JPH10182375A - Spray type acidic hair dyeing agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an acidic hair dyeing agent excellent in operability and dyeability. SOLUTION: A carboxyviny1 polymer is added to an acidic hair dyeing agent containing at least an acidic dye, an acid, etc., and dimethyl ether is used as a propellant. The carboxyvinyl polymer-containing acidic dyeing agent and dimethyl ether are put in an inner bag made of a resin and the inner bag is housed in a spray can to give a spray type acidic hair dyeing agent. The content of the acidic dye in the acidic hair dyeing agent is preferably 0.01-5wt.%, that of the acid is preferably 1-10wt.% and the content of the carboxyvinyl polymer is preferably 1.5-10wt.%. Preferably, benzyl alcohol is added to the acidic hair dyeing agent and the content is 1-10wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray-type acidic hair dye, and more particularly, to a spray-type acid hair dye having good operability and excellent dyeing properties on hair.

[0002]

2. Description of the Related Art Acid hair dyes are semi-permanent hair dyes for dyeing hair with acid dyes under acidic conditions. However, they have the unfavorable properties of being hardly dyed on hair and very easily dyed on skin. Therefore, it is necessary to wear gloves and use it carefully so that it does not stick to the scalp.

[0003] As the dosage form of this acidic hair dye, liquid, gel and cream forms have been commercialized in view of the above circumstances.

However, there is a problem in that the liquid material is difficult to apply to hair and has dripping after application, so that the efficiency of dyeing on hair is poor. Also, gel-like or cream-like ones require time and effort to apply, and are not operable.

Therefore, in order to improve the operability, it has been studied to convert the gel-like material into an aerosol or mousse-like material into an aerosol, and some of them have been commercialized.

[0006] In these aerosol products, a comb-shaped nozzle is used to make it easier to apply. However, since these are ejected as a thickened dosage form,
It is not suitable for fine operations such as hairline application or application to the root of hair or for partial dyeing. In addition, since mousse is a liquid containing air, the amount of liquid applied is small.
High dyeing power cannot be obtained. Further, in the case of mousse-like ones, there is a problem that a large amount of a surfactant that reduces the dyeing power must be blended, and the amount of a solvent is limited in order to maintain the stability of the dosage form.

[0007] When pursuing only operability without taking into account the properties of the acidic hair dye, it is most suitable to spray a liquid material.
It is not easily put on the scalp, and it cannot be adhered to the hair much.In addition, the acidic hair dye has an unfavorable property that it is hardly dyed on the hair and it is very easily dyed on the skin. It is the limit to aerosolize in such a gel or mousse,
As described above, they are not suitable for fine operations such as application to the hairline and the root and partial dyeing, and have the problem that high dyeing power cannot be obtained. An acidic hair coloring material having excellent adhesion has not been obtained.

[0008]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the conventional acidic hair dyes, and provides an acid hair dye having good operability and excellent dyeing properties on hair. With the goal.

[0009]

According to the present invention, there is provided an acid hair dye containing a carboxyvinyl polymer and dimethyl ether as a propellant, wherein the acid hair dye containing the carboxyvinyl polymer and dimethyl ether are made of a resin. The above-mentioned problem has been solved by putting it in an inner bag and storing it in a spray can.

It is considered that the spray-type acidic hair dye of the present invention has good operability and excellent dyeing properties on hair for the following reasons.

First, in order to make the acidic hair dye suitable for spraying, it is necessary to have the following properties.

It has the property of easily becoming particles so that it can be sprayed in the form of a mist. That is, it has high thixotropy. Good adhesion to hair when sprayed.

In order to have such properties,
It is thought that suitable thickeners are necessary, but with conventional thickeners composed of natural polymers such as xanthan gum and cellulosic polymers such as hydroxypropylcellulose and sodium carboxymethylcellulose, acidic hair dyes are less likely to become particles, Also, when sprayed, it drips from the hair and has poor adhesion to hair, and easily adheres to the scalp.

On the other hand, the carboxyvinyl polymer used in the present invention can be a thickener satisfying the above conditions. That is, the carboxyvinyl polymer makes the acidic hair dye into particles suitable for being sprayed in the form of a mist, has little dripping from hair when sprayed, and has excellent adhesion to hair.

The carboxyvinyl polymer has been used in hair styling gels and the like, but it is obtained by using a small amount of about 0.5% by weight and neutralizing with an alkali agent to increase the viscosity. However, there is no example in which it was not neutralized and was used as a thickener for hair cosmetics in an acidic state.

In the present invention, the carboxyvinyl polymer is used in an acidic state without being neutralized, the blending amount is increased, and a suitable thickening is exhibited.

In the present invention, dimethyl ether is used as a propellant. This dimethyl ether becomes a gas at normal pressure, and therefore cannot be blended in a state other than an aerosol, and has never been used in acidic hair dyes other than foamy ones.

When this dimethyl ether is liquefied and put into an inner bag made of resin together with the acidic hair dye, the dimethyl ether acts as a solvent, and when sprayed, the viscosity of the acidic hair dye is high, so that part of the dimethyl ether remains liquid after spraying for a while. Maintains and acts as a dyeing assistant for hair of acid hair dye, enhances penetration of acid hair dye into hair, and improves dyeing properties.

The inner surface of the spray can is coated to prevent the corrosion of the can. However, since the acidic hair dye has a strong acidity, the corrosion of the can is prevented by the ordinary inner coating applied to the spray can. Occurs.

Therefore, in the present invention, the acidic hair dye is put in a resin inner bag together with dimethyl ether as a propellant to prevent corrosion of the can by the acid hair dye, and to contaminate the acid hair dye based on the corrosion. Has been prevented.

An aerosol product using a resin inner bag is one in which a content liquid is filled into an inner bag, a high-pressure gas is charged outside the inner bag, and the inner liquid is discharged by crushing the inner bag. However, in this embodiment, a highly viscous liquid such as the acidic hair dye of the present invention cannot be sprayed in a mist state.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION The spray-type acid hair dye of the present invention contains, in addition to the carboxyvinyl polymer, acid dyes and acids necessary for the acid hair dye, but these are not particularly limited to specific ones. Without the above, the same as the conventional one can be used.

For example, as the acid dye, black 401
No., Red No. 102, Yellow No. 4, Red No. 227, Purple 40
No. 1, Blue No. 1, Blue No. 205 and the like can be used.

The content of the acid dye in the acid hair dye is not particularly limited, but is preferably 0.01 to 5% by weight, particularly preferably 0.05 to 0.5% by weight. If the content of the acid dye is less than the above, the hair may not be able to be sufficiently dyed.If the content of the acid dye is more than the above, an excessive amount of the acid dye may increase on the surface of the hair. There is a risk that the color will adhere to daily life, and that clothes and the like will be contaminated.

Acids in acid hair dyes mainly act to make the hair cationic and make it easier for the anionic acid dye to be adsorbed to the hair. Examples of the acid include glycolic acid, lactic acid, citric acid and the like. Acid, malic acid, acetic acid, hydrochloric acid, phosphoric acid, etc. can be used,
Particularly, organic acids such as glycolic acid, lactic acid, and citric acid are preferable, and glycolic acid is particularly preferable.

Since glycolic acid has a small molecular weight as an organic acid, it has excellent permeability and has a property like a solvent, which may cause the viscosity of the thickener of the acidic hair dye to decrease with time. Since it is not used, it is very excellent as an acid used for acidic hair dyes.

The content of the acid in the acid hair dye is not particularly limited as long as the acidity of the acid hair dye can be adjusted to pH 2 to about 4, but is not limited to 1 to 10.
% By weight, especially 3 to 7% by weight. When the content of the acid is less than the above, the dyeing power of the acid dye is not sufficiently generated, the color is increased, and the color may be deteriorated.When the content of the acid is more than the above, There is a possibility that the stability of the acid dye may be impaired or the skin may become more irritating.

The content of the carboxyvinyl polymer in the acidic hair dye is not particularly limited, but is preferably 1.5 to 10% by weight, particularly preferably 2 to 4% by weight. If the content of the carboxyvinyl polymer is less than the above, the viscosity is low, there is a possibility that it will easily drip when sprayed, if the content of the carboxyvinyl polymer is more than the above, it becomes difficult to form a mist,
Operability at the time of spray application may be deteriorated.

The acidic hair dye of the present invention preferably contains benzyl alcohol according to a conventional method. This benzyl alcohol acts as a dyeing assistant and improves the hair dyeing effect. However, this benzyl alcohol is not always necessary, and may be used in place of benzyl alcohol as long as it has the same properties as the above-mentioned benzyl alcohol.

