JP7189825B2 - Hair cleanser composition - Google Patents

Description

The present invention provides a hair cleanser which has excellent hue stability, fine foam quality when shampooing, generates coacervate even at a low concentration, provides excellent finger combability during rinsing, and maintains good finger combability even after drying. Regarding the composition.

Acyl amino acid-based anionic surfactants are used in body and hair cleansers as excellent surfactants with low irritation that have cleansing action without damaging the skin or hair (Patent Documents 1 to 3). ).
Hair entanglement during shampooing or rinsing may cause split ends or split ends. In addition, the ease of entangling the hair changes depending not only on the use of shampoo but also on the condition of the hair after drying. Therefore, it is required that the hair is easy to pass through with fingers when rinsing the hair, and that the hair has a smooth finish that is easy to pass through with fingers even after drying.
As a known technique for suppressing tangling of hair, there is a method of blending an oil component to impart slipperiness to the hair. Among them, silicone is widely used in shampoos because it is superior in terms of ease of finger combability during rinsing and suppression of dry feeling after drying. On the other hand, with shampoos containing silicone, there is a problem that the silicone may remain on the hair, impairing the effects of hair perming and hair coloring. Some hair cleansing agents that do not use silicone have been developed, but they have drawbacks such as insufficient finger combability and smooth finish during rinsing.
In order to compensate for this drawback, a method is known in which a phenomenon called coacervation is utilized to improve finger combability during shampooing and rinsing. This phenomenon occurs when specific surfactants and cationic polymers form lubricating aggregates (coacervates) in a diluted state from shampooing to rinsing, become insoluble in water, precipitate, and adhere to the surface of the hair. shows the effect of improving the finger combability of the hair from shampooing to rinsing. As a technology that uses this method to improve finger combability during rinsing with shampoo, for example, a combination of carboxyethyl cellulose, a sulfate-type surfactant, and a cationic polymer such as cationized cellulose or cationized starch (patented Document 4), a combination of an anionic surfactant, a monoalkyl glyceryl ether, and a cationized hydroxypropyl cellulose (Patent Document 5), etc. have been proposed. However, coacervate is less likely to form depending on the type of surfactant to be mixed, and the creaky feeling during shampooing and rinsing cannot necessarily be improved.
Among them, anionic surfactants change the range of coacervate formation depending on the type of counterion, and compared to alkali metal salts such as sodium salts and potassium salts, triethanolamine salts, which are organic salts, have a wider dilution concentration range. formed a coacervate at 100°C and had better finger combability during rinsing. However, triethanolamine salts of anionic surfactants have a problem of discoloration when stored at high temperatures.

JP 2001-140000 Special table 2003-521570 JP 2010-138075 JP 2012-111701 JP 2012-232933

Developed a hair cleanser composition that has excellent hue stability, fine foam quality when washing hair, forms coacervate even at low concentrations, provides good finger combability during rinsing, and maintains good finger combability even after drying. It has not been.

The present inventors have made intensive studies to solve the above problems, and found that a neutralized salt of a specific acylamino acid-based anionic surfactant and a specific alkanolamine and a cationic polymer exhibit stable color hue. The present invention has been accomplished by finding that the composition has excellent properties, produces fine foam quality when washing hair, forms coacervate even at a low concentration, provides good finger-combability on hair during rinsing, and maintains good finger-combination even after drying.

（式中、Ｒ^１ＣＯは炭素数８～２２の脂肪酸アシル基を示し、ｎは１～２の整数を示す。）

（式中、Ｒ^２はメチル基、Ｒ^３とＲ^４は同一でも異なっていてもよい炭素数２～３のヒドロキシアルキル基を表す。） That is, the present invention
Component (a): 5 to 25% by weight of neutralized salt of N-acylamino acid represented by general formula (1) and alkanolamine represented by general formula (2)
Component (b): 0.05 to 2% by weight of cationic polymer
It relates to a hair cleansing composition characterized by comprising

(In the formula, R ¹ CO represents a fatty acid acyl group having 8 to 22 carbon atoms, and n represents an integer of 1 to 2.)

(In the formula, R ² represents a methyl group, and R ³ and R ⁴ represent a hydroxyalkyl group having 2 to 3 carbon atoms which may be the same or different.)

