Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/10—Preparations for permanently dyeing the hair
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/04—Dispersions; Emulsions
  • A61K8/046—Aerosols; Foams
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/86—Polyethers

Definitions

• the present invention relates to a two-component hair dye.
• Patent Document 1 a two-component hair bleaching agent or a mixture of two-component hair dyes is discharged in a foam form from a non-aerosol type former container.
• This hair bleaching agent or hair coloring agent can be applied to hair easily and evenly even by unskilled people by discharging the mixture of the first and second agents in a foam form from a non-aerosol type former container. And color unevenness does not occur in the finish. Since it can be applied easily, skills such as blocking and mirroring are not required, and the time required for hair dyeing is much shorter than before. In this way, it has far superior performance as compared with the conventional one, so it is being supported by a wide range of customers regardless of gender and age group. For this reason, various products have been developed to meet the needs of many customers.
• the two-component hair bleaching agent or the two-component hair dye described in Patent Document 1 has an extremely low viscosity of 1 to 300 mPa ⁇ s compared to the conventional hair dye mixture, Moreover, this mixed solution must be discharged in a foam form from a non-aerosol type former container. Therefore, it is necessary to have basic performance as a decoloring agent or hair dye in a constraint that the storage stability, which tends to be lowered, must be ensured to be discharged from a non-aerosol foamer container. is there.
• the type of decoloring agent or hair dye that discharges the liquid mixture in a foam form from a non-aerosol type former container is required to be a liquid or cream type decoloring agent or hair dye that has been known for a long time. Since the physical properties and the like are completely different, the formulations used in these conventional dosage forms cannot be used as they are. For example, in order to improve the feel after decoloring or dyeing, liquid or cream dosage forms may contain a large amount of components such as silicone and higher alcohols. Such formulations are used for non-aerosol foam containers. Even if it is simply diverted, it cannot be discharged as good foam. Therefore, the formulation of the two-component hair dye using a non-aerosol foam container needs to be examined for a non-aerosol foam container.
• the present invention comprises a first agent containing an alkali agent, a second agent containing hydrogen peroxide, and a non-aerosol foamer container that discharges a mixed liquid of the first agent and the second agent in the form of foam.
• the agent contains the following components (A) to (C), the mass ratio (A) / (B) of the component (A) to the component (B) in the first agent is 0.3 or less, and a mixed solution A two-component hair dye having a viscosity of 1 to 300 mPa ⁇ s.
• the present inventors have sought to give a rich color tone to the hair and have a better feel, blending a specific oxidation dye in the first agent at a high concentration, and a cationic polymer Among them, a polymer or copolymer in which the ratio of diallyldimethyl quaternary ammonium salt monomer, which gives a better feel, is blended and a storage stability test is conducted under conditions (low temperature) that are more severe than before. I noticed a slight turbidity. Although this turbidity disappeared when the temperature was returned to room temperature, it was found that when the mixture was made using the first agent once turbid, the foam quality dropped slightly when the foam was discharged from the non-aerosol foamer container.
• the present invention relates to a non-aerosol type two-component hair dye, wherein the first agent contains a specific oxidation dye at a high concentration, and the ratio of the diallyldimethyl quaternary ammonium salt monomer is a certain level or more.
• the first agent contains a specific oxidation dye at a high concentration
• the ratio of the diallyldimethyl quaternary ammonium salt monomer is a certain level or more.
• an excellent feel is obtained, and despite these ingredients coexisting, excellent stability even at storage below freezing point is achieved.
• Even after storage at such a low temperature it is excellent in foam discharge from non-aerosol foamer containers, and also has the basic performance required as a hair dye, unique to non-aerosol two-component hair dyes
• the present invention relates to a two-component hair dye that can achieve the above effect.
• the present inventors have found that the above problems can be solved by using a polyoxyalkylene type nonionic surfactant in the non-aerosol type two-component hair dye as described above.
• the first agent contains an alkali agent.
• Alkaline agents such as ammonia and salts thereof; alkanolamines such as monoethanolamine, isopropanolamine, 2-amino-2-methylpropanol and 2-aminobutanol and salts thereof; alkanediamines such as 1,3-propanediamine and the like Salts: carbonates such as guanidine carbonate, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate and the like.
