JPH11286421A - Two-pack mixing cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-pack mixing cosmetic such as two-pack hair dye having low viscosity before use to enable easy handling, increasing the viscosity in use to fix the cosmetic to the applied part, keeping the freedom of preparation and having high stability. SOLUTION: This cosmetic is composed of a 1st agent having a pH of >=7 and a viscosity of <=3,000 cPs and containing a carboxyvinyl polymer or a modified carboxyvinyl polymer together with a lower alcohol and a higher fatty acid and a 2nd agent having a pH of <=5. The 1st agent and the 2nd agent are prepared to give a mixture having a pH of >=5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-part cosmetic composition in which a first part and a second part are mixed immediately before use, and in particular, the viscosity is increased by mixing the first part and the second part. The present invention relates to a two-part mixed cosmetic.

[0002]

2. Description of the Related Art Conventionally, in the field of cosmetics such as hair dyes, a two-part mixture comprising a first part and a second part stored in separate containers, and mixing the two immediately before use. Formula cosmetics are used. In such a two-part mixture type cosmetic, an active ingredient as a cosmetic is formed by mixing the first part and the second part, and the active ingredient is unstable and is used immediately after the formation of the active ingredient. Often used when it is necessary. Such components include oxidative hair dyes, hair bleaching agents, enzyme compounding agents, and the like.

[0003] In these two-part cosmetics, before mixing, it is necessary to reduce the residue of the cosmetic due to adhesion to the inner wall of the container and to facilitate the mixing operation of the first and second parts. 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, the mixed solution needs to have a predetermined viscosity in order to keep the mixed solution at the application site for a certain period of time. Conventionally, in order to prepare a cosmetic having a predetermined viscosity, one or both of the first agent and the second agent is prepared as an emulsifier or a viscous liquid, and a predetermined viscosity is obtained even after mixing. I was Further, a surfactant is contained in one or both of the first agent and the second agent, and a viscosity is obtained by utilizing a viscosity development due to a concentration change due to mixing of a surfactant solution. In addition, in the case of an enzyme-containing lotion, the expression of viscosity due to dissolution and dispersion of a powdery substance has been used.

Further, two-part hair dye compositions using a water-insoluble anionic polymer as a thickener are disclosed in JP-A-7-82122 and JP-A-7-82123.
No. 6,086,045. In these, a water-insoluble anionic polymer is blended in an aqueous developing agent, and a cationic polymer is blended in an alkaline aqueous lotion. Then, by mixing the aqueous developing agent and the alkaline aqueous lotion at the time of use, the anionic polymer 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 agent and the second agent are prepared as an emulsifier or a viscous liquid agent, a high viscosity is developed before mixing, so that the agent 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 development due to the change in the concentration of the surfactant solution, not only the obtained viscosity is not sufficient, but also the viscosity is greatly affected by the components in the formulation. For this reason, there is a problem that the formulation components are greatly restricted, and it is difficult to design a satisfactory formulation that should exhibit the original function of the cosmetic.
Further, when utilizing the viscosity development by dissolving and dispersing the powdery substance in the enzyme-containing lotion, there is a problem that a very slight increase in viscosity can be obtained.

In the oxidative hair dye compounds described in JP-A-7-82122 and JP-A-7-82123, a gel is formed by the reaction between an anionic polymer as a thickener and a cationic polymer. Is formed.
For this reason, if another 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 formulation is limited. Further, the anionic polymer as the thickener is insoluble in water. For this reason, when it is prepared as a cosmetic, it must be a dispersion system such as a suspension, and it is difficult to obtain a dosage form having excellent stability. Furthermore, when an anionic polymer is used as a thickener, a gel is formed, so that it is not possible to achieve a desired viscosity according to the purpose, and the use range is narrow.

The present invention has been made in view of the above-mentioned problems, and has low viscosity before use and easy to handle. In addition, it exhibits sufficient viscosity to remain at the application site during use, and can be freely formulated. An object of the present invention is to provide a two-part mixed type cosmetic that can provide a stable cosmetic without deteriorating the degree.

[0008]

Means for Solving the Problems The present inventors have conducted intensive studies in order to achieve the above-mentioned object. As a result, in a two-part cosmetic, a carboxyvinyl polymer or a modified carboxyvinyl polymer, The present inventors have found that the above problems can be solved by blending an appropriate amount of alcohol and higher fatty acid, and completed the present invention.