The N-acyl amino acid used in the hair cleansing composition of the present invention is produced by a known method such as the Schotten-Baumann reaction. As N-acyl amino acids, lauroyl sarcosine (available commercially as Soypon (registered trademark) SLA manufactured by Kawaken Fine Chemicals Co., Ltd.), cocoyl sarcosine (Soypon SCA manufactured by Kawaken Fine Chemicals Co., Ltd.), myristoyl sarcosine, oleoyl sarcosine ( Soypon SOA manufactured by Kawaken Fine Chemical Co., Ltd.), octanoyl sarcosine, behenoyl sarcosine, lauroyl methylalanine (Alanon (registered trademark) ALA manufactured by Kawaken Fine Chemical Co., Ltd.), cocoyl methyl alanine (Alanone ACA manufactured by Kawaken Fine Chemical Co., Ltd.) , myristoylmethylalanine, oleoylmethylalanine, octanoylmethylalanine, behenoylmethylalanine and the like can be used.

The alkanolamine used in the hair cleansing composition of the present invention is produced by a known method such as addition reaction of amines with ethylene oxide or propylene oxide. Examples of alkanolamine that can be used include N-methyldiethanolamine, N-methylethanolamine adduct of 1 mol of propylene oxide, and N-methyldiisopropanolamine.

In addition to the effect of improving color stability, the hair cleansing composition of the present invention provides fine foam quality during hair washing, forms coacervate even at low concentrations, provides good finger combability during rinsing, and is effective after drying. It is possible to impart an excellent effect that good finger combability continues until.

Embodiments of the present invention will be described below.
Component (a) of the hair cleansing composition of the present invention is a neutralized salt of a specific N-acylamino acid and a specific alkanolamine. The effect of improving color stability, which is required by the present invention, is fine foam quality when washing hair, generates coacervate even at a low concentration, and has good finger combability during rinsing, and continues to be combable with fingers even after drying. Considering the excellent effect of the N-acylamino acid, it is particularly preferable to use at least one of N-acylsarcosine and N-acyl-N-methyl-β-alanine as the N-acylamino acid.

In general formula (1), N-acylamino acids having fatty acid acyl groups having 8 to 22 carbon atoms can be used for R ¹ CO, preferably those having 10 to 18 carbon atoms, and particularly preferably those having 12 to 14 carbon atoms. If the number of carbon atoms is 7 or less, there is a problem in terms of odor, and if the number of carbon atoms is 23 or more, there is a problem in terms of low-temperature stability of the hair cleansing composition.

The effect of improving color stability, which is required by the present invention, is fine foam quality when washing hair, generates coacervate even at a low concentration, and has good finger combability during rinsing, and continues to be combable with fingers even after drying. Considering the excellent effect, as alkanolamine, N-methyldiethanolamine, N-methylethanolamine propylene oxide 1 mol adduct, N-methyldiisopropanolamine, etc. can be used, and N-methyldiethanolamine and N-methyl A 1 mol propylene oxide adduct of ethanolamine is preferred, and a 1 mol propylene oxide adduct of N-methylethanolamine is particularly preferred.

The neutralized salt of the specific N-acylamino acid and the specific alkanolamine, which is the component (a) of the hair cleansing composition of the present invention, can be contained in an amount of 5 to 25% by weight, and 5 to 23% by weight is Preferably, 5 to 20% by weight is particularly preferred. If it is less than 5% by weight, the foaming power is not sufficient, and if it exceeds 25% by weight, the low-temperature stability deteriorates.

Component (b) of the hair cleansing composition of the present invention is a cationic polymer. Cationic polymers include polyquaternium-10, polyquaternium-7, cationized guar gum, polyquaternium-107, polyquaternium-11, polyquaternium-22, polyquaternium-30, polyquaternium-39, polyquaternium-4, polyquaternium-47, polyquaternium-48, Polyquaternium-49, Polyquaternium-50, Polyquaternium-51, Polyquaternium-52, Polyquaternium-6, Polyquaternium-61, Polyquaternium-64, Polyquaternium-65, Polyquaternium-67, Polyquaternium-72, Polyquaternium-73, Polyquaternium-92, cationized Locust bean gum, cationized tara gum, cationized fenugreek gum, cationized cassia gum, cationized dextran-2 and the like can be used.
Considering the excellent effects sought by the present invention, such as fine foam quality during hair washing, generation of coacervate even at low concentrations, good finger combability during rinsing, and continued good finger combability even after drying, It is particularly preferred to use at least one of polyquaternium-10, polyquaternium-7, cationized guar gum as cationic polymer.