• These alkaline agents may be used in combination of two or more, and the content thereof is 0.05 to 0.05% in the mixture from the viewpoint of sufficient hair dyeing / bleaching effect and reduction of hair damage and scalp irritation. 15% by mass is preferable, further 0.1 to 10% by mass, and further 0.2 to 5% by mass is preferable.
• the content of hydrogen peroxide in the second agent is preferably 1 to 9% by mass, more preferably 3 to 6% by mass, and the content of hydrogen peroxide in the mixed solution of the first agent and the second agent is 1 It is preferably 6% by mass, more preferably 2-5% by mass.
• the pH of the second agent is preferably 2 to 6, and more preferably 2.5 to 4 in order to suppress the decomposition of hydrogen peroxide.
• the first agent contains resorcin as component (A).
• the content of resorcin is 0.9 to 1.7% by mass, preferably 1 to 1.6% by mass, and more preferably 1.1 to 1.5% by mass in the first agent from the viewpoint of imparting a rich color to the hair.
• the first agent contains a polyoxyalkylene type nonionic surfactant as component (B).
• Polyoxyalkylene type nonionic surfactants include polyoxyalkylene alkyl ether, polyoxyalkylene fatty acid ester, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene sorbit fatty acid ester, polyoxyalkylene glycerin fatty acid ester, polyoxyalkylene alkylphenyl Examples include ether, polyoxyalkylene (cured) castor oil, and the like.
• polyoxyalkylene alkyl ethers and polyoxyalkylene fatty acid esters are preferred.
• component (B) is preferably 3 to 30% by mass, more preferably 4 to 20% by mass, and further preferably 5 to 10% by mass in the first agent.
• the polyoxyalkylene type nonionic surfactant may be further contained in the second agent in addition to the above-mentioned concentration contained in the first agent.
• the mass ratio (A) / (B) of the component (A) to the component (B) in the first agent is required to be 0.3 or less from the viewpoint of good storage stability at low temperatures, and is preferably Is from 0.03 to 0.25, more preferably from 0.05 to 0.2.
• (C) polymer or copolymer having a molar fraction of diallyldimethyl quaternary ammonium salt monomer of 70% or more
• the polymer or copolymer of component (C) requires that the molar fraction of the diallyldimethyl quaternary ammonium salt monomer be 70% or more from the viewpoint of obtaining a better feel, and the molar fraction is 80%. % Or more, more preferably 90% or more.
• the other monomer is not limited as long as it is a copolymerizable monomer, but preferably contains acrylic acid or acrylamide. Examples of such a polymer or copolymer include commercially available products such as Marcoat 100 (molar fraction 100%), Marcoat 295 (molar fraction 95%) (Nalco).
• component (C) may precipitate upon storage at below freezing point due to interaction with component (A). Therefore, from the viewpoint of obtaining an excellent feel and preventing such precipitation, the content of the component (C) is 0.001 to 4% by mass, further 0.01 to 3% by mass, and further 0.1% in the first agent. ⁇ 2% by weight is preferred. Further, the polymer or copolymer of the component (C) may be further contained in the second agent in addition to the concentration contained in the first agent.
• the first agent can contain p-aminophenol in addition to the resorcin of component (A) in order to produce a reddish color by dyeing as an oxidation dye intermediate.
• the content of paraaminophenol is 0 to 0.8% in the first agent from the viewpoint of storage stability below freezing point and discharging the foam of the mixed solution with a good quality using the first agent that has been stored.
• % By mass is preferable, more preferably 0.05 to 0.7% by mass, and further preferably 0.1 to 0.6% by mass.
• the mixed liquid of the first agent and the second agent can further contain an N-acyl amino acid salt, an N-acyl-N-alkyl amino acid salt, or an ether carboxylate as the component (E).
• This component (E) has a shampoo fastness by the interaction of the component (C) and the complex formed when the mixture of the first agent and the second agent is diluted with water covers the hair surface. It is expected to improve.
• examples of the amino acid residue of the N-acyl amino acid salt include glutamic acid and aspartic acid
• examples of the amino acid residue of the N-acyl-N-alkyl amino acid salt include glutamic acid, glycine, and ⁇ -alanine. It is done.
• examples of the alkyl group of the N-acyl-N-alkyl amino acid salt include methyl, ethyl, propyl, and isopropyl groups.
