JPH0291015A - Hair dyeing composition - Google Patents

Abstract

PURPOSE:To obtain a readily usable hair dyeing composition, containing emulsified squalene, squalanes and tar-based acid dye and excellent in durability and dyeing properties with high safety without causing dermatopathy and impairing natural feeling or gloss. CONSTITUTION:A hair dyeing composition containing one selected from emulsified squalene, squalane and partially hydrogenated squalane and a tar-based acid dye. The squalene, etc., are used in an amount of 0.1-20 times based on the tar-based acid dye. The squalene and squalane collected from liver oil of fishes, such as shark, or synthetic product, or collected from plants, such as olive, are used. The squalenes are emulsified by using a nonionic, ampholytic and nonionic surfactants.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a safer method for dyeing human hair or animal hair such as dog or cat hair, which causes less skin damage and gives a natural texture, and which also allows hair washing. This invention relates to a highly durable hair dye composition that does not come off easily.

(Prior art and problems to be solved) Conventional hair dyeing methods use an oxidative dye, typically an aromatic amino compound such as paraphenylene diamine, as the first agent, and hydrogen peroxide as an oxidizing agent. At the time of use, the first agent and the second agent are mixed and applied to the hair, allowing the oxidative dye molecules to penetrate into the hair and treating the hair with oxygen during the nascent period when hydrogen peroxide is generated. There is a known method for dyeing hair by decolorizing the hair and oxidatively polymerizing the oxidative dye to develop color.The first component of such a hair dye is generally used to swell the hair so that the dye molecules enter the inside of the hair. Alkaline agents such as ammonia and amines are blended to facilitate the penetration of hydrogen peroxide and to promote the generation of nascent oxygen from hydrogen peroxide, thereby improving the hair dyeing effect. .

However, such hair dyes have various problems when used. For example, the pH of the first part is 9 due to the addition of an alkaline agent.
It has a very high pH, usually 10 to 11, and is highly irritating. In addition, when using ammonia as an alkaline agent, its strong pungent odor may cause discomfort during use.
There is a problem in that it is difficult to impart fragrance with fragrances. Furthermore, hair is easily damaged by the combination of alkaline agents, and in particular, amines are often non-volatile and tend to remain in the hair after use, causing the hair to lose its luster and reduce its tearing strength. The same problem with using hydrogen peroxide as with garlic, which has the problem of dryness. In other words, the bleaching effect of hydrogen peroxide causes not only hair damage but also scalp rash. On the other hand, when used to dye gray hair, there is also the problem that even black hair is bleached, leaving the entire hair in a faded state.

In addition, an even more important issue is that p-phenylenediamine, a typical oxidative dye, is known to cause dermatitis, and some similar substances are carcinogenic to laboratory animals. Some have even been confirmed.

On the other hand, a safer hair dyeing method is to use tar-based acid dyes as a dyeing agent, but this method is still used because it is inferior to methods using oxidative dyes in terms of dyeing power and durability of the hair after dyeing. Not enough. For example, the tar-based dyes stipulated in the Ministry of Health and Welfare's notification ``Ministerial Ordinance Specifying Tar-based Dyes That Can Be Used in Pharmaceutical Products, etc.'' are of course safe, but conventional hair dyeing using these dyes has not always been sufficient. . Some of these have been put to practical use, including hair dyes made by dispersing or dissolving acidic dyes in benzyl alcohol, but benzyl alcohol is unfavorable due to its unpleasant odor and its dyeing property itself. is not always sufficient.

Therefore, the present invention provides a hair dyeing method that is hygienically safe for the human body without damaging the hair or causing rashes on the scalp, and which exhibits dyeing performance that is comparable to that using conventional oxidative dyes. The present invention provides a composition for use.

[Means to solve the problem]

That is, the present invention provides a hair dye for dyeing human hair or animal hair such as dog or cat hair, which is made of an emulsified screen, squalane, or at least one partially hydrogenated screen and a tar-based acid dye. composition for use.

The invention will be further explained below.