That is, the present invention relates to a carboxyvinyl polymer or a modified carboxyvinyl polymer having a pH of 7 or more,
A first agent containing a lower alcohol and a higher fatty acid,
A two-part mixed cosmetic comprising a second part and having a pH of a mixed liquid of the first part and the second part of 5 or more, wherein the main ingredient for cosmetics is the first part and the second part. It is a two-part mixed type cosmetic, characterized in that it is blended in one or both of the preparations.

The first agent of the present invention contains a carboxyvinyl polymer or a modified carboxyvinyl polymer at a pH of 7 or more, a lower alcohol and a higher fatty acid. The carboxyvinyl polymer usually exhibits a sharp viscosity from near neutral to the alkaline side. However, it is possible to lower the viscosity by mixing an appropriate amount of a lower alcohol and a higher fatty acid, and to increase the viscosity after mixing with the second agent. The second agent of the present invention preferably has a pH of 5
Any type can be used as long as the pH of the mixed solution can be adjusted to 5 or more by mixing with the first agent.

The carboxyvinyl polymer used in the present invention is not particularly limited as long as it has the above-mentioned characteristics. Examples of the modified carboxyvinyl polymer include, for example, an alkyl-modified carboxyvinyl polymer. Examples of the carboxyvinyl polymer and modified carboxyvinyl polymer having such properties include Goodrich's trade name "Carbopol", "Pemulen", and Wako Pure Chemical Industries' trade name "Hibiswako". . The blending amount of the carboxyvinyl polymer in the first agent can be appropriately changed according to the type of the preparation and the required viscosity. However, in general, when the blending amount of the carboxyvinyl polymer is less than 0.005% by weight based on the whole first agent, sufficient viscosity cannot be obtained, and when it exceeds 5.0% by weight, a high viscosity is developed. Therefore, in general, it is preferably 0.005 to 5% by weight, more preferably 0.1 to 5% by weight.
3.0% by weight.

The lower alcohol used in the present invention includes methanol, ethanol, butanol, propanol, isopropanol, isobutyl alcohol, t-butyl alcohol and the like, and one or more kinds can be used. The blending amount of the lower alcohol in the first part can be appropriately changed depending on the type of the preparation and the required viscosity, and is 0.01 to 25.0 based on the whole first part.
% By weight, more preferably 5.0 to 5.0% by weight.
20.0% by weight. The lower alcohol content is 0.
If it is less than 01% by weight, a high viscosity is exhibited, and if it exceeds 25.0% by weight, a sufficient viscosity cannot be obtained after mixing.

The higher fatty acid used in the present invention preferably has 12 to 24 carbon atoms. For example, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, linoleic acid,
Linolenic acid and the like. The amount of the higher fatty acid in the first part can be appropriately changed depending on the type of the preparation and the required viscosity.
It is preferable to add 1 to 25.0% by weight, more preferably 5.0 to 15.0% by weight. When the blending amount of the higher fatty acid is less than 0.01% by weight, a high viscosity is exhibited and 2
If it exceeds 5.0% by weight, a sufficient viscosity cannot be obtained after mixing.

The pH of the first and second agents can be adjusted by using a pH adjuster generally used in the field of cosmetics. For example, as the acid, an inorganic acid (for example, phosphoric acid, hydrochloric acid, etc.), an organic acid (for example, citric acid, tartaric acid,
Examples of alkaline agents include ammonia, alkanolamines (eg, monoethanolamine, diethanolamine, triethanolamine, etc.), basic amino acids (eg, arginine, lysine, etc.), and organic amines (eg, guanidine, 2-amino- 2-methylpropane, etc.) and inorganic alkalis (for example, sodium hydroxide, potassium hydroxide, etc.) are used. Further, a buffer solution (for example, sodium salt of phosphoric acid-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 effect and stability of the main agent for cosmetics and the carboxyvinyl polymer are not impaired.
1: 3 (first agent: second agent, weight ratio), preferably 1: 1
１ ： 1: 2. . The two-component cosmetic composition according to the present invention has various purposes, for example, a hair dye, a bleaching agent, a permanent agent,
It can be used as a depilatory, an enzyme-containing lotion and the like.

Oxidative dyes, direct dyes, acid dyes, oil-soluble dyes when used as a hair dye,
Dyes such as basic dyes and the like, oxidizing agents when used as decolorizing agents, permanent waving agents, and reducing agents when used as depilatory agents are exemplified.

