KR20080072750A - Dye remover compositon - Google Patents

Abstract

A dye remover composition which removes a dye based on the reductional action of a reducing agent. When applied to the scalp, the composition is less irritative to the scalp and can prevent air oxidation after a dye removal treatment. The dye remover composition is used for removing the dye from fibers dyed with an oxidation dye containing an aminated dye intermediate. It contains a reducing agent and removes the dye from the fibers based on the reductional action of the reducing agent. This dye remover composition further contains a reducing sugar. Examples of the reducing sugar include xylose and dihydroxyacetone.

Description

Desalting Agent Composition {DYE REMOVER COMPOSITON}

The present invention relates to a desalting agent composition capable of suppressing discoloration of fibers after desalting treatment.

Hair dye compositions comprising, for example, a dye carrier material comprising an oxidizing dye and ammonia and an oxidizing agent such as hydrogen peroxide are known as general hair dye compositions for dyeing fibers such as hair. There is a known desalting agent composition used for desalting fibers dyed with the hair dye composition, which desalting agent composition contains a reducing agent. The desalting agent composition performs desalting of fibers by the reducing action of the reducing agent. The fiber desalted by the desalting agent composition has a problem that, after several hours or days after desalting, recoloring of the fiber, for example, blackening of the fiber, occurs due to air oxidation. Patent document 1 discloses the desalting agent composition containing (alpha) -oxocarboxylic acid. The desalting agent composition prevents discoloration of fibers due to air oxidation after the desalting treatment by the action of α-oxocarboxylic acid.

Patent Document 1: Japanese Patent Laid-Open No. 11-310521

Disclosure of the Invention

However, α-oxocarboxylic acid in the desalting agent composition disclosed in Patent Document 1 is included to prevent discoloration by air oxidation and is a strong acid. Therefore, the pH of the desalting agent composition is kept low. As a result, when the desalting agent composition is applied to the hair, there has been a problem that the scalp is irritated when using the desalting agent composition. If the content of α-oxocarboxylic acid is set only low in order to reduce the stimulation, discoloration of the fiber due to air oxidation cannot be sufficiently suppressed.

As a result of intensive studies, the present inventors have found that the above problem can be solved by including a reducing sugar in the desalting agent composition when the dye intermediate having an amino group is contained in the oxidizing dye. It is an object of the present invention to provide a desalting agent composition which performs desalting by the reducing action of a reducing agent, which can reduce irritation when applied to the scalp and prevent air oxidation after desalting treatment.

According to one aspect of the present invention, there is provided a desalting agent composition which is used for desalting fibers dyed with an oxidative dye containing a dye intermediate having an amino group, and which contains a reducing agent for desalting the fibers by the reducing action of the reducing agent. The desalting agent composition further contains a reducing sugar.

The reducing sugar is preferably a monosaccharide. The monosaccharide is preferably at least one selected from the group consisting of xylose and dihydroxyacetone. The reducing agent is preferably at least one selected from the group consisting of ascorbic acid, thioglycolic acid, cysteine, mercapto compounds, sulfite, hydrogen sulfite, and thiosulfate.

The demineralizing agent composition preferably further contains a hair penetrant. The hair penetrant is preferably an aromatic alcohol. Preferably, the reducing sugar is xylose and the mass ratio of xylose to hair penetrant is in the range 0.1-5. Preferably, the content of xylose in the desalting agent composition is in the range of 0.5-30 mass%. Moreover, preferably, the reducing sugar is dihydroxyacetone, and the mass ratio of dihydroxyacetone to hair penetrant is in the range of 0.05-5. Preferably, the content of hydroxyacetone in the desalting agent composition is in the range of 0.05-30 mass%.

example Implement the invention  Best mode for

EMBODIMENT OF THE INVENTION Hereinafter, it demonstrates in detail with reference to embodiment which actualized this invention about the desalting agent composition. The desalting agent composition of the present embodiment is used for desalting hair as fibers dyed by the hair dye composition. The hair dye composition is composed of a first agent and a second agent.

<1st agent of hair dye composition>

The first agent of the hair dye composition contains, for example, an oxidative dye and an alkali agent. Oxidizing dyes are colorable compounds resulting from oxidative polymerization by the oxidizing agent contained in the second agent of the hair dye composition and are classified as dye intermediates and couplers. Oxidative dyes contain at least dye intermediates, which dye intermediates have amino groups.

Examples of dye intermediates having amino groups include: p-phenylenediamine, toluene-2,5-diamine, N-phenyl-p-phenylenediamine, 4,4'-diaminodiphenylamine, p- Aminophenol, o-aminophenol, p-methylaminophenol, N, N-bis (2-hydroxyethyl) -p-phenylenediamine, 2-hydroxyethyl-p-phenylenediamine, o-chloro-p -Phenylenediamine, 4-amino-m-cresol, 2-amino-4-hydroxyethyl aminoanisole, 2,4-diaminophenol, and salts thereof. These may be contained alone, or two or more may be contained in combination.

