Spray hair coloring composition

Abstract

To provide a sprayable hair coloring composition that achieves improved dispersibility of a pigment when the pigment is shaken and mixed, and can be applied to hair with a well-balanced color tone of the pigment.SOLUTION: A sprayable hair coloring composition contains (A) a pigment and (B) a cationic polymer.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a spray hair coloring composition having improved pigment dispersibility. [Background technology]

[0002] Hair colorants, which attach pigments or other coloring agents to the surface of hair to temporarily color it, have been widely used in recent years because they are easy to use and can be easily washed off with shampoo, such as when you want to color your hair for just one day on a special occasion or when you want to change your hair color on your day off.

[0003] For example, Patent Document 1 discloses a hair colorant containing at least a pigment and an amino-modified polyether-modified silicone, which exhibits good pigment dispersibility as well as a good balance of performance in terms of covering power, texture, abrasion resistance, and water resistance. The good pigment dispersibility here refers to the result of evaluating whether or not the pigment settles or aggregates when the hair colorant is stored for one month after preparation. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-95898 Summary of the Invention [Problem to be solved by the invention]

[0005] Hair colorants contain several types of pigments that adhere to the surface of the hair, changing the color of the hair. Because the pigments settle and aggregate during storage, the container must be shaken before use to uniformly redisperse the pigments. However, poor pigment dispersibility during shaking and mixing can lead to inconsistent color tones on the applied hair.

[0006] Therefore, the present invention focuses on the dispersibility of the pigment in a hair colorant when mixed by shaking, and aims to improve this. That is, an object of the present invention is to provide a spray-type hair colorant composition that has excellent dispersibility of the pigment when mixed by shaking, and that can be applied to hair with a well-balanced color tone of the pigment. [Means for solving the problem]

[0007] As a result of extensive research into the above-mentioned problems, the present inventors have discovered that the dispersibility of the pigment during mixing by shaking can be improved by adding a pigment and a cationic polymer to a spray-type hair colorant composition, and have completed the present invention.

[0008] That is, the present invention provides a spray hair coloring composition containing the following pigment and cationic polymer: The spray hair coloring composition of the present invention, which has been designed to solve the above problems, is characterized by containing (A) a pigment and (B) a cationic polymer. According to the spray type hair colorant composition of the present invention, it is possible to provide a spray type hair colorant composition in which the dispersibility of the pigment is improved when the composition is shaken and mixed during use.

[0009] In one embodiment of the spray hair colorant composition of the present invention, the pigment (A) contains Red No. 202. According to the above embodiment, even when Red No. 202, which has poor dispersibility, is contained, a spray hair colorant composition can be provided in which the dispersibility of Red No. 202 is improved when mixed by shaking.

[0010] In one embodiment of the spray hair colorant composition of the present invention, the cationic polymer (B) is a cationic acrylic resin. According to the above embodiment, by incorporating a cationic acrylic resin among cationic polymers, it is possible to provide a spray hair colorant composition in which the dispersibility of the pigment is improved when the composition is mixed by shaking during use.

[0011] In addition, one embodiment of the spray hair colorant composition of the present invention is characterized in that the ratio (B) / (A) of the content of the cationic polymer (B) to the content of the pigment (A) is 0.03 to 20. According to the above embodiment, when the ratio (B) / (A) of the content of the pigment (A) to the content of the cationic polymer (B) is set within a certain range, it is possible to provide a spray-type hair colorant composition that has improved dispersibility of the pigment when mixed by shaking during use and that further reduces stiffness when used on hair. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a spray hair colorant composition which has excellent pigment dispersibility when mixed by shaking and which can be applied to hair with a well-balanced pigment color tone. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present invention relates to a spray-type hair coloring composition characterized by containing a pigment and a cationic polymer, which has excellent pigment dispersibility when mixed by shaking and can be applied to hair with a well-balanced pigment color tone.

[0014] Hereinafter, embodiments of the spray hair coloring composition according to the present invention will be described in detail. The spray hair colorant composition described in this embodiment is merely an example for explaining the present invention, and is not intended to be limiting.

[0015] [Spray-type hair coloring composition] The spray-type hair colorant composition of the present invention is a composition having a coloring mechanism that temporarily adheres various pigments to hair by physical adhesion to color the hair, and is applied to hair using a device that sprays liquid in the form of mist, foam, etc. using gas such as high-pressure air or mechanical movement (fingers, piezoelectric element, etc.).

[0016] The spray hair colorant composition of the present invention can be applied to hair using a propellant such as a gas such as high-pressure air, a liquefied gas, or a compressed gas. The ratio of the spray concentrate containing the pigment (A) and the cationic polymer (B) to the propellant is not particularly limited and can be appropriately set in light of the desired spray form, for example, spray concentrate:propellant = 20:80 to 80:20. When the propellant ratio is 20 or more, the composition can be firmly sprayed, allowing the pigment to be evenly applied to the hair. Furthermore, when the propellant ratio is 80 or less, the force of the spray is appropriate, preventing the colorant such as the pigment from scattering and staining clothes or the surroundings.

[0017] Each component constituting the spray hair coloring composition of the present invention will be described in detail below. <Pigments> A pigment is a powder used for coloring that is insoluble in water or oil, and the pigment in the present invention is used to color hair. The type of pigment is not particularly limited, and examples thereof include inorganic pigments, organic pigments, dye-resin solid solutions, daylight fluorescent pigments, natural pigments, etc. These pigments can be used alone or in combination of two or more types depending on the desired hair color tone.