The cationic polymer that is component (b) of the hair cleansing composition of the present invention can be contained in an amount of 0.05 to 2% by weight, preferably 0.05 to 1.5% by weight, and 0.05 to 1% by weight. % is particularly preferred. If the amount is less than 0.05% by weight, finger combability is poor during rinsing.

Component (c) of the hair cleansing composition of the present invention is an amphoteric surfactant. Component (c) has the effect of improving the hue stability of component (a), produces fine foam when shampooing, forms coacervate even at low concentrations, provides good finger combability during rinsing, and maintains hair even after drying. It can be blended for the purpose of enhancing the excellent effect of maintaining good finger combability. Component (c) may comprise 1-10% by weight, preferably 1-9% by weight, particularly preferably 1-8% by weight. If it is less than 1% by weight, the effect of component (a) cannot be enhanced sufficiently, and if it exceeds 10% by weight, the effect of component (a) is impaired.

Examples of amphoteric surfactants include coconut fatty acid amidopropyldimethylaminoacetate betaine (commercially available Softazolin (registered trademark) CPB, CPB-R manufactured by Kawaken Fine Chemicals Co., Ltd.), hydroxyalkyl (C12-14) hydroxy Ethyl sarcosine (Softazoline LMEB, LMEB-R manufactured by Kawaken Fine Chemical Co., Ltd.), Lauramidopropyl hydroxysultaine (Softazoline LSB, LSB-R manufactured by Kawaken Fine Chemical Co., Ltd.), Lauramidopropyl amine oxide (Kawaken Fine Chemical Co., Ltd. Softazoline LAO-C), Na cocoamphoacetate (Softazoline CH, CH-R, CL, CL-R manufactured by Kawaken Fine Chemicals Co., Ltd.), Lauramidopropyl betaine (Softazoline LPB, LPB-R manufactured by Kawaken Fine Chemicals Co., Ltd.), Palm kernel fatty acid amidopropyl betaine (Softazoline PKPB manufactured by Kawaken Fine Chemicals Co., Ltd.), Sodium lauroamphoacetate (Softazoline LHL, LHL-SF manufactured by Kawaken Fine Chemicals Co., Ltd.), Sodium cocoamphopropionate (Softazoline NS manufactured by Kawaken Fine Chemicals Co., Ltd.) , SF, SFD), coconut oil alkyl betaine, lauryl betaine, lauryl hydroxysultaine, lauryl dimethylamine oxide and the like are particularly preferably used. A desalted purified product may be used as the amphoteric surfactant when the transparency of the formulation is required.

The cleansing composition of the present invention is mainly used for cosmetics, and can be used as cleansing cosmetics such as hair shampoo, body soap, body shampoo, hand soap, cleansing foam, facial cleanser, solid soap, and transparent soap. can.

Further, the detergent composition of the present invention can be used in combination with known components as long as they do not impair the purpose of the present invention. Examples of N-acylamino acids other than the N-acylamino acids of general formula (1) include N-acyl-N-hydroxyethyl-β-alanine, acylglutamic acid, acylglycine, acylaspartic acid, acylβalanine, acylmethyltaurine, and the like. Available.

