiments. Like the hair dye container 1 of the first and second embodiments, the spout member 4 has a cylindrical body 4a with a short axial dimension molded on the base end side of the spout member 4, and the inner surface 4b of this cylindrical body 4a fits into the second step portion 2d of the container body 2, thereby attaching the spout member 4 to the container body 2.

[0039] The hair guide portion 5 in this embodiment is composed of a first pressing operation portion 5C formed on the tip end side of the tip member 4 and a second pressing operation portion 5D. The first pressing operation part 5C and the second pressing operation part 5D are formed parallel to each other, and by providing a moderate recess on both outer surfaces, they are configured so that the index finger and thumb of the hand holding the hair dye container 1 can be placed on them. Furthermore, a thin portion 5g is formed at the base end of the first pressing operation portion 5C and the second pressing operation portion 5D on the side of the tip member 4, thereby giving flexibility to the first pressing operation portion 5C and the second pressing operation portion 5D.

[0040] Therefore, by applying pressure from both the outside of the first pressing operation unit 5C and the second pressing operation unit 5D, for example by pinching them with the index finger and thumb, the tip sides of the first pressing operation unit 5C and the second pressing operation unit 5D will bend inward due to the thin portion 5g. As a result, the inner surfaces of the first pressing operation part 5C and the second pressing operation part 5D come into surface contact with one side surface 3h and the other side surface 3i of the applicator part 3a, respectively.

[0041] The opposing inner surfaces of the first pressing operation portion 5C and the second pressing operation portion 5D are each made to be substantially flat, and a protrusion 5h is formed on the tip end side of each of them facing inward. This protrusion 5h is composed of a small triangular protrusion, and is configured to come into contact with the front end of the applicator part 3a when the inner surfaces of the first pressing operation part 5C and the second pressing operation part 5D are in surface contact with the applicator part 3a. Therefore, as shown schematically in Figure 10(B) by the solid line, by positioning the hair 7 to be dyed between the first pressing operation part 5C and the applicator body 3 inside the protrusion 5h, and / or between the second pressing operation part 5D and the applicator body 3, the protrusion 5h prevents the hair 7 from detaching, and the hair 7 can be reliably slid against the applicator body 3 along the longitudinal direction.

[0042] According to the hair dye container 1 of the third embodiment described above, the hair guide portion 5 is composed of a first pressing operation portion 5C and a second pressing operation portion 5D arranged opposite each other on both sides of the applicator body 3, and bending of the first pressing operation portion 5C and the second pressing operation portion 5D from both sides causes the hair to slide against one side surface 3h and / or the other side surface 3i of the applicator body 3. This makes it possible to apply pinpoint dyeing to the desired length of the hair.

[0043] The hair dye container 1 described above can be suitably used to dye, for example, partially existing gray hair. A preferred hair dye that can be used for dyeing gray hair, etc., is one that contains at least a cosmetic pigment dispersion containing carbon black, a black pigment described below, and general-purpose hair dye components, such as a resin, a lower alcohol, a hair dyeing assistant, a pH adjuster, and water. In this case, colorants other than the carbon black described above can also be added as needed depending on the color variation of the hair dye. The content of the above-mentioned pigment dispersion for cosmetics containing carbon black is preferably 0.5 to 30.0% by mass, more preferably 1.0 to 25.0% by mass, based on the total amount of the hair dye, from the viewpoints of hair dyeing effect, solubility, storage stability, etc.

[0044] The carbon black-containing cosmetic pigment dispersion that can be used in hair dyes contains carbon black, a water-soluble organic solvent, and an (ethyl betaine methacrylate / acrylates) copolymer.

[0045] First, carbon black is used as a coloring material for eye makeup cosmetics and hair dyes, and is not particularly limited as long as it is carbon black that is normally used as a coloring material for black-based liquid cosmetics, and various types of carbon black can be used. Generally, aqueous dispersions containing carbon black have problems such as a long dispersion time due to the strong cohesion of the carbon black, and reduced productivity and stability over time during the production of the dispersion. However, these problems can be solved by preparing a dispersion having the following blending characteristics.

[0046] From the viewpoints of stability after dispersion and convenience in producing cosmetics, the content of carbon black used is preferably 1 to 32 mass %, more preferably 2 to 25 mass %, relative to the total amount of the pigment dispersion for cosmetics. By setting the carbon black content to 1% by mass or more, excellent productivity and excellent coloring properties when added to cosmetics are achieved, while by setting the content to 32% by mass or less, dispersibility and stability over time are further improved.