• examples of the acyl group include lauroyl, myristoyl, and palmitoyl groups.
• these salts include sodium, potassium, lithium, ethanolamine, diethanolamine, and triethanolamine (hereinafter abbreviated as TEA). Can be mentioned.
• N-acyl amino acids include N-lauroyl glutamic acid, N-myristoyl glutamic acid, N-cocoyl glutamic acid, and the like.
• N-acyl-N-alkyl amino acids include N-lauroyl-N- Examples include isopropylglycine, N-lauroyl sarcosine, N-myristoyl sarcosine, N-palmitoyl sarcosine, N-lauroyl-N-methyl- ⁇ -alanine, and the like.
• ether carboxylates examples include polyglyceryl alkyl ether acetates and ether acetates represented by the following general formula (1).
• R represents a linear or branched alkyl group or alkenyl group having 7 to 19 carbon atoms
• Z represents —O— or —CONH—
• X represents a hydrogen atom, an alkali metal, triethanolamine or Represents ammonium
• m represents a number from 1 to 20.
• ether acetate those having 11 to 15 carbon atoms in R are preferable.
• m is preferably 3 to 15, and more preferably 6 to 12.
• the neutralization degree is preferably 60 to 120%, and the counter ion X is preferably an alkali metal, particularly potassium.
• the counter ion X is preferably an alkali metal, particularly potassium.
• ether acetates include polyoxyethylene tridecyl ether acetate and polyoxyethylene lauryl ether acetate.
• salts include sodium salt and potassium salt.
• the content of the component (E) in the mixed solution of the first agent and the second agent is preferably 0.5 to 5% by mass, more preferably 0.7 to 4.5% by mass, and further preferably 1 to 3.5% by mass.
• the N-acyl amino acid salt, N-acyl-N-alkyl amino acid salt, or ether carboxylate of component (E) may be included in either the first agent or the second agent.
• the ratio of component (E) to component (C) in the mixture of the first agent and the second agent is such that the contents exist stably when the first agent and the second agent are mixed.
• the equivalent ratio (anion / cation) of the anion site of component (E) and the cation site of component (C) is adjusted to a value greater than 1. preferable. Further, it is preferable that the ratio is adjusted to 1.1 to 20, more preferably 1.2 to 10.
• the two-component hair dye of the present invention can contain an oxidation dye intermediate or a direct dye other than the component (A) resorcin and the component (D) paraaminophenol in the first agent.
• oxidation dye intermediate As the oxidation dye intermediate, known precursors and couplers usually used in hair dyes can be used.
• the precursor include paraphenylenediamine, toluene-2,5-diamine, 2-chloro-paraphenylenediamine, N-methoxyethyl-paraphenylenediamine, N, N-bis (2-hydroxyethyl) -paraphenylenediamine, 2- (2-hydroxyethyl) -paraphenylenediamine, 2,6-dimethyl-paraphenylenediamine, 4,4'-diaminodiphenylamine, 1,3-bis (N- (2-hydroxyethyl) -N- (4 -Aminophenyl) amino) -2-propanol, PEG-3,3,2'-paraphenylenediamine, paramethylaminophenol, 3-methyl-4-aminophenol, 2-aminomethyl-4-aminophenol, 2- (2-hydroxyethylamin
• couplers examples include metaphenylenediamine, 2,4-diaminophenoxyethanol, 2-amino-4- (2-hydroxyethylamino) anisole, 2,4-diamino-5-methylphenetole, and 2,4-diamino.
• Two or more precursors and couplers may be used in combination, and the content of each of the precursor and coupler is 0.01 to 5 in the mixed solution as a total amount other than the resorcin of component (A) and paraaminophenol of component (D).
• the mass is preferably 0.1% to 4% by mass.
• Direct dye examples include acid dyes, nitro dyes, disperse dyes, and basic dyes.
• acid dyes include Blue No. 1, Purple No. 401, Black No. 401, Orange No. 205, Red No. 227, Red No. 106, Yellow No.
