Hair dye composition free of alkali agents, using basic amino acid

Abstract

To provide a hair dye composition free of alkali agents, using a basic amino acid.SOLUTION: A hair dye composition free of alkali agents, using basic amino acids, according to one embodiment of the technical concept of the present invention comprises purified water, emulsifier, polyquaternium-10, vitamin C, EDTA 2 Na, animal hydrolysate, glycerin, L-arginine, free L-lysine, p-phenylenediamine, p-aminophenol, meta-aminophenol, resorcinol, and fragrance. Through this composition, the alkali agent-free hair dye composition using basic amino acids in various embodiments of the technical concept of the present invention can prevent skin damage, itching, rash, and vision decline caused by frequent dyeing to cover gray hair in elderly people in particular, enhance dyeability and dye durability, and maintain healthy hair without irritating a scalp.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an alkali-free hair dye composition using a basic amino acid, and more particularly to an alkali-free hair dye composition using a basic amino acid that can prevent damage to hair caused by dyeing, reduce the generation of irritating odors, soothe the scalp, and alleviate skin inflammation to improve the health of the hair and scalp. [Background technology]

[0002] Hair dyes are usually made by mixing a certain ratio of a first agent, which uses an alkaline component to swell the hair, allowing the dye to easily diffuse and penetrate into the hair, and a second agent, which promotes the generation of oxygen necessary to oxidize the dye, resulting in desirable hair dyeing.

[0003] Dyeing with these hair dyes involves breaking down the melanin pigment present between the keratin fibers in the hair follicle using dyes containing chemical ingredients and hydrogen peroxide, thereby changing the properties and structure of the hair, so damage to the hair is unavoidable.

[0004] Meanwhile, in recent years, the number of consumers who dye their own hair has increased significantly, and in addition, the expected life expectancy of humans has increased in conjunction with medical advances, the rate of aging has accelerated rapidly around the world, and the elderly are increasingly socially active. Accordingly, unlike in the past, elderly people are increasingly concerned about their appearance, but in particular, frequent dyeing of hair to hide gray hair by elderly people is causing skin damage and an increasing incidence of dermatitis, facial edema, and other skin problems such as itching, rashes, and impaired eyesight.

[0005] In this way, the use of hair dyes can cause minor allergies such as scalp itching and inconvenience, and in some severe cases, symptoms may suddenly appear and patients may be hospitalized. As the number of cases of such allergic symptoms is increasing, efforts are being made to develop hair dyes with a wide variety of compositions to solve these problems.

[0006] Related prior art includes the "permanent hair dye that does not cause allergic skin reactions" in Patent Document 4, the "hair dye composition" in Patent Document 5, the "hair dye composition containing herbal extract" in Patent Document 6, and the "hair dye composition and its manufacturing method" in Patent Document 7.

[0007] For example, Patent Document 4 discloses a permanent hair dye that does not cause allergic reactions on the skin. The document proposes a composition that uses a dye selected from direct dyes (tar dyes), nitro dyes, and natural dyes as a hair dye, which is designed not to cause allergic reactions on the skin, but allows the dye to easily penetrate into the hair and provides excellent retention of hair color after dyeing.

[0008] As another example, Patent Document 5 discloses a hair dye composition containing henna, indigo, centaurea, rhubarb, lichen or litmus. The hair dye composition disclosed in the patent is said to be useful for hair color, hair condition and hair quality by using natural dyes and natural materials instead of chemical dyes, and to be able to protect hair from the harsh action of alkaline and oxidizing agents.

[0009] Therefore, the present inventors have conducted intensive research to find a hair dye composition that has excellent related efficacy, such as improving dyeability and fastness while not irritating the scalp. As a result, they have discovered that by forming a hair dye composition using a basic amino acid, it is possible to improve dyeability and fastness, not irritate the scalp, and keep hair healthy, and have completed the present invention. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Korean Patent No. 10-1076913 [Patent Document 2] Korean Patent No. 10-1398008 [Patent Document 3] Korean Patent No. 10-1828022 [Patent Document 4] Korean Patent No. 10-0366757 [Patent Document 5] Korean Patent No. 10-0453679 [Patent Document 6] Korean Patent No. 10-0608711 [Patent Document 7] Korean Patent No. 10-0625180 Summary of the Invention [Problem to be solved by the invention]

[0011] The problem to be solved by the present invention is to provide an alkali-free hair dye composition using a basic amino acid that can prevent damage to hair caused by dyeing, reduce the generation of irritating odors, soothe the scalp, and alleviate skin inflammation to improve the health of hair and scalp.

[0012] In addition, the problem to be solved by the present invention is to provide an alkali-free hair dye composition using a basic amino acid that prevents skin damage, itchiness, rashes, and decreased eyesight, which are caused particularly by frequent dyeing to hide gray hair among the elderly, improves dyeability and fastness of the dyed hair, and also keeps the hair healthy without irritating the scalp.

[0013] The various problems that the present invention aims to solve are not limited to the problems described above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0014] In one embodiment of the technical concept of the present invention, an alkali-free hair dye composition using a basic amino acid is disclosed.

[0015] The alkali-free hair dye composition using the basic amino acid contains purified water, an emulsifier, polyquaternium-10, vitamin-C, EDTA 2Na, an animal hydrolysate, glycerin, L-arginine, free L-lysine, paraphenylenediamine, paraaminophenol, meta-aminophenol, resorcinol and a fragrance.

[0016] Specific details of other embodiments are included in the detailed description. Effect of the Invention

[0017] The alkaline agent-free hair dye composition using a basic amino acid according to various embodiments of the technical concept of the present invention can prevent damage to hair caused by dyeing, reduce the generation of irritating odors, soothe the scalp, and relieve skin inflammation, thereby improving the health of the hair and scalp.

[0018] In addition, the alkali-free hair dye composition using a basic amino acid according to various embodiments of the technical concept of the present invention prevents skin damage, itchiness, rashes, and decreased eyesight, which are caused by frequent dyeing to hide gray hair, particularly among the elderly, and improves the dyeability and fastness of the dyed hair, as well as keeping the hair healthy without irritating the scalp.

[0019] It should be appreciated that various embodiments of the inventive concept can provide various advantages not specifically mentioned. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic diagram showing an apparatus for separating free L-lysine from L-lysine hydrochloride by electrolysis in an alkali-agent-free hair dye composition using a basic amino acid according to one embodiment of the technical concept of the present invention. [Diagram 2] 1 is a photograph showing the degree of dyeing of bleached white hair used in an experiment, hair dyed with a hair dye of a comparative example, and hair dyed with a hair dye of an example. [Diagram 3]1 is a photograph showing the color state of hair dyed with a hair dye according to a comparative example and hair dyed with a hair dye according to an embodiment after shampooing 30 times. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The advantages and features of the present invention, as well as the methods for achieving them, will become apparent from the following detailed examples. However, the present invention is not limited to the following examples, and may be embodied in other forms. Rather, the following examples are provided so that the disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the concept of the present invention.

[0022] The terms used in the present invention are merely used to describe specific embodiments, and are not intended to limit the present invention. Unless otherwise specified, the singular expression includes the plural expression.

[0023] Unless otherwise specified, all terms used in the present invention, including technical or scientific terms, are used in the same meaning as commonly understood by those having ordinary skill in the art to which the present invention belongs. Terms defined in commonly used dictionaries should be interpreted in accordance with the contextual meaning in the relevant art, and unless otherwise specified, should not be interpreted in an ideal or overly formal sense.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing a hair dye composition according to an embodiment of the present invention; FIG. 2 is a schematic diagram showing a hair dye composition according to an embodiment of the present invention;

[0025] FIG. 1 is a schematic diagram of an apparatus for separating free L-lysine from L-lysine hydrochloride by electrolysis in an alkali-agent-free hair dye composition using a basic amino acid according to one embodiment of the technical concept of the present invention.

[0026] In general, an oxidative hair dye may be composed of a first agent containing an oxidative dye and an alkaline agent, and a second agent that is mixed with the first agent and contains an oxidizing agent. The oxidative dye has a hair-dyeing effect, the alkaline agent has a hair swelling effect to allow the oxidative dye to penetrate into the hair, and the oxidizing agent has a dyeing effect of oxidizing the first agent to fix the oxidative dye to the hair.

[0027] Specifically, the alkaline agent contained in the first agent swells and softens the hair, promoting the penetration of the dye into the inside of the hair and promoting the action of the oxidizing agent. Examples of the alkaline agent include ammonia water or monoethanolamine.

[0028] The ammonia water has high dye durability and is volatile, so it causes little damage to hair, but it has a strong odor and is irritating, while the monoethanolamine has no odor and does not irritate the scalp, but it is a non-volatile substance, so it remains in large amounts on hair, causing severe damage, and it penetrates into hair slowly, making it difficult to dye.

[0029] That is, the ammonia water is used as an alkaline agent in perms and hair dyes, has a characteristic irritating odor, and is toxic to the human body because of its alkaline nature, denaturing proteins and causing saponification reactions, etc. In particular, at high concentrations, it may cause fatal damage to the respiratory system.

[0030] Moreover, monoethanolamine is used as an alkaline agent in perms and hair dyes, and is a colorless, transparent, viscous liquid with an ammonia smell. Inhalation of monoethanolamine gas can cause liver damage, and exposure to concentrations of 1.0 mg / m or more can lead to chronic bronchitis, liver damage, asthenic syndrome, and dystonia.

[0031] In addition, the oxidizing agent contained in the second agent functions to bleach melanin, which is a natural pigment in hair, so that the hair can be dyed. For example, the oxidizing agent is usually hydrogen peroxide.

[0032] The alkaline agent-free hair dye composition using a basic amino acid according to one embodiment of the technical concept of the present invention does not use the alkaline agents contained in conventional hair dye compositions, such as ammonium hydroxide and monoethanolamine, but uses the basic amino acids L-arginine and free L-lysine. This prevents skin damage, itchiness, rashes, and decreased eyesight, which are particularly associated with frequent dyeing to hide gray hair among the elderly, and improves the dyeability and fastness of the dye, while keeping the hair healthy without irritating the scalp.

[0033] The L-arginine is contained in a free state in plant seeds and garlic, and is also used as an amino acid supplement, and is widely used in medicines, foods, etc. The L-arginine is used in medicines such as liver function promoters, brain function promoters, male infertility treatment drugs, and comprehensive amino acid preparations, and in foods such as fish meal additives, health drink additives, and salt replacement for hypertensive patients, and is a substance that has been in the spotlight recently.

[0034] In particular, the L-arginine is one of the amino acids that constitute proteins and is one of the components of hair. When the L-arginine is used in the hair dye composition according to the present invention, it has the advantage of providing not only a pH adjusting effect but also a hair protecting effect.

[0035] L-lysine is an essential amino acid in the human body, and is a nutrient that tends to be insufficient, especially in Asian people who eat plant-based grains as their staple food. This nutrient acts as a protein precursor for the formation of the skeleton in the body, and is known to have the following physiological effects: carnitine biosynthesis, which promotes fatty acid metabolism; calcium absorption, which is an inorganic growth element; and, when taken in combination with glutamic acid and arginine, promotes intestinal development and enhances immunity.

[0036] That is, the L-lysine is an essential amino acid, and is widely used as various health supplements such as reducing blood triglycerides and preventing osteoporosis, and is used in large quantities in animal feed to improve the reproductive function. Currently, commercially available L-lysine is used in most cases in the form of hydrochloride, and has a pH of 4.5, which may not be suitable as an alkaline agent, but in a hair dye composition according to one embodiment of the technical idea of ​​the present invention, free L-lysine obtained by removing hydrochloric acid by electrolysis can be used as the L-lysine.

[0037] 1, in one embodiment of the technical idea of ​​the present invention, the free L-lysine can be separated from L-lysine hydrochloride by electrolysis, and the L-lysine hydrochloride is a white powder that is easily soluble in water but difficult to dissolve in organic solvents, and is used to supplement lysine and enhance nutritional value when added to food. Lysine is called an essential amino acid or indispensable amino acid because it is not synthesized in the body at all.

[0038] Specifically, the L-lysine hydrochloride has the chemical formula CH 14O2N2 is a white powder or crystalline powder, odorless or with a slightly characteristic odor. It is easily soluble in water, and can be dissolved at 0.001 g / mL in propylene glycol, 0.001 g / mL in 95% methanol, and 0.1 g / mL in D-sorbitol. Lysine is an essential amino acid and has been confirmed to be an essential factor for humans, dogs, and rats, and the D-type has no physiological effect. It is an amino acid that tends to be insufficient nutritionally when grain intake is high, and causes protein metabolism disorders and functional disorders when it is sufficient. The oral LD50 (Erd50) for male rats is 10.75 g / kg, and the oral LD50 for female rats is 10.55 g / kg. The estimated daily requirement for an adult is 12 mg / kg.

[0039] In the present invention, the L-lysine hydrochloride has a molecular weight of 182.65 and a pH of 4.0 to 5.0, and its chemical formula can be represented by Chemical Formula 1 below.

[0040] [ka]

[0041] In addition, in the present invention, free L-lysine produced by electrolyzing the L-lysine hydrochloride has a molecular weight of 146.19 and a pH of 9.0 to 10.0, and its chemical formula can be represented by Chemical Formula 2 below.

[0042] [ka]

[0043] Furthermore, in an apparatus for separating free L-lysine from L-lysine hydrochloride by electrolysis according to an embodiment of the technical concept of the present invention, a negative electrode (-) plate and a positive electrode (+) plate may be disposed on both sides of an anion exchange membrane.

[0044] Furthermore, the negative electrode (-) plate is immersed in a negative electrode (-) liquid and the positive electrode (+) plate is immersed in a positive electrode (+) liquid, and L-lysine hydrochloride can be used as the negative electrode (-) liquid and caustic soda solution can be used as the positive electrode (+) liquid.

[0045] Furthermore, the apparatus for separating free L-lysine from L-lysine hydrochloride by electrolysis according to one embodiment of the technical concept of the present invention can separate free L-lysine from L-lysine hydrochloride by electrolysis under the following conditions.

[0046] <Electrolysis conditions> Negative (-) solution: 800g of 40% L-lysine hydrochloride solution Positive (+) solution: 700g of 20% caustic soda solution Positive electrode (+): DSA (Dimentionally Stable Anode) Negative electrode (-) plate: 1) copper, 2) SUS 316, 3) compared using DSA Electrolyte membrane: Anion exchange membrane (vinyl base) Current density: 3A / dm 2 Current flow: 47A

[0047] The DSA (Dimentionally Stable Anode) is an insoluble positive electrode that can withstand chlorine gas in salt electrolysis. Platinum, magnetite, graphite, etc. have been used, but all of these have a high consumption rate (2-3 kg / t-NaOH for graphite) and poor dimensional accuracy, which causes the voltage in the water tank to increase. However, De Nora of Italy, in collaboration with Henribear of the Netherlands and Diamond Shamrock of the United States, developed a positive electrode that combines ruthenium oxide and titanium oxide on titanium, which significantly extended the lifespan. This is DSA, and it is now used as a general name. It is said to be one of the great inventions of the 20th century. Although it is suitable for chlorine generation, it is relatively vulnerable to oxygen in the generator, so various companies are researching how to improve it. Initially, it was exclusively supplied by Permelec of Italy, so it was also called the Permelec electrode. It is used as an insoluble anode for chromium, precious metal, alloy plating, etc.

[0048] In the above <Electrolysis Conditions>, experiments were carried out by changing the type of negative electrode (-) plate.

[0049] <Experimental Example 1> (1) An electrolysis experiment was conducted using copper (Cu) as the negative electrode (-) plate, and the other conditions were the same as those described above under <Electrolysis conditions>.

[0050] (2) Results Current efficiency: 97.2% (residual chlorine analysis) Free L-lysine yield: 96.8% (HPLC analysis) No corrosion of the negative electrode (-) plate was observed visually, but the possibility of corrosion was confirmed by a change in the color of the negative electrode (-) liquid. Voltage change during operation: Start voltage 3.0V, End voltage 6.0V

[0051] <Experimental Example 2> (1) An electrolysis experiment was conducted using SUS 316 as the negative electrode (-) plate, and the other conditions were the same as those described above in the <Electrolysis Conditions>.

[0052] (2) Results Current efficiency: 96.3% (residual chlorine analysis) Free L-lysine yield: 95.7% (HPLC analysis) Partial spot corrosion was observed on the negative (-) plate. Voltage change during operation: Start voltage 3.2V, End voltage 6.5V

[0053] <Experimental Example 3> (1) An electrolysis experiment was conducted using DSA (a titanium substrate coated with RuO2) as the negative electrode (-) plate, and the other conditions were the same as those described above under <Electrolysis conditions>.

[0054] (2) Results Current efficiency: 97.0% (residual chlorine analysis) Free L-lysine yield: 96.4% (HPLC analysis) No change in the negative (-) plate Voltage change during operation: Start voltage 3.1V, End voltage 6.3V

[0055] <Summary> As is clear from the above Experimental Examples 1, 2, and 3, it was confirmed that free L-lysine can be commercially produced by electrolyzing L-lysine hydrochloride and removing hydrochloric acid.

[0056] We have tried to reduce the residual hydrochloric acid to 0.05% or less, but since an increase in voltage due to the decrease in electrolytes was observed, 0.1% is appropriate for commercial production.

[0057] From the viewpoint of current efficiency, the copper negative electrode (-) plate was the most effective, but the yield of free L-lysine was lower than that of the DSA negative electrode (-). This was believed to be due to the reaction between the corroded copper ions and lysine to produce a metal complex salt of lysine and copper ions.

[0058] Therefore, referring to Experimental Examples 1, 2, and 3, it was confirmed that electrolysis using DSA (Dimentionally Stable Anode) for both the positive (+) and negative (-) plates is most suitable for commercial production.

[0059] The present invention will be described in more detail below with reference to the accompanying drawings, showing examples of an alkali-free hair dye composition using a basic amino acid according to one embodiment of the technical concept of the present invention. EXAMPLES

[0060] A hair dye was prepared by mixing 64.15 parts by weight of purified water, 20.0 parts by weight of emulsifier, 0.2 parts by weight of polyquaternium-10, 0.1 parts by weight of vitamin-C, 0.2 parts by weight of EDTA 2Na, 0.8 parts by weight of animal hydrolysate, 1.0 parts by weight of glycerin, 2.5 parts by weight of L-arginine, 4.5 parts by weight of free L-lysine (35%), 3.20 parts by weight of paraphenylenediamine, 2.1 parts by weight of paraaminophenol, 0.25 parts by weight of meta-aminophenol, 1.30 parts by weight of resorcinol, and 0.2 parts by weight of fragrance.

[0061] The final pH of the hair dye was then 10.3.

[0062] <Comparative Example> A hair dye was prepared by mixing 64.15 parts by weight of purified water, 20.0 parts by weight of emulsifier, 0.2 parts by weight of polyquaternium-10, 0.1 parts by weight of vitamin-C, 0.2 parts by weight of EDTA 2Na, 0.8 parts by weight of animal hydrolyzate, 1.0 parts by weight of glycerin, 4.0 parts by weight of monoethanolamine, 2.5 parts by weight of ammonia water (28%), 3.20 parts by weight of paraphenylenediamine, 2.1 parts by weight of paraaminophenol, 0.25 parts by weight of metaaminophenol, 1.30 parts by weight of resorcinol, and 0.2 parts by weight of fragrance.

[0063] The final pH of the hair dye was then 10.3.

[0064] <Experimental Example 4> A dyeing experiment was carried out using a hair dye containing an organic alkaline agent (monoethanolamine, ammonia water (28%)) according to the comparative example and a hair dye containing a basic amino acid (L-arginine, free L-lysine (35%)) according to the example.

[0065] The dyeing experiment was carried out by using a bundle of bleached white hair to compare the results before and after dyeing, and by carrying out comparative observations of retention and skin irritation experiments, and the results are shown below.

[0066] In the dyeing experiments, a commercially available 6% hydrogen peroxide solution was commonly used as an oxidizing agent.

[0067] 1.Hair color comparison experiment A hair dye containing an organic alkaline agent (monoethanolamine, ammonia water (28%)) according to the comparative example and a hair dye containing a basic amino acid (L-arginine, free L-lysine (35%)) according to the embodiment were applied to bleached white hair and then left at room temperature (20°C) for 30 minutes.

[0068] FIG. 2 is a photograph showing the dyeing condition of bleached white hair used in the experiment, hair dyed with a hair dye of a comparative example, and hair dyed with a hair dye of an example.

[0069] Referring to FIG. 2, it can be seen that the hair dyed with the hair dye of the embodiment has excellent dyeability.

[0070] 2. Hair color retention experiment Hair dyed with a hair dye containing an organic alkaline agent (monoethanolamine, ammonia water (28%)) according to a comparative example and a hair dye containing a basic amino acid (L-arginine, free L-lysine (35%)) according to an embodiment were shampooed, and then the state of color fading was comparatively observed.

[0071] FIG. 3 is a photograph showing the state of hair color of hair dyed with the hair dye of the Comparative Example and hair dyed with the hair dye of the Example after shampooing 30 times.

[0072] Referring to FIG. 3, it can be seen that the hair dyed with the hair dye of the embodiment has excellent dyeability, since the color does not fade much even after 30 shampoos.

[0073] 3. Skin irritation experiment An experiment was conducted to determine skin irritation when dyeing with a hair dye containing an organic alkaline agent (monoethanolamine, ammonia water (28%)) from a comparative example and a hair dye containing a basic amino acid (L-arginine, free L-lysine (35%)) from an example.

[0074] The skin irritation experiment was carried out on 10 people who were highly sensitive to dyeing. The hair dye of the comparative example (alkaline hair dye (5 people)) and the hair dye of the embodiment (amino acid hair dye (5 people)) were applied to 5 people each, and the hair dye was left for 30 minutes, and the odor, irritation, and scalp trouble were observed. The results are shown in Table 1 below.

[0075] [Table 1]

[0076] <Summary> 2 and 3 and Table 1, there is no significant difference in color development and color fading between the hair dye containing an organic alkaline agent (monoethanolamine, ammonia water (28%)) according to the Comparative Example and the hair dye containing a basic amino acid (L-arginine, free L-lysine (35%)) according to the Example. It can be seen that the hair dye according to the Example has better dyeing properties.

[0077] Therefore, it can be confirmed that the hair dye according to the embodiment can dye hair while keeping it healthy without causing irritation to the scalp, such as skin damage and itching, which are caused by frequent dyeing to hide gray hair among the elderly.

[0078] Although a preferred embodiment of the present invention has been described above with reference to the accompanying drawings, those skilled in the art will understand that the present invention can be embodied in other specific forms without changing the technical concept or essential features of the present invention. Therefore, it should be understood that the above embodiment is merely illustrative and not limiting.

Claims

1. The alkali-free hair dye composition using a basic amino acid is characterized by comprising purified water, an emulsifier, polyquaternium-10, vitamin C, EDTA disodium, an animal hydrolysate, glycerin, L-arginine, free L-lysine, paraphenylenediamine, paraaminophenol, meta-aminophenol, resorcinol, and a fragrance.

2. The alkaline agent-free hair dye composition using the basic amino acid according to claim 1, characterized in that it contains 64.15 parts by weight of purified water, 20.0 parts by weight of emulsifier, 0.2 parts by weight of polyquaternium-10, 0.1 parts by weight of vitamin-C, 0.2 parts by weight of EDTA 2Na, 0.8 parts by weight of animal hydrolysate, 1.0 parts by weight of glycerin, 2.5 parts by weight of L-arginine, 4.5 parts by weight of free L-lysine, 3.20 parts by weight of paraphenylenediamine, 2.1 parts by weight of paraaminophenol, 0.25 parts by weight of meta-aminophenol, 1.30 parts by weight of resorcinol, and 0.2 parts by weight of fragrance.

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