[0018] Inorganic pigments, also known as mineral pigments, are chemically inorganic pigments. They are made from natural minerals, processed or crushed from natural minerals, or from compounds of zinc, titanium, lead, iron, copper, chromium, and other raw materials. They are light- and heat-resistant and insoluble in organic solvents. There are many types, but they can be categorized by color: white pigments (e.g., titanium dioxide), red pigments (e.g., red iron oxide), yellow pigments (e.g., yellow lead), green pigments (e.g., emerald green), blue pigments (e.g., cobalt blue), purple pigments (e.g., manganese violet), black pigments (e.g., carbon black), and transparent white pigments (e.g., silica white). The inorganic pigment is not particularly limited, but examples thereof include zinc oxide, titanium oxide, red iron oxide, chromium oxide, cobalt oxide, black iron oxide, yellow iron oxide, chromium hydroxide, aluminum hydroxide, Prussian blue, barium sulfate, hydrous silicate, silicic acid anhydride, aluminum silicate, talc, kaolin, carmine, mica, magnesium carbonate, bentonite, ultramarine, manganese violet, carbon black, aluminum, copper, gold, and titanium mica.

[0019] The organic pigments are pigments primarily composed of coloring matter made from organic compounds. Organic pigments are broadly classified into organic color pigments, in which the coloring matter itself is insoluble in water, and lake pigments, in which water-soluble dyes are made insoluble by some means, such as the addition of metal salts. Organic pigments have the advantages of a wide range of vivid hues, as well as high coloring power and transparency. Examples of organic pigments include, but are not limited to, Red Nos. 202, 203, 204, 205, 206, 207, 208, 219, 220, 221, 228, and 405; Orange Nos. 203, 204, and 401; Yellow Nos. 205 and 401; and Blue No. 404. Red No. 202 (Lithol Rubin BCA) is a legally permitted monoazo pigment classified as a tar dye. Red No. 202 has particularly poor dispersibility when mixed by shaking compared to other pigments.

[0020] Red No. 202 (Lithol Rubin BCA) is a compound having the structure shown in formula (1) below. [ka]

[0021] The reason why Red No. 202 has poorer dispersibility when mixed by shaking than other pigments is not clear, but formula (1) indicates that it contains calcium (Ca). It is known that calcium reacts to precipitate organic acid calcium when, for example, calcium carbonate (CaCO3) is added to an organic acid aqueous solution. Similarly, in Red No. 202, it is presumed that the calcium contained therein interacts with other ingredients contained in the spray hair colorant composition, resulting in poorer dispersibility when mixed by shaking.

[0022] Daylight fluorescent pigments are a type of fluorescent pigment that are organic. They are characterized by their vivid color under normal light. Their brightness increases when stimulated by light such as ultraviolet light.

[0023] The natural pigments are not particularly limited, but examples thereof include mineral pigments such as clay, natural dye lakes such as madder lake and cochineal lake, azo pigments, and phthalocyanine pigments.

[0024] The content of the pigment in the spray hair colorant composition is not particularly limited, but is, for example, 0.1 to 15% by mass. The lower limit is preferably 0.5% by mass or more, and more preferably 1.0% by mass or more. The upper limit is preferably 10% by mass or less, and more preferably 8% by mass or less. When the pigment content is 0.1% by mass or more, the hair coloring effect can be sufficiently exhibited. When the pigment content is 15% by mass or less, the pigment dispersibility can be further improved.

[0025] <Cationic polymer> A cationic polymer is a polymer having a substituent that can be cationized, such as an amino group or an ammonium group. The cationic polymer of the present invention is used to improve the dispersibility of pigments in a spray-type hair color composition when mixed by shaking, and is particularly effective in improving the dispersibility of Red No. 202 among pigments when mixed by shaking.

[0026] In addition, the cationic polymer used in the present invention may be a commercially available product. The cationic polymer used in the present embodiment is not particularly limited, but examples thereof include cationic polysaccharides and cationic polymers containing structural units derived from cationic monomers. These cationic polymers may be used alone or in combination of two or more.

[0027] The cationic polysaccharides are cationic sugar derivatives in which cationic groups have been added to polysaccharides. Cationic sugar derivatives have a structure in which some of the hydroxyl groups contained in the sugars have been substituted with quaternary nitrogen-containing groups. A preferred quaternary nitrogen-containing group is a quaternary ammonium group. For example, cationic polysaccharides can be obtained by reacting a sugar with a quaternary ammonium salt such as a glycidyl trialkyl ammonium salt or a 3-halogeno-2-hydroxypropyl trialkyl ammonium salt to introduce quaternary ammonium groups into some of the hydroxyl groups of the sugar.

[0028] Examples of the cationic polysaccharides include cationized cellulose, cationized guar gum, cationized tara gum, cationized locust bean gum, cationized cassia, cationized fenugreek gum, and cationized starch.

[0029] The cationized cellulose is a cellulose-based polymer containing cationic groups. It is obtained by partially chemically bonding glycidyltrimethylammonium chloride or 3-chloro-2-hydroxypropyltrimethylammonium chloride to hydroxyethyl cellulose. Specific examples include polyquaternium-4 (hydroxyethyl cellulose dimethyldiallylammonium chloride) and polyquaternium-10 (O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride).

[0030] The cationized guar gum is a water-soluble polymer obtained by cationizing guar gum, a polysaccharide in which galactose and mannose are present in a ratio of 1:2, by converting the hydroxylmethyl and hydroxyl groups of the mannose in the main chain and the galactose in the side chain into quaternary ammonium groups. Specific examples include guar hydroxypropyltrimonium chloride and hydroxypropylguar hydroxypropyltrimonium chloride.