Among them, the oxidation dyes include, for example, p-
Phenylenediamine, p-toluylenediamine, N-meth
Tyl-p-phenylenediamine, N, N-dimethyl-p
-Phenylenediamine, N, N-diethyl-2-methyl-
p-phenylenediamine, N-ethyl-N- (hydroxy
(Silethyl) -p-phenylenediamine, chlor-p-phenyl
Enylenediamine, N, N-bis- (2-hydroxy
Tyl) -p-phenylenediamine, methoxy-p-fe
Nilendiamine, 2,6-dichloro-p-phenylenediene
Amine, 2-chloro-6-bromo-p-phenylenedia
Min, 2-chloro-6-methyl-p-phenylenediamine
, 6-methoxy-3-methyl-p-phenylenediamine
, 2,5-diaminoanisole, N- (2-hydroxy
(Cipropyl) -p-phenylenediamine, N-2-metho
One or more of xylethyl-p-phenylenediamine and the like
Seed NH_Two-Group, NHR¹-Group or N (R¹)_Two-Group,
(R ¹Is an alkyl group having 1 to 4 carbon atoms or hydroxya
Represents a alkyl group. P-diamines having 2,5-
Diaminopyridine derivatives; para-aminophenol, 2
-Methyl-4-aminophenol, 3-methyl-4-a
Minophenol, 2-chloro-4-aminophenol,
3-chloro-4-aminophenol, 2,6-dimethyl
-4-aminophenol, 3,5-dimethyl-4-amido
Nophenol, 2,3-dimethyl 4-aminophenol
2,5-dimethyl-4-aminophenol, 2,4
-P- such as diaminophenol and 5-aminosalicylic acid
Aminophenols; o-aminophenols;
Enylenediamines; α-naphthol, o-cresol
M-cresol, 2,6-dimethylphenol,
2,5-dimethylphenol, 3,4-dimethylpheno
, 3,5-dimethylphenol, benzcatechin,
Pyrogallol, 1,5-dihydroxynaphthalene, 1,
7-dihydroxynaphthalene, 5-amino-2-methyl
Phenol, hydroquinone, 2,4-diaminoaniso
M-toluylenediamine, 4-aminophenol,
Resorcinol, resorcinol monomethyl ether, m-fe
Nilendiamine, 1-phenyl-3-methyl-5-pyra
Zolone, 1-phenyl-3-amino-5-pyrazolone,
1-phenyl-3,5-dimethyl-pyrazolidine, 1-
Methyl-7-dimethyl-amino-4-hydroxy-2-
Quinolone, m-aminophenol, 4-chlororesorci
, 2-methylresorcinol, 2,4-diaminophenoki
Siethanol, 3,5-diamino-trifluoromethylbe
Benzene, 2,4-diamino-fluorobenzene, 3,5-
Diamino-fluorobenzene, 2,4-diamino-6-h
Droxypyrimidine, 2,4,6-triaminopyrimidi
2-amino-4,6-dihydroxypyrimidine, 4
-Amino-2,6-dihydroxypyrimidine, 4,6-
Diamino-2-hydroxypyrimidine, 2,6-diamido
Nopyrimidine and the like.

As the direct dye, for example, 2-amino-
4-nitrophenol, 2-amino-5-nitrophenol, nitro-p-phenylenediamine hydrochloride, nitro-
p-phenylenediamine, p-aminophenylsulfamic acid, p-nitro-o-phenylenediamine, piclamic acid, sodium piclamate, picric acid, chrome brown RH, hematein, nitro-p-phenylenediamine sulfate, p-nitro-sulfate o-phenylenediamine, p-nitro-m-phenylenediamine sulfate, 1-amino-4-methylaminoanthraquinone, 1,4-diaminoanthraquinone and the like.

Examples of the acid dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 04, Red No. 105, Red No. 106, Yellow No. 4, Yellow No. 5, Green No. 3, Blue No. 1
No., Blue No. 2, Red No. 201, Red No. 227, Red No. 23
No. 0, Red No. 231, Red No. 232, Orange No. 205, Orange No. 2
07, Yellow 202, Yellow 203, Green 201,
Green 204, Green 205, Blue 202, Blue 20
No. 3, Blue No. 205, Brown 201, Red No. 401,
Red 502, Red 503, Red 504, Red 50
6, Orange 402, Yellow 402, Yellow 403, Yellow 406, Yellow 407, Green 401, Green 402
No. 4, purple No. 401, black No. 401 and the like.