Couplers develop in combination with dye intermediates. Examples of couplers include: 5-amino-o-cresol, m-aminophenol, 5- (2-hydroxyethylamino) -2-methylphenol, m-phenylenediamine, 2,4-diamino Phenoxyethanol, toluene-3,4-diamine, 2,6-diaminopyridine, diphenylamine, N, N-diethyl-m-aminophenol, phenylmethyl pyrazolone, and salts thereof. These may be contained alone or two or more kinds may be contained in combination. The oxidizing dye is preferably composed of at least one selected from specific examples of dye intermediates and at least one selected from specific examples of couplers. In this case, the color tone of the hair can be variously changed.

The content of the oxidizing dye in the hair dye composition is preferably in the range of 0.02 to 25% by mass, more preferably 0.2 to 15% by mass. If the content of the oxidizing dye is less than 0.02% by mass, sufficient dyeability may be difficult to obtain. Even if the content of the oxidative dye exceeds 25% by mass, the dyeability does not improve further. As a result, the economical efficiency of hair dye may fall.

The content of the dye intermediate in the hair dye composition is preferably in the range of 0.01 to 15% by mass, more preferably 0.1 to 10% by mass. If the content of the dye intermediate is less than 0.01% by mass, sufficient dyeability may be difficult to obtain. Even if the content of the dye intermediate is more than 15% by mass, the dyeability does not improve further. As a result, the economical efficiency of hair dye may fall.

The content of the coupler in the hair dye composition is preferably in the range of 0.01 to 10% by mass, more preferably 0.1 to 5% by mass. If the content of the coupler is less than 0.01% by mass, it may be difficult to obtain sufficient dyeability. Even if the content of the coupler exceeds 10% by mass, the dyeability does not improve further. As a result, the economics of hair dye can be reduced. The first agent optionally contains one or more selected from the oxidation dyes and direct dyes described in "The Japanese Standards of Quasi-Drug Component" (June 1991, Yakujinippo, Ltd.) as dyes other than the above-mentioned oxidation dyes. can do.

The alkali agent promotes the action of the oxidizing agent contained in the second agent of the hair dye composition, or swells the hair to improve the permeability of the dye to the hair, thereby improving the dyeability. Examples of alkaline agents include ammonia, alkanolamines, organic amines, inorganic alkalis, basic amino acids, and salts thereof. Examples of organic amines include 2-amino-2-methyl-1,3-propanediol, and guanidine. Examples of inorganic alkalis include sodium hydroxide, potassium hydroxide, sodium carbonate, and potassium carbonate. Examples of basic amino acids include arginine and lysine. Examples of salts include ammonium salts. These may be contained alone or two or more kinds may be contained in combination.

The content of the alkali agent is preferably an amount in which the pH of the first agent is in the range 8-12. If the pH of the first agent is less than 8, the action of the hydrogen peroxide contained in the second agent as the oxidant may not be sufficiently promoted when the first agent is mixed with the second agent. If the pH of the first agent is greater than 12, problems such as hair damage may occur when the hair dye composition is applied to the hair.

The first agent may optionally contain each component, oily component or surfactant other than the reducing sugar contained in the second agent of the desalting agent composition. In addition, the first agent preferably contains a polymerization inhibitor in order to produce a low polymerization ratio polymer which is easily desalted by the desalting agent composition when the oxidizing dye is oxidatively polymerized by the oxidizing agent. Examples of such polymerization inhibitors include ascorbic acid and sulfite, which act as reducing agents. Specific examples of ascorbic acid contained in the first agent are the same as specific examples of ascorbic acid contained in the first agent of the desalting agent composition. Formation of the first agent is not particularly limited, and examples thereof may include liquid, gel, foam, and cream. Examples of liquid phases include aqueous solutions, dispersions and emulsions.

<2nd agent of hair dye composition>

 The second agent of the hair dye composition contains an oxidizing agent. The oxidant decolorizes the melanin contained in the hair and develops the color by oxidizing the oxidative dye contained in the first agent of the hair dye composition. Examples of oxidizing agents include potassium bromate, sodium bromate, sodium perborate, and hydrogen peroxide. When content of the oxidizing agent in a 2nd agent is set to 100 mass% of whole quantity of a 2nd agent, Preferably it is 0.1-15.0 mass%.

The second agent includes, as components other than the oxidant, a component generally contained in the second agent of the oxidative hair dye composition. The second agent may optionally contain components other than the oxidative dye and the alkali agent contained in the first agent of the hair dye composition. When the second agent contains hydrogen peroxide as the oxidizing agent, the second agent preferably contains a stabilizer to suppress decomposition of the hydrogen peroxide. Examples of stabilizers include urea, phenacetin, sodium stannate, ethylene glycol phenyl ether, 8-oxyquinoline, and phosphoric acid. The formation of the second agent is not particularly limited, and examples thereof include liquid, gel, foam, and cream. Examples of liquid phases include aqueous solutions, dispersions, and emulsions.

