JPH092925A - Two agent-mixing type cosmetic - Google Patents

Abstract

PURPOSE: To obtain a stable two agent-mixing type cosmetic used by mixing the first agent with the second one just before used, and increasing the viscosity, when the agents are mixed and used. CONSTITUTION: The first agent contains an oxidation dyestuff as a main agent and other components such as an alkali agent, and has a pH of >=5. The second agent contains an oxidizing agent such as hydrogen peroxide and 0.005-5wt.% of a carboxyvinylpolymer, and has a pH of <=5. The first and second agents are mixed with each other so as to give a pH of >=5. The main agent for the cosmetic may be added to one or both of the first agent and the second agent. Since the pH of the second agent is <=5 before the use, the second agent is low in viscosity, does not adhere to the inner wall of the container, and can therefore effectively be used. When the first and second agents are mixed with each other to give the pH of >=5, the viscosity of the mixture increases due to the increased viscosity of the carboxyvinylpolymer. Thereby, the mixture easily stays at an application point on a human body, and does not limit the freedom of treatments. This two agent-mixing type cosmetic is used for a hair- dyeing agent, a hair-decoloring agent, a permanent wave agent, an epilation agent, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a first agent and a second agent immediately before use.
TECHNICAL FIELD The present invention relates to a two-component mixed type cosmetic composition which is used by mixing with an agent, and more particularly to a two-component mixed type cosmetic composition whose viscosity is increased by mixing the first agent and the second agent.

[0002]

2. Description of the Related Art Conventionally, in the field of cosmetics such as hair dye, a two-agent mixture consisting of a first agent and a second agent stored in separate containers, which are mixed just before use Style cosmetics are used. In such a two-component mixed cosmetic, the active ingredient as a cosmetic is formed by mixing the first agent and the second agent, and the active ingredient is unstable and is used immediately after the formation of the active ingredient. Often used when necessary. Such components include oxidative hair dyes, hair bleaching agents, enzyme compounding agents and the like.

In these two-component mixed type cosmetics, it is necessary to reduce the amount of residual cosmetics due to the adhesion to the inner wall of the container before mixing so as to facilitate the mixing operation of the first and second agents. Therefore, it is necessary to reduce the viscosity. Meanwhile, the first
When the agent and the second agent are mixed and applied to the human body, it is necessary for the mixed solution to have a predetermined viscosity so that the mixed solution is retained at the application site for a certain period of time. In order to prepare a cosmetic having a predetermined viscosity, it has been conventionally practiced to prepare one or both of the first agent and the second agent as an emulsifying agent or a viscous solution and obtain the predetermined viscosity even after mixing. Was there. In addition, one or both of the first agent and the second agent contain a surfactant, and the viscosity is also obtained by utilizing the viscosity development due to the concentration change due to the mixing of the surfactant solution. In addition, in the enzyme-containing lotion, the expression of viscosity by dissolution and dispersion of the powder substance was used.

Further, a two-component hair dyeing composition using a water-insoluble anionic polymer as a thickener is disclosed in JP-A-7-82122 and JP-A-7-82123. ing. In these, a water-insoluble anionic polymerization is mixed with an aqueous developing agent, and a cationic polymer is mixed with an alkaline aqueous lotion. Then, by mixing the aqueous developing agent and the alkaline aqueous lotion at the time of use, the anionic polymerization and the cationic polymer react with each other to form a gel.

[0005]

However, the first problem is to be solved.
When one or both of the second agent and the second agent are prepared as an emulsifying agent or a viscous liquid agent, a high viscosity develops before mixing, so that the drug adheres to the inner wall of the container and the cosmetic remains in the container. There is a problem that the amount is large and the mixing operation of the first agent and the second agent becomes difficult. Further, when utilizing the viscosity expression due to the change in the concentration of the surfactant solution, not only the obtained viscosity is not sufficient, but the viscosity is greatly influenced by the components in the formulation. For this reason, there is a problem in that it is difficult to design a satisfactory prescription that should exhibit the original function of the cosmetic because the ingredients are greatly restricted. Furthermore, when utilizing the viscosity development due to the dissolution and dispersion of the powder substance in the enzyme-containing lotion, there was a problem that a very slight increase in viscosity was obtained.