[0047] The water-soluble organic solvent used in the pigment dispersion for cosmetics is a solvent for the pigment dispersion for cosmetics, and includes lower alcohols having 5 or less carbon atoms. Specific examples include at least one of methyl alcohol (methanol), ethyl alcohol (ethanol), n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol, isobutyl alcohol, pentyl alcohol, ethylene glycol, propylene glycol, etc. (each alone or a mixture of two or more). In terms of safety, ease of handling, etc., the use of ethyl alcohol (ethanol) is particularly desirable.

[0048] The content of the water-soluble organic solvent used in the pigment dispersion for cosmetics is preferably 1.0 to 60.0 mass %, and more preferably 5.0 to 30.0 mass %, based on the total amount of the pigment dispersion for cosmetics, from the viewpoint of the dissolution stability of the (ethyl methacrylate betaine / acrylates) copolymer described below, and furthermore, the stability of the carbon black dispersion, particularly stability at low temperatures. By making the content of this water-soluble organic solvent 1.0 mass % or more, it is possible to effectively prevent the solvent from freezing at low temperatures and also to exert a small antiseptic effect, while by making it 60.0 mass % or less, the solution stability of the (ethyl methacrylate betaine / acrylates) copolymer described below is further improved.

[0049] The (ethyl methacrylate betaine / acrylates) copolymer used in the cosmetic pigment dispersion is a component that improves the dispersibility of carbon black and the stability over time when made into a dispersion. This (ethyl methacrylate betaine / acrylates) copolymer is a copolymer of ethyl methacrylate betaine and two or more monomers consisting of acrylic acid, methacrylic acid, or their simple esters. Its general name is N-methacryloyloxyethyl-N,N-dimethylammonium-α-N-methylcarboxybetaine·methacrylic acid alkyl ester copolymer, and it has a betaine unit in its polymer structure. Polymers with this betaine unit exhibit unique behavior that differs from other ionic polymers. Ethyl methacrylate betaine / acrylates copolymer is a component that has been used as a film-forming agent and hair styling agent, but it can also be used in new applications as a component that improves the dispersibility of carbon black and the stability over time when made into a dispersion.

[0050] Usable (ethyl methacrylate betaine / acrylates) copolymers include commercially available products such as RAM Resin-1000 (Osaka Organic Chemical Industry Co., Ltd.) and Pluscise L-440 (Go-o Chemical Industry Co., Ltd.). The content of the (ethyl betaine methacrylate / acrylates) copolymer used is preferably 3.0 to 15.0 mass %, more preferably 5.0 to 10.0 mass %, in terms of solid content, relative to the total amount of the pigment dispersion for cosmetics, in order to improve the dispersibility of carbon black and the stability over time when the dispersion is prepared. By setting the content of this (ethyl methacrylate betaine / acrylates) copolymer to 3.0% by mass or more, the dispersion state of the carbon black becomes stable and the fixation of pigments and the like when blended into cosmetics becomes good. On the other hand, by setting the content to 15.0% by mass or less, the viscosity increase is suppressed, thereby further improving the convenience of cosmetic production.

[0051] On the other hand, resins that can be used in the hair dyes described above include those that are water-resistant and have film-forming properties, such as at least one of (methacryloyloxyethyl carboxybetaine / alkyl methacrylate) copolymer, (octylacrylamide / hydroxypropyl acrylate / butylaminoethyl methacrylate) copolymer, (hydroxyethyl acrylate / butyl acrylate / methoxyethyl acrylate) copolymer, N-methacryloylethyl-N,N-dimethylammonium·α-N-methylcarboxybetaine·butyl methacrylate copolymer, and (ethyl methacrylate betaine / acrylates) copolymer. The content of these resins is desirably 0.1 to 10.0%, preferably 0.5 to 5.0%, in terms of solid content relative to the total amount of the hair dye, from the viewpoints of water resistance, texture after application to hair, and applicability.

[0052] The lower alcohols that can be used in hair dyes are preferably used from the viewpoints of low-temperature stability, drying properties, and low irritation. Examples of the lower alcohols that can be used include lower alcohols having 5 or less carbon atoms. Specific examples include at least one of methyl alcohol (methanol), ethyl alcohol (ethanol), n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol, isobutyl alcohol, pentyl alcohol, and the like (each alone or a mixture of two or more). In particular, the use of ethyl alcohol (ethanol) is desirable from the viewpoints of safety, ease of handling, and the like. The content of these lower alcohols is preferably 10 to 80% by mass, more preferably 15 to 70% by mass, and particularly preferably 15 to 65% by mass, based on the total amount of the hair dye.