[0031] The cationized tara gum is a water-soluble polymer obtained by cationizing tara gum, a polysaccharide in which galactose and mannose are present in a ratio of 1:3. Specific examples include Caesalpinia spinosa hydroxypropyltrimonium chloride. The cationized locust bean gum is a water-soluble polymer obtained by cationizing and modifying locust bean gum, a polysaccharide in which galactose and mannose are present in a ratio of 1:4. Specific examples include locust bean hydroxypropyltrimonium chloride. The cationized cassia is a water-soluble polymer obtained by cationizing cassia gum, a polysaccharide in which galactose and mannose are present in a ratio of 1:5. Specific examples include cassia hydroxypropyltrimonium chloride. The cationized fenugreek gum is a water-soluble polymer obtained by cationizing fenugreek gum, a polysaccharide in which galactose and mannose are present in a 1:1 ratio. Specific examples include fenugreek hydroxypropyltrimonium chloride. The cationic starch is a polymer obtained by cationic modification of starch, and specific examples thereof include hydroxypropyltrimonium chloride starch.

[0032] Examples of cationic monomers in cationic polymers containing structural units derived from the above cationic monomers include dimethyldiallylammonium chloride, diethyldiallylammonium chloride, (meth)acrylamidopropyltrimethylammonium chloride, sulfate of dimethylaminoethyl diethyl (meth)acrylate (such as diethyl sulfate as the sulfate), 2-((meth)acryloyloxy)ethyltrimethylammonium chloride, (meth)acrylamidopropyltrimethylammonium chloride, ethyltrimethylammonium (meth)acrylate chloride, and (meth)acrylamidopropyllauryldimonium chloride. Here, (meth)acrylamido refers to acrylic acid amide, methacrylic acid amide, or a mixture of acrylic acid amide and methacrylic acid amide. (Meth)acrylic acid refers to acrylic acid, methacrylic acid, or a mixture of acrylic acid and methacrylic acid. (Meth)acryloyl refers to acryloyl group-containing, methacryloyl group-containing, or acryloyl group-containing and methacryloyl group-containing.

[0033] Examples of cationic polymers containing structural units derived from the above-mentioned cationic monomers include polydimethylmethylenepiperidinium chloride such as Polyquaternium-6, dimethyldiallylammonium chloride-acrylamide copolymers such as Polyquaternium-7, vinylpyrrolidone-N,N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate such as Polyquaternium-11, vinylpyrrolidone-methylvinylimidazolium copolymers such as Polyquaternium-16, and ethyl[(methacryloyloxy)ethyl]dimethylammonium ethyl sulfate-N,N-dimethylacrylamide-polyethylene glycol dimethacrylate copolymers such as Polyquaternium-52. Among the above-mentioned cationic polymers, cationic acrylic resins are preferred from the viewpoint of improving the dispersibility of Red No. 202.

[0034] The content of the cationic polymer in the present invention is not particularly limited, but is, for example, 0.01 to 10% by mass. The lower limit of the content is preferably 0.1% by mass or more, and more preferably 0.5% by mass or more. The upper limit of the content is preferably 5% by mass or less, and more preferably 3% by mass or less. This allows the cationic polymer to form a color paste integrated with the pigment, further improving the dispersibility of the pigment.

[0035] Cationic polymers improve the dispersibility of pigments when mixed by shaking, and are thought to be particularly effective for pigments that tend to be anionic. For example, Red No. 202 has the structure shown in formula (1), which contains phenolic hydroxyl groups. Because phenolic hydroxyl groups tend to become anions, Red No. 202 is thought to be prone to exhibiting anionic properties. This makes it easier for interactions with cationic polymers to occur, and it is thought that this interaction suppresses the aggregation of Red No. 202 particles, thereby improving the dispersibility of pigments such as Red No. 202 when mixed by shaking.

[0036] As mentioned above, it is presumed that the calcium contained in Red No. 202 interacts with other ingredients contained in the spray hair colorant composition, which may result in poorer dispersibility when mixed by shaking. However, since Red No. 202 also contains phenolic hydroxyl groups, it is likely to interact with the cationic polymer, and therefore it is presumed that the cationic polymer is particularly effective in improving the dispersibility of Red No. 202 when mixed by shaking.

[0037] In the above description, Red No. 202 was used as an example of a pigment for which the effect of improving dispersibility during shaking and mixing by a cationic polymer is likely to be apparent, but the pigment is not limited to Red No. 202. If the pigment has a structure that tends to be relatively anionic, such as one that contains a phenolic hydroxyl group, it is thought that the effect of improving dispersibility during shaking and mixing by a cationic polymer is likely to be apparent.

[0038] <Cationic acrylic resin> The cationic acrylic resin is a polymer obtained by polymerizing a monomer having a cationic functional group and a (meth)acryloyl group, or a copolymer of a monomer having a cationic functional group and a (meth)acryloyl group with another copolymerizable monomer. In the present invention, by using a cationic acrylic resin as the cationic polymer, the dispersibility of the pigment in the spray hair colorant composition can be further improved when the composition is mixed by shaking.

[0039] Examples of cationic functional groups include groups that form cations themselves, and amine and imine functional groups that do not form cations themselves but readily form cations upon binding with protons at near-neutral pH (pH 6 to 8). Examples include primary amino groups, secondary amino groups, tertiary amino groups, quaternary ammonium salts, imino groups (-NH- and =NH), amidino groups, imidino groups, hydrazino groups, and pyridyl groups.

[0040] Examples of the monomer having a cationic functional group and a (meth)acryloyl group include amino group-containing (meth)acrylic monomers. Examples of the amino group-containing (meth)acrylic monomer include aminoalkyl acrylates, aminoalkyl methacrylates, N-aminoalkyl acrylamides, N-aminoalkyl methacrylamides, and quaternary salts of the amino(meth)alkyl acrylates and N-aminoalkyl acrylamides or N-aminoalkyl acrylamides, which are quaternary salts of the amino(meth)alkyl acrylates with a halogenated methyl group, a halogenated ethyl group, a halogenated benzyl group, or the like, in which the halogen is chlorine, bromine, iodine, or the like.