Further, in the oxidizing hair dyeing compounds described in JP-A-7-82122 and JP-A-7-82123, a gel is formed by a reaction between an anionic polymer as a thickener and a cationic polymer. Are formed. For this reason, if other anionic component is contained in the alkaline aqueous lotion, it reacts with this cationic polymer and the anionic polymer as a thickener cannot be thickened. Therefore, the components of the alkaline aqueous lotion are greatly restricted, and the degree of freedom in the formulation is limited. Further, this thickening substance, an anionic polymer, is not necessary for water. Therefore, when it is prepared as a cosmetic, it must be made into a dispersion system such as a suspension, and it is difficult to prepare a dosage form having excellent stability. Furthermore, when an anionic polymer is used as a thickener, a gel is formed, so that a desired viscosity according to the purpose cannot be realized, and the range of use is narrow.

The present invention has been made in view of the above-mentioned problems, and it has a low viscosity before use, is easy to handle, and exhibits sufficient viscosity to remain at the application site at the time of use, and is free of prescription. It is an object of the present invention to provide a two-component mixed type cosmetic composition capable of providing a stable cosmetic composition without impairing the degree.

[0008]

Means for Solving the Problems As a result of intensive studies to achieve the above-mentioned object, the present inventor has been able to solve the above-mentioned problems by adjusting the pH in a two-component cosmetic containing carboxyvinyl polymer. They have found that they can be solved and completed the present invention.

That is, the present invention comprises a first agent having a pH of 5 or more,
A two-component mixed type cosmetic comprising a second agent having a pH of 5 or less and containing a carboxyvinyl polymer, wherein the pH of a mixed solution of the first agent and the second agent is 5 or more, which is for cosmetics. The main agent is blended in one or both of the first agent and the second agent.

The first agent of the present invention has a pH of 5 or more, and the second agent
Any kind of mixture may be used as long as the pH of the mixed solution can be adjusted to 5 or more by mixing with the agent. The second agent of the present invention contains a carboxyvinyl polymer at a pH of 5 or less. Carboxyvinyl polymers usually show a rapid viscosity development around pH 5. That is, the viscosity is low when the pH is 5 or less, and the viscosity rapidly increases when the pH is 5 or more. The type of the carboxyvinyl polymer used in the present invention is not particularly limited as long as it has such characteristics. Examples of the carboxyvinyl polymer having such characteristics include Good Carbo's trade name "Carbopol" and Wako Pure Chemical Industries' trade name "Hibiswako".

The compounding amount of the carboxyvinyl polymer in the second agent can be appropriately changed depending on the type of preparation and the required viscosity. However, generally, when the content of carboxyvinyl polymer is 0.005% by weight or less, sufficient viscosity cannot be obtained, and when it is 5% by weight or more, low pH is obtained.
High viscosity will be expressed even in the range. Therefore, in general, it is preferably 0.005-5% by weight.

In the two-component mixed type cosmetic composition according to the present invention, since the pH of the second agent before mixing is 5 or less, the viscosity of the second agent is low. For this reason, the second agent does not adhere to the inner wall of the container, so that the second agent can be efficiently used and the mixing operation with the first agent is easy. Further, when the pH of the mixed solution becomes 5 or more due to the mixing of the first agent and the second agent, the viscosity rapidly increases due to the characteristics of the carboxyvinyl polymer. For this reason, the mixed liquid of the first agent and the second agent has a desired viscosity, and when applied to the human body, the mixed liquid is easily retained at the application site for a certain period of time.

The pH of the first agent and the second agent can be adjusted by using a pH adjusting agent generally used in the field of cosmetics. For example, as the acid, inorganic acids such as phosphoric acid and hydrochloric acid, organic acids such as citric acid, tartaric acid, malic acid,
Examples of the alkaline agent include alkanolamines such as ammonia, monoethanolamine, diethanolamine and triethanolamine, basic amino acids such as arginine and lysine, organic amines such as guanidine and 2-amino-2-methylpropane, sodium hydroxide, potassium hydroxide and the like. An inorganic alkali is used. Further, a buffer solution (eg, phosphoric acid-sodium salt of phosphoric acid) in combination with these salts is used.

The mixing ratio of the first agent and the second agent is not particularly limited as long as the effects and stability of the main ingredient for cosmetics and the carboxyvinyl polymer are not impaired. The two-component mixed type cosmetic composition according to the present invention can be used for various purposes, for example, as a hair dye, a depigmenting agent, a permanent agent, a depilatory agent, an appealing lotion and the like.