• nitro dyes include 2-nitro -p-phenylenediamine, 2-amino-6-chloro-4-nitrophenol, 3-nitro-p-hydroxyethylaminophenol, 4-nitro-o-phenylenediamine, 4-amino-3-nitrophenol, 4- Hydroxypropylamino-3-nitrophenol, HC Blue No.2, HC Orange No.1, HC Red No.1, HC Yellow No.2, HC Yellow No.4, HC Yellow No.5, HC Red No.3 N, N-bis- (2-hydroxyethyl) -2-nitro-p-phenylenediamine and the like, and disperse dyes include Disperse Violet 1, Disperse Blue 1, Disperse Black 9 and the like.
• Basic dyes such as Basic Blue 99 and Basic Kuburaun 16, Basic Brown 17, Basic Red 76, Basic Red 51, Basic Yellow 57, Basic Yellow 87, Basic Orange 31, and the like.
• Two or more direct dyes may be used in combination, or may be used in combination with an oxidation dye intermediate.
• the content thereof is preferably 0.001 to 5% by mass, more preferably 0.01 to 3% by mass in the mixed solution.
• the two-component hair dye of the present invention has good storage stability, and bubbles are easily formed by mixing the air and the hair cosmetic by the foam discharge means of the former container, and the foam is stable.
• either 1st agent, 2nd agent, or both can contain surfactant other than a component (B) and a component (E) further.
• Nonionic surfactant other than component (B) examples include alkyl polyglucoside and alkyl glyceryl ether.
• alkyl polyglucoside those in which the alkyl group has 8 to 18 carbon atoms, more preferably 8 to 14 carbon atoms, and further 9 to 11 carbon atoms are preferable, and those in which the alkyl group is linear are preferable.
• the average condensation degree of glucoside is preferably 1 to 5, and more preferably 1 to 2.
• alkyl glyceryl ether those in which the alkyl group has 8 to 18 carbon atoms, more preferably 8 to 12 carbon atoms, are preferred, and those in which the alkyl group is branched are preferred.
• Two or more nonionic surfactants other than these components (B) can be used in combination, and the content of the first agent and the second agent in the mixed solution is preferably 0.1 to 5% by mass, and more preferably 0.5 It is preferably 4% by mass, more preferably 1-3% by mass.
• anionic surfactant As anionic surfactants other than the component (E), as anionic surfactants, sulfate surfactants such as alkyl sulfates and alkyl ether sulfates; fatty acid salts, alkyl succinates or alkenyl succinate salts, alkyls Carboxylic acid surfactants such as ether carboxylates and fatty acid amide ether acetates; phosphate ester surfactants such as alkyl phosphates and alkyl ether phosphates; sulfosuccinates, isethionates, taurines, alkylbenzenesulfones Anionic surfactants such as sulfonic acid surfactants such as acid, ⁇ -olefin sulfonic acid and alkane sulfonic acid can be mentioned.
• alkyl sulfates and polyoxyalkylene alkyl sulfates are preferred.
• the alkyl group preferably has 10 to 24 carbon atoms, more preferably 12 to 18 carbon atoms, and the alkyl group is linear. Those are preferred.
• polyoxyalkylene alkyl sulfates, more preferably polyoxyethylene alkyl sulfates are preferred, and those having an average addition mole number of oxyethylene groups of 1 to 10, more preferably 2 to 5 are preferred.
• cationic surfactant mono long chain alkyl quaternary ammonium salts are preferable, and specific examples thereof include cetrimonium chloride, steartrimonium chloride, behentrimonium chloride, stearalkonium chloride, benzalkonium chloride and the like. Stearyltrimonium chloride and behentrimonium chloride are more preferable.
• Commercially available cationic surfactants include Coatamine 86W, 86P Conc, 60W, D2345P (above, manufactured by Kao), Nikkor CA-2580 (manufactured by Nippon Surfactant Kogyo Co., Ltd.).
• Amphoteric surfactants include carbobetaines, amidebetaines, sulfobetaines, hydroxysulfobetaines, amidesulfobetaines, phosphobetaines, imidazo having 8 to 24 carbon atoms, alkyl groups, alkenyl groups or acyl groups. Examples thereof include linium-based surfactants, and among them, carbobetaine-based surfactants and sulfobetaine-based surfactants are preferable.
• Preferred amphoteric surfactants include lauric acid amidopropyl betaine, coconut oil fatty acid amidopropyl betaine, lauryldimethylaminoacetic acid betaine, lauryl hydroxysulfobetaine and the like.