Examples of oil-soluble dyes include red 215
No., Red No. 218, Red No. 225, Orange No. 201, Orange No. 20
No. 6, Yellow 201, Yellow 204, Green 202, Purple 201, Red 501, Red 505, Orange 403
No. 404, yellow 405, blue 403 and the like.

As the basic dye, for example, red 213
No. red 214; and the basic dyes of Arianor Sienna Brown, Mahogany, Ma.
der Red, Steel Blue, Straw
Yellow and the like.

The oxidizing agent when used as a decolorizing agent includes, for example, hydrogen peroxide, bromate and the like.

Examples of the reducing agent when used as a permanent waving agent or a depilatory agent include thioglycolic acid, thioglycolate, cysteine, glyceryl thioglycolate ester, thioglycerin, cysteamine thiosulfate and the like.

These main ingredients for cosmetics may be the first ingredient or the second ingredient.
It is possible to mix with either one or both of the agents.

In the present invention, one or both of the first agent and the second agent include other components used in ordinary cosmetics, such as fragrances, alcohols such as aromatic alcohols and polyhydric alcohols, and cationic interfaces. An activator, an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, a preservative, an ultraviolet ray inhibitor, a metal sequestering agent, and the like can be appropriately compounded within a range that does not impair the effects of the present invention.

[0026]

EXAMPLES Next, the present invention will be described more specifically with reference to examples and the like, but the present invention is not limited thereto. Unless otherwise specified, the compounding amount is% by weight based on the first agent or the second agent.

Examples 1 to 3 and Comparative Examples 1 to 3 Based on the formulations shown in Table 1, hair dyes comprising a first agent and a second agent were prepared by the method described below. And the pH of the second agent was measured. Viscosity, ease of mixing, no dripping, and application to hair when the obtained first and second agents are mixed at a ratio of 1: 1.5 (first agent: second agent, weight ratio). The dyeing power and usability (smoothness) at the time of the evaluation were evaluated according to the following criteria. Table 2 shows the results.

Evaluation Method of Viscosity after Mixing で: It is easy to take out of the coating container with an appropriate mixing viscosity and excellent in operability. ：: The mixture viscosity is slightly high and it is difficult to take out of the coating container. Δ: The mixture viscosity was slightly low and dripped from the mouth of the coating container. X: The mixing viscosity is extremely low, and the mixture falls down from the mouth of the application container and cannot be applied to hair.

Evaluation method of ease of mixing A: Mix and mix by slowly stirring up and down 15 times. ：: Mix and stir up and down slowly 30 times to mix. Δ: Mix and mix by stirring vigorously up and down 30 times. X: It mixes and does not mix even if it vigorously stirs up and down.

Evaluation method for non-sagging A: No sagging even after 30 minutes from application. ：: Some 30 minutes after the application, the film slightly drops. Δ: Some 15 minutes after the application, the film slightly drops. X: It falls down immediately after application.

Evaluation method of dyeing power A: Very high dyeing power. ：: High dyeing power. Δ: Low dyeing power. X: Almost no dyeing.

Evaluation method of usability (smoothness) A: Very smooth and good combability. ：: Smooth, good comb. Δ: Squeaking occurs and the comb is difficult to pass. ×: Squeaking occurs and combs do not pass.

Production Method (First Agent) After dissolving the carboxyvinyl polymer in ion-exchanged water, the carboxyvinyl polymer is sequentially added and dissolved by stirring. (Second agent) It is sequentially added to ion-exchanged water and dissolved by stirring.

[0034]

[Table 1] 例 Example Comparative Example Ingredient ─────── ── {1 2 3 1 2 3} A. 1st agent Carboxyvinyl polymer 1.0 2.0 3.0-2.0 1.5 Stearic acid 5.0 3.0 10.0 15.0-5.0 Ethanol 10.0 8.0 15.0 5.0 10.0-Ammonia water qs qq qq qq qq qq antioxidant qq qq qq qq qq qq. Qs qq para-phenylenediamine 0.5 1.0 0.8 1.0 0.5 0.8 resorcin 0.8 0.2 0.5 0.4 0.5 0.3 para-aminoorthocresol 0.2 0.5 0.1 0.3 0.2 0.5 meta-aminophenol 0.1 0.2 0.3 0.1 0.1 0.4 ion-exchange water residue residue residue residue residue residue pH 10.0 9.5 8.5 10.0 9.0 9.5 Viscosity (cps) 500 900 700 300> 100,000> 100,000 B. 2nd agent 30% aqueous hydrogen peroxide 20.0 20.0 20.0 20.0 20.0 20.0 Citric acid proper amount proper amount proper amount proper amount proper amount proper amount proper amount proper amount proper amount proper amount proper amount proper amount proper amount deionized water residue residue residue residue residue pH 3.0 2.8 2.9 3.0 3.5 2.8 ─────────────────────────────