When used as a hair dye, the main agent is p
-Phenylenediamine, p-toluylenediamine, N-
Methyl-p-phenylenediamine, N, N-dimethyl-
p-phenylenediamine, N, N-diethyl-2 methyl
-P-phenylenediamine, N-ethyl-N- (hydro
Xylethyl) -p-phenylenediamine, chloro-p-
Phenylenediamine, N, N-bis- (2-hydroxy
Ethyl) -p-phenylenediamine, methoxy-p-phenyl
Phenylenediamine, 2,6-dichloro-p-phenylene
Diamine, 2-chloro-6-bromo-p-phenylenedi
Amine, 2-chloro-6-methyl-p-phenylenedia
Min, 6-methoxy-3-methyl-p-phenylenedia
Min, 2,5-diaminoanisole, N- (2-hydro
Xypropyl) -p-phenylenediamine, N-2-me
Toxylethyl-p-phenylenediamine, etc.
Seed NH_Two-Group, NHR₁-Group or N (R₁)_Two-Group
(R ₁Is an alkyl group having 1 to 4 carbon atoms or hydroxyal
P-diamines having a kill group); 2,5-dia
Minobiridin derivatives; para-aminophenol, 2-methyi
Lu-4-aminophenol, 3-methyl-4-aminophenol
Enol, 2-chloro-4-aminophenol, 3-ku
Lolo-4-aminophenol, 2,6-dimethyl-4-
Aminophenol-3,5-dimethyl-4-aminophen
Nole, 2,3-dimethyl 4-aminophenol, 2,
5-dimethyl-4-aminophenol, 2,4-diami
P-aminophenol such as nophenol and 5-aminosalicylic acid
Enols, o-aminophenols, o-phenylene
Diamines, α-naphthol, o-cresol, m-ku
Resol, 2,6-dimethylphenol, 2,5-dime
Chillphenol, 3,4-dimethylphenol, 3,5
-Dimethylphenol, benzcatechin, pyrogallo
1,5-dihydroxynaphthalene, 1,7-dihydr
Roxynaphthalene, 5-amino-2-methylpheno
, Hydroquinone, 2,4-diaminoanisole, m-
Toluylenediamine, 4-aminophenol, resorsi
, Resorcin monomethyl ether, m-phenylenedi
Amine, 1-phenyl-3-methyl-5-pyrazolone,
1-phenyl-3-amino-5-pyrazolone, 1-fe
Nyl-3,5-digeto-pyrazolidine, 1-methyl-7
-Dimethyl-amino-4-hydroxy-2-quinolone,
m-aminophenol, 4-chlororesorcin, 2-me
Tyrresorcin, 2,4-diaminophenoxyethanone
3,5-diamino-trifluoromethylbenzene,
2,4-diamino-fluorobenzene, 3,5-diamino
-Fluorobenzene, 2,4-diamino-6-hydroxy
Pyrimidine, 2,4,6-triaminopyrimidine, 2-
Amino-4,6-dihydroxypyrimidine, 4-amino
-2,6-dihydroxypyrimidine, 4,6-diamino
-2-Hydroxypyrimidine, 2,6-diaminopyrimidine
Oxidative dyes such as gin, 2-amino-4-nitropheno
2-amino-5-nitrophenol, nitro-hydrochloride
p-phenylenediamine, nitro-p-phenylenedia
Min, p-aminophenylsulfamic acid, p-nitro
-O-phenylenediamine, picramic acid, picramine
Sodium acid, picric acid, chrome brown RH, hema
Thein, nitro-p-phenylenediamine sulfate, p sulfate
-Nitro-o-phenylenediamine, sulfuric acid p-nitro-
m-phenylenediamine, 1-amino-4-methylami
Noanthraquinone, 1,4-diaminoanthraquinone:
Acid dyes Red No. 2, Red No. 3, Red No. 102, Red
Color 04, Red 105, Red 106, Yellow 4, Yellow
Color No. 5, Green No. 3, Blue No. 1, Blue No. 2, Red 201
No., Red 227, Red 230, Red 231, Red
No. 232, Orange No. 205, Orange No. 207, Yellow No. 202, Yellow
Color No. 203, Green No. 201, Green No. 204, Green 205
No. Blue No. 202 Blue No. 203 Blue No. 205
Color 201, Red 401, Red 502, Red 503
No., Red 504, Red 506, Orange 402, Yellow 4
02, yellow 403, yellow 406, yellow 407,
Green 401, Green 402, Purple 401, Black 401
No .; red 215, red 218, red, which are oil-soluble dyes
Color 225, Orange 201, Orange 206, Yellow 201,
Yellow No. 204, Green No. 202, Purple No. 201, Red 50
No. 1, red 505, orange 403, yellow 404, yellow
No. 405, Blue No. 403: Red 213 which is a basic dye
No., Red No. 214; and basic dyes from Arianor
Sienna Brown, Mahogany, Ma
dder Red, Steel Blue, Straw
 Direct dyes such as Yellow are used as decolorizing agents
When using, use an oxidizer such as hydrogen peroxide or bromate as a permanent agent.
When used as a ent wave agent and a depilatory agent Thioglyco
Acid, thioglycolate, cysteine, thioglycol
Glycerin ester, thioglycerin, thiosulfate
A reducing agent such as cysteamine can be used. these
The main ingredient for cosmetics is either the first agent or the second agent, or
Can be mixed in both.