<Dye Composition>

The hair dye composition is prepared by mixing the first agent and the second agent in a predetermined ratio. The formation of the hair dye composition is not particularly limited, and examples thereof may include a liquid phase, a cream, a gel phase, and a foam phase.

Hereinafter, the desalting agent composition will be described. The desalting agent composition consists of a first agent and a second agent.

<1st agent of a desalination agent composition>

The first agent of the desalting agent composition contains a reducing agent and may further comprise one or more selected from the group consisting of, for example, fumaric acid and a dispersant. The first agent is provided in powder form. The reducing agent reduces the polymer produced by the oxidative polymerization of the oxidative dyes that dye the hair. More specifically, the reducing agent can easily depolymerize or resonate a polymer having a low polymerization ratio by its reducing action. Examples of reducing agents include ascorbic acid, thioglycolic acid, cysteine, mercapto compounds, sulfite, hydrogen sulfite, and thiosulfate.

Examples of ascorbic acid include ascorbic acid, erythorbic acid, and salts thereof and derivatives thereof. Examples of ascorbate and erythorbate include sodium ascorbate, potassium ascorbate, calcium ascorbate, ammonium ascorbate, monoethanolamine ascorbate, diethanolamine ascorbate, and sodium erythorbate It includes.

Examples of ascorbic acid derivatives and erythorbic acid derivatives include: disodium ascorbyl sulfate, disodium erytorville sulfate, magnesium ascorbyl phosphate, ascorbyl palmitate, ascorbyl stearate, Ascorbyl dipalmitate, ascorbyl tetra 2-hexyldecanate, ascorbyl myristate, ascorbyl laurate, ascorbyl acetate, ascorbyl propionate, ascorbyl tartrate, ascorbyl Citrate, ascorbyl succinate, ascorbyl benzoate, potassium (ascorbyl / tocopheryl) phosphate, ethyl ascorbic acid, allantoin ascorbate, chitosan ascorbate, methylsilanol ascorbate, ascorby Ville Tetradecylhexyl, Aminopropyl Ascorbyl Phosphate, Ascorbic Acid Polypeptide, Ascorbyl Gluco De, and ascorbyl methyl silanol pekti carbonate.

Examples of thioglycolic acid include thioglycolic acid, thioglycolate, and thioglycolic acid esters. Examples of thioglycolates include ammonium thioglycolate and sodium thioglycolate. Examples of thioglycolic acid esters include glycerin thioglycolate. Examples of cysteine include cysteine, cysteine hydrochloride, and N-acetyl-L-cysteine.

Examples of mercapto compounds include thioglycerol, thiol acetic acid, thiomalic acid, and cysteamine. Examples of sulfites include sulfurous acid, ammonium sulfite, and sodium sulfite. Examples of hydrogen sulfite salts include ammonium bisulfite and sodium bisulfite. Thiosulfate includes thiosulfate and sodium thiosulfate. Specific examples of these reducing agents may be contained alone or two or more kinds may be contained in combination.

Among the specific examples of the reducing agent, ascorbic acid is preferred. Ascorbic acid is excellent for depolymerizing or resonating polymers having a low polymerization ratio. In addition, by containing ascorbic acid as the reducing agent, the bad body coming out of the first agent and the desalting agent composition can be reduced, and the degree of hair damage after the desalting treatment can also be reduced.

Fumaric acid inhibits reoxidation of a compound produced by depolymerization or non-resonance of a polymer having a low polymerization ratio, and inhibits hair recoloring. A dispersing agent suppresses formation of the aggregated phase formed by aggregation of ascorbic acid, for example, and improves the dispersibility of the first agent in the second agent when mixing the first agent and the second agent of the desalting agent composition. Examples of dispersants include metal salts of stearic acid, talc, crystalline cellulose, low-substituted hydroxypropylcellulose, and dextrins. Examples of metal salts of stearic acid include calcium stearate and magnesium stearate.

<2nd agent of desalination agent composition>

The second agent of the desalting agent composition contains reducing sugars and is provided in liquid, gel, or cream form. Reducing sugar prevents discoloration of hair due to air oxidation after desalting treatment. Reducing sugars have aldehyde groups or ketone groups that are free or bound by hemiacetal bonds and have Maillard reactivity with, for example, amino groups of amino acids or proteins. Examples of reducing sugars include free monosaccharides, reducing disaccharides, and reducing oligosaccharides.

Examples of free monosaccharides include trios, tetros, pentose, hexose, and heptose. Examples of trios include glyceraldehyde and dihydroxyacetone. Examples of tetros include erythrose. Examples of pentose include ribose, xylose, and aravinos. Examples of hexoses include glocos, galactose, mannose, and fructose. Examples of heptoses include sedohectulos.

Examples of reducing disaccharides include homobis and heteroobioses. Examples of hemobis include maltose, cellobiose, isomaltose, and genthiobiose. Examples of heterobioses include melibiose, lactose, maltulose and lactulose.