Examples of anionic surfactants other than N-acyl amino acids include fatty acids, polyoxyethylene coconut oil fatty acid monoethanolamide phosphate (available commercially as Amizet (registered trademark) 52P manufactured by Kawaken Fine Chemicals Co., Ltd.), and laureth. Sulfuric acid, lauryl sulfuric acid, acyl isethionic acid, α-olefin sulfonic acid, polyoxyethylene lauryl ether acetic acid, polyoxyethylene coconut oil alkyl ether acetic acid, polyoxyethylene tridecyl ether acetic acid, polyoxyethylene lauroyl ethanolamide ether acetic acid, polyoxyethylene Coconut fatty acid ethanolamide ether acetic acid, Polyoxyethylene N-methyl-lauroyl ethanolamide ether acetic acid, Polyoxyethylene N-ethyl-lauroyl ethanolamide ether acetic acid, Polyoxyethylene N-methyl-coconut fatty acid ethanolamide ether acetic acid, Poly Oxyethylene N-ethyl-coconut fatty acid ethanolamide ether acetic acid, polyoxyethylene lauryl sulfosuccinic acid, polyoxyethylene coconut fatty acid sulfosuccinic acid, polyoxyethylene lauroyl ethanolamide sulfosuccinic acid, polyoxyethylene coconut fatty acid ethanolamide sulfosuccinic acid, Polyoxyethylene N-methyl-lauroylethanolamide sulfosuccinic acid, Polyoxyethylene N-methyl-coconut fatty acid ethanolamide sulfosuccinic acid, Polyoxyethylene N-ethyl-lauroylethanolamide sulfosuccinic acid, Polyoxyethylene N-ethyl-coconut oil Fatty acid ethanolamide sulfosuccinic acid and the like can be used.

For the purpose of adjusting the viscosity, etc., a nonionic surfactant can be blended as needed. As nonionic surfactants, PPG-2 cocamide (available commercially as Amizet 1PC manufactured by Kawaken Fine Chemicals Co., Ltd.), cocamide DEA (Amisol (registered trademark) CDE-G manufactured by Kawaken Fine Chemicals Co., Ltd.), palm kernel oil fatty acid amide DEA (Amisol KD-1 manufactured by Kawaken Fine Chemical Co., Ltd.), cocamide DEA (1:2) (Amisol CD manufactured by Kawaken Fine Chemical Co., Ltd.), lauramide DEA (Amisol LDE-G manufactured by Kawaken Fine Chemical Co., Ltd.), (Lauramide/Myristamide) DEA (Amisol LMDE-Y manufactured by Kawaken Fine Chemicals Co., Ltd.), Cocamide MEA (Amisol CME manufactured by Kawaken Fine Chemicals Co., Ltd.), Lauramide MIPA (Amisol PLME-A manufactured by Kawaken Fine Chemicals Co., Ltd.), PEG-3 Lauramide (Amidet 2L-Y manufactured by Kawaken Fine Chemical Co., Ltd.), PEG-2 caprylylamine (Formite (registered trademark) 2E8 manufactured by Kawaken Fine Chemical Co., Ltd.), PEG-2 Cocamine (Viscofine manufactured by Kawaken Fine Chemical Co., Ltd. ( (registered trademark) E2C), (lauryl/myristyl) glycol hydroxypropyl ether (Viscosafe (registered trademark) LMPE manufactured by Kawaken Fine Chemicals Co., Ltd.), cocamide methyl MEA, glycerin fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyglycerin fatty acid esters , sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbit fatty acid esters, polyethylene glycol fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene alkyl Phenyl ethers and the like can be used.

Other components used in detergents or cosmetics, such as extracts derived from animals, plants, fish and shellfish, microorganisms, powder components, oil components, waxes, hydrocarbons, higher alcohols, esters, silicones, anti-aging agents, anti-aging agents, etc. Inflammatory agent, anti-androgen agent, hair growth agent, moisturizer, water-soluble polymer, film-forming agent, ultraviolet absorber, antiphlogistic agent, sequestering agent, sugar, amino acids, organic amines, synthetic resin emulsion, pH adjuster, skin Nutrients, vitamins, emulsifiers, thickeners, preservatives, alcohols, antioxidants, antibacterial agents, cooling agents, water, various hair nutrients, coloring materials, fragrances, etc. can be added as needed. can.