When benzyl alcohol is contained, the content thereof in the acidic hair dye is not particularly limited, but is preferably 1 to 10% by weight, particularly preferably 4 to 8% by weight. When the content of benzyl alcohol is lower than the above, the dyeing power may decrease, and when the content of benzyl alcohol is higher than the above, skin irritation may increase.

In addition to the above-mentioned acid dye, acid, carboxyvinyl polymer, and benzyl alcohol, the acid hair dye of the present invention may further include, if necessary, for example, ethanol, diethylene glycol ethyl ether, dipropylene glycol, xanthan gum, and silicone oil. , A fragrance and the like can be contained. The content in these acidic hair dyes is not limited, but when they are contained, ethanol is 10 to 20% by weight, diethylene glycol ethyl ether is 1 to 5% by weight, dipropylene glycol is 0.5% by weight. -5% by weight, xanthan gum 0.1-0.5% by weight, silicone oil 0.1%
To 0.5% by weight, and the flavor is preferably about 0.01 to 0.5% by weight.

The acidic hair dye is prepared by dissolving or dispersing the above components in a medium containing water as a main component.

The mixing ratio between the acidic hair dye and dimethyl ether as a propellant is not particularly limited, but is 90:10 to 50:50, particularly 80:20 to 7 by weight.
0:30 is preferred. When the ratio of the acidic hair dye is higher than the above, the amount of dimethyl ether is too small, so that it may not be sprayed in a mist state or a sufficient dyeing power may not be obtained. May take too long to spray a sufficient amount of liquid.

The resin inner bag is not particularly limited, but is preferably made of polyethylene, polypropylene, or polyethylene terephthalate and has a shape which is in close contact with the inner wall of the spray can. Spray cans are also not limited to particular ones. For example, aluminum, stainless steel, and tin can bodies having an inner surface coated with an epoxy phenol resin, an epoxy urea resin, a polyamide imide resin, or the like as in the past. One having a portion and a normal valve portion can be used.

Next, the spray type acidic hair dye of the present invention will be described with reference to the drawings.

FIG. 1 is a partial cross-sectional view schematically showing one example of the spray-type acidic hair dye of the present invention. In the figure, reference numeral 1 denotes a content liquid composed of a mixture of an acidic hair dye and dimethyl ether as a propellant. The content liquid 1 is placed in an inner bag 2 made of resin, and a can body 3 of a spray can is placed together with the inner bag 2. Housed in
A valve section 4 is attached to an upper portion of the can body section 3.

When the button 5 of the valve section 4 is pressed, the content liquid 1 is spray-applied from the hole 6.

The acidic hair dye in the content liquid 1 comprising a mixture of the above-described acidic hair dye and dimethyl ether contains at least an acid dye, an acid and a carboxyvinyl polymer, and contains a mixture of the acidic hair dye and dimethyl ether. The configuration in which the liquid 1 is put into the resin inner bag 2 and stored in a spray can is the gist of the present invention, but the can body portion 3 and the valve portion 4 of the spray can are particularly specified. It is not limited to one, but may be a known one.

[0039]

Next, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to only these examples.

Examples 1 to 3 and Comparative Example 1 Acid hair dyes having the compositions shown in Table 1 were prepared. The amount of each component in the table is part by weight, and the carboxyvinyl polymer used in Examples 1 to 3 was AQUAPEC manufactured by Sumitomo Seika Co., Ltd.
(Acpec) HV-505 (trade name). Also,
Hydroxypropylcellulose used in Comparative Example 1 is the one most commonly used as a thickener in a conventional acidic hair dye.

[0041]

[Table 1]

The acidic hair dyes of Examples 1 to 3 prepared with the above composition were mixed with dimethyl ether as a propellant according to the following formulation in order to form a spray.

Spraying formulation Acid hair dye 70 parts by weight Dimethyl ether 30 parts by weight

The obtained mixture is placed in a polyethylene inner bag, and the content liquid comprising the mixture of the acidic hair dye and dimethyl ether is stored together with the inner bag in a can body of a spray can. By attaching a valve part and pressing a button of the valve part, the content liquid in the spray can can be sprayed in a mist state.

On the other hand, the acidic hair dye of Comparative Example 1 was filled in a tube as it was, extruded from the tube, and provided for application with a brush (brush).

The spray dyeing hair dyes of Examples 1 to 3 and the acid hair dyeing of Comparative Example 1 obtained as described above were subjected to the following comparative tests of dyeing properties and operability.

Dyeability : Attached white cloth (call number 1) wool (3c) for dyeing fastness test specified in JIS L 0803
Each of the hair dyes was applied in an amount of 10 g to each (m.times.3 cm), allowed to stand at 35.degree. C. for 15 minutes, thoroughly washed with water, dried, and evaluated by visual observation and measurement with a color difference meter (lightness = L ^* ).

In the above-mentioned application, the spray-type acidic hair dyes of Examples 1 to 3 were applied by spraying, and then brushed uniformly with a brush. On the other hand, the acidic hair dye of Comparative Example 1 was applied with a brush. The amount applied is as an acidic hair dye (ie,
In the spray-type acid hair dyes of Examples 1 to 3, the same amount is used only in the acidic hair dye portion excluding dimethyl ether.

Test results: Visual inspection (sensory evaluation) A test cloth dyed with the spray hair dye of Examples 1 to 3 and a test cloth dyed with the acid hair dye of Comparative Example 1 on five panelists were exposed to sunlight. As a result of the comparative evaluation, the test cloths dyed with the spray-type acid hair dyes of Examples 1 to 3 are clearly darker blue than the test cloths dyed with the acid hair dye of Comparative Example 1 Was evaluated as being stained.

Measurement of Color Difference The lightness (L ^* ) of the test cloth after hair dyeing was measured using a color difference meter CR-200 manufactured by Minolta. Table 2 shows the results. In this color difference measurement, the lower the lightness value, the deeper the dye.

[0051]

[Table 2]

As shown in Table 2, the lightness values of Examples 1 to 3 were lower than those of Comparative Example 1, and the spray-type acid hair dyes of Examples 1 to 3 were better than those of Comparative Example 1. It had been shown to stain more intensely.

Operability : Spray acid hair dyes of Examples 1 to 3 and Comparative Example 1 were applied to the entire head of a wig made of human hair (a wig for a hairdresser's perm treatment) for five panelists.
Was applied so as to be 100 g each as an acidic hair dye, and the time required for the application was measured.

For application, the spray-type acidic hair dyes of Examples 1 to 3 were spray-applied to a wig, then combed with a comb and rubbed uniformly, and the total time was taken as the application time. On the other hand, in the case of the acid hair dye of Comparative Example 1, the hair was extruded from a tube, applied to a wig with a brush,
The time required for the application was defined as the application time.

The application time was 5 to 10 minutes in the case of the spray-type acid hair dyes of Examples 1 to 3, but 20 to 30 minutes in the case of the acid hair dye of Comparative Example 1. The spray acid hair dyes of Nos. 1 to 3 were more excellent in operability than the acid hair dye of Comparative Example 1.

When the hair dyeing state of the wig after application, washing and drying of the acid hair dye was visually observed, the wigs dyed with the spray acid hair dyes of Examples 1 to 3 were uniformly dyed. The wig was dyed darker blue than the wig dyed with the acidic hair dye of Comparative Example 1.

[0057]

As described above, according to the present invention, it is possible to provide a spray-type acidic hair coloring material having good operability and excellent dyeing property on hair.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view schematically showing one example of a spray type acidic hair dye of the present invention.

[Explanation of symbols]

1 Content liquid consisting of a mixture of acidic hair dye and dimethyl ether 2 Inner bag made of resin 3 Can body part 4 Valve part

Claims (4)

[Claims] 1. A spray-type acid hair dye comprising: an acid hair dye containing at least an acid dye, an acid and a carboxyvinyl polymer; and dimethyl ether in a resin inner bag and housed in a spray can. 2. The acid hair dye has an acid dye content of 0.01 to 5% by weight, an acid content of 1 to 10% by weight, and a carboxyvinyl polymer content of 1.%.
The spray-type acidic hair dye according to claim 1, which is 5 to 10% by weight. 3. The spray-type acid hair dye according to claim 1, wherein the acid hair dye contains benzyl alcohol. 4. The spray-type acid hair dye according to claim 3, wherein the content of benzyl alcohol in the acid hair dye is 1 to 10% by weight.