Examples of reducible oligosaccharides include maltotriose, which is a degradation product of starch or glycogen by α-amylase. Specific examples of the reducing sugar may be contained alone, or two or more kinds may be contained in combination. Among these specific examples, free monosaccharides are preferred because they have a high discoloration prevention effect and a high reducing power per unit mass. More preferred are xylose and dihydroxyacetone, because the discoloration leaving effect is higher and easier to obtain.

The content of the reducing sugar in the desalting agent composition is determined by measuring the reducing power of the constituent sugar moiety, more specifically, the reducing end group (carbonyl group, or functional group easily changed to carbonyl group) in the reducing sugar molecule. The content of the reducing sugar in the desalting agent composition is further determined by measuring the reducing power of the reducing sugar with respect to the unit mass. If the reducing sugar is pentose, such as xylose, the content of the reducing sugar is preferably in the range of 0.5 to 30 mass%, more preferably 1 to 20 mass%, most preferably 2 to 10 mass%. If the content of the reducing sugar is less than 0.5% by mass, it may be difficult to sufficiently suppress discoloration of the hair after the desalting treatment. When content of a reducing sugar is more than 30 mass%, hair feel can fall by stickiness, for example.

If the reducing sugar is triose, such as dihydroxyacetone, the content of the reducing sugar is preferably in the range of 0.05-30 mass%, more preferably 0.1-20 mass%, and most preferably 0.2-10 mass%. If the content of the reducing sugar is less than 0.05% by mass, it may be difficult to sufficiently suppress the discoloration of the hair after the desalting treatment. When content of a reducing sugar is more than 30 mass%, hair feel can fall by stickiness, for example.

The second agent preferably contains a hair penetrant to enhance the permeability of the active ingredient of the demineralizing agent composition, such as reducing sugars, to the hair. Examples of hair penetrants include: lower alcohols, glycols, glycerin, aromatic alcohols, ethyl carbitol, phenethyl alcohol, N-methylpyrrolidone, N-ethylpyrrolidone, ethyl carbonate, and propylene carbonate. Examples of lower alcohols include ethanol and isopropanol. Examples of glycols are propylene glycol, 1,3-butylene glycol, isopropylene glycol, hexylene glycol, polyethylene glycol, and polypropylene glycol. An example of glycerin is diglycerin, independent of glycerin itself. Examples of aromatic alcohols include benzyl alcohol and benzyloxy ethanol. These may be contained alone or two or more kinds may be contained in combination. Among these, aromatic alcohols are preferred because of high permeability of the active ingredient of the desalting agent composition. Benzyl alcohol and benzyloxy ethanol are more preferable because they are readily available.

The content of the hair penetrant in the desalting agent composition is preferably in the range of 1 to 30% by mass, more preferably 2 to 20% by mass, most preferably 3 to 15% by mass. If the content of the hair penetrant is less than 1% by mass, it may be difficult to obtain a hair penetration promoting effect of the active ingredient of the composition in the desalting agent. When the content of the hair penetrant is more than 30% by mass, the hair feel may decrease. In addition, the stability of the desalting agent composition may deteriorate.

In order to obtain discoloration prevention effect by synergistic effect of reducing sugar and hair penetrant, when reducing sugar is xylose, the ratio of xylose to hair penetrant in the desalting agent composition is preferably in the range of 1: 0.1-1: 5, more preferably 1: 0.1-1: 3, most preferably 1: 0.2-1: 2 edie. If the ratio of xylose to hair penetrant is 1: 0.1-1: 5, the mass ratio of xylose to hair penetrant is in the range 0.1-5.

Likewise, if the reducing sugar is dihydroxyacetone, the ratio of dihydroxyacetone to hair penetrant in the desalting agent composition is preferably in the range 1: 0.05-1: 5, more preferably 1: 0.05-1: 3, most Preferably 1: 0.1-1: 2. If the ratio of dihydroxyacetone to hair penetrant is 1: 0.05-1: 5, the mass ratio of dihydroxyacetone to hair penetrant is in the range of 0.05-5. In specific examples of reducing sugars other than xylose and dihydroxyacetone, the ratio of reducing sugars to hair penetrant is determined by measuring the reducing power of the constituent sugar residues (reducing end groups in the reducing sugar molecule) or the reducing power of the reducing sugar per unit mass.

The second agent may contain, if desired, one or more selected from the group consisting of: water, water soluble high molecular compounds, surfactants, oily ingredients, polyhydric alcohols, preservatives, chelating agents, stabilizers, pH adjusters, Plant extracts, herbal extracts, vitamins, fragrances, and ultraviolet absorbers.

Water acts as a solubilizer for the reducing agent. The water soluble high molecular compound acts as a thickener to impart suitable viscosity to the desalting agent. Examples of water soluble high molecular compounds include gum arabic, karaya gum, tragacanth gum, alginate sodium, xanthan gum, cellulose derivatives, crosslinked polyacrylic acid, and polydimethylmethylene piperidium.

Oily ingredients provide moisture to the hair. Thus, the second agent preferably contains an oily component. Examples of oily components include fats and oils, waxes, higher alcohols, hydrocarbons, higher fatty acids, alkyl glyceryl ethers, esters, and silicones.

Examples of fats and oils include: olive oil, camellia oil, shea butter, almond oil, tea seed oil, camellia sasanqua oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, Sesame oil, Uji, Cacao butter, Corn oil, Peanut oil, Rapeseed oil, Rice bran oil, Rice germ oil, Wheat germ oil, Yulpi oil, Grape seed oil, Avocado oil, Carrot oil, Maca Macadamia nut oil, castor oil, flaxseed oil, coconut oil, mink oil, and egg yolk. Examples of waxes are beeswax, candelilla wax, carnaiba wax, jojoba oil, and lanolin.

Examples of higher alcohols include: lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, cetostearyl alcohol, arachyl alcohol, behenyl alcohol, 2-hexyldecanol , Isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, and lanolin alcohol.

Examples of hydrocarbons include: α-olefin oligomers, light isoparaffins, light flow isoparaffins, synthetic squalene, vegetable squalene, squalene, polybutenes, flow isoparaffins, flow paraffins, ozokerite, ceresin ( ceresin), paraffin, polyethylene powder, microcrystalline wax, and petrolatum.

Examples of higher fatty acids include: lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, Linoleic acid, ricinoleic acid, and lanolin fatty acids. Examples of alkyl glyceryl ethers include: batyl alcohol (monostearyl glyceryl ether), chimil alcohol (monocetyl glyceryl ether), cellacyl alcohol (monoleyl glyceryl ether), and isostearyl glycerol Reel ether.

Examples of esters include: 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, butyl stearate, Stearyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyl octanoate, triisodecyl myristate, isostearyl myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate , (call ester reel / lanosterol) fatty acid ester (C ₁₀ - _{10 30),} lauryl lactate, cetyl lactate, pre-scan Yl lactate, octyldodecyl lactate, acetylated lanolin, isocetyl stearate, isocetyl isostearate, 12-cholesteryl hydroxystearate, di-2-ethylene glycol ethyl hexanoate, dipentaerythritol Fatty acid esters, N-alkylglycol monoisostearate, cetyl caprate, glyceryl tricaprylate, neopentin glycol dicaprate, diisostearyl malate, and lanolin derivatives.

Examples of silicones include: dimethyl polysiloxane, methylphenyl polysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, polyether modified silicone, high polymerization silicone with average degree of polymerization of 650-10,000, amino modification Silicone, betaine modified silicone, alkyl modified silicone, alkoxy modified silicone, mercapto modified silicone, carboxy modified silicone, and fluorine modified silicone. Specific examples of the oily component may be contained alone or two or more kinds may be contained in combination.

Examples of polyhydric alcohols include glycols and glycerin. Examples of glycols include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, and 1,3-butylene glycol. Examples of glycerin include glycerin, diglycerine, and polyglycerine.

The surfactant maintains the stability of the first agent of the desalting agent composition as an emulsifier or solubilizer. Examples of surfactants include nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants.

Nonionic surfactants include: polyoxyethylene (hereinafter POE) alkyl ethers, POE alkyl phenyl ethers, POE polyoxypropylene alkyl ethers, POE sorbitan fatty acid esters, POE propylene glycol fatty acid esters, and aliphatic alkanolamides .

Examples of cationic surfactants include: lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, distearyldimethylammonium chloride, cetyltrimethylammonium bromide, stearyltrimethyl Ammonium bromide, behenyltrimethylammonium methylsulfate, stearyltrimethylammonium saccharin, and cetyltrimethylammonium saccharin.

Examples of anionic surfactants include: alkyl sulfates, POE alkyl sulfates, alkyl sulfate ester salts, sodium methyl stearoyl taurate, triethanolamine dodecylbenzenesulfonate, sodium tetradecene sulfonate , POE laurylether phosphate and salts thereof, N-lauroyl glutamate, and N-lauroylmethyl-β-alanine. Examples of alkyl sulphates include sodium lauryl sulphate. Examples of POE alkyl sulphates include sodium POE lauryl ether sulphate. Examples of alkyl sulfate ester salts include triethanolamine lauryl sulfate.

Examples of amphoteric surfactants are sodium 2-undecyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, cocamidopropyl betaine, and lauryl dimethylaminoacetic acid betaine.

Examples of preservatives include parabens. Examples of chelating agents include disodium ethylenediaminetetraacetate (EDTA-2Na). Examples of stabilizers are phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, and tannic acid. Examples of pH adjusters include phosphoric acid, citric acid, sulfuric acid, acetic acid, lactic, tartaric acid, and malic acid.

<Desalting agent composition>

The desalting agent composition is prepared by mixing the first agent and the second agent in a predetermined ratio. In this case, the reducing agent in the first agent is dissolved in the second agent. The desalting agent composition is applied to hair dyed by the color development of the polymer produced by the oxidative polymerization of the oxidative dye using an applicator such as a brush or a comb. In this case, the hair-dyed polymer is depolymerized or unresonated by the reducing action of the reducing agent. After the desalting treatment, the oxidation dyes converted to monomers or low molecular weight substances from the hair dye composition remain in the hair. Reducing sugars in the desalting agent inhibit oxidative polymerization of oxidative dyes due to air oxidation. As a result, discoloration of hair is suppressed. More specifically, the Maillard reaction takes place, wherein the amino group of the dye intermediate remaining in the hair and the aldehyde group or the keto group of the reducing sugar are combined. As a result, repolymerization of the dye intermediate due to air oxidation is suppressed, and discoloration of the hair is suppressed.

Hereinafter, the advantage exhibited by this embodiment is described.

(1) In this embodiment, the desalting agent composition applied to the hair dyed by the oxidative dye containing the dye intermediate having an amino group contains a reducing sugar. Therefore, air oxidation after a desalination process can be prevented. More specifically, after the desalting treatment, the amino group converted to the monomer or the low molecular weight substance remaining in the hair and the aldehyde group or the keto group of the reducing sugar are combined to suppress repolymerization (discoloration) of the dye intermediate due to oxidation in the air. .

(2) The desalting agent composition of the present embodiment contains a neutral reducing sugar instead of the strong acid α-oxocarboxylic acid. Thus, when applying the desalting agent composition to the scalp, the irritation of the scalp can be reduced.

(3) In this embodiment, when the monosaccharide is used as the reducing sugar, the advantage of the present invention is exploited by using a small amount of reducing sugar. This is because the reducing power to the unit mass of the constituent sugar residues or monosaccharides is higher than the reducing power to the unit mass of the constituent residue residues or reducing disaccharides or reducing oligosaccharides. For example, maltose, a reducing disaccharide, is used in combination with one molecule of reducing end groups in two molecules of glycos, ie, two molecules of glucose, constituting maltose. Have a short run. Thus, compared to glucose, a monosaccharide, the reducing power of the constituent sugar residues or the reducing power of the maltose to the unit mass is about 1/2. About maltose, about 2 times (mass%) of glucose is needed in order to acquire the reducing power equivalent to glucose which is a monosaccharide.

(4) In this embodiment, when at least one selected from the group consisting of xylose and dihydroxyacetone is used as the reducing sugar, the advantages of the present invention are exploited by using a small amount of reducing sugar. This is because the reducing power of xylose and dihydroxyacetone to unit mass is higher than that of hexose and heptose per unit mass. Moreover, xylose and hydroxyacetone are inexpensive and readily available compared to other monosaccharides.

(5) In this embodiment, when using at least one selected from the group consisting of ascorbic acid, thioglycolic acid, cysteine, mercapto compound, sulfite, hydrogen sulfite, and thiosulfate as reducing agent, desalting operation is easily performed. do. This is because the reducing agent is excellent for depolymerization or non-resonance of polymers with low polymerization.

(6) When the demineralizing agent composition of the present embodiment contains a hair penetrating agent, the permeability of the reducing sugar to the hair is improved, and the discoloration prevention effect is further improved.

(7) When xylose is used as the reducing sugar in the present embodiment, the content of xylose in the desalting agent composition is set within a range of 0.5 to 30% by mass to suppress the deterioration of the hair feel due to stickiness of the hair, and desalting The color change of the hair after a treatment is fully suppressed.

(8) When dihydroxyacetone is used as the reducing sugar in the present embodiment, the content of dihydroxyacetone in the desalting agent composition is set in the range of 0.05-30 mass%, thereby reducing the hair feel due to stickiness of the hair. It suppresses and fully suppresses the discoloration of the hair after a desalting process.

The above embodiment can be changed as follows.

In this embodiment, the desalting agent composition is applied to the hair. However, the desalting agent composition can be applied to fibers other than hair which can be dyed with an oxidative dye, for example feathers of human hair, wool or birds other than hair. In such a case, air oxidation after a desalination process can be prevented.

The desalting agent composition of the above embodiment is composed of a first agent and a second agent, and the first agent and the second agent are mixed immediately before use of the desalting agent composition. However, the desalting agent composition may consist of a single formulation composed from a solution containing all components contained in the desalting agent composition. The desalting agent composition can be applied to hair after a person using the desalting agent composition prepares the desalting agent composition by dissolving a solid component such as a reducing agent and a reducing sugar in water. Examples of solid reducing agents include powdered ascorbic acid. The desalting agent composition may be composed of three or more formulations by arbitrarily separating the components constituting the first and second agents of the desalting agent composition. For example, the reducing sugar may be excluded from the first agent and the second agent. To prepare the desalting agent composition, the first agent and the second agent may be mixed and then reducing sugars may be added to the mixture.

In the above embodiment, the reducing sugar may be contained in the first agent of the desalting agent composition instead of the second agent of the desalting agent composition.