• Anionic surfactants, cationic surfactants and amphoteric surfactants other than these components (E) can be used in combination of two or more, and the content of the first agent and the second agent in the mixed solution is From the viewpoint of not affecting the interaction between the component (E) and the component (E), 0 to 1% by mass is preferable, 0 to 0.8% by mass, and further 0 to 0.6% by mass is preferable.
• the two-component hair dye of the present invention can further contain an oil from the viewpoint of stabilizing the foam of the liquid mixture to be discharged.
• oils include hydrocarbons such as squalene, squalane, liquid paraffin, liquid isoparaffin, cycloparaffin; glycerides such as castor oil, cacao oil, mink oil, avocado oil, olive oil; beeswax, whale wax, lanolin, Waxes such as carnauba wax; isopropyl palmitate, isopropyl myristate, octyldodecyl myristate, hexyl laurate, cetyl lactate, propylene glycol monostearate, oleyl oleate, hexadecyl 2-ethylhexanoate, isononyl isononanoate, tridecyl isononanoate Esters such as capric acid, lauric acid, myristic acid, palmitic acid
• the content of the oil agent in the mixed solution of the first agent and the second agent is preferably 0.01 to 3% by mass, more preferably 0.03 to 2.5% by mass, and further preferably 0.05 to 2% by mass.
• the two-component hair dye of the present invention preferably contains no silicone in the mixed solution of the first agent and the second agent from the viewpoint that the discharged foam can be maintained for a long time.
• silicones can be further contained within a certain range. Examples of silicones include dimethylpolysiloxane, methylphenylpolysiloxane, polyether-modified silicone, amino-modified silicone, oxazoline-modified silicone elastomer, and the like, and emulsions in which these are dispersed in water using a surfactant.
• polyether-modified silicones, amino-modified silicones, and emulsions thereof are preferable because they can be stably dispersed in water without using a thickener.
• the polyether-modified silicone includes terminal-modified and side-chain-modified types such as a pendant type (comb type), a both-end modified type, and a one-end modified type.
• modified silicones include dimethylsiloxane / methyl (polyoxyethylene) siloxane copolymer, dimethylsiloxane / methyl (polyoxypropylene) siloxane copolymer, dimethylsiloxane / methyl (polyoxyethylene / polyoxypropylene) siloxane.
• a copolymer etc. are mentioned.
• the polyether-modified silicone those having an HLB of 10 or more, and further having an HLB of 10 to 18 are preferable from the viewpoint of compatibility with water.
• HLB is based on the value obtained from the cloud number (cloud number: an index correlated with HLB and applied to ether type nonionic surfactants).
• the amino-modified silicone is not particularly limited as long as it has an amino group or an ammonium group, but amodimethicone is preferable.
• silicones When silicones are added to the mixture of the first and second agents, the content of silicones allows the foam to smoothly fit into the hair without impairing foaming properties, and has a high conditioning effect on the hair.
• it In order to impart, it is preferably 2% by mass or less, more preferably 0.005 to 1% by mass, and further preferably 0.01 to 0.5% by mass.
• organic solvents include lower alcohols such as ethanol and 2-propanol, aromatic alcohols such as benzyl alcohol and benzyloxyethanol, polyols such as propylene glycol, 1,3-butanediol, diethylene glycol, and glycerin, ethyl cellosolve, Examples thereof include cellosolves such as butyl cellosolve and benzyl cellosolve, and carbitols such as ethyl carbitol and butyl carbitol.
• lower alcohols such as ethanol and 2-propanol
• aromatic alcohols such as benzyl alcohol and benzyloxyethanol
• polyols such as propylene glycol, 1,3-butanediol, diethylene glycol, and glycerin
• ethyl cellosolve examples thereof include cellosolves such as butyl cellosolve and benzyl cellosolve, and carbitols such as ethy
• optional ingredients In addition to the above components, other components that are usually used as cosmetic raw materials can be added to the composition of the present invention.
• optional ingredients include animal and vegetable oils and fats, natural or synthetic polymers, ethers, protein derivatives, hydrolyzed proteins, amino acids, preservatives, chelating agents, stabilizers, antioxidants, plant extracts, Examples include herbal extracts, vitamins, fragrances, and UV absorbers.
• the pH (25 ° C.) of the composition of the present invention is 8 to 12, more preferably 9 to 11, more preferably 9 to 10 at the time of use (during mixing) from the viewpoint of decolorization / hair dyeing effect and skin irritation. preferable.
• the pH adjuster in addition to the above alkaline agents, inorganic acids such as hydrochloric acid and phosphoric acid, organic acids such as citric acid, glycolic acid and lactic acid, phosphorous such as dipotassium dihydrogen phosphate, disodium monohydrogen phosphate, etc. Examples include acid salts.
• the viscosity (25 ° C.) of the first agent is preferably 1 to 50 mPa ⁇ s, more preferably 3 to 40 mPa ⁇ s, still more preferably 5 to 30 mPa ⁇ s.
• the viscosity (25 ° C.) of the second agent is preferably 1 to 300 mPa ⁇ s, more preferably 3 to 200 mPa ⁇ s, still more preferably 5 to 100 mPa ⁇ s.
• the viscosity (25 ° C.) of the mixed solution of the first agent and the second agent is 1 to 300 mPa ⁇ s, preferably 5 to 200 mPa ⁇ s, more preferably 10 to 100 mPa ⁇ s.
• the viscosity here is 25 ° C., using a B-type rotational viscometer, using rotor No. 1, the rotational speed is 60 rpm when the measurement target is 100 mPa ⁇ s or less, 30 rpm when 100 to 200 mPa ⁇ s, In case of 200mPa ⁇ s or more, measure at 12rpm.
• the measurement is performed in order from the measurement with the largest number of rotations, and the measurement is completed when the measurement can be performed without shaking the display, and the subsequent measurement with the smaller number of rotations is not performed. Note that the measurement is performed in a constant temperature bath at 25 ° C., the measurement is performed immediately after mixing the first agent and the second agent, and the temperature change due to reaction heat is ignored.
• the viscosity of the mixed solution of the first agent and the second agent By adjusting the viscosity of the mixed solution of the first agent and the second agent to be in the above range, it is possible to realize a foam volume that is easy to apply, and to prevent dripping after the mixed solution is applied to the hair. In addition to being able to suppress, it becomes easy to squeeze when discharging bubbles with a squeeze foamer or the like.
• a water-soluble solvent such as ethanol may be added, or the content and type of surfactants, polyols, higher alcohols, and the like may be appropriately adjusted. .
• the gas / liquid mixing ratio of air and liquid mixture by the foam discharge means of the former container is preferably 7 to 40 mL / g, more preferably 15 to 30 mL / g from the viewpoint of ease of application of the agent to the hair and ease of application. preferable.
• the gas-liquid mixing ratio here is a value measured as follows.
• the gas-liquid mixing ratio is determined by measuring the weight and volume of the foam discharged at 25 ° C. Put 100g of the liquid mixture into a squeeze foamer container (Daiwa Seisakusha, volume 210mL, mesh roughness (mesh) is 150 mesh per mixing chamber (150 mesh per inch (25.4mm)), tip 200 mesh) From the time when the remaining amount is 80 g, 20 g of foam is discharged into a 1000 mL measuring cylinder and the volume of the foam is measured 1 minute after the start of discharge. The gas-liquid mixing ratio (mL / g) is obtained by dividing the volume (mL) of the discharged foam by the weight of 20 g.
• the former container is a non-aerosol type container, and is used for mixing the liquid mixture of the first agent and the second agent with air without using a propellant and discharging it in the form of foam. .
• the former container an effect of preventing scattering of the discharged agent can be obtained.
• non-aerosol type containers can manufacture products at a lower cost than aerosol type containers and do not require a high-pressure gas propellant, so that products can be handled more safely in distribution.
• a known pump former container having a foam discharge means, a squeeze foam container, an electric frother, a pressure accumulating pump former container, or the like can be used. More specifically, for example, food and containers (vol.35, No.10, p588-593 (1994); vol.35, No.11, p624-627 (1994); vol.36, No.3, p154-158 (1995)) Pump former E3 type, F2 type (above, Daiwa Steel Co., Ltd.), squeeze foamer (Daiwa Steel Co., Ltd.), electric whisk (Matsushita Electric Works), air spray for Mar (Air Spray International).
• a pump former container and a squeeze foamer container are preferable because they are inexpensive and easy to use.
• a pump former container or a squeeze foamer container has a foam-generating part such as a net, and when the liquid mixture of one agent and two agents is dried and solidified to cause clogging, bubbles are generated at the next discharge. It is preferable to have a thin-walled net because the solidified material can be immediately dissolved by this flow to eliminate clogging.
• the mesh of the net is preferably 50 to 280 mesh, more preferably 90 to 250 mesh, and further preferably 130 to 220 mesh.
• the mesh means the number of eyes per inch.
• creamy foam can be generated.
• nylon, polyester, etc. can be illustrated preferably.
• the former container used in the two-component hair dye of the present invention is provided with at least one, preferably a plurality of such nets, particularly two in view of economy, foam stability, etc. It is preferable to do.
• the parts that come into contact with the contents are made of a material that does not corrode with alkali and hydrogen peroxide and is permeable to oxygen generated by the decomposition of hydrogen peroxide. It is preferable.
• the first agent or the second agent is filled in a container separate from the former container, and both are used at the time of use.
• the agent may be transferred to the former container and mixed, but one agent is filled into the former container, the other agent is filled into a separate container, and the other agent is transferred into the former container at the time of use.
• the second agent is a gas-permeable container, particularly an oxygen-permeable material (for example, polyethylene) in order to prevent the pressure in the container from rising due to oxygen generated by the decomposition of hydrogen peroxide. It is preferable to fill a former container consisting of
• the first agent needs to use a container that does not easily transmit oxygen.
• the foamy liquid mixture discharged from the container may be applied directly to the hair, or may be applied to the hair using a tool such as a hand or a brush. From the viewpoint of preventing the agent from splashing and dripping, it is more preferable to apply it to the hair after taking it once in a hand (with gloves).
• the time of foaming again may be after the foam has completely disappeared, in the middle of disappearance of the foam, or before the applied foam changes. Or it may be in the middle of application, even after it completes application to the whole range which wants to apply foam.
• Foaming again may be performed once continuously or may be repeated a plurality of times intermittently.
• Examples 1 to 9 and Comparative Examples 1 to 5 The 1st agent of the compounding composition (mass%) shown in Table 1 and the 2nd agent of the following prescription were prepared, and each was enclosed with the container.
• the first agent and the second agent have a mixing ratio (mass ratio) of 1: 1.5, a squeeze foamer (Daiwa Seisakusho, volume 210 mL, mesh roughness is 150 mesh mixing chamber, 200 mesh tip, air inlet channel
• the total opening area of the narrowest part is 0.27 mm 2 and the inner diameter of the dip tube is ⁇ 1.6 mm), and the mixture is discharged in the form of foam.
• the low-temperature stability was evaluated, and using the foam of the mixture of the first agent and the second agent discharged from the container, “appearance”, “hair dyeing”, “feel”, “average” “Dyeability” and “easy to apply” were evaluated.
• the viscosity of the mixed solution was about 20 mPa ⁇ s in both Examples and Comparative Examples. These evaluation items were evaluated by five professional panelists according to the following criteria, and the total score was shown in the lower column of the composition in Table 1.
• Second drug formulation (mass%; active amount) Stearyltrimethylammonium chloride 0.84 Polyoxyethylene (40) cetyl ether 0.55 Cetanol 0.88 Myristyl alcohol 0.25 Hydroxyethanediphosphonic acid 0.0402 Oxyquinoline sulfate (2) 0.040 Sodium hydroxide 0.01584 Hydrogen peroxide 5.7015 Water remaining
• the low temperature stability first agent was stored at ⁇ 5 ° C. for 1 week, and its appearance was evaluated according to the following criteria.
• Wig was cut levelness hair as trimmed by jaw line (views Lux Co., Nanba755s, was approximately 70g of the total mass of the hair), so pressing a foam 70g was discharged at 25 ° C. Applied and evenly blended. After standing for 30 minutes, the tress was washed with water, shampooed and dried. The leveling property was evaluated according to the following criteria. 2: No color unevenness, extremely uniform dyeing 1: Almost no color unevenness, uniform dyeing 0: Neither can be said -1: Some color unevenness is seen -2: Color unevenness is large

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