In the present invention, one or both of the first agent and the second agent, other ingredients used in ordinary cosmetics, for example, alcohols such as fragrances, aromatic alcohols and polyhydric alcohols, and cationic interfaces. An activator, an antiseptic, an anti-UV agent, a sequestering agent, a reducing agent and the like can be appropriately added within a range that does not impair the effects of the present invention.

The two-component mixed type cosmetic composition according to the present invention can be used regardless of the dosage form such as liquid preparation and emulsifier. next,
As an example of the two-component cosmetic composition according to the present invention, a two-component hair dye containing an oxidative dye as a main component will be described.

This two-component hair dye has a pH of 5 or more, and a first agent containing an oxidative dye that develops color by oxidation and a pH of 5
It is composed of an oxidizing agent such as hydrogen peroxide and a second agent containing a carboxyvinyl polymer. Such a two-component hair dye is used by mixing the first and second agents when used. At this time, since the second agent has a low viscosity, the drug solution does not adhere to the inner wall of the container, so that the second agent can be used efficiently and the mixing operation with the first agent is easy.

By mixing the first and second agents, the pH of the mixture
When the value is 5 or more, the viscosity greatly increases due to the characteristics of the carboxyvinyl polymer. Therefore, the hair dye is easily held on the hair and can be prevented from dripping from the hair.

[0020]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited thereto. 1. Preparation of First Agent and Second Agent As a two-component mixed type cosmetic composition according to the present invention, a hair dye containing an oxidative dye as a main ingredient for cosmetics was prepared.

First, according to the formulation shown in Table 1, a first agent containing an oxidative dye was prepared, and Examples 1-1 and 1-3 were prepared.
And Comparative Example 2 were obtained. In this agent, in order to obtain a predetermined pH, the amount of ammonia water was adjusted.

[0022]

[Table 1]

Further, according to the formulation shown in Table 2, a second agent containing carboxyvinyl polymer as a thickening agent and hydrogen peroxide solution as an oxidizing agent was prepared, and Examples 2-1 to 2-3 and Comparative example 2 was obtained.

[0024]

[Table 2]

2. Preparation of First Agent / Second Agent Mixture, Viscosity Measurement and Hair Dyeing Test In order to confirm the viscosity increasing effect of the present invention, the first agent and the examples prepared as Examples 1-1 to 1-3 and Comparative Example 1 Two
-1 to 2-3 and the second agent prepared as Comparative Example 2 were mixed in equal amounts at room temperature, and the viscosity after mixing was measured. Measurement is B
This was performed using a type viscometer.

The results are shown in Table 3.

[0027]

[Table 3]

As is clear from Table 3, the pH of the mixed solution becomes 5 or more due to the mixing of the first agent and the second agent, and the viscosity sharply increases accordingly, and a sufficient viscosity as a hair dye is obtained. It was confirmed that it could be obtained. Further, when the obtained mixture of each Example was applied to human hair, it was confirmed to have an excellent hair dyeing effect.

From the above results, the effect of the present invention was clear.

[0030]

As is apparent from the above description, according to the two-component mixed type cosmetic composition of the present invention, it has a low viscosity before use and is easy to handle, and moreover, it thickens during use and easily stays at the application site. At the same time, there is an effect that it is possible to provide a stable cosmetic composition without impairing the degree of freedom in prescription.

Claims (4)

[Claims] 1. A first agent having a pH of 5 or more and a second agent having a pH of 5 or less and containing a carboxyvinyl polymer, wherein the pH of a mixed solution of the first agent and the second agent is 5 or more. A two-component mixed type cosmetic, which is a two-component mixed type cosmetic, wherein the main ingredient for cosmetics is blended with one or both of the first agent and the second agent. 2. The two-component mixed cosmetic according to claim 1, wherein the main ingredient for cosmetics is a dye. 3. The two-part mixed cosmetic composition according to claim 1, wherein the main ingredient for cosmetics is an oxidative dye contained in the first agent, and the second agent contains an oxidant. . 4. The two-component mixed cosmetic according to claim 3, wherein the first agent contains an alkaline agent.