JPH1067624A - Hair treating emulsion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair treating emulsion capable of stably holding a principal agent such as an oxidation dye without dropping off in using and having high hair dyeing effect by combinedly using the first agent which is prepared by mixing a specific compound into an oil phase of a water-in-oil type emulsion and a specific second agent. SOLUTION: This hair treating emulsion is obtained by combinedly using the first agent which is prepared by mixing an oil-soluble polymer compound into an oil phase of a water-in-oil type emulsion containing a principal agent in a water phase and capable of stably holding the principal agent, and a second agent capable of easily transferring the first agent to an oil-in-water type emulsion or inducing demulsification when mixed with the first agent. A polar oil may be added to the oil-soluble polymer compound of the first agent. Preferably, a cellulose ether or ethyl cellulose, etc., is used as the oil-soluble polymer compound and an isostearyl alcohol, is used as the polar oil. Especially, the emulsion composed of the first agent containing an oxidation dye and the second agent containing an oxidizer such as H2 O2 is preferable. The two-agents type hair dye suppresses deterioration of the hair dye even stored for a long period of time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emulsion for treating hair, and more particularly to an oil containing a dye as a main component in an aqueous phase and an oil-soluble polymer compound (and a polar oil) in an oil phase. A first agent which is a water-based emulsion, and a second agent which, when mixed with the first agent, converts the first agent into an oil-in-water emulsion or / and causes demulsification of the first agent. And a hair treatment emulsion comprising:

[0002]

2. Description of the Related Art Hair treatment agents such as hair dyes and hair bleaching agents are required to have an appropriate viscosity in order to be easily retained at the time of use and to prevent dripping from hair. For this reason, these hair treatment agents are often prepared as emulsions.

[0003] Conventionally, these hair treatment emulsions have been prepared from oil-in-water (hereinafter referred to as O / W) from the viewpoint of simplicity of preparation and usability.
Type emulsion). The main ingredients used in O / W emulsions, such as dyes for hair dyes and reducing agents for permanent waving agents, are usually water-soluble and are therefore external phases in the emulsion. Contained in the continuous phase (aqueous phase). However, for this reason, such a base material has a drawback that the chance of contact with air increases, the deterioration is easily caused by oxidation, and the stability is lacking. To compensate for this drawback, an emulsion for hair treatment has been proposed in which the first agent is a water-in-oil type (hereinafter, referred to as a W / O type emulsion) and the chance of contact between the main agent and air is reduced.

[0004]

However, in the emulsion for hair treatment using such a W / O type emulsion, it may be difficult to adjust the viscosity depending on the contained components. For example, if a large amount of a surfactant is used to improve the stability of the emulsion, it is difficult to maintain an appropriate viscosity that does not hang from the hair when mixed with the second agent. In addition, many hair treatment emulsions using a W / O type emulsion have insufficient hair dyeing power, and there is a problem that it is difficult to increase this.

[0005] The present invention has been made in view of the above-described problems, and has been developed in view of the fact that W /
An oil-soluble polymer compound is contained in the oil phase of the first agent composed of an O-type emulsion, and when the first agent is mixed with the second agent, the first agent is easily converted into an O / W-type emulsion or / and emulsified. It is an object of the present invention to provide an emulsion for hair treatment having a suitable viscosity, which has an appropriate viscosity without causing breakage and dripping from hair.

[0006]

The present inventors have conducted intensive studies to achieve the above-mentioned object, and as a result, have found that a W / O emulsion containing an oil-soluble polymer compound (and a polar oil) in an oil phase. By mixing the first agent with the first agent at the time of use, the second agent causes phase inversion of the first agent into an oil-in-water emulsion by mixing with the first agent and / or demulsification of the first agent. ,
The inventors have found that the above problems can be solved, and have completed the present invention.

That is, the present invention relates to a first agent of a water-in-oil emulsion containing a main agent in an aqueous phase and an oil-soluble polymer compound (and a polar oil) in an oil phase; A second agent which causes the first agent to phase-invert to an oil-in-water emulsion by mixing with the agent and / or causes demulsification of the first agent. .

According to the present invention, the main agent is contained in the inner phase of the W / O emulsion during storage and is not oxidized by air, so that the stability of the main agent can be improved.
Also, since components such as alkaline agents are contained in the internal phase,
It is possible to prevent corrosion and the like of the container and to reduce off-flavors. Furthermore, since the lipophilic fragrance is contained in the oil phase, which is the external phase, the fragrance of the fragrance is easily obtained.

[0009] By blending a polar oil, the effect of the dye as the main ingredient can be further enhanced. in addition,
Appropriate viscosity is maintained during hair application, and there is no danger of dripping. The hair treatment emulsion according to the present invention can be used, for example, as a hair dye. Examples of the main agent of the hair dye include p-phenylenediamine, p-toluylenediamine, N-methyl-p-phenylenediamine, N,
N-dimethyl-p-phenylenediamine, N, N-diethyl-dimethyl-p-phenylenediamine, N-ethyl-N- (hydroxyethyl) -p-phenylenediamine, chloro-p-phenylenediamine, N, N-bis −
(2-hydroxyethyl) -p-phenylenediamine,
Methoxy-p-phenylenediamine, 2,6-dichloro-p-phenylenediamine, 2-chloro-6-bromo-
p-phenylenediamine, 2-chloro-6-methyl-p
-Phenylenediamine, 6-methoxy-3-methyl-p
-Phenylenediamine, 2,5-diaminoanisole,
One or several NH ₂ — groups, NHR ₁ — groups or N, such as N- (2-hydroxypropyl) -p-phenylenediamine, N-2-methoxy-p-phenylenediamine
P-Diamines having a (R ₁ ) ₂ -group (R ₁ represents an alkyl group having 1 to 4 carbon atoms or a hydroxyalkyl group); 2,5-diaminopyridine derivative; para-aminophenol, 2-methyl-4- Aminophenol, 3-methyl-4-aminophenol, 2-chloro-4-aminophenol, 3-chloro-4-aminophenol, 2,6
-Dimethyl-4-aminophenol, 3,5-dimethyl-4-aminophenol, 2,3-dimethyl-4-aminophenol, 2,5-dimethyl-4-aminophenol, 2,4-diaminophenol, 5- P-aminophenols such as aminosalicylic acid, o-aminophenols, o-phenylenediamines, α-naphthol, o-
Cresol, m-cresol, 2,6-dimethylphenol, 2,5-dimethylphenol, 3,4-dimethylphenol, 3,5-dimethylphenol, benzcatechin, pyrogallol, 1,5-dihydroxynaphthalene, 1,7- Dihydroxynaphthalene, 5-amino-2
-Methylphenol, hydroquinone, 2,4-diaminoanisole, m-toluylenediamine, 4-aminophenol, resorcinol, resorcinol monomethyl ether,
m-phenylenediamine, 1-phenyl-3-methyl-
5-pyrazolone, 1-phenyl-3,5-diget-pyrazolidine, 1-methyl-7-dimethyl-amino-4-hydroxy-2-quinolone, m-aminophenol, 4-
Chlororesorcin, 2-methylresorcin, 2,4-diaminophenoxyethanol, 3,5-diamino-trifluoromethylbenzene, 2,4-diamino-fluorobenzene, 3,5-diamino-fluorobenzene, 2,4-diamino- 6-dihydroxypyrimidine, 2,4,6-triaminopyrimidine, 2-amino-4,6-dihydroxypyrimidine, 4-amino-2,6-dihydroxypyrimidine, 4,6-diamino-2-hydroxypyrimidine, 2, Oxidation dyes such as 6-diaminopyrimidine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, nitro-p-phenylenediamine hydrochloride, nitro-p-phenylenediamine, p-aminophenylsulfamic acid, p -Nitro-o-phenylenediamine,
Picramic acid, sodium picramate, picric acid,
Chrome brown RH, hematein, nitro-p-phenylenediamine sulfate, p-nitro-o-phenylenediamine sulfate, p-nitro-m-phenylenediamine sulfate, 1
-Amino-4-methylaminoanthraquinone, 1,4-
Diaminoanthraquinone and the like can be used. Such a base agent is not particularly limited as long as it is hydrophilic and is distributed more in the aqueous phase.

In the W / O emulsion according to the present invention,
Examples of polar oils incorporated in the oil phase include isopropyl myristate, cetyl octoate, octyl dodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate,
Decyl oleate, hexyl decyl dimethyl octoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate,
Cholesteryl 2-hydroxystearate, dipentaerythritol fatty acid ester, monoisostearic acid
N-alkyl glycol, neopentyl glycol dicaprate, diisostearyl malate, di-sebacate
2-ethylhexyl, di-2-hexyldecyl myristate, di-2-hexyldecyl palmitate, di-2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, ethyl acetate, butyl acetate, amyl acetate, Ester oil such as triethyl citrate, lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol,
Batyl alcohol, 2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterol,
Higher alcohols such as hexyldecanol, isostearyl alcohol and octyldodecanol can be mentioned, and higher alcohols which are liquid at room temperature, such as oleyl alcohol, isostearyl alcohol and octyldodecanol, are particularly preferable. As other oil components, hydrocarbons, oils and fats, fatty acids, silicones, and the like can be arbitrarily added as long as the emulsion stability is not impaired.