[0041] Other copolymerizable monomers include unsaturated carboxylic acids such as acrylic acid, methacrylic acid, itaconic acid, and maleic acid, hydroxyl group-containing vinyls such as 2-hydroxyethyl acrylate, aromatic vinyls such as styrene, amides such as acrylamide, vinyl esters such as vinyl acetate, and vinylidene halides such as vinylidene chloride.

[0042] The cationic acrylic resin in the present invention is preferably a copolymer containing a compound having the structure of the following formula (2) or (3), from the viewpoint of improving the dispersibility of pigments, particularly the dispersibility of Red No. 202. It may also contain a compound having the structure of the following formula (4).

[0043] [ka] (where R 1 is hydrogen or a methyl group, and R 2 is a hydrocarbon group having 1 to 6 carbon atoms.

[0044] R in Equation (2) 2 The number of carbon atoms is preferably 1 to 4.

[0045] [ka] (where R 3is hydrogen or a methyl group. 4 is a hydrocarbon group having 1 to 6 carbon atoms. 5 is an alkyl group having 1 to 3 carbon atoms. 5 may be the same or different.)

[0046] R in Equation (3) 4 The number of carbon atoms is preferably 1 to 4.

[0047] [ka] (where R 6 is hydrogen or a methyl group. 7 and R 8 is a hydrocarbon group having 1 to 6 carbon atoms)

[0048] R in the above formula (4) 7 and R 8 The number of carbon atoms is preferably 1 to 4.

[0049] Among the copolymers of compounds having the structure shown in the above formula (2), (3) or the above formulas (2), (3) and (4), a butyl methacrylate-methacryloylethyltriammonium chloride copolymer or a butyl methacrylate-ethoxyethyl methacrylate-methacryloylethyltriammonium chloride copolymer is preferred, and a butyl methacrylate-ethoxyethyl methacrylate-methacryloylethyltriammonium chloride copolymer is particularly preferred.

[0050] Furthermore, as the cationic acrylic resin in the present invention, from the viewpoint of improving the dispersibility of pigments, particularly the dispersibility of Red No. 202, copolymers containing compounds having the structures of the above formula (3) and the following formula (5) are also preferred.

[0051] [ka]

[0052] As the copolymer of the compound having the structure shown in the above formulas (3) and (5), a vinylpyrrolidone-N,N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate solution is particularly preferred.

[0053] The content of the cationic acrylic resin in the present invention is not particularly limited, as with the cationic polymer described above, but is, for example, 0.01 to 10% by mass. The lower limit of the content is preferably 0.1% by mass or more, more preferably 0.5% by mass or more. The upper limit of the content is preferably 5% by mass or less, more preferably 3% by mass or less. This allows the resin to form a color paste integrated with the pigment, further improving the dispersibility of the pigment. In addition, the spray hair colorant composition can exhibit good covering power on hair, friction resistance that prevents color transfer even with slight friction against hair, and friction resistance (water resistance) when wet with water.

[0054] <Content ratio (B) / (A)> The ratio (B) / (A) of the content of the cationic polymer (B) to the content of the pigment (A) is 0.01 to 100. The lower limit of this ratio is preferably 0.03 or more, and more preferably 0.05 or more. The upper limit of this ratio is preferably 20 or less, and more preferably 10 or less. This can improve the dispersibility of the pigment in the spray hair colorant composition when it is mixed by shaking, and can also prevent clogging of the contents of the spray device.

[0055] <Other ingredients> In addition to the above components, the spray hair colorant composition of the present invention may contain the following components as needed. Examples of other ingredients include resins, surfactants, oily ingredients, organic solvents such as ethanol, isopropanol, ethylene glycol, ethyl cellosolve, butyl cellosolve, and methyl acetate, moisturizers such as glycerin, 1,3-butylene glycol, propylene glycol, polyethylene glycol, sodium pyrrolidonecarboxylate, sodium lactate, sorbitol, and hyaluronic acid, preservatives such as phenoxyethanol and sodium benzoate, antioxidants such as ascorbic acid and anhydrous sodium sulfite, fragrances, disinfectants, ultraviolet absorbers, animal extracts, and plant extracts.

[0056] <Resin> The present invention can contain a resin as another component. The type of resin is not particularly limited, but examples include amphoteric resins, anionic resins, and nonionic resins. One or more of these can be used in appropriate combination. The total resin content is not particularly limited, but is, for example, 0.1 to 15% by mass. The lower limit of the total content is preferably 0.5% by mass or more. The upper limit of the total content is preferably 10% by mass or less. This allows the spray hair colorant composition to achieve good covering power on hair, friction resistance that prevents color transfer even with slight friction against hair, and friction resistance (water resistance) when wet with water.

[0057] The amphoteric resin is a resin that contains both cations and anions in one molecule. The amphoteric resin is not particularly limited, but examples thereof include amphoteric acrylic polymer compounds. Specific examples of the amphoteric acrylic polymer include compounds obtained by copolymerizing dialkylaminoethyl methacrylate, dialkylaminoethyl acrylate, diacetone acrylamide, or the like with acrylic acid, methacrylic acid, alkyl acrylate esters, alkyl methacrylate esters, or the like, and amphoterizing the copolymer with halogenated acetic acid, and hydroxypropyl acrylate / butylaminoethyl methacrylate / octyl acrylate copolymers. Commercially available products include Mitsubishi Chemical Corporation's Yukaformer AM75-201, 202, 204, R205, R205S, 206, W, and WH, and National Starch's Amphomer.

[0058] The anionic resin is a resin that exhibits anionic electrical properties when dissolved in an aqueous solution. Examples of the anionic resin include, but are not limited to, vinyl acetate ether polymer compounds, acidic polyvinyl acetate polymer compounds, and acidic acrylic polymer compounds. Specific examples of the vinyl acetate ether polymer compounds include lower alkyl half esters of methyl vinyl ether / maleic anhydride copolymers. Commercially available products include GANTREZ ES-225, ES-335, and ES-425 from GAF. Specific examples of the acidic polyvinyl acetate polymer compounds include vinyl acetate / crotonic acid copolymers, vinyl acetate / crotonic acid / vinyl neodecanoate copolymers, vinyl acetate / crotonic acid / vinyl propionate copolymers, and vinyl acetate / N-vinyl-5-methyl-2-oxazoline copolymers. Commercially available products include BASF's Lubyset CA and CAP, National Starch's Resin 28-1310 and 28-2930, and Dow Chemical's Durex. Specific examples of the acidic acrylic polymer compound include copolymers of acrylic acid and / or methacrylic acid with alkyl acrylates and / or alkyl methacrylates, and copolymers of acrylic acid, alkyl acrylates, and N-alkylacrylamide. Commercially available products include Goh Chemical's Plussize L-53P, 53D, 7400, 7410, 7420, 7480, 53PB, and 8011, and BASF's Ultrahold 8.

[0059] The nonionic resin is a resin that does not become ions when dissolved in an aqueous solution. The nonionic resin is not particularly limited, but examples thereof include polyvinylpyrrolidone-based polymer compounds. Specific examples of the polyvinylpyrrolidone-based polymer compounds include polyvinylpyrrolidone, vinylpyrrolidone / vinyl acetate copolymers, polyvinylpyrrolidone / methacrylic acid / methacrylic acid ester copolymers, and vinylpyrrolidone / vinyl acetate / alkylaminoacrylate copolymers. Commercially available products include Luviscol K, VA, and VAP from BASF, and PVPX and PVP / VA from GAF.

[0060] From the viewpoint of strengthening the effect of the cationic polymer in improving the dispersibility of the pigment during shaking and mixing, the resin is preferably an amphoteric resin or an anionic resin. Furthermore, the amphoteric resin is preferably an amphoteric acrylic polymer compound, and the anionic resin is preferably an anionic acrylic polymer compound. This is because an amphoteric or anionic resin is likely to interact with the (A) cationic polymer, and this interaction strengthens the effect of the (A) cationic polymer in improving the dispersibility of the pigment during shaking and mixing.

[0061] <Surfactant> The present invention may contain a surfactant as another component. The type of surfactant is not particularly limited, but examples include nonionic surfactants (nonionic surfactants), anionic surfactants, cationic surfactants, and amphoteric surfactants. One or more of these can be used in appropriate combination. The surfactant content is not particularly limited, but is, for example, 0.01 to 10% by mass. The lower limit of the content is preferably 0.05% by mass or more. The upper limit of the content is preferably 5% by mass or less. This reduces stiffness when the spray hair colorant composition is used on hair, and provides good coverage and abrasion resistance that prevents color transfer even with slight friction against the hair. In the following description, POE represents a polyoxyethylene chain, POP represents a polyoxypropylene chain, and the number in parentheses following each represents the number of moles added. The number in parentheses following alkyl represents the number of carbon atoms in the fatty acid chain.

[0062] Examples of the nonionic surfactants include POE alkyl ethers, POE alkyl phenyl ethers, POE·POP alkyl ethers, POE sorbitan fatty acid esters, POE monofatty acid esters, POE glycerin fatty acid esters, polyglycerin fatty acid esters, monoglycerin fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, alkyl polyglucosides, etc. Specific examples of POE alkyl ethers include POE lauryl ether, POE cetyl ether, POE stearyl ether, POE behenyl ether, POE lanolin, POE phytosterol, etc. The number of repeating units of POE and POP is, for example, 2 to 100, and any of them can be used as long as they exhibit a surface-active effect.

[0063] The content of the nonionic surfactant in the spray hair colorant composition is not particularly limited, but is preferably 0.01 to 10% by mass. The lower limit is more preferably 0.03% by mass or more, and even more preferably 0.05% by mass or more. The upper limit is more preferably 7.5% by mass or less, and even more preferably 5% by mass or less.

[0064] Examples of the anionic surfactant include alkyl ether sulfates, POE alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfonic acid salts, N-acylamino acid surfactants, phosphoric acid mono- or diester surfactants, and sulfosuccinate esters. The counter ion of the anionic group of these surfactants may be, for example, any of sodium ion, potassium ion, and triethanolamine.

[0065] More specific examples include sodium lauryl sulfate, sodium myristyl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, cetyl sulfate, sodium stearyl sulfate, sodium POE lauryl ether sulfate, triethanolamine POE lauryl ether sulfate, ammonium POE lauryl ether sulfate, sodium POE stearyl ether sulfate, sodium stearoylmethyl taurate, triethanolamine dodecylbenzenesulfonate, sodium tetradecenesulfonate, sodium lauryl phosphate, POE lauryl ether phosphate and salts thereof, N-lauroyl glutamates (such as sodium lauroyl glutamate), N-lauroylmethyl-β-alanine salts, N-acylglycine salts, N-acyl glutamates, higher fatty acids such as lauric acid and myristic acid, and salts of these higher fatty acids, and one or more of these may be used.

[0066] The content of the anionic surfactant in the spray hair colorant composition is not particularly limited, but is preferably 0.01 to 10% by mass. The lower limit is more preferably 0.03% by mass or more, and even more preferably 0.05% by mass or more. The upper limit is more preferably 7.5% by mass or less, and even more preferably 5% by mass or less.

[0067] Examples of the cationic surfactant include alkyl quaternary ammonium salts such as monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, benzalkonium quaternary ammonium salts, and monoalkyl ether quaternary ammonium salts; amine salts such as alkylamine salts, fatty acid amide amine salts, ester-containing tertiary amine salts, and Arcobalen-type tertiary amine salts; cyclic quaternary ammonium salts such as alkylpyridinium salts and alkylisoquinolium salts; and benzethonium chloride.

[0068] Preferred are alkyl quaternary ammonium salts, more preferred are monoalkyl quaternary ammonium salts and dialkyl quaternary ammonium salts, and particularly preferred are monoalkyl quaternary ammonium salts.

[0069] From the viewpoint of formulation stability, examples of monoalkyl quaternary ammonium salts include lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, alkyl(16,18)trimethylammonium chloride, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium chloride, stearyltrimethylammonium bromide, behenyltrimethylammonium chloride, stearyltrimethylammonium saccharin, alkyl(28)trimethylammonium chloride, diPOE(2)oleylmethylammonium chloride, diPOEstearylmethylammonium chloride, POE(1)POP(25)diethylmethylammonium chloride, POPmethyldiethylammonium chloride, methacryloyloxyethyltrimethylammonium chloride, behenyltrimethylammonium methylsulfate, etc. Particularly preferred are stearyltrimethylammonium chloride, alkyl(16,18)trimethylammonium chloride, cetyltrimethylammonium chloride, and behenyltrimethylammonium chloride.

[0070] Examples of dialkyl quaternary ammonium salts include dialkyl(12-15)dimethylammonium chloride, dialkyl(12-18)dimethylammonium chloride, dialkyl(14-18)dimethylammonium chloride, dicocoyldimethylammonium chloride, dicetyldimethylammonium chloride, distearyldimethylammonium chloride, and isostearyllauryldimethylammonium chloride.

[0071] The content of the cationic surfactant in the spray hair colorant composition is not particularly limited, but is preferably 0.01 to 10% by mass. The lower limit is more preferably 0.03% by mass or more, and even more preferably 0.05% by mass or more. The upper limit is more preferably 7.5% by mass or less, and even more preferably 5% by mass or less.

[0072] Examples of the amphoteric surfactant include amino acid type amphoteric surfactants and betaine type amphoteric surfactants.

[0073] Specific examples of amino acid type amphoteric surfactants include glycine type amphoteric surfactants, aminopropionic acid type amphoteric surfactants, etc. Specific examples of glycine type amphoteric surfactants include N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium (sodium lauroamphoacetate), 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, undecylhydroxyethylimidazolinium betaine sodium, alkyldiaminoethylglycine hydrochloride, N-cocoacyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, N-cocoacyl-N'-carboxyethoxyethyl-N'-carboxyethylethylenediamine disodium, N-cocoacyl-N'-carboxymethoxyethyl-N'-carboxymethylethylenediamine disodium, lauryldiaminoethylglycine sodium, palmacyl-N-carboxyethyl-N-hydroxyethylethylenediamine sodium, etc. Specific examples of the aminopropionic acid type amphoteric surfactant include sodium laurylaminopropionate, sodium laurylaminodipropionate, and triethanolamine laurylaminopropionate.

[0074] Specific examples of betaine-type amphoteric surfactants include aminoacetic acid betaine-type amphoteric surfactants and sulfobetaine-type amphoteric surfactants. Specific examples of aminoacetic acid betaine-type amphoteric surfactants include coconut oil alkyl betaine, lauryl dimethyl aminoacetic acid betaine, myristyl dimethyl aminoacetic acid betaine, stearyl dimethyl aminoacetic acid betaine, sodium stearyl dimethyl betaine, coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, ricinoleic acid amidopropyl betaine, and stearyl dihydroxyethyl betaine. Specific examples of sulfobetaine-type amphoteric surfactants include lauryl hydroxysulfobetaine.

[0075] <Oily ingredients> Examples of oily components include higher alcohols, fats and oils, waxes, hydrocarbons, higher fatty acids, esters, silicone oils, fluorine oils, etc. One or more of these oily components can be selected and used.

[0076] Examples of higher alcohols include cetyl alcohol (cetanol), stearyl alcohol, cetostearyl alcohol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, arachyl alcohol, behenyl alcohol, lauryl alcohol, myristyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, phytosterol, phytostanol, cholesterol, cholestanol, lanosterol, and ergosterol.

[0077] The fats and oils are triglycerides, i.e. triesters of fatty acids and glycerin. Examples include olive oil, rosehip oil, camellia oil, shea butter, macadamia nut oil, almond oil, tea seed oil, camellia oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, beef tallow, cocoa butter, corn oil, peanut oil, rapeseed oil, rice bran oil, rice germ oil, wheat germ oil, Job's tears oil, grape seed oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, mink oil, egg yolk oil, etc.

[0078] Waxes are esters of higher fatty acids and higher alcohols, and examples include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, spermaceti, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, privet wax, kapok wax, and shellac wax.

[0079] Hydrocarbons are compounds consisting of carbon and hydrogen, such as liquid paraffin, paraffin, microcrystalline wax, petrolatum, isoparaffins, ozokerite, ceresin, polyethylene, α-olefin oligomer, polybutene, synthetic squalane, squalene, hydrogenated squalane, limonene, and turpentine.

[0080] Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid.

[0081] Esters are compounds obtained by dehydration reaction of fatty acids with alcohols. Examples include diisopropyl adipate, 2-hexyldecyl adipate, isopropyl myristate, myristyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, diisopropyl sebacate, isopropyl palmitate, 2-ethylhexyl palmitate, cetyl ethylhexanoate, butyl stearate, isocetyl isostearate, hexyl laurate, decyl oleate, C10-30 fatty acids (cholesteryl / lanosteryl), lauryl lactate, octyldodecyl lactate, lanolin acetate, dipentaerythritol fatty acid esters, N-alkyl glycol monoisostearate, and lanolin derivatives.

[0082] Silicone oils are synthetic polymers in which silicon and oxygen atoms with organic groups are alternately linked by chemical bonds. Examples include dimethylpolysiloxane (INCI name: dimethicone), dimethylpolysiloxane with hydroxyl terminal groups (INCI name: dimethiconol), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, polyether-modified silicone, highly polymerized silicone with an average degree of polymerization of 650 to 10,000, amino-modified silicone, betaine-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, mercapto-modified silicone, carboxy-modified silicone, and fluorine-modified silicone.

[0083] Of the above, examples of amino-modified silicones include aminopropylmethylsiloxane-dimethylsiloxane copolymer (INCI name: aminopropyl dimethicone), aminoethylaminopropylsiloxane-dimethylsiloxane copolymer (INCI name: amodimethicone), and aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer (INCI name: trimethylsilylamodimethicone).

[0084] The content of the oily component in the spray hair colorant composition of the present invention is not particularly limited, but is preferably 0.1 to 30% by mass. The lower limit is more preferably 0.02% by mass or more, and even more preferably 0.5% by mass or more. The upper limit is more preferably 20% by mass or less, and even more preferably 10% by mass or less. [Example]

[0085] EXAMPLES The present invention will be explained in more detail below by showing examples of the spray hair colorant composition of the present invention, but the present invention is not limited to these examples in any way. The following commercially available products were used for the components shown in the table. Butyl methacrylate, ethoxyethyl methacrylate, methacryloylethyltriammonium chloride copolymer: "Plus Size L-514" manufactured by Goo Chemical Industry Co., Ltd. N-Methacryloyloxyethyl N,N-dimethylammonium-α-N-methylcarboxybetaine-methacrylic acid alkyl ester copolymer: "Yukaformer 202" manufactured by Mitsubishi Chemical Corporation Alkyl acrylate, alkyl methacrylate, diacetone acrylamide, and methacrylic acid copolymer: "Plus Size L-53" manufactured by Goo Chemical Industry Co., Ltd.

[0086] Spray hair colorant compositions of the present invention according to Examples and Comparative Examples were obtained with the contents shown in Tables 1 and 2. These compositions were evaluated for ease of dispersibility, covering power, lack of stiffness, water resistance, friction resistance, quick-drying ability, and washability according to the following evaluation criteria. The results are shown in Tables 1 and 2. Unless otherwise specified, the human hair bundles used in the evaluation tests of the present invention are BM-WA (100% white hair: manufactured by Beaulux) hair bundles in order to confirm whether the test hair bundles have been uniformly colored.

[0087] <Method for evaluating dispersibility> The dispersibility was evaluated by the following test. 30 g of the spray hair colorant compositions according to the Examples and Comparative Examples were filled into a pressure bottle, left to stand in a thermostatic chamber at 40°C for one month, and then manually shaken up and down 10 times. The dispersion state of the pigment was visually evaluated by 10 panelists. The results are shown as the average of the scores of the 10 panelists. <Evaluation criteria> 5: All pigments are uniformly dispersed and there are no agglomerates (very good) 4: Almost uniformly dispersed, no pigment agglomerates (good) 3: Dispersed, but slight pigment agglomerations are observed (normal) 2: Poor dispersion, pigment agglomerates visible (bad) 1: No dispersion at all, pigment agglomerates are visible (very bad)

[0088] <Method for evaluating covering power> The covering power was evaluated by a sensory test using a tuft of hair. The spray hair colorant compositions according to the Examples and Comparative Examples were applied to 1 g of a gray hair bundle so that 0.1 g of each composition adhered to the hair, and the hair was thoroughly dried. The covering power was evaluated visually by 10 panelists. The results were expressed as the average of the scores of the 10 panelists. <Evaluation criteria> 5: The underlying gray hair color was completely concealed. 4: The color of the underlying gray hair was slightly affected, but it was concealed. 3: The color of the underlying gray hair is slightly affected, but it is mostly hidden. 2: Due to the influence of the underlying gray hair, it lacks some hiding power. 1: The color of the underlying gray hair was barely concealed, resulting in uneven color.

[0089] <How to evaluate stiffness> The lack of stiffness was evaluated by a sensory test using a bundle of hair. The spray hair colorant compositions of the Examples and Comparative Examples were applied to 1 g of hair bundle so that 0.1 g of each composition adhered to the hair, and then the hair was thoroughly dried. A sensory test was then conducted by 10 panelists to evaluate the smoothness of the hair by touching the hair with their hands. The results are shown as the average scores of the 10 panelists. <Evaluation criteria> 5: Hair does not feel rough. 4: Hair is almost free of roughness. 3: Hair is less rough. 2: Hair is slightly rough. 1: Hair is very rough.