[0053] Hair dyeing auxiliaries that can be used in hair dyes include those used to further improve the hair dyeing effect, and examples thereof include at least one of benzyl alcohol, phenylethyl alcohol, phenoxyethanol, propylene carbonate, propylene glycol, ethoxydiglycol, N-methylpyrrolidone, and N-methyl-2-pyrrolidone. In terms of further improving the hair dyeing effect, the content of these hair dye auxiliaries is preferably 2.0 to 20.0%, more preferably 5.0 to 15.0%, and particularly preferably 3.0 to 5.0%, based on the total amount of the hair dye.

[0054] The pH adjuster that can be used in hair dyes is used to improve coloring properties, prevent skin irritation, and prevent skin dyeing problems, and this pH adjuster is preferably used to adjust the pH of the hair dye to 2 to 5, more preferably to 3.5 to 5.0. Examples of pH adjusters that can be used include organic acids such as formic acid, acetic acid, lactic acid, tartaric acid, malic acid, citric acid, glycolic acid, etc., inorganic acids or salts thereof, and in some cases alkalis such as triethanolamine.

[0055] The remainder of the hair dye is made up of water (purified water, distilled water, ion-exchanged water, pure water, tap water, etc.). The water content is preferably 30 to 95% by mass (0.30 to 0.95) relative to the total solvent (water + water-soluble organic solvent), and more preferably 30 to 80% by mass. If the ratio of water to the total solvent is less than 30% by mass (0.30), the stability over time will be poor, and the solution stability will be poor when a water-soluble component is added.On the other hand, if the ratio exceeds 95% by mass (0.95), there is a high possibility that the antibacterial properties will be poor.

[0056] The hair dye thus constituted contains at least the cosmetic pigment dispersion containing the carbon black described above, a resin, a lower alcohol, a hair dyeing auxiliary, and a pH adjuster, but may also contain other raw materials such as thickeners, various surfactants, preservatives, ultraviolet absorbers, antioxidants, anti-reducing agents, chelating agents, oily components, fragrances, animal and plant extracts, etc. as appropriate.

[0057] The hair dye thus configured contains at least a cosmetic pigment dispersion containing carbon black, a resin, a lower alcohol, a hair dyeing auxiliary, a pH adjuster, and water, and therefore has excellent dispersibility and stability over time for the black pigment carbon black. This allows the coloring components of the hair dye to be stably dispersed, resulting in a hair dye that is excellent in storage stability, water resistance, ease of use, application, low-temperature stability, drying properties, and low irritation, and can be suitably used in the hair dye container of this invention. [Explanation of symbols]

[0058] 1 hair dye container 2 Container body 2a opening 3. Applicator 3a Application part 3b Top surface 3h One side 3i The other side 4 Tip member 4a Cylinder 4b Inner surface of cylinder 5 Hair guide 5A comb body 5a comb teeth 5B Press operation section 5c Pressurizing body 5d cantilever beam 5e protrusion 5C First pressing operation unit 5D Second pressing operation part 5g thin part 5h protrusion 6. Padding 7. Hair

Claims

1. A container body for storing a hair dye; an applicator body that is placed at the opening of the container body and causes the hair dye contained in the container body to exude; a hair guide portion that slides the hair to be dyed against the surface of the applicator along the longitudinal direction of the hair, the hair guide portion is integrally formed with a tip member that is attached along the opening of the container body, and the tip member supports a part of the applicator body that protrudes from the opening, the hair guide portion is cantilevered on the tip member and is configured by a pressing operation portion arranged along the top surface of the applicator body, The hair dye container is characterized in that the hair guide portion has a guide function that causes the hair located between the back side of the pressing operation portion and the top surface of the applicator body to slide against the top surface of the applicator body when the pressing operation portion is deflected by the pressing operation.

2. A container body for storing a hair dye; an applicator body that is placed at the opening of the container body and causes the hair dye contained in the container body to exude; a hair guide portion that slides the hair to be dyed against the surface of the applicator along the longitudinal direction of the hair, the hair guide portion is integrally formed with a tip member that is attached along the opening of the container body, and the tip member supports a part of the applicator body that protrudes from the opening, the hair guide portion is formed on the tip member and is composed of a first pressing operation portion and a second pressing operation portion that are arranged opposite to each other on both side surfaces of the applicator body, The hair dye container is characterized in that the hair guide portion has a guide function of sliding the hair located between the back surface of the first pressing operation portion and one side surface of the applicator body, and the hair located between the back surface of the second pressing operation portion and the other side surface of the applicator body, against one and the other sides of the applicator body, respectively, by deflection due to pressing operations of the first pressing operation portion and the second pressing operation portion.

3. 3. The hair dye container according to claim 1, wherein a protrusion protruding toward the applicator body is formed on the back surface of the pressing operation part formed on the guide part, and the protrusion prevents the hair from escaping by passing between the back surface of the pressing operation part and the applicator body.

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