JP6579870B2 - Method for producing hair dye - Google Patents

Description

The present invention relates to a method for producing a hair dye which has improved hair dyeing power and can sustain dyeing for a long time.

Conventionally, hair dyes are inferior in hair dyeing power and dyeing durability as compared with hair dyes. Among hair dyes, basic hair dyes containing basic dyes were inferior in hair dyeing power and dyeing sustainability compared to acidic hair dyes containing acidic dyes. The reason is that the bond between the dye and the hair is mainly ionic bond, but since the amount of the dye carried to the hair is small, the absolute amount of the dye bound is also small. This is because the oil component that assists in adsorption does not remain so much after being adsorbed on the surface, and even when the oil component remains, there is a problem that the feel and feel of the oil component are not good.

On the other hand, in order to solve the above-mentioned problems, the absolute amount of the basic dye has been increased or a solvent for dissolving the basic dye has been blended, but satisfactory results have not been obtained.

And when the past patent document was searched retrospectively about the hair dye containing a basic dye, the hair dye shown to the following patent document is well-known.

JP 2012-162466 A

The hair dye described in Patent Document 1 relates to a so-called hair nail polish that permeates and adsorbs the dye into the hair and dyes the hair into a desired color. The hair dye described in Patent Document 1 adsorbs the dye to the hair. Since it does not have means for protecting the periphery of the dye with the carrier after adsorbing to the oil system that is easy to be carried, carrying the dye to the surface and inside of the hair, firmly fixing the hair and the dye to the hair, There was a problem that the hair dyeing power was increased and the dyeing could not be maintained for a long time.

As a result of diligent studies to solve the above problems, the present inventors cannot increase the amount dyed to the hair simply by increasing the absolute amount of the dye system. Adsorb to the system, carry the dye to the surface and inside of the hair, firmly fix the hair and the dye, then protect the surroundings of the dye with the oil system and make a film to firmly fix the dye to the hair When fixed, the hair dyeing power was improved and a hair dye capable of maintaining dyeing for a long time was obtained, and the production method of the present invention was completed.

The present invention is a method for producing a hair dye comprising the following amounts of oil-based material, dyeing material and water-based material,
0.1 to 6.0% by weight of dimethylaminopropylamide stearate described in quasi-drug raw material standard as dimethylaminopropylamide stearate, 2-ethylhexyl palmitate described in quasi-drug raw material standard as oil agent 0-6.0 wt%, C16 higher alcohol as cetanol 1.0-5.0 wt% described in the quasi-drug raw material standard, and food additive officially as dodeca (caprylic acid / capric acid) polyglyceryl-10 An oil-based material obtained by mixing 0.3 to 2.0% by weight of glycerin fatty acid ester described in
BASIC RED76 0.05-0.2% by weight, BASIC BROWN 16 0.01-0.2% by weight and BASIC BLUE99 0.05-0.2% by weight, which are generally known basic dyes as dyeing materials, and In general, HC BLUE No. is a direct dye known as a dyeing material. 2 0.01-0.6% by weight and HC YELLOW No. 2 4 Dyeing material obtained by melting 0.04-0.24 wt% in 40.0 wt% water;
Lactic acid 0.017 to 0.2% by weight described as a quasi-drug raw material standard as a hydroxy acid , 1.3 butylene glycol 0.3-3.0% by weight as a butyric glycol and a preservative An aqueous material obtained by melting 0.3 to 1.5% by weight of phenylethyl alcohol described in the Quasi-drug Raw Material Standard to 36.8 to 54.483% by weight of water,
While heating at 78.0 to 82.0 ° C., respectively, after adding the warmed aqueous material to the warmed oil-based material and emulsifying and stirring, the emulsified and stirred oil-based material and water-based material are The above-mentioned problem has been solved by adopting a method in which a dyeing material is added and stirred and cooled to produce a hair dye.

When the hair dye produced by the method of the present invention is used, the dye is adsorbed to an oil system that easily adsorbs to hair, the dye is carried to the surface and inside of the hair, and the hair and the dye are firmly fixed. Since it is possible to protect the periphery of the dye with an oil system and make a film, the dye can be firmly fixed to the hair, thereby improving the hair dyeing power and maintaining the dyeing for a long time. Can be dyed.