In the W / O emulsion according to the present invention,
The oil-soluble polymer compound to be added to the oil phase is, for example, cellulose ether or a mixture thereof, and is preferably ethyl cellulose in which one or more of the hydroxyl groups is ethoxy substituted. It is possible to use one or several cellulose ethers having different substitution rates and different molecular weights depending on the formulation.

In the W / O emulsion according to the present invention, a water-soluble polymer compound can be blended in the aqueous phase. Examples of such a water-soluble polymer compound may be any water-soluble polymer compound generally used in cosmetics, but preferably carboxymethyl cellulose,
Hydroxyethyl cellulose, hydroxypropyl cellulose, cationized cellulose and the like can be mentioned. By adding these, the viscosity of the emulsion according to the present invention can be improved.

The W / O emulsion according to the present invention can be prepared by a usual emulsification method. For example, it can be prepared by mixing the above components and the aqueous phase component, and applying mechanical energy to the mixture from outside using a homogenizer, a mixer, a colloid mill or the like.

The second agent in the hair treatment composition according to the present invention may be of various types depending on the composition of the first agent. For example, when the first agent is a W / O emulsion containing water having an internal phase ratio close to the saturation amount, if the second agent contains a certain amount or more of water, Phase inversion or /
And emulsification destruction can occur.

In general, W / O emulsions are incompatible with lower alcohols such as ethanol and isopropyl alcohol, inorganic salts having a salting action such as sodium thiosulfate, and hydrophilic surfactants having an HLB value of 12 or more. It is known to be stable and to cause phase inversion or / and demulsification when mixed with them. Therefore, as long as the substance contains these substances at a predetermined concentration or more, it can be used as the second agent irrespective of the type of liquid, gel, cream and the like.

The mixing ratio of the first agent and the second agent is particularly preferable as long as phase inversion or / and demulsification of the first agent is caused and the effect of the main agent contained in the first agent is not impaired. It is not limited. In the present invention, one or both of the W / O emulsion (first agent) and the second agent include other components used in a normal hair treatment agent, such as a fragrance, a pH adjuster, an aromatic alcohol, and a preservative. In addition, a humectant, a water-soluble thickener, an ultraviolet absorber, a sequestering agent and the like can be appropriately compounded within a range that does not impair the effects of the present invention.

Next, a two-part hair dye containing an oxidation dye will be described as a hair treatment agent according to the present invention. This two-part hair dye is composed of a first part, which is a W / O emulsion containing an oxidation dye that develops color by oxidation, and a second part, which contains an oxidant such as hydrogen peroxide. . In such a two-part hair dye, the oxidation dye is contained in the aqueous phase, which is the internal phase, so that the hair dye is suppressed from deteriorating even when stored for a long period without contact with air, and stability. A good hair dye.

When the hair treatment agent according to the present invention is used as a hair dye, it is also possible to use a direct dye which is initially colored as the dye. A hair dyeing effect can be obtained by mixing a predetermined amount of a direct dye such as a tar dye or a nitro dye. Further, the W / O of the two-part oxidative hair dye is used.
When a small amount of the above-described direct dye is added to the mold first agent in addition to the oxidation dye, there is no remarkable color development because the direct dye is incorporated in the dispersed phase (inner phase) in the first agent alone. When the first component undergoes phase inversion and / or emulsification destruction when mixed with the second component, the dye directly comes out to the continuous phase, and remarkable color formation is observed. This phenomenon indicates that the first agent and the second agent are completely mixed and that the first agent has undergone phase inversion and / or emulsification destruction. When the agent is used, it can be used as an indicator of the end of mixing.

[0019]

Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments. In addition, all compounding amounts show weight%. <Examples 1-1 to 1-5 and Comparative Examples 1-1 to 1-4> Preparation of W / O-Type Hair Treatment Emulsion (First Agent) As a W / O-type hair treatment emulsion in the present invention, a W / O-type emulsion mainly containing an oxidation dye was prepared.

Specifically, according to the formulation shown in Table 1, an aqueous phase containing an aqueous component was added to an oil phase containing an oil-soluble polymer compound (ethyl cellulose) and a polar oil, and emulsified. From 1 to 5 W / O emulsions were prepared. Further, for Comparative Examples 1-1 to 1-4, W /
An O-type emulsion was obtained.

