JP2006232721A - Hair treatment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair treatment depressed in an irritative odor, having excellent decolorizing power, and having good storage stability of a first agent. <P>SOLUTION: This hair treatment is used by mixing the first agent and a second agent containing hydrogen peroxide, wherein the first agent comprises an emulsion containing a component (A) comprising ammonia and/or an alkanolamine in an amount of 0.1-10 mass% based on a total amount of the first agent, a component (B) a carbonate salt and/or a hydrogencarbonate in an amount of 3-10 mass% based on the total amount of the first agent, a component (C) comprising a 12-18C alcohol, a component (D) comprising a 20-30C alcohol, a component (E) comprising a nonionic surfactant in an amount of 1-5 mass% based on the total amount of the first agent, and a component (F) comprising water and satisfies conditions (i) to (iii) as follows: (i) a total content of the component (C) and the component (D) is 5-20 mass% based on the total amount of the first agent; (ii) a mass ratio of [the component (C)/the component (D)] is 4-40: and (iii) a mass ratio of [(the component (C) + the component (D))/the component (B)] is 1-4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hair treatment agent used by mixing a first agent and a second agent containing hydrogen peroxide, in particular, a depigmenting agent or a hair dye for hair.

  For the decolorization and dyeing of hair, a two-component decoloring agent and a permanent hair dye comprising a first agent containing an alkaline agent and a second agent containing hydrogen peroxide as an oxidizing agent are widely used. The first alkaline agent is blended in order to enhance the decolorization and dyeing effect, and to activate the action of the oxidizing agent to advance the oxidative degradation of the melanin granules in the hair, thereby obtaining a bright color tone. Sufficient depigmentation is required to decolorize / dye hair to a lighter color than the ground color, but since hair decolorization generally depends on the amount of alkali, when used for such purposes, In particular, a sufficient amount of alkali is required.

  In order to show good decoloring property as an alkali agent, ammonia is generally used (Patent Document 1). However, there is a problem that an irritating odor is exhibited when the alkali agent is used at a high concentration.

In addition, as a method for reducing the ammonia concentration and reducing the irritating odor while maintaining a sufficient alkali amount in the first agent, it is proposed that the first agent is a combined system of ammonia and ammonium salt (carbonate). (Patent Document 2).
However, when the first agent is an emulsion in which ammonia and carbonate are used in combination, particularly an oil-in-water emulsion, there is a problem that the storage stability of the first agent with time decreases.
JP 2001-206829 A JP-A-1-165514

  An object of the present invention is to provide a hair treatment agent that suppresses an irritating odor, has an excellent decolorizing power, and has good storage stability of the first agent.

The present invention is a hair treatment agent used by mixing a first agent and a second agent containing hydrogen peroxide, and the first agent is an emulsion containing the following components (A) to (F): A hair treatment agent that satisfies the following conditions (i) to (iii) is provided.
[Ingredients contained in the first agent]
Component (A) Ammonia and / or alkanolamine is 0.1 to 10% by mass in the first agent
Component (B) carbonate and / or bicarbonate is 3 to 10% by mass in the first agent
Component (C) Alcohol component having 12 to 18 carbon atoms (D) Alcohol component having 20 to 30 carbon atoms (E) Nonionic surfactant is 1 to 5% by mass in the first agent
Component (F) Water [Conditions satisfied by the first agent]
(i) The total content of component (C) and component (D) is 5 to 20% by mass in the first agent
(ii) Mass ratio [component (C) / component (D)] of 4 to 40
(iii) Mass ratio [(component (C) + component (D)) / component (B)] is 1 to 4

  The first agent in the hair treatment agent of the present invention, that is, the depigmenting agent or hair coloring agent, shows good storage stability even when a carbonate and / or bicarbonate is added, and the first agent and the second agent. The hair treatment agent mixed with has an excellent decoloring property or hair dyeing property, and can also relieve an irritating odor.

[First hair treatment agent]
The first agent used in the hair treatment agent of the present invention does not contain an oxidative dye intermediate or a direct dye when the hair treatment agent is a depigmenting agent, and an oxidative dye intermediate or a direct dye when it is a hair dye. contains.