It is a figure which shows the mixture ratio (weight%) of each raw material of the hair dye manufactured by this invention manufacturing method, and the hair dye manufactured by the conventional method. It is a comparison figure of the dyeing fastness of the hair dye manufactured by this invention manufacturing method, and the hair dye manufactured by the conventional method. It is an evaluation comparison figure of the hair dye manufactured by this invention manufacturing method, and the hair dye manufactured by the conventional method.

Examples of the present invention will be described in detail. The present invention relates to a method for producing a hair dye that does not use silicones, which has a higher hair dyeing power than conventional ones and can maintain the dyeing effect for a long time. Adsorb to the system, transport the dye to the surface and inside of the hair, firmly fix the hair and the dye to the hair, then protect the periphery of the dye with the oil system, and firmly fix the dye to the hair By this, it is the manufacturing method of the hair dye which improved the hair dyeing power and was able to continue dyeing for a long time.

The present inventors can use the alkylamine salt as an emulsifier when the dimethylaminopropylamide stearate described in the specifications of raw materials for quasi drugs is an alkylamine salt, and the alkylamine salt. O / W emulsions prepared using as an emulsifier have an anion portion of the counter ion of the proton of the hydroxy acid, so that the basic dye which is a cation becomes a powerful hair dye oriented on the oil-based surface. The test result was confirmed.

Further, the present inventors, when dyeing using the hair dye, when the cation part of the alkylamine salt is adsorbed on the anion part of the hair and the emulsion is destroyed by evaporation of water after adsorption, the oil It was also confirmed that the system covered and protected the dyed part, and as a result, the hair dyeing power was improved and the durability of the dyeing was increased.

Furthermore, when the present inventors add glycerin fatty acid ester described in the Food Additives Official Specification as dodeca (caprylic acid / capric acid) polyglyceryl-10 to the oil system of the emulsion, the oil system covers the dyed portion. As a result, the water repellency of the film formed increases and the dyeing persistence of the dye on the hair extends . It can be improved by blending glycerin fatty acid ester, and by increasing the amount of dye fixed to the hair by refining the oil system of the emulsion, the hair dyeing power can be increased. Also confirmed.

And the hair dye manufactured by the conventional method had the fault that sufficient hair dyeing effect was not acquired because the oil system and dye existed separately in the emulsion. Therefore, the present invention makes it possible to make more dye as a total on the surface of the oil system by refining the oil system in order to solve the disadvantages of the hair dye obtained by the conventional production method. Te, hair many dyes are transported are in adsorption to, and by the hair oil-based adsorbed to evaporation or the like of the water, stearate dimethylaminopropyl amide salt dimethyl stearate quasi-drug raw material specifications described Returning to aminopropylamide, the surfactant function is lost, and the oil system spreads on the surface of the hair, and is a method for producing a hair dye that covers and protects the dye adsorbed on the hair. Details will be described below.

Figure 1 is Oite the present invention production process, each hair dye that is produced by the prescribing 1-5, each material of each hair dye that will be produced by conventional methods ( "oil-based materials", "staining materials", " is a diagram showing the ratio (% by weight) blend of water-based material "), FIG. 2, Oite the present invention production process, has been produced and the hair dye produced by prescription 1-5 by conventional methods hair dye FIG. 3 is an evaluation comparison diagram of each hair dye produced by the production method of the present invention and a hair dye produced by a conventional method.

“Prescription 1” to “Prescription 5” shown in FIG. 1 show the blending ratio when manufacturing the hair dye by changing the blending ratio of each material, and “Conventional method” is for comparison with the manufacturing method of the present invention. It is displayed and shows the blending ratio of each material when manufactured by a conventional manufacturing method.

In the leftmost display column in FIG. 1, an oil-based material column, a dyeing material column, and a water-based material column for producing hair dye are displayed in three stages. In the oil-based material column, dimethylaminopropylamide stearate described in the quasi-drug raw material standard (the product name “Catinal MPAS” manufactured by Toho Chemical Co., Ltd. is used in this example), and quasi-drug as an oil. 2-ethylhexyl palmitate described in the raw material standard (in this example, the product name "Nikkor 10P" manufactured by Nikko Chemicals)
As a higher alcohol having 16 carbon atoms, 2-ethylhexyl palmitate described in the specifications of quasi-drug materials (in this example, the product name “Cetanol” manufactured by Nikko Chemicals) and dodeca (caprylic acid / capric acid are used. ) Each material of the glycerin fatty acid ester described in the Food Additives Official Specification as polyglyceryl-10 (used in this example is the product name "Sun Oil DOC10P" manufactured by Taiyo Kagaku) is displayed for further comparison. Oils used in the conventional method shown (trade name “Nikkor 10P” manufactured by Nikko Chemicals is used in the conventional method), higher alcohols (trade name “Cetanol” manufactured by Nikko Chemicals is used in the conventional method) and Quaternary amine salt (used in the conventional method is Kao's trade name “Coatamine 86P Conch”) Material is being displayed.