The hair dye composition of the above embodiment is composed of a first agent and a second agent, and the first agent and the second agent are mixed immediately before use of the hair dye composition. However, the hair dye composition may consist of three or more formulations, optionally separating the components constituting the first and second agents of the hair dye composition. For example, the hair dye composition may be composed of an oxidizing dye containing a dye intermediate having an amino group as a first agent, a second agent containing an alkali agent, and a third agent containing an oxidant. In this configuration, since the oxidative dye is separated from the alkali agent, the storage stability of the oxidized dye is improved. In addition, all components constituting the hair dye composition may be separated, and the ingredients may be mixed immediately before use of the hair dye composition.

In this embodiment, the first agent of the desalting agent composition is provided in powder form to improve the stability of the reducing agent. However, the form of the first agent is not particularly limited, and the first agent may be provided in liquid, gel or cream form by containing a solvent such as water in the first agent.

Example

Next, the said embodiment is demonstrated in detail with reference to an Example and a comparative example.

The 1st agent and the 2nd agent of the hair dye composition containing each component shown in Table 1 were prepared. The numerical value in the column which shows each component of Table 1 is content of the component of the said column, and a unit is the mass%. Then, the hair dye composition was prepared by mixing the first agent and the second agent in a mass ratio of 1: 1. The obtained hair dye composition was applied to a medium brown human hair bundle (hereinafter simply referred to as a hair bundle) using a brush, and left at room temperature (25 ° C.) for 30 minutes. Then, after the hair dye composition attached to the hair bundle was rinsed with water, the hair bundle was wound twice with shampoo, and the hair conditioner was applied to the bundle once. Then, the hair bundle was left to dry for 1 day after warming.

 <First article>  28% ammonia water 5  Ascorbic acid 0.5  Sodium sulfite 0.2  Sodium Lauryl Sulfate 2  Stearyl alcohol 10  POE (30) stearyl ether 10  Disodium EDTA 0.5  Paraphenylenediamine 0.5  2,4-diaminophenoxyethanol hydrochloride One  Purified water Remaining amount  system 100  <The second agent>  35% hydrogen peroxide 16  Sodium Tartrate 0.1  EDTA 0.5  Cetanol 5  Sodium Lauryl Sulfate One  Purified water Remaining amount  system 100

Moreover, the 1st agent and the 2nd agent of the desalting agent composition containing each component shown in Table 2 were prepared. The numerical value in the column which shows each component of Table 2 is content of the component of the said column, and the unit is mass%. Then, the hair dye composition was prepared by mixing the first agent and the second agent in a mass ratio of 1:10. The obtained hair dye composition was applied to the hair bundle using a brush and left at room temperature (25 ° C.) for 30 minutes.

Then, after the hair dye composition attached to the hair bundle was rinsed with water, the hair bundle was wound twice with shampoo, and the hair conditioner was applied to the bundle once. Then, the hair bundle was dried with warmth. Subsequently, for hair bundles treated with desalination, L ^* a ^* b ^* values (L ₁ , a ₁ , and b ₁ using a spectrometer (Minolta Co., Ltd., Model number: CM-508d)) were used. ) Was measured. Moreover, pH of the 2nd agent and desalting agent composition of each case shown in Table 2 was measured.

<Air property ratio>

After leaving the hair bundle treated by the desalting treatment for 24 hours in a 40 ° C. thermostat, the L ^* a ^* b ^* values (L ₂ , a ₂ , and b ₂ ) were measured by a spectrometer.

From the L ^* a ^* b ^* values of untreated hair bundles, desalted hair bundles and incubated hair bundles, the color difference between the untreated hair bundle and the desalted hair bundle (ΔE ₁ ) and the untreated hair bundle and constant temperature The color difference (ΔE ₂ ) between the hair bundles after the treatment was calculated by the following equation (1).

ΔE ₁ = ((L _i -L ₀ ) ² + (a _i -a ₀ ) ² + (b _i -b ₀ ) ² } ^1/2 (1)

In formula (1), L _i denotes an L ^* value of a hair bundle after the hair bundle, or incubated after the desalting treatment, a _i denotes an a ^* value of the hair bundle after the hair bundle, or incubated after the desalting treatment, b _i Denotes the b ^* value of the hair bundle after desalting treatment or the bundle of hair after incubation, and L ₀ , a ₀ , and b ₀ represent the L ^* value, a ^* value, and b ^* value of the untreated hair bundle, respectively.

Next, the air reoxidation rate [%] was calculated from the following formula (2) from ΔE ₁ and ΔE ₂ .

Air reoxidation rate [%] = (1-ΔE ₁ / △ E ₂ ) × 100 (2)

The lower the air reoxidation rate, the less discoloration of the hair in incubation. The calculation results of the air reoxidation rate in each example are shown in Table 2.