  By using the component (A) and the component (B) together as the alkali agent used in the first agent, a buffer system is formed in weak alkalinity, and the amount of alkali can be increased without excessively increasing the pH of the first agent. For this reason, the pungent odor by ammonia can be suppressed.

  Although ammonia may be used as the component (A), an alkanolamine may be used instead of ammonia or in combination with ammonia. Examples of the alkanolamine include monoethanolamine, monoisopropanolamine, alkanolamines such as 2-amino-2-methylpropanol and 2-aminobutanol, and guanidine, among which monoethanolamine is preferable.

  In order not to excessively increase the salt concentration or ionic strength of the first agent as the component (B), it is preferable to use ammonium carbonate and / or ammonium bicarbonate. Among these, ammonium bicarbonate is preferable from the viewpoint of suppressing the irritating odor.

  Component (A), which is an alkaline agent in the first agent, is contained in an amount of 0.1 to 10% by mass, preferably 6 to 10% by mass, from the viewpoint of sufficient decolorization and hair dyeing effect. The component (B) is contained in the first agent in an amount of 3 to 10% by mass, preferably 4 to 8% by mass, from the viewpoint of sufficient decolorization and hair dyeing effect.

  In this case, the mass ratio [component (A) / component (B)] is preferably 0.1 to 2 and more preferably 0.1 to 1 from the viewpoint of stabilizing the emulsification of the first agent and reducing the irritating odor. More preferably, it is 0.1-0.5.

  The first agent is an emulsion containing an oily component, water and a nonionic surfactant. In order to facilitate washing with water, an oil-in-water emulsion is preferred. Further, in order to suppress ammonia odor and improve storage stability, a creamy state, that is, a state that does not exhibit fluidity when allowed to stand and flows when loaded, is preferable.

  As an oil component, an alcohol having 12 to 18 carbon atoms (component (C)) and an alcohol having 20 to 30 carbon atoms (component (D)) are essential components, and fats and oils (triglycerides), hydrocarbons, higher fatty acids and the like are optional components. Can be used as Here, component (C) and component (D) are added to impart a good feel to the hair, adjust the viscosity of the entire first agent, improve the storage stability of the first agent, or make it creamy. Combined. Examples of the component (C) include oleyl alcohol, stearyl alcohol, cetyl alcohol, myristyl alcohol and the like, and oleyl alcohol and stearyl alcohol are particularly preferable. Examples of the component (D) include octyldodecanol and behenyl alcohol, and behenyl alcohol is particularly preferable. The total content of component (C) and component (D) is 5 to 20% by weight in the first agent (condition (i) that the first agent satisfies), more preferably 5 to 15% by weight.

  The mass ratio [component (C) / component (D)] needs to be 4 to 40 (condition (ii) satisfied by the first agent) from the viewpoint of good hardness of the emulsion of the first agent. More preferably, it is 10-30.

  Further, the mass ratio [(component (C) + component (D)) / component (B)] is 1 to 4 (condition (iii) satisfied by the first agent) from the viewpoint of emulsion stability that the first agent does not separate. ), But preferably 1 to 3.

  A nonionic surfactant (component (E)) is required to emulsify the components (C) and (D) of the first agent. Content of a component (E) is 1-5 mass% in a 1st agent, Preferably it is 2-4 mass%. In this case, a nonionic surfactant (component (E-1)) having an HLB of 10 or less and a nonionic surfactant (E-2) having an HLB of more than 10 are used in combination for stabilization of emulsion and thickening. Is preferred. Here, the HLB value is obtained by the Griffin method.

  In this case, the mass ratio [component (E-1) / (E-2)] is preferably from 0.1 to 0.9, more preferably from 0.3 to 0, from the viewpoint of emulsion stability that the first agent does not separate. .6.

  Examples of the component (E-1) include polyoxyethylene alkyl ether having a HLB of 10 or less, polyoxyethylene polypropylene alkyl ether, alkyl glyceryl ether, alkyl glyceryl pentaerythritoyl ether, alkyl diglyceryl ether, alkyl triglyceryl ether, and the like.

  As component (E-2), polyoxyethylene alkyl ether such as polyoxyethylene octyldodecyl ether, polyoxyethylene oleyl ether, polyoxyethylene tridecyl ether, polyoxyethylene lauryl ether, polyoxyethylene isostearyl ether; Examples of the alkylglycoside and the like having an HLB of more than 10 and preferably an HLB of more than 10 and 20 or less.

  Further, the pH of the first agent is preferably 8 to 13 at 25 ° C., more preferably 9 to 11. As 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, hydrochlorides such as monoethanolamine hydrochloride, potassium dihydrogen phosphate, phosphorus Examples thereof include phosphates such as disodium oxyhydrogen.

  Furthermore, the hair treatment agent of the present invention contains an oxidative dye intermediate or a direct dye in the first agent and can be used as a hair dye.

  As such an oxidative dye intermediate, a known developer and coupling substance which are usually used in hair dyes can be used. Examples of the developer include paraphenylenediamine, toluene-2,5-diamine, N, N-bis (2-hydroxyethyl) -paraphenylenediamine, 2- (2-hydroxyethyl) -paraphenylenediamine, and paraaminophenol. , Orthoaminophenol and salts thereof.

  Examples of coupling substances include metaphenylenediamine, 2,4-diaminophenoxyethanol, metaaminophenol, 2-methyl-5-aminophenol, 2-methyl-5- (2-hydroxyethylamino) phenol, resorcin, Examples include 1-naphthol, 2,6-diaminopyridine, and salts thereof.

  Two or more kinds of the developer and the coupling substance may be used in combination, and the content thereof is preferably 0.01 to 5% by mass, particularly 0.1 to 4% by mass in the total composition. .

  Moreover, as a direct dye, an acidic dye, a basic dye, a disperse dye, a reactive dye, or the like can be used, and an oxidation dye intermediate and a direct dye can be used in combination.

  Examples of basic dyes include Basic Blue 99 (CI56059), Basic Brown 16 (CI12250), Basic Brown 17 (CI12251), Basic Red 51, Basic Red 76 (CI12245), Basic Orange 31, and Basic Yellow 57 (CI12719), basic yellow 87, basic dyes containing a quaternized nitrogen atom in the side chain of the aromatic ring, as described in JP-B-58-2204, JP-A-9-18832, and the like; Examples thereof include basic dyes described in JP-T-10-502946, JP-A-10-182379, JP-A-11-349457, and the like.

  Examples of direct dyes other than acid dyes and basic dyes include 2-nitroparaphenylenediamine.

  In addition to the above-mentioned components, components usually used in the cosmetic field can be added to the hair treatment agent of the present invention depending on the purpose. Examples of such optional components include natural or synthetic polymer compounds, silicone derivatives, amino acid derivatives, protein derivatives, preservatives, antioxidants, plant extracts, vitamins, UV absorbers, pH adjusters, and fragrances. Can be mentioned.

[Second hair treatment agent]
The second agent contains hydrogen peroxide. When the first agent is creamy, it is preferable that the second agent is a liquid having water as a base (carrier) because mixing with the first agent is easy. The hydrogen peroxide concentration of the second agent is preferably 1 to 9% by mass, more preferably 3 to 6% by mass in the second agent, from the viewpoint of sufficient decolorization / dyeing effect. The pH of the second agent is preferably 2 to 5 at 25 ° C., more preferably 3 to 4.

  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. Such optional ingredients include higher alcohols, surfactants, hydrocarbons, silicones, media, animal and vegetable oils, higher fatty acids, natural or synthetic polymers, ethers, protein derivatives, hydrolyzed proteins. Amino acids, preservatives, chelating agents, stabilizers, antioxidants, animal and plant extracts, herbal extracts, vitamins, fragrances, and UV absorbers.

[Hair treatment agent]
The mixing ratio of the first agent and the second agent of the hair treatment agent of the present invention is preferably such that the mass ratio of the first agent: second agent is in the range of 1: 0.5 to 1: 3, more preferably 1: 1 to 1. 1: 2 is preferred.

  The hydrogen peroxide concentration in the mixed solution of the first agent and the second agent is immediately after mixing, preferably 1 to 6% by mass, more preferably 2 to 5% by mass.

  The pH of the hair treatment agent in which the first agent and the second agent are mixed is preferably 8 to 13, more preferably 8 to 12, and still more preferably 8 to 11 in terms of decolorization / dyeing effect.

  When the hair treatment agent of the present invention is used, in addition to the first agent and the second agent, a powdery oxidizer comprising a persulfate granulated product is further added as a third agent, and when mixed, the decoloring effect becomes stronger. can do. Here, as the persulfate, ammonium persulfate, sodium persulfate, potassium persulfate, or the like can be used. Two or more of these persulfates may be used in combination, and the content thereof is preferably 1 to 30% by mass, more preferably 3 to 15% by mass in the total composition.

  The first agent in the hair dye composition of the present invention is preferably an oil-in-water emulsion, but the second agent is also preferably an oil-in-water emulsion. These 1st agents and 2nd agents can be made into emulsion, cream form, etc., for example, and can be made into the dosage form put in the tube container, the bottle container, and the aerosol double container.

  In order to decolorize or dye the hair using the hair treatment agent of the present invention, for example, after mixing the first agent and the second agent (the third agent as necessary) of the hair treatment agent of the present invention, It may be applied to the hair at a temperature of 45 ° C., rinsed with water after a working time of 5 to 50 minutes, preferably 10 to 30 minutes, then shampooed and then dried.

  About the decoloring property of the agent which prepared the 1st agent shown in Table 1, and the 2nd agent shown in Table 2, and mixed the emulsion stability and pH of this 1st agent, and the 1st agent and the 2nd agent, it is the following method According to the evaluation. The results are shown in Table 1.

[Emulsion stability over time]
The change in appearance when the first agent was stored at 50 ° C. for 1 month was observed with the naked eye and judged according to the following criteria.
○: The emulsified state is maintained (separation is not observed visually)
X: The emulsified state is not maintained (separation is observed visually)

[Decolorization]
As hair dyeing conditions, the first agent: second agent = 1: 1.5 mixed agent is applied to the hair (black hair 100%) at a mass ratio (agent: hair) = 1: 1. Allow to stand at 25-35 ° C for 30 minutes, then rinse with about 40 ° C water. Next, the hair is washed with water using a Ravenous designing shampoo (Kao Corporation, containing 10% by weight of an anionic surfactant), rinsed with rinse, rinsed with water, and then wiped with a towel. Thereafter, it is naturally dried or dried with a dryer.

For evaluation of decolorization, b value of hair before and after treatment was measured by Minolta CR-400, and decolorization was evaluated by Δb value.
Δb = (b value of hair after treatment) − (b value of hair before treatment)
The greater the Δb value, the better the decolorization.

[PH]
The pH (25 ° C.) was measured with a pH meter manufactured by HORIBA.

Claims (8)

A hair treatment agent used by mixing a first agent and a second agent containing hydrogen peroxide, wherein the first agent is an emulsion containing the following components (A) to (F), and the following conditions: A hair treatment agent satisfying (i) to (iii).
[Ingredients contained in the first agent]
Component (A) Ammonia and / or alkanolamine is 0.1 to 10% by mass in the first agent
Component (B) carbonate and / or bicarbonate is 3 to 10% by mass in the first agent
Component (C) Alcohol component having 12 to 18 carbon atoms (D) Alcohol component having 20 to 30 carbon atoms (E) Nonionic surfactant is 1 to 5% by mass in the first agent
Component (F) Water [Conditions satisfied by the first agent]
(i) The total content of component (C) and component (D) is 5 to 20% by mass in the first agent
(ii) Mass ratio [component (C) / component (D)] of 4 to 40
(iii) Mass ratio [(component (C) + component (D)) / component (B)] is 1 to 4   The hair cosmetic according to claim 1, wherein the first agent is an oil-in-water emulsion.   The component (E) contains a nonionic surfactant (component (E-1)) having an HLB of 10 or less and a nonionic surfactant (component (E-2)) having an HLB exceeding 10. 2. The hair treatment agent according to 2.   The hair treatment agent according to claim 3, wherein the mass ratio [component (E-1) / component (E-2)] is 0.1 to 0.9.   The hair treatment agent according to any one of claims 1 to 4, wherein the component (B) is ammonium hydrogen carbonate.   The hair treatment agent according to any one of claims 1 to 5, wherein the mass ratio [component (A) / component (B)] is 0.1 to 2.   The hair treatment agent according to any one of claims 1 to 6, wherein the pH of the first agent is 8 to 13.   The hair treatment agent according to any one of claims 1 to 7, wherein the hair treatment agent is a hair dye or a decoloring agent.