In the dyeing material column, “BASIC RED76”, “BASIC BROWN16” and “BASIC BLUE99”, which are generally known basic dyes as color materials, and “HC”, which is generally known as a dye material, are direct dyes. Each color material of “BLUE No. 2” and “HC YELLOW No. 4” is displayed, and water for melting the color material is displayed. In addition, the same material is used for each material displayed in the dyeing material column in the present method and the conventional method shown for comparison.

Further, in the aqueous material column, hydroxy acid as lactic acid (used in this example is a trade name “Musashino Lactic Acid 90F” manufactured by Musashino Chemical Laboratory), butylene glycol as a solvent (used in this example) The water-based material of Daicel Chemical Industries'"1.3BG") and preservative (in this example, the product name "ROSE P" manufactured by Toyoda Fragrance) is displayed, and the water-based material The water that melts the material is displayed. It should be noted that the same material is used for each material displayed in the aqueous material column in the present method and the conventional method shown for comparison.

Then, the inventors manufacture oil-based materials, dyed materials, and water-based materials by mixing according to the blending ratio (% by weight) of each material as shown in “Prescription 1” to “Prescription 5” in FIG. On the other hand, the oil-based material, the dyed material, and the water-based material are heated to 80 ° C., and then the water-based material is added to the oil-based material and emulsified and stirred. A dyeing material was added, stirred and cooled, and a hair dye was produced using the production method of the present invention. In addition, the heating temperature of the oil-based material, dyeing material, and water-based material can achieve its purpose as long as it is in the range of 78 to 82 ° C as a result of the tests by the present inventors. It was confirmed that heating was most preferable, and heating was performed at 80 ° C. in this example.

On the other hand, the present inventors produce oil-based materials, dyed materials, and water-based materials by mixing at a blending ratio (wt%) of each material as shown in “Conventional method” in FIG. After heating the water-based material, dyeing material and water-based material to 80 ° C, respectively, after adding the oil-based material to the water-based material and emulsifying and stirring, the dyeing material is added to the water-based material and oil-based material after the emulsification stirring Then, the mixture was cooled with stirring to produce a hair dye by a conventional method. In addition, the heating temperature of the oil-based material, dyeing material, and water-based material can achieve its purpose as long as it is in the range of 78 to 82 ° C as a result of the tests by the present inventors. It was confirmed that heating was most preferable, and heating was also performed at 80 ° C. in the conventional method.

The difference between the method for producing the hair dye of the present invention and the conventional method for producing the hair dye is that the method of the present invention uses dimethylaminopropylamide stearate described in the quasi-drug raw material standard as dimethylaminopropylamide stearate. On the other hand, the conventional production method uses a quaternary amine salt, and the production method of the present invention further includes glycerin fatty acid ester described in the Food Additives Specification as dodeca (caprylic acid / capric acid) polyglyceryl-10. In contrast to the fact that conventional manufacturing methods do not use this, the order of addition of each material differs. That is, the manufacturing method of the present invention adds a water-based material to an oil-based material after heating each material, and after emulsifying and stirring, then adds a dyeing material, whereas the conventional manufacturing method adds an oil-based material to an aqueous material. However, after emulsification and stirring, there is a difference that a dyeing material is added.

In the production method of the present invention, when an aqueous material is added to the oil-based material, the oil system is separated into water, the oil system is refined in water, and the oil system is refined. It remains in the water as it is, and as a result, more dye is present on the surface of the oil system, so that more dye is carried to the hair. On the other hand, in the conventional manufacturing method, since the order of addition is different, the oil system is not refined and remains in water.

According to the blending ratios shown in “Prescription 1” to “Prescription 5” in FIG. 1, the “dyeing fastness” of the hair dye produced using the method of the present invention, that is, “the color of the dyed yarn is a yak hair bundle. FIG. 2 shows the evaluation results of “comparison”. As shown in FIG. 2, among the hair dyes manufactured according to the blending ratios shown in “Prescription 1” to “Prescription 5”, the hair dyes manufactured according to “Prescription 1” were evaluated as being most excellent. there were. Other hair dyes manufactured according to the blending ratios shown in “Prescription 2” to “Prescription 5” are also evaluated as “Prescription 2” being excellent to some extent, and “Prescription 3” to “Prescription 5” are used as hair dyes. It was evaluation that it can be used normally.

On the other hand, according to the blending ratio shown in “Conventional method” in FIG. 1, the evaluation result of “fastness to dyeing” of the hair dye produced using the conventional method is as shown in FIG. Evaluation that it was clearly inferior to “Prescription 1” to “Prescription 5” produced by using this was obtained.

Next, according to the blending ratios shown in “Prescription 1” to “Prescription 5” in FIG. 1, “Color”, “Gloss”, “Hand” and “Dyeing power” of the hair dye produced using the method of the present invention. FIG. 3 shows the evaluation results comparing the above. As shown in FIG. 3, among the hair dyes manufactured according to the blending ratios shown in “Prescription 1” to “Prescription 5”, the hair dyes manufactured according to “Prescription 1” were evaluated as being most excellent. there were. Other hair dyes produced with the blending ratios shown in “Prescription 2” to “Prescription 5” were also evaluated to be somewhat superior in “Prescription 2” and “Prescription 5”, and “Prescription 3” to “Prescription 4”. It was evaluated that it can be used normally as a hair dye.

In addition, according to the blending ratio shown in “Conventional method” of FIG. 1, the evaluation results comparing the “color”, “luster”, “hand” and “dyeing power” of the hair dye produced using the conventional method are as follows: As shown in FIG. 3, the evaluation that it was clearly inferior to “Prescription 1” to “Prescription 5” produced using the method of the present invention was obtained.

Of the hair dyes manufactured using the method of the present invention in the evaluations shown in FIGS. 2 and 3, those that were evaluated as being excellent overall. It was a hair dye produced according to the blending ratio of “Prescription 1”. Moreover, the hair dye manufactured by the mixing | blending ratio of other "prescription 2"-"prescription 5" was also an evaluation that it was comparatively excellent as a hair dye as a hair dye. Moreover, it was evaluation that the hair dye manufactured by the conventional method was inferior to any hair dye manufactured by the mixture ratio shown to "prescription 1"-"prescription 5" among the above.

Claims (1)

A method for producing a hair dye comprising the blending amount of oil-based material, dyeing material and water-based material shown below,
0.1 to 6.0% by weight of dimethylaminopropylamide stearate described in quasi-drug raw material standard as dimethylaminopropylamide stearate, 2-ethylhexyl palmitate described in quasi-drug raw material standard as oil agent 0-6.0 wt%, C16 higher alcohol as cetanol 1.0-5.0 wt% described in the quasi-drug raw material standard, and food additive officially as dodeca (caprylic acid / capric acid) polyglyceryl-10 An oil-based material obtained by mixing 0.3 to 2.0% by weight of glycerin fatty acid ester described in
BASIC RED76 0.05-0.2% by weight, BASIC BROWN 16 0.01-0.2% by weight and BASIC BLUE99 0.05-0.2% by weight, which are generally known basic dyes as dyeing materials, and In general, HC BLUE No. is a direct dye known as a dyeing material. 2 0.01-0.6% by weight and HC YELLOW No. 2 4 Dyeing material obtained by melting 0.04-0.24 wt% in 40.0 wt% water;
Lactic acid 0.017 to 0.2% by weight described as a quasi-drug raw material standard as a hydroxy acid , 1.3 butylene glycol 0.3-3.0% by weight as a butyric glycol and a preservative and a water-based material a 0.3 to 1.5 wt% phenyl ethyl alcohol quasi-drug raw material specifications described obtained by melt water from 36.8 to 54.483% by weight and,
While heating at 78.0 to 82.0 ° C., respectively, after adding the warmed aqueous material to the warmed oil-based material and emulsifying and stirring, the emulsified and stirred oil-based material and water-based material are A method for producing a hair dye, comprising adding a dyeing material and stirring and cooling to produce a hair dye.

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