<Sensory Stimulation>

The desalting agent composition of each Example and the comparative example was apply | coated to the upper arm of five panels. Ten minutes after application, the sensory stimulus evaluation felt by each panel was performed in the following three steps. More specifically, the stimuli felt by the panel were evaluated at the following three points: 3 (no stimulus felt by the panel), 2 (weak stimulus felt by the panel and a slight tingling), and 1 (strong pain felt by the panel). And strong irritation such as tingling). The average score of the five panel scoring results was calculated. Subsequently, as an evaluation of the sensory stimulus, the calculated average point is defined as "good" if it is 2.6 or more, "somewhat bad" if 1.6 or more and 2.5 or less, and bad if it is 1.5 or less. The evaluation results are shown in Table 2.

Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 The first (Reducing agent) Ascorbic acid 100 100 100 100 100 100 100 100 2nd (Hair penetrant) benzyl alcohol - 9 9 9 9 9 9 9 Lactic acid 2 2 2 2 2 2 2 2 (Hair Penetrant) 95% Ethanol 10 10 10 10 10 10 10 10 Xanthan gum One One One One One One One One Xylose (per reduction) 5 5 - - - - - - (Reduction Party) Glocos - - 5 - - - - - Dihydroxyacetone (reducing sugar) - - - 5 - - - - Trehalose - - - - - 5 - - Glyoxalic acid (α-oxycarboxylic acid) - - - - - - 5 0.5 Purified water Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount system 100 100 100 100 100 100 100 100 Air reoxidation rate 3 0.1 3.3 0 11.8 9.3 0.2 7.1 PH of the second agent of the desalting agent composition 3 3 3 3 3 3 1.9 2.6 PH of desalting agent composition 2.7 2.7 2.7 2.7 2.7 2.7 1.6 2.2 Sensory stimulation Good Good Good Good Good Good Bad Somewhat poor

From the results in Table 2, the pH of the desalting agent compositions of Examples 1 to 4 in which the second agent contains xylose, glucose or dihydroxyacetone as reducing sugars is determined that the desalting agent composition is glyoxalic acid (? -Oxycarboxylic acid). It was found that it is higher than the pH of the desalting agent compositions of Comparative Examples 3 and 4 because it does not contain). Therefore, evaluation of sensory stimulation maintained "good" about the desalting agent composition of Examples 1-4. In addition, in the desalting agent compositions of Examples 1 to 4, the evaluation of sensory stimulation was maintained as "good" and the air reoxidation rate was kept low by the reducing sugar. The air reoxidation rate of the desalting agent composition of Example 2, in which the second agent contained benzyl alcohol as the hair penetrating agent, was kept lower compared to the air reoxidation rate of the desalting agent composition of Example 1.

On the other hand, in the desalting agent composition of the comparative example 1 which does not contain a reducing sugar, and the desalting agent composition of the comparative example 2 which contains trehalose instead of reducing sugar, it was confirmed that air reoxidation rate cannot be kept low. In the desalting agent composition of Comparative Example 3 in which the composition contained glyoxalic acid, although the air reoxidation rate was low, the evaluation of sensory stimulation could not be kept "good". In Comparative Example 4, when the content of glyoxane was lowered in comparison with Comparative Example 3 in order to reduce the sensory stimulation, it was confirmed that the air reoxidation rate was higher than in Comparative Example 3. Therefore, it was confirmed that glyoxalic acid not only reduced the sensory stimulus but also decreased the air reoxidation rate.

Claims (10)

A desalting agent composition which is used for desalting fibers dyed with an oxidative dye containing a dye intermediate having an amino group and which contains a reducing agent to effect desalting of the fibers by a reducing action of a reducing agent, further comprising a reducing sugar. Desalting agent composition. The desalting agent composition according to claim 1, wherein the reducing sugar is a monosaccharide. The desalting agent composition according to claim 2, wherein the monosaccharide is at least one member selected from the group consisting of xylose and dihydroxyacetone. The desalting agent composition according to any one of claims 1 to 3, wherein the reducing agent is at least one selected from the group consisting of ascorbic acid, thioglycolic acid, cysteine, mercapto compound, sulfite, hydrogen sulfite, and thiosulfate. The desalting agent composition according to any one of claims 1 to 4, further comprising a hair penetrant. The desalting agent composition according to claim 5, wherein the hair penetrating agent is an aromatic alcohol. The desalting agent composition according to claim 5 or 6, wherein the reducing sugar is xylose and the mass ratio of xylose to hair penetrant is in the range 0.1-5. The desalting agent composition according to any one of claims 1 to 7, wherein the reducing sugar is xylose and the content of xylose in the desalting agent composition is in the range of 0.5-30 mass%. The desalting agent composition according to claim 5 or 6, wherein the reducing sugar is dihydroxyacetone, and the mass ratio of dihydroxyacetone to hair penetrant is in the range of 0.05-5. The desalting agent composition according to any one of claims 1 to 6 and 9, wherein the reducing sugar is dihydroxyacetone, and the content of dihydroxyacetone in the desalting agent composition is in the range of 0.05-30 mass%.