The present invention uses screen, squalane, or a partially hydrogenated product of screen. Screen and squalane can be obtained from the liver oil of fish such as sharks, from plants such as olives, or synthetic products (including fully hydrogenated products of screen) can be used. A mixture of these can also be used. The partially hydrogenated product of the screen is produced by hydrogenating the screen using a catalyst in a conventional manner. Although these may be used in combination, from the viewpoint of oxidative stability, squalane or a partially hydrogenated screen material having an iodine value of 3 or less is preferred.

In the present invention, screen, squalane, or a partially hydrogenated product of screen is emulsified and used. Since these are hydrophobic, their performance cannot be exhibited unless they are emulsified.

Surfactants used include nonionic surfactants, amphoteric surfactants, and anionic surfactants, and these may be used in combination. Specifically, polyoxyethylene alkyl phenyl ether sodium phosphate, polyoxyethylene oleyl ether, polyoxyethylene polyoxyopropylene glycol, polyoxyethylene polyoxybrobylene cetyl ether, polyoxyethylene lauryl ether, monostearic acid Examples include glycerin, sorbitan monostearate, and polyoxyethylene sorbitan monolaurate.

The amount of these surfactants used is 1 to 200 parts by weight, preferably 1 to 100 parts by weight, per 100 parts by weight of screen, squalane, or partially hydrogenated squalene.

Further, the hair dye used here is a tar-based acid dye. These are dyes whose safety for the human body has been confirmed as approved for use in external medicines and cosmetics according to the Ministry of Health and Welfare notification. Furthermore, tar-based acid dyes are preferred because they are used in weakly acidic conditions and are less likely to cause damage to the hair or scalp.

Specifically, these are, for example, legal dye black No. 401 (
Chemistry 228-Amino-7-valanito Ophenylazo-2
- Sodium salt of phenylazo-1-naphthol-3,6-disulfonic acid), Yellow No. 4 (chemical name; trisodium salt of 3-carboxy-5-hydroxy-1-parasulfophenyl-4-parasulfophenyl azopyrazole) )
, Yellow No. 5 (chemical name: 1-parasulfophenylazo-2
- disodium salt of naphthol-6-sulfonic acid), Red No. 2 (chemical name: trisodium salt of 1-(4-sulfo-1-naphthylazo)-2-naphthol-3,6-disulfonic acid), Red 102 No. 1 (chemical name: trisodium salt of 1-(4-sulfo-1-naphthylazo)-2-naphthol-6,8-disulfonic acid), Blue No. 1 (chemical name: 4
- (4-N-ethyl-m-sulfobenzylamino)phenyl) (2-sulfoniumphenyl)methylene (1
(N-ethyl-N-m-sulfobenzyl)2.5 Δ-cyclohexadieminine disodium salt),
Purple No. 401 (chemical name: mono-1-lium salt of 1-hydroxy-4-(0-sulfo-toluino) anthraquinone) is exemplified.

These tar-based acid dyes are usually water-soluble and are used as they are, but they may also be dispersed in water using the surfactant.

It is important to use screen, squalane, or partially hydrogenated squalene in an amount of 0.1 to 20 times, preferably 1 to 5 times, the total solid content of the tar-based acid dye. be.

If the amount of screen, squalane, etc. is less than this, the effect of adding screen, squalane, etc. cannot be obtained, and on the other hand, if it exceeds the above range, the effect of adding screen, squalane, etc. cannot be obtained. ω increases unnecessarily, which is not preferable.

Since a tar-based acid dye is used, the acidity of the hair dye composition of the present invention is adjusted to be weakly acidic using an acid, preferably an organic acid. For such acidity adjustment, malic acid, lactic acid, etc. are usually preferably used.

In addition, the composition of the present invention may contain solvents and thickeners that are commonly used in hair dyes.

Examples of solvents include alcohols such as benzyl alcohol, ethyl alcohol, isopropyl alcohol, and butyl alcohol, ketones such as acetone, ethers such as ethyl ether, lower alkylene carbonates such as ethylene carbonate and propylene carbonate, and N-methyl. N-alkylpyrrolidones such as pyrrolidone, hydrocarbons such as liquid paraffin and liquid isoparaffin, orange essential oil, jojoba oil, etc. can be used in appropriate types and amounts. Thickeners include cellulose resins such as human O-oxymethyl or ethylcellulose, higher fatty acids such as stearic acid, higher alcohols such as cetanol, beeswax, wood wax, carnabala, lanolin,
Examples include waxes such as animal and vegetable waxes such as shellac, hydrocarbon waxes such as ceresin, paraffin wax, microcrystalline wax, and polyethylene wax.