[0035]

[Table 2] 例 Example Comparative Example Ingredient ──────── ─ ─────── 1 2 3 1 2 3 粘度 Viscosity after mixing ◎ ◎ ◎ × ○ ○ Ease of mixing ◎ ◎ ◎ ○ × × No dripping ◎ ◎ ◎ × △ △ Dyeing power ◎ ◎ ◎ △ △ △ Usability ◎ ◎ ◎ × × × ────────── ──────────────────────

Example 4 Decolorizer First agent Carboxyvinyl polymer 1.5% by weight Oleic acid 10.0 Propanol 10.0 Amount of ammonia water Appropriate amount of triethanolamine Appropriate amount of chelating agent Appropriate amount of fragrance 0.1 Protein hydrolyzate 0.1 Silicone 0.1 Ion-exchanged water Residual 2nd agent Hydrogen peroxide solution 30% 20.0 Tartaric acid Appropriate amount Chelating agent Appropriate amount Ion-exchanged water Residue (Preparation method) After dissolving the carboxyvinyl polymer in ion-exchanged water, add sequentially and stir to dissolve ( First agent, viscosity: 40
0 cps). It is sequentially added to ion-exchanged water and dissolved by stirring (second agent). The obtained first agent and the second agent are easily mixed,
After mixing, it did not drip easily and had strong decoloring power.

Example 5 Decolorizing agent First agent Carboxyvinyl polymer 1.0% by weight Linoleic acid 15.0 Butanol 3.0 Methanol 3.0 Sodium hydroxide Appropriate amount Chelating agent Appropriate amount Fragrance 0.1 Deionized water Residue Second agent Hydrogen peroxide water 30% 20.0 Hydrochloric acid Appropriate amount Chelating agent Appropriate amount Ion-exchanged water residue (Preparation method) After dissolving the carboxyvinyl polymer in ion-exchanged water, add it sequentially and stir-dissolve (first agent, viscosity: 35
0 cps). It is sequentially added to ion-exchanged water and dissolved by stirring (second agent). The obtained first agent and the second agent are easily mixed,
After mixing, it did not drip easily and had strong decoloring power.

Example 6 Decolorizing Agent First Agent Alkyl-Modified Carboxyvinyl Polymer 1.0% by Weight Linoleic Acid 15.0 Butanol 3.0 Methanol 3.0 Sodium Hydroxide Appropriate Chelating Agent Appropriate Perfume 0.1 Deionized Water Residue 2 agents Hydrogen peroxide water 30% 20.0 Hydrochloric acid Appropriate amount Chelating agent Appropriate amount Ion exchange water Residue (Preparation method) After dissolving the alkyl-modified carboxyvinyl polymer in ion exchange water, add sequentially and dissolve with stirring
Agent, viscosity: 350 cps). It is sequentially added to ion-exchanged water and dissolved by stirring (second agent). The obtained first agent and the second agent were easy to mix with each other, were hard to drip after mixing, and had strong decolorizing power.

[0039]

As is apparent from the above description, according to the two-part cosmetics of the present invention, the viscosity is low before use, and it is easy to handle. In addition, there is an effect that the cosmetics can be stably provided without impairing the flexibility of prescription.

Claims (5)

[Claims] 1. A first agent containing a carboxyvinyl polymer or a modified carboxyvinyl polymer having a pH of 7 or more, a lower alcohol, and a higher fatty acid, and a second agent, wherein the first agent and the second agent are 2. A two-part mixed cosmetic in which the pH of the mixed liquid becomes 5 or more, wherein the main ingredient for cosmetics is blended in one or both of the first part and the second part. Mixed cosmetics. 2. The method according to claim 1, wherein the second agent has a pH of 5 or less.
A two-part mixed cosmetic according to the above. 3. The two-part mixed type cosmetic according to claim 1, wherein the viscosity of the first part is 3000 cps or less. 4. The cosmetic base material is a dye.
The two-part mixed type cosmetic according to any one of claims 1 to 3. 5. The two-part cosmetic composition according to claim 4, wherein the main ingredient for cosmetics is an oxidation dye contained in the first part, and the second part contains an oxidizing agent.