Specific examples of ingredients that can be blended are:
Collagen (commercially available products include water-soluble collagen Kawaken P, 0.5% U, Corrupton (registered trademark) S manufactured by Kawaken Fine Chemicals), succinyl carboxymethyl chitosan (Chito Aqua manufactured by Kawaken Fine Chemicals ( registered trademark)), maltitol, sorbitol, glycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, polyhydric alcohols such as glycol, sodium pyrrolidonecarboxylate, sodium lactate, sodium citrate and other organic acids and salts thereof, Hyaluronic acid such as sodium hyaluronate and its salts, yeast and yeast extract hydrolysates, yeast cultures, fermentation metabolites such as lactic acid bacteria cultures, elastin, keratin, sericin and other water-soluble proteins, collagen hydrolysates, hydrolyzed casein Hydrolyzed products, silk hydrolysates, peptides such as sodium polyaspartate and their salts, trehalose, xylobiose, maltose, raffinose, melibiose, sugars such as sucrose, glucose, vegetable viscous polysaccharides, crystalline cellulose, amorphous Polysaccharides such as cellulose, xylan, mannan, galactan, arabinan, arabinoxylan and derivatives thereof, water-soluble chitin, chitosan, pectin, glycosaminoglycans such as chondroitin sulfate and salts thereof and salts thereof, glycine, serine, threonine, alanine, Amino acids such as aspartic acid, tyrosine, valine, leucine, arginine, glutamine and proline, sugar amino acid compounds such as aminocarbonyl reactants, plant extracts such as aloe and horse chestnut, trimethylglycine, urea, uric acid, ammonia, lecithin, lanolin, moisturizing agents such as squalane, squalene, glucosamine, creatinine, nucleic acid-related substances such as DNA and RNA;

Dimethylpolysiloxane, methylphenylpolysiloxane, polyether-modified silicone, polyamino-modified silicone, betaine-modified silicone, alcohol-modified silicone, fluorine-modified silicone, epoxy-modified silicone, mercapto-modified silicone, carboxy-modified silicone, fatty acid-modified silicone, silicone graft polymer, Silicones such as cyclic silicone, alkyl-modified silicone, trimethylsilyl group-terminated dimethylpolysiloxane, silanol group-terminated dimethylpolysiloxane,

Benzoic acid and its salts, salicylic acid and its salts, sorbic acid and its salts, parahydroxybenzoic acid alkyl esters (ethylparaben, butylparaben, etc.) and its salts, dehydroacetic acid and its salts, parachlormetacresol, hexachlorophene, boric acid , resorcin, isopropylmethylphenol, triclosan, hinokitiol, tribromsaran, orthophenylphenol, chlorhexidine gluconate, thiram, photosensitizer No. 201, phenoxyethanol, benzalkonium chloride, benzethonium chloride, halocarban, chlorhexidine chloride, trichlorocarbanide, Antibacterial agents such as tocopherol acetate, pyrithione zinc, phenol, 2,4,4-trichloro-2-hydroxyphenol, hexachlorophene, antiseptics,

Angelica keiskei extract, Gomacha extract, Altea extract, Aloe extract, Apricot extract, Ginkgo biloba extract, Fennel extract, Oolong tea extract, Age extract, Scutellaria root extract, Phellodendron bark extract, Hypericum extract, Dutch mustard extract, Orange extract, Seawater dried matter, Seaweed extract, Hydrolyzed wheat powder, hydrolyzed silk, chamomile extract, carrot extract, wormwood extract, licorice extract, persimmon extract, kiwi extract, cucumber extract, gardenia extract, kumazasa extract, clara extract, walnut extract, grapefruit extract, chlorella extract, mulberry extract, Black tea extract, yeast extract, collagen, salvia extract, soapwort extract, hawthorn extract, rhubarb extract, rhizome extract, perilla extract, linden extract, peony extract, white birch extract, horsetail extract, ivy extract, hawthorn extract, elderberry extract, yarrow extract extract, peppermint extract, sage extract, cnidium extract, assembly extract, soybean extract, sunflower extract, thyme extract, tea extract, clove extract, chimp extract, angelica root extract, tonin extract, dokudami extract, tomato extract, natto extract, carrot extract, garlic extract , Novara extract, honey, hamamelis extract, cypress extract, bisabolol, loquat extract, Bukuryo extract, propolis, loofah extract, peppermint extract, bodaiju extract, hop extract, Madonna lily flower extract, horse chestnut extract, soapberry extract, melissa extract, peach extract, saxifrage extract , Yuzu extract, Artemisia extract, Lavender extract, Lemon extract, Astragalus extract, Rosemary extract, Royal jelly extract and other natural plant extracts, seaweed extracts, herbal medicines,