Of course, known additives such as natural or synthetic fragrances, antioxidants, and fungicides used in ordinary cosmetics can also be added as appropriate.

The composition of the present invention can be prepared as an aqueous solution, an emulsion, or an emulsion according to a conventional method.
It can be used in the form of cream, paste, gel, etc., shampoo type, treatment type,
It can be used as a pre-treatment type hair dye. For example, an aqueous solution type is produced and used as follows. That is, the tar-based acidic dye is emulsified or dissolved in squalene or the like using a surfactant by appropriately adding a solvent, and then made weakly acidic with an acidity regulator such as lactic acid and diluted with water. Squalene or the like may be used as a pre-emulsified product, or may be emulsified when preparing the hair dye composition. Preferably, it is appropriate to use an emulsion such as squalene which has been pre-emulsified. Hair that has been thoroughly washed with a detergent (shampoo) or the like is dipped or applied with the produced hair dye composition. The temperature can be increased appropriately. Usually, a temperature of about 40°C for ten minutes is sufficient. Conventional hair dye compositions could not exhibit sufficient performance unless heated to a high temperature of 50°C.

After soaking or applying, shampoo your hair thoroughly and then wash your hair with water to dye your hair. This hair dyeing operation can be repeated multiple times if necessary.

The present invention will be explained in detail with reference to Examples below.

(Example) Example 1 Hair dye compositions (I) to (■) listed in Table 1 were prepared,
This was used to dye the hair. Then, the degree of dyeing of the dyed hair was measured. In both cases, squalene and partially hydrogenated squalene were emulsified with a surfactant.

Composition (IV) is a comparative example in which benzyl alcohol was used in place of the partially hydrogenated squalene.

(Method for measuring degree of dyeing) 3 g of bleached hair was immersed in a 40°C dye bath containing each of the above compositions for 10 minutes, then shampooed, washed with water, and dried, and this process was repeated twice. Ta. Thereafter, the reflectance was measured using a reflection type spectrophotometric colorimeter (manufactured by Murakami Color Research Institute) to evaluate the degree of dyeing.

The evaluation method was to determine the attenuation rate of reflectance between wavelengths of 400 to 700 nl, and the average value was taken as the degree of dyeing.

That is, after soaking each composition, the reflectance of the dried hair after washing off the attached dye by rinsing lightly with water was set to 100, and the degree of attenuation of the reflectance was determined from this as the attenuation rate (%).

The results are shown in Table 1.

Table 1 Hair dye composition (I) (I) (old (1111) (IV)
Statutory Dye No. 401 Squalene Hydrogenated Squalene Benzyl Alcohol Polyoxyethylene Lauryl Ether Stearate Hydroxyethyl Cellulose 5.0 5.0 5.0 9.0 7.5 7.5 4.0 4.0 4.0 5.02 .0 2.
0 2.0 2.04.0 4.0 4.0
8.05.0 Total 100.0 100.0 100.0 100.0 1
00.0 Note: The iodine number of partially hydrogenated squalene is less than 1.

Numbers indicate parts by weight.

In both compositions, p+ was adjusted to 4.3 with lactic acid.

Examples 2 to 6, Comparative Examples 1 to 3 The compositions of the present invention (compositions (V) and (Vl)) are shown in Table 2 below.
It was prepared into a cream type using the formulation described in .

For comparison, three types of commercially available products that specify the use of cream-type tar-based acid dyes were used (composition (Vl),
(■), (■)). In addition, the commercially available composition (Vi) is
The use of Black No. 401, Purple No. 401, and benzyl alcohol is specified, and the commercially available composition (■) also specifies the use of Yellow No. 5, Purple No. 401, and benzyl alcohol, so all of them are benzyl. There was an unpleasant smell of alcohol.