[0090] <Water resistance evaluation method> The spray hair colorant composition was applied so that 0.1 g adhered to 1 g of hair bundle, and then thoroughly dried. The hair bundle was then sprayed with water using a spray bottle to wet it, and the wet hair bundle was sandwiched between white cloths. Ten panelists visually observed and evaluated the color transfer to the cloth. The results are shown as the average of the scores of the 10 panelists. <Evaluation criteria> 5: No color transfer at all. 4: There is some color transfer. 3: There is color transfer. 2: There is considerable color transfer. 1: There is severe color transfer

[0091] <Method for evaluating abrasion resistance> The abrasion resistance was evaluated by a sensory test using a bundle of hair. The spray hair colorant compositions according to the Examples and Comparative Examples were applied to 1 g of hair bundle so that 0.1 g of each composition adhered to the hair, and then the hair bundle was thoroughly dried. The hair bundle was then rubbed with a white cloth, and color transfer was visually observed and evaluated by 10 panelists. The results are shown as the average of the scores of the 10 panelists. <Evaluation criteria> 5: No color transfer at all. 4: There is some color transfer. 3: There is color transfer. 2: There is considerable color transfer. 1: There is severe color transfer

[0092] <How to evaluate quick-drying properties> The quick-drying property was evaluated by a sensory test using a bundle of hair. The spray hair colorant compositions of the Examples and Comparative Examples were applied to 1 g of hair bundle so that 0.1 g of each was attached, and after drying for 3 minutes, the hair bundle was immediately rubbed with a white cloth, and the color transfer to the cloth was visually observed and evaluated by 10 panelists. The results are shown as the average of the scores of the 10 panelists. <Evaluation criteria> 5: No color transfer at all. 4: There is some color transfer. 3: There is color transfer. 2: There is considerable color transfer. 1: There is severe color transfer

[0093] <How to evaluate cleaning performance> The cleansing properties were evaluated by a sensory test using a tuft of hair. The spray-type hair colorant compositions according to the Examples and Comparative Examples were applied so that 0.1 g of each was attached to 1 g of hair bundle, and then the hair was thoroughly dried. After washing twice with Bigen Treatment Shampoo, the remaining color was visually evaluated by 10 panelists. The results are shown as the average scores of the 10 panelists. <Evaluation criteria> 5: No color remains at all. 4: There is some color remaining. 3: There is residual color. 2: There is a lot of color remaining. 1: Severe color residue

[0094] [Table 1]

[0095] [Table 2]

[0096] As shown in Tables 1 and 2, the spray hair colorant compositions of the present invention in the examples were evaluated for ease of dispersibility as 3 to 5, which was a good result.

[0097] Example 1, Example 4, and Comparative Example 1 differ only in whether or not they contain (B) a cationic polymer; otherwise, the formulations are the same. Comparing the evaluation results of Example 1, Example 4, and Comparative Example 1, the only difference is dispersibility, with Comparative Example 1 scoring "1," while Example 1 scored "5," and Example 4 scored "4," showing favorable results. This demonstrates that (B) the cationic polymer improves the dispersibility of the pigment when mixed by shaking.

[0098] Comparing Example 2 and Comparative Example 2, the difference between them is whether or not they contain (B) cationic polymer. Comparative Example 2 received a dispersibility rating of "2," while Example 2 received a rating of "5," a favorable result. While the total amount of (A) pigment contained is the same among Examples 1, 2, Comparative Examples 1, and 2, Examples 1 and 1 contain Red No. 202 as the (A) pigment, while Examples 2 and 2 do not. Comparing Comparative Example 1 and Comparative Example 2, Comparative Example 1, which contains Red No. 202, has poorer dispersibility, but Examples 1 and 2 receive similar dispersibility ratings. These findings demonstrate that Red No. 202 has poorer dispersibility during shaking and mixing than other pigments, and that the (B) cationic polymer effectively overcomes the poor dispersibility of Red No. 202.

[0099] Comparing Example 1 and Example 4, although different compounds are used as the (A) cationic polymer, both have good evaluations of dispersibility. This demonstrates that various compounds can be used as the (A) cationic polymer in the spray hair color composition of the present invention. Furthermore, since the evaluation of dispersibility for Example 1 was "5" while that for Example 4 was "4," it is clear that butyl methacrylate-ethoxyethyl methacrylate-methacryloylethyltriammonium chloride copolymer is more preferable as the (A) cationic polymer.

[0100] Comparing Examples 1, 3, and 10, Examples 1 and 10 differ from Example 3 in that they contain an amphoteric resin or an anionic resin. Examples 1 and 10 were evaluated as having better dispersibility, indicating that the amphoteric resin or anionic resin can further improve the dispersibility of the (A) pigment during shaking and mixing.

[0101] Comparing Examples 5 to 9, it was found that the ease of dispersibility improved as the mass ratio (B / A) of the content of the cationic polymer (B) to the pigment (A) increased. [Industrial Applicability]

[0102] The present invention provides a spray hair colorant composition that improves the dispersibility of the pigment when the pigment is used and can be applied to hair with a well-balanced pigment color tone, thereby enabling hair to be colored with a uniform and well-balanced color tone.

Claims

1. (A) a pigment; and (B) a cationic polymer, the (B) cationic polymer is at least one of a cationic polysaccharide and a cationic polymer containing a structural unit derived from a cationic monomer, The spray hair colorant composition, wherein the cationic monomer is at least one selected from the group consisting of (meth)acrylamidopropyltrimethylammonium chloride, sulfate of dimethylaminoethyl diethyl (meth)acrylate, 2-((meth)acryloyloxy)ethyltrimethylammonium chloride, (meth)acrylamidopropyltrimethylammonium chloride, ethyltrimethylammonium (meth)acrylate chloride, and (meth)acrylamidopropyllauryldimonium chloride.

2. 2. The spray hair coloring composition according to claim 1, wherein the pigment (A) contains Red No.

202.

3. 3. The spray hair coloring composition according to claim 1, wherein the cationic polymer (B) is a cationic acrylic resin.

4. The spray hair colorant composition according to any one of claims 1 to 3, wherein the ratio (B) / (A) of the content of the cationic polymer (B) to the content of the pigment (A) is 0.03 to 20.

5. A composition comprising (A) a pigment and (B) a cationic polymer, A spray hair colorant composition, wherein the (B) cationic polymer is a cationic acrylic resin.

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