[0021]

[Table 1]

2. Preparation of Second Agent The second agent in the hair treatment agent according to the present invention was prepared according to the formulation shown in Table 2.

[0023]

[Table 2]

3. Stability of First Agent The W / O emulsions of Examples 1-1 to 1-5 and the W / O emulsions of Comparative Examples 1-1 to 1-4 shown in Table 1 were 5
A stability test was performed at 0 ° C., and the stability after 4 weeks was determined according to the following criteria.

A: No change in appearance and stable. ×: Oil separation or / and water separation was observed. Table 3 shows the results.

[0026]

[Table 3]

As apparent from Table 3, the W / O emulsions of Examples 1-1 to 1-5 and Comparative Examples 1-2 and 1-4 were 50
Comparative Examples 1-1 and 1
-3 W / O emulsion was unstable. 4. Phase inversion or / and emulsification destruction test and dyeing test of the mixture of the first agent and the second agent W / O of Examples 1-1 to 1-5 having good stability
2-1 to 2-3 obtained as the second agent were mixed in equal amounts with respect to the emulsified emulsion and Comparative Examples 1-2 and 1-4, and O / W was added.
It was confirmed whether phase inversion to the mold or / and demulsification occurred. The judgment was made based on the dilutability in water. In addition, a dyeing test using human hair was performed on the combination that caused phase inversion and / or emulsification destruction, and when applied, the presence or absence of dripping of the hair dye from the hair was confirmed.

The results are shown in Table 4.

[0029]

[Table 4]

As is evident from Table 4, the W / O emulsions of Examples 1-1 to 1-5 all resulted in phase inversion and / or emulsification destruction and no dripping. On the other hand, Comparative Example 1
With respect to -2 and 1-4, when applied, dripping of the hair dye from the hair was confirmed. Hereinafter, examples of the first agent containing an active ingredient as necessary will be described. <Example 2> Ethyl cellulose 0.5 (N-22 manufactured by Hercule) Ethanol 1.0 Isostearyl alcohol 5.0 Octyl palmitate 5.0 Methylphenylpolysiloxane 10.0 Monoethanolamine 2.0 Ammonia water (28 5.0 Collagen protein hydrolyzate 0.5 EDTA salt 0.2 L-ascorbic acid 0.5 Sodium hydrosulfite 0.1 Paraphenylenediamine 1.0 Resorcinol 0.5 Orthoaminophenol 0.2 Perfume Suitable Amount Purified water Residue <Example 3> Ethyl cellulose 0.3 (N-22 manufactured by Hercule) Ethanol 2.0 Isostearyl alcohol 5.0 Octyldodecanol 3.0 Octyl palmitate 5.0 Methylphenylpolysiloxane 5.0. 0 monoethanolamine 1.0 Ammonia water (28%) 3.0 Amino-modified silicone 1.0 (Toray Silicone Co., Ltd .: SM-8702C) EDTA salt 0.2 L-ascorbic acid 0.5 Ammonium thioglycolate solution (50%) 1 0.0 Paraphenylenediamine 0.5 Resorcin 0.2 Metaaminophenol 0.1 Perfume Appropriate amount Purified water residue <Example 4> Ethyl cellulose 0.5 (N-7 manufactured by Hercule) Ethanol 0.5 Isostearyl alcohol 10 0.0 Octyldodecanol 3.0 Octyl palmitate 5.0 Sodium hydroxide 1.0 Monoethanolamine 3.0 Keratin protein hydrolyzate 0.3 Amino-modified silicone 1.0 (APS-10 manufactured by Shin-Etsu Chemical Co., Ltd.) -DMS) EDTA salt 0.2 L-ascorbic acid 0.5 Sodium hydrosulfite G 0.1 Paraphenylenediamine 1.0 Orthoaminophenol 0.5 Perfume Appropriate amount Purified water residue <Example 5> Ethyl cellulose 0.5 (N-22 manufactured by Hercule) Ethanol 1.0 Isostearyl alcohol 5.0 Methylphenyl polysiloxane 15.0 Monoethanolamine 2.0 Aqueous ammonia (28%) 6.0 EDTA salt 1.0 L-ascorbic acid 0.5 Sodium bisulfite 0.5 Quaternized collagen protein hydrolyzate 1. 0 Amino-modified silicone 2.0 (Toray Silicone Co., Ltd .: SM-8702C) Paraphenylenediamine 1.0 Resorcinol 1.2 Metaphenylenediamine 0.3 Perfume Appropriate amount Purified water residue <Example 6> Ethyl cellulose 1.0 ( Hercule N-4) Isostearyl alcohol 10.0 Octyldodecanol 5.0 Dimethylpolysiloxane 0.2 (polymerization degree 3000-6000) Dimethylpolysiloxane 6cs 2.0 Monoethanolamine 1.0 Ammonia water (28%) 5.0 EDTA salt 0.5 L-ascorbic acid 0.5 Ammonium thioglycolate (50%) 1.0 Paraphenylenediamine 1.0 Resorcin 0.5 Metaaminophenol 0.3 Perfume Appropriate amount Purified water residue <Example 7> Ethyl cellulose 0.5 (manufactured by Hercule Co.) N-50) ethanol 0.5 isostearyl alcohol 10.0 octyl dodecanol 7.0 octyl palmitate 10.0 dimethylsiloxane / methyl 2.0 (polyoxyethylene) siloxane copolymer hydroxyethanediphosphonic acid (60% ) 1.0 (Toray Silicon) SC-9450) Monoethanolamine 2.0 L-Ascorbic acid 0.5 Sodium hydrosulfite 0.1 Paraphenylenediamine 0.5 Orthoaminophenol 0.5 Perfume Appropriate amount Purified water residue <Example 8> Ethyl cellulose 1.0 (N-22 manufactured by Hercule) Ethanol 1.0 Isostearyl alcohol 5.0 Methylphenyl polysiloxane 15.0 Monoethanolamine 2.0 Ammonium carbonate 5.0 Ammonia water (28%) 0 EDTA salt 0.5 Pyrrolidone carboxylate 0.5 L-ascorbic acid 0.5 Ammonium thioglycolate (50%) 1.0 Paraphenylenediamine 0.5 Resorcinol 0.2 Paranitroorthophenylenediamine 0.3 Fragrance Appropriate amount Purified water residue <Example 9> Ethyl cellulose 1.0 (N-22 manufactured by Hercule) Benzyl alcohol 5.0 Isostearyl alcohol 5.0 Methylphenyl polysiloxane 20.0 Monoethanolamine 2.0 Aqueous ammonia (28%) 5.0 EDTA salt 0.5 N-Methylpyrrolidone 5.0 L-Ascorbic acid 0.5 Sodium hydrosulfite 0.2 Paratoluylenediamine sulfate 2.5 Resorcinol 1.0 Metaaminophenol 0.3 Paraaminophenol 0.3 Fragrance Suitable amount Purified water Residues All the examples shown here were excellent in stability of the main ingredient, did not sag during use, and were hair treatment emulsions having a high hair dyeing effect.

The effect of the present invention was clear from these results.

[0032]

As is apparent from the above description, the emulsion for hair treatment according to the present invention has excellent stability of the main ingredient, has no dripping when used, and has a high hair dyeing effect. It is possible to provide an object.

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Toshio Yanagi 1050 Nippa-cho, Kohoku-ku, Yokohama-shi, Kanagawa Pref.

Claims (9)

[Claims] 1. A first agent of a water-in-oil emulsion containing a main agent in an aqueous phase and an oil-soluble polymer compound in an oil phase, and the first agent is mixed with the first agent. An emulsion for treating hair, comprising: a phase-inverting agent to an oil-in-water emulsion; and / or a second agent that causes demulsification of the first agent. 2. A first water-in-oil emulsion containing a main agent in an aqueous phase and an oil-soluble polymer compound and a polar oil in an oil phase.
Hair comprising: a first agent; and a second agent which, when mixed with the first agent, inverts the first agent into an oil-in-water emulsion or / and causes demulsification of the first agent. Emulsions for processing. 3. The hair treatment emulsion according to claim 1, wherein the main agent is an oxidation dye, and the second agent contains an oxidizing agent. 4. The hair treatment emulsion according to claim 1, wherein the oil-soluble polymer compound is cellulose ether or a mixture thereof. 5. The hair treatment emulsion according to claim 1, wherein the oil-soluble polymer compound is ethyl cellulose or a mixture thereof. 6. The hair treatment emulsion according to claim 1, wherein a water-soluble polymer compound is further contained in the aqueous phase of the first agent. 7. The hair treatment emulsion according to claim 6, wherein the water-soluble polymer compound is a cellulose derivative or a mixture thereof. 8. The hair treatment emulsion according to claim 2, wherein the polar oil is an ester oil or a higher alcohol which shows a liquid state at normal temperature. 9. The emulsion for treating hair according to claim 2, wherein the polar oil is one or more selected from the group consisting of isostearyl alcohol, octyldodecanol and decyltetradecanol. Stuff.