(Test of Dyeing Power) Bleached hair was washed with shampoo and water beforehand, spread on a wrap film, and one coat of each composition was applied uniformly onto the hair using a brush. After application, it was wrapped in a wrap film and kept moist for 10 minutes at 40°C in a high-temperature dryer. Thereafter, it was shampooed, washed with water, and dried, and this process was repeated twice.

The dyeing strength test was conducted in the same manner as in Makki Examples, and the attenuation rate (%) was determined. The results are shown in Table 2.

Table 2 Hair dye composition (parts by weight) Black No. 401 Yellow No. 5 Red 102 @ Purple No. 401 Squalane emulsion *1 Butanol cream base *2 Lactic acid l ■ ■ Squalane emulsion 1; Squalene with an iodine value of 1 or less An emulsion obtained by emulsifying 20% by weight of the following in water using polyoxysorbitan oleate.

Cream base book 2: Setanol liquid paraffin oleyl alcohol polyoxyethylene stearyl ether (15EO) with the following composition as a cream base Total 100.0 100.0 Hue Black, slightly reddish black, chestnut black, bluish black Shampoo for shampooing Color fading over time *3: ◎ Almost no color fading.

0 Slight discoloration.

8. A lot of discoloration.

[Effects of the present invention]

Tar-based acid dyes have conventionally been known to be used in combination with benzyl alcohol as hair dyes, but these have been insufficient in terms of unpleasant odors, dyeability, and durability.

However, as in the present invention, squalene, squalane,
Alternatively, a practically satisfactory result was achieved for the first time by using a squalene partially hydrogenated substance and a tar-based acid dye in combination.

The composition of the present invention has such good properties! Although the reason is not clear, tar-based acid dyes are able to penetrate into hair tissue due to the excellent penetration of squalene, squalane, or squalene partially hydrogenated into animal tissues such as human hair and animal hair such as dog and cat hair. It can be reliably penetrated and fixed, and therefore, when the hair dye composition of the present invention is used, the dyeing power and durability after dyeing are significantly improved, and it has reached the level of practical use as a hair dye. Presumed.

Furthermore, by using squalene, squalane, or a squalene partially hydrogenated product, the hair dye composition according to the present invention can obtain sufficient dyeing power without using benzyl alcohol, which has an unpleasant odor, and is superior to conventional commercially available products. It is possible to dye the hair even at a relatively lower operating temperature than that of the hair dye composition. This is also due in large part to the excellent permeability of squalene, squalane, or partially hydrogenated squalene to animal tissues such as human hair, animal hair such as dog and cat hair.

Furthermore, it is highly safe because it uses highly safe tar-based acidic dyes, and its use 1) Since the H region is also weakly acidic, it is less likely to cause damage to the hair or scalp. Of course, it is well known that substances such as squalene are highly safe for the human body, including the scalp, and have no problems with odor.

Therefore, the hair dye composition of the present invention not only has excellent dyeing properties and dye resistance, but also has extremely high safety. Moreover, when the hair dyeing composition of the present invention is used, the natural texture and luster are not impaired.

In addition, it is convenient because there is no need for complicated labor such as mixing two types of chemicals on the surface to be used, as in the case of conventional oxidation dyes.

As is clear from the above description, the hair dyeing composition of the present invention is most suitable for dyeing human hair, animal hair of dogs and cats, and the like.

Claims (1)

[Scope of Claims] (1) A hair dyeing composition comprising at least one selected from emulsified squalene, squalene, and partially hydrogenated squalene and a tar-based acid dye. (2) Squalene for tar-based acid dyes,
0.0% squalane or partially hydrogenated squalene.
The composition according to claim 1, wherein the composition is used in an amount of 1 to 20 times by weight. (3) The composition according to claim 1, which is emulsified with any one of a nonionic surfactant, an anionic surfactant, and an amphoteric surfactant. (4) The composition according to claim 1, which contains a thickener selected from cellulose resins, higher alcohols, and higher fatty acids. (5) The composition according to claim 1, which contains either alcohol or liquid paraffin as a solvent. (6) The composition according to claim 1, wherein the partially hydrogenated squalene has an iodine value of 3 or less.