Arbutin, kojic acid, ascorbic acid and its derivatives such as magnesium ascorbate phosphate, glutathione, licorice extract, clove extract, tea extract, astaxanthin, bovine placenta extract, tocopherol and its derivatives, tranexamic acid and its salts, azulene, gamma - whitening ingredients such as hydroxybutyric acid,

Biopolymers such as deoxyribonucleic acid, collagen, elastin, chitin, chitosan, hydrolyzed eggshell membrane, amino acids, sodium lactate, urea, sodium pyrrolidonecarboxylate, betaine, moisturizing ingredients such as whey, sphingolipids, ceramides, cholesterol, cholesterol derivatives , oily components such as phospholipids,

Anti-inflammatory agents such as ε-aminocaproic acid, glycyrrhizic acid, β-glycyrrhetinic acid, lysozyme chloride, guaiazulene, hydrocortisone, vitamins (A, B2, B6, C, D, E), calcium pantothenate, biotin, nicotinamide , vitamins such as vitamin C ester,

Active ingredients such as allantoin (available commercially as allantoin manufactured by Kawaken Fine Chemicals Co., Ltd.), diisopropylamine dichloroacetate, 4-aminomethylcyclohexanecarboxylic acid, antioxidants such as tocopherols, carotenoids, flavonoids, tannins, lignans, and saponins organic acids such as citric acid, malic acid, tartaric acid, lactic acid, adipic acid, glutamic acid, aspartic acid, and maleic acid; cell activators such as α-hydroxy acids and β-hydroxy acids;

Nicotinamide, benzyl nicotinate, γ-oryzanol, allantoin, glycyrrhizic acid (salt), glycyrrhetinic acid and its derivatives, hinokitiol, mucidin, bisabolol, eucalyptol, thymol, inositol, saponins (quillayasaponin, azukisaponin, luffa saponin, etc.), tranexamic acid, pantoterethyl ether, ethinyl estradiol, cephalandine, placenta extract, assembly extract, cepharanthine, vitamin E and derivatives thereof, and other blood circulation promoting agents;

Macadamia nut oil, avocado oil, corn oil, cacao oil, evening primrose oil, mink oil, rice bran oil, almond oil, safflower oil, soybean oil, camellia oil, persic oil, olive oil, rapeseed oil, sesame oil, castor oil, sunflower oil, peanut oil Oil, egg yolk oil, cottonseed oil, malt oil, jojoba oil, coconut oil, palm oil, lanolin, squalene, hydrogenated coconut oil, hydrogenated oil, Japanese wax, hydrogenated castor oil, etc.
Hydrocarbons such as squalane, liquid paraffin, petroleum jelly, ceresin, microcrystalline wax, isoparaffin, waxes such as carnauba wax, paraffin wax, whale wax, beeswax, candelilla wax, lanolin, etc.

Higher alcohols such as cetanol, stearyl alcohol, lauryl alcohol, myristyl alcohol, cetostearyl alcohol, oleyl alcohol, behenyl alcohol, lanolin alcohol, hydrogenated lanolin alcohol, hexyldecanol, octyldodecanol, etc.

Esters such as isopropyl myristate, isopropyl palmitate, isopropyl stearate, glycerol 2-ethylhexanoate, butyl stearate, ethyl linoleate,

Polar oils such as diethylene glycol monopropyl ether, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxypropylene butyl ether,

cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, diisostearyl malate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, Synthetic esters such as glyceryl di-2-heptylundecanoate, glyceryl tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaneerythritol tetra-2-ethylhexanoate oils,

Carboxymethyl cellulose, ethyl cellulose, hydroxypropyl cellulose, methyl hydroxypropyl cellulose, starch, soluble starch, carboxymethyl starch, methyl starch, propylene glycol alginate, methyl cellulose, gum arabic, xanthan gum, guar gum, locust bin gum, quince seed, carrageenan, galactan, Pectin, mannan, dextran, succinoglucan, curdlan, gelatin, casein, albumin, collagen, methoxyethylene maleic anhydride copolymer, amphoteric methacrylate copolymer, