JP7520342B2 - Hair dye composition - Google Patents

Description

The present invention relates to a hair dye composition. More specifically, the present invention relates to a hair dye composition containing a specific basic dye.

Hair coloring agents are broadly divided into permanent hair dyes such as oxidative hair dyes that use oxidative dyes, bleaches that lighten hair, semi-permanent hair dyes that use direct dyes, and temporary hair dyes that temporarily color hair. Of these, permanent hair dyes such as oxidative hair dyes that contain oxidative dyes generally contain oxidizing agents and alkaline agents, so while they have strong dyeing power, they have the disadvantage of placing a heavy burden on the hair.

On the other hand, semi-permanent hair dyes are hair dye compositions that contain direct dyes such as basic dyes, acid dyes, and HC dyes, and one type of product is color treatment, which has both hair dyeing and treatment effects. Since cationic surfactants are commonly used in color treatments to impart a treatment effect, when used in combination with acid dyes, the cationic surfactant and acid dye may aggregate, reducing the hair dyeing power. For this reason, the direct dyes used in color treatments are mainly basic dyes and HC dyes, which do not lose their hair dyeing power even when used in combination.

Hair dye compositions such as color treatments have the advantage of being able to suppress damage to hair and scalp compared to oxidizing hair dyes because they do not use oxidizing agents or alkaline agents. On the other hand, hair dye compositions such as color treatments have the problem of inferior hair dyeing power compared to oxidizing hair dyes. In addition, hair dye compositions such as color treatments that contain basic dyes or HC dyes have the problem that the temperature stability of the basic dyes or HC dyes is poor, and the dyeing power decreases over time due to precipitation under low temperature conditions, and the dyeing power decreases over time due to decomposition of the basic dyes or HC dyes under high temperature conditions. In order to solve these problems, there is currently a demand for hair dye compositions that have high hair dyeing power and good hair dyeing power when stored at low temperatures and high temperatures.

In addition, hair dye compositions such as color treatments are in demand for a wide variety of colors to suit the tastes and preferences of consumers, but there is still a shortage of hair dye compositions that have high dyeing power, good dyeing power when stored at low temperatures and high temperatures, and a wide variety of colors.

Patent Documents 1 and 2 propose hair dye compositions that contain combinations of specific basic dyes and HC dyes, such as Basic Blue 75 and HC Blue 2 for blue, Basic Brown 16 and Basic Brown 17 for brown, and HC Yellow 2 and HC Yellow 4 for yellow. Patent Document 3 also proposes hair dye compositions that contain combinations of specific basic dyes, such as Basic Blue 75 or Basic Blue 99 for blue, Basic Red 51 or Basic Red 76 for red, and Basic Brown 16 for brown.

JP 2014-101292 A JP 2017-61451 A JP 2011-190187 A

By using multiple direct dyes to combine the three primary colors of red, blue, and yellow, the color variations are diversified, but in Patent Documents 1 and 2, there are concerns about the dyeing power of HC Yellow 2 and HC Yellow 4 due to dye precipitation when stored at low and high temperatures. Furthermore, since no red-based dyes are contained, the color variations are poor. In Patent Document 3, there are concerns about the dyeing power of Basic Red 76 when stored at low and high temperatures, and the dyeing power of Basic Blue 99 is insufficient. Furthermore, since no yellow-based dyes are contained, the color variations are poor.

The objective of the present invention is to provide a hair dye composition that has excellent hair dyeing power, good hair dyeing power when stored at low temperatures and high temperatures, and a wide range of colors.

As a result of intensive research, the present inventors have found that one or more of the following (A) to (C) can be used:
(B) Basic Blue 75
(C) Basic Yellow 57
The present inventors have found that a hair dye composition containing (D) a polyhydric alcohol and (E) an oily component that is liquid at 25°C solves the above problems, and have completed the present invention.

The present invention provides a hair dye composition that has excellent hair dyeing power, good hair dyeing power when stored at low temperatures and high temperatures, and a wide range of colors.

The present invention is described in detail below.

In this invention, dyeing power refers to the degree of dyeing at room temperature (25°C), high temperature refers to 40°C, low temperature refers to 5°C, and color variation refers to the variety of colors that can be achieved by using various dyes alone or in combination.

The present invention contains (A) Basic Red 51, from the viewpoint of providing excellent dyeing power of basic dyes and good dyeing power when stored at low temperatures and high temperatures.

[Component (A): Basic Red 51]
The component (A) used in the present invention is a red basic dye having the chemical structure shown in Chemical Formula 1 below.

The content of the component (A) used in the present invention is preferably 0.005 to 1% by mass, more preferably 0.008 to 1% by mass, and even more preferably 0.03 to 1% by mass. If the content of the component (A) is less than 0.005% by mass, the hair dyeing power may decrease. If the content of the component (A) exceeds 1% by mass, no further improvement in the hair dyeing power can be expected.

The present invention contains (B) Basic Blue 75, from the viewpoint of providing excellent dyeing power of basic dyes and good dyeing power when stored at low temperatures and high temperatures.

[Component (B): Basic Blue 75]
The component (B) used in the present invention is a blue basic dye having the chemical structure shown in Chemical Formula 2 below.

The content of the (B) component used in the present invention is preferably 0.005 to 0.5% by mass, more preferably 0.01 to 0.5% by mass, and even more preferably 0.03 to 0.5% by mass. If the content of the (B) component is less than 0.005% by mass, the hair dyeing power may decrease. If the content of the (B) component is more than 0.5% by mass, no further improvement in the hair dyeing power can be expected.

The present invention contains (C) Basic Yellow 57, from the viewpoint of providing good dyeing power when stored at low temperatures and high temperatures.

[Component (C): Basic Yellow 57]
The component (C) used in the present invention is a blue basic dye having the chemical structure shown in Chemical Formula 3 below.

The content of the (C) component used in the present invention is preferably 0.05 to 1% by mass, more preferably 0.1 to 1% by mass, and even more preferably 0.5 to 1% by mass. If the content of the (C) component is less than 0.05% by mass, the hair dyeing power may decrease. If the content of the (C) component is more than 1% by mass, no further improvement in the hair dyeing power can be expected.

In the present invention, the components (A), (B), and (C) can be used alone, and furthermore, by using them in combination, it is possible to achieve the effect of having excellent hair dyeing power, good hair dyeing power when stored at low temperatures and high temperatures, and being able to dye hair in a wide variety of colors.

The present invention contains (D) a polyhydric alcohol from the viewpoint of excellent hair dyeing power, and good hair dyeing power when stored at low temperatures and high temperatures.

The component (D) used in the present invention is not particularly limited, but examples thereof include ethylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, 1,3-butylene glycol, glycerin, concentrated glycerin, diglycerin, triglycerin, glucose, maltose, maltitol, sucrose, mannitol, sorbitol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, etc., and the polyhydric alcohol may contain one or more types.

Among the (D) components used in the present invention, ethylene glycol, 1,3-butylene glycol, and glycerin are preferred.

The content of the (D) component used in the present invention is preferably 2 to 10% by mass, more preferably 5 to 10% by mass. If the content of the (D) component is less than 2% by mass, the hair dyeing power and the hair dyeing power during low-temperature storage may deteriorate. If the content of the (D) component is more than 10% by mass, no further improvement in the hair dyeing power can be expected.

The present invention contains (E) an oily component that is liquid at 25°C, from the viewpoint of providing excellent hair dyeing power and good hair dyeing power when stored at low temperatures and high temperatures.

The component (E) used in the present invention is not particularly limited, but may be, for example, α-olefin oligomer, liquid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, stearyl stearate, hexyl laurate, myristic Examples include myristyl lactate, decyl oleate, hexyldecyl dimethyloctanoate, triisodecyl myristate, isostearyl myristate, 2-ethylhexyl palmitate, lauryl lactate, myristyl lactate, cetyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexylate, dipentaerythritol fatty acid ester, cetyl caprate, glyceryl tricaprylate, neopentyl glycol dicaprate, and diisostearyl malate, and the oily component that is liquid at 25°C can contain one or more types.

Among the components (E) used in the present invention, 2-ethylhexyl palmitate and liquid paraffin are preferred, and 2-ethylhexyl palmitate is even more preferred.

The content of the component (E) used in the present invention is preferably 1 to 10% by mass, more preferably 2 to 10% by mass, and even more preferably 5 to 10% by mass. If the content of the component (E) is less than 1% by mass, there is a risk of a decrease in hair dyeing power and a decrease in hair dyeing power when stored at low temperatures and high temperatures. If the content of the component (E) exceeds 10% by mass, no further improvement in hair dyeing power can be expected.

The hair dye composition of the present invention may contain basic dyes, HC dyes, and various other direct dyes other than the above components (A) to (C) as long as the effects of the present invention are not impaired.

Examples of basic dyes other than the components (A) to (C) include Red No. 213, Red No. 214, Basic Blue 3, Basic Blue 6, Basic Blue 7, Basic Blue 26, Basic Blue 41, Basic Brown 4, Basic Brown 16, Basic Brown 17, Basic Green 1, Basic Green 4, Basic Orange 1, Basic Orange 2, Basic Orange 31, Basic Red 1, Basic Red 2, Basic Red 22, Basic Red 46, Basic Red 76, Basic Purple 1, Basic Purple 2, Basic Purple 3, Basic Purple 10, Basic Purple 16, Basic Yellow 11, Basic Yellow 28, Basic Yellow 87, etc.

Examples of the HC dyes include 2-amino-6-chloro-4-nitrophenol, 2-amino-3-nitrophenol, 4-amino-3-nitrophenol, 3-methylamino-4-nitrophenoxyethanol, 4-hydroxypropylamino-3-nitrophenol, HC Blue 2, HC Blue 6, HC Blue 9, HC Blue 11, HC Blue 12, HC Blue 13, HC Blue 15, HC Orange 1, HC Orange 2, HC Orange 3, HC Red 1, HC Red 3, HC Red 8, HC Red 11, HC Purple 1, HC Purple 2, HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, HC Yellow 11, HC Yellow 14, and HC Yellow 15.

In addition to the essential components, the hair dye composition of the present invention may contain at least one selected from various components used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc., within the scope of not impairing the effects of the present invention, such as direct dyes, acid dyes, surfactants, polymeric compounds, oily components other than component (E), moisturizers, thickeners, medicinal ingredients, protein derivatives, hydrolyzed proteins, amino acids, metal sequestering agents, antioxidants, plant extracts, herbal extracts, vitamins, preservatives, dyes, pigments, powders, pH adjusters, UV absorbers, fragrances, etc. However, the components are not limited to these examples.

The hair dye composition of the present invention is used in the form of a emulsion, cream, etc., and from the viewpoint of application, the cream form is preferred.

The viscosity of the hair dye composition according to the present invention is not particularly limited, but from the viewpoint of ease of dispensing from a container and ease of application, the viscosity is preferably 3000 to 50000 mPa·s under conditions of 20°C. If the viscosity is less than 3000 mPa·s or more than 50000 mPa·s, there is a risk that it may be difficult to dispense from a container and apply to hair.

The viscosity of the hair dye composition of the present invention at 20°C was measured by filling a sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) with 120 g of the hair dye composition prepared by a conventional method, leaving it to stand at 20°C for 24 hours, and then rotating it at 12 rpm for 1 minute using a helical stand-equipped B-type viscometer (Model: Digital Viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with an M4 rotor.

The pH of the hair dye composition of the present invention is preferably 3 to 6, and more preferably 4 to 6, at 20°C in order to provide excellent hair dyeing power and good hair dyeing power when stored at high temperatures. If the pH is less than 3, the hair dyeing power may deteriorate. If the pH is more than 6, the hair dyeing power may deteriorate when stored at high temperatures.

The pH of the hair dye composition of the present invention at 20°C is obtained by filling a sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) with 120 g of the hair dye composition prepared by a conventional method, leaving it at 20°C for 24 hours, and then measuring the pH of the original solution with a glass electrode type hydrogen ion concentration indicator (F-71, manufactured by Horiba, Ltd.).

The hair dye composition used in the present invention is filled into various containers such as plastic containers, aluminum tube containers, aerosol containers, pouch containers, and jar containers, and is stored until use.

The present invention will be described in more detail below with reference to examples, but these are not intended to limit the present invention in any way. Numerical values are mass % unless otherwise specified.

In the evaluation tests shown in this specification, "hair dyeing power," "hair dyeing power when stored at low temperatures," and "hair dyeing power when stored at high temperatures" were evaluated using the following methods.

"Hair dyeing power"
1 g of the hair dye composition according to each Example and Comparative Example was evenly applied to 1 g of a 100% gray hair bundle (product number: BM-W-A, manufactured by Bealux Co., Ltd.). After leaving it for 5 minutes, it was thoroughly rinsed with water and the hair bundle was dried using a hair dryer to prepare a hair bundle for evaluation. The hair bundle was visually evaluated by 15 expert panelists according to the following criteria.
<Evaluation criteria>
⊚: 12 or more out of 15 people have excellent hair dyeability.
Good: 8 to 11 out of 15 people said the product had excellent dyeing power.
△: 4 to 7 out of 15 people feel that the hair dyeing ability is excellent.
×: 3 or less out of 15 people feel that the hair dyeing ability is excellent.

"Hair dyeing power when stored at low temperatures"
120 g of the hair dye composition according to each Example and Comparative Example was placed in a sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) and stored in a thermostatic chamber at 5° C. for 30 days. Each stored hair dye composition was returned to room temperature (25° C.), and 1 g of each hair dye composition was uniformly applied to 1 g of a 100% gray hair bundle (product number: BM-W-A, manufactured by Bealux Co., Ltd.). After leaving it for 5 minutes, it was thoroughly rinsed with water and the hair bundle was dried using a hair dryer to prepare a hair bundle for evaluation. A professional panelist visually evaluated the hair dye composition according to the following criteria in comparison with the hair dye composition stored at room temperature (25° C.).
<Evaluation criteria>
◯: The dyeing power is equivalent to that of hair dyed when stored at room temperature (25° C.).
×: The dyeing power is poor compared to hair dyed after storage at room temperature (25° C.).

"Hair dyeing power when stored at high temperatures"
120 g of the hair dye composition according to each Example and Comparative Example was placed in a sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) and stored in a thermostatic chamber at 40° C. for 30 days. Each stored hair dye composition was returned to room temperature (25° C.), and 1 g of each was uniformly applied to 1 g of a 100% gray hair bundle (product number: BM-W-A, manufactured by Bealux Co., Ltd.). After leaving it for 5 minutes, it was thoroughly rinsed with water and the hair bundle was dried using a hair dryer to prepare a hair bundle for evaluation. The hair dye compositions were compared with those stored at room temperature (25° C.) and visually evaluated by one expert panelist according to the following criteria.
<Evaluation criteria>
◯: The dyeing power is equivalent to that of hair dyed when stored at room temperature (25° C.).
×: The dyeing power is poor compared to hair dyed after storage at room temperature (25° C.).

"Color"
1 g of each hair dye composition according to each Example and Comparative Example was evenly applied to 1 g of a 100% gray hair bundle (product number: BM-W-A, manufactured by Bealux Co., Ltd.). After leaving it for 5 minutes, the hair bundle for evaluation was thoroughly rinsed with water and dried using a hair dryer, and then visually evaluated by one expert panelist.

Examples 1 to 6 shown in Table 1 show excellent hair dyeing power and good low-temperature and high-temperature stability. Comparative Examples 1 to 4 did not show results that satisfied all of the criteria of excellent hair dyeing power and good dyeing power when stored at low temperatures and high temperatures. This is thought to be due to the decrease in dyeing power caused by precipitation of the dye during storage at low temperatures.

Examples 7 to 13 shown in Table 2 show excellent hair dyeing power, and good hair dyeing power when stored at low temperatures and high temperatures. Comparative Examples 5 to 7 did not show results that met all of the criteria of excellent hair dyeing power and good hair dyeing power when stored at low temperatures and high temperatures. In Comparative Examples 5 and 6, Basic Blue 99 and HC Blue 2 did not have sufficient hair dyeing power at small amounts, and in Comparative Example 7, precipitation of the dye occurred when stored at low temperatures, which is thought to be the reason why the hair dyeing power decreased.

Examples 14 to 17 shown in Table 3 have excellent dyeing power, and show good results in terms of dyeing power when stored at low temperatures and high temperatures. Comparative Examples 8 and 9 did not show good results in terms of dyeing power when stored at low temperatures and high temperatures. This is thought to be due to the dye precipitation that occurred when stored at low temperatures, which reduced the dyeing power.

Examples 18 to 23 shown in Table 4 show that by combining components (A) to (C), the product has excellent hair dyeing power, good hair dyeing power when stored at low temperatures and high temperatures, and can produce a wide variety of colors.

Examples 24 to 28 shown in Table 5 have excellent hair dyeing power, and good hair dyeing power when stored at low temperatures and high temperatures. Comparative Example 10 did not achieve results that satisfied all of the criteria of excellent hair dyeing power, good hair dyeing power when stored at low temperatures and high temperatures. This is thought to be due to the decrease in hair dyeing power caused by precipitation of the dye when stored at low temperatures and high temperatures.

Examples 29 to 33 shown in Table 6 have excellent hair dyeing power, and good hair dyeing power when stored at low temperatures and high temperatures. Comparative Example 11 did not show excellent hair dyeing power, or good hair dyeing power when stored at low temperatures and high temperatures. This is thought to be due to the dye precipitation that occurred when the dye was stored at low temperatures and high temperatures, which reduced the hair dyeing power.

<Example 34>
Component Content (mass%)
(A) Basic Red 51 0.030
(B) Basic Blue 75 0.040
(C) Basic Yellow 57 0.500
(D) Ethylene glycol 4.500
(D) 1,3-butylene glycol 2.700
(D) Glycerin 1.800
(E) 2-Ethylhexyl palmitate 2.500
(E) Liquid paraffin 2.500
Citric acid 0.025
Sodium citrate 0.110
Cetanol 4.200
Stearyl alcohol 1.800
Stearyltrimethylammonium chloride 2.500
Methyl parahydroxybenzoate 0.200
Purified water 76.595
Total 100.000
The hair dye composition shown in Example 34 has a viscosity of 15,500 mPa·s at 20° C., a pH of 4.7 at 20° C., and a reddish brown color.

The present invention provides a hair dye composition containing a specific basic dye, which has excellent hair dyeing power, good hair dyeing power when stored at low temperatures and high temperatures, and a wide range of colors.

Claims (1)

One or more selected from the following components (A) to (C): (A) Basic Red 51
(B) Basic Blue 75
(C) Basic Yellow 57
and (D) one or more selected from ethylene glycol, 1,3-butylene glycol, and glycerin.
(E) 2-ethylhexyl palmitate
The hair dye composition contains the above-mentioned (A) component in an amount of 0.03 to 1 mass %, the above-mentioned (B) component in an amount of 0.03 to 0.5 mass %, the above-mentioned (C) component in an amount of 0.5 to 1 mass %, the above-mentioned (D) component in an amount of 5 to 10 mass %, and the above-mentioned (E) component in an amount of 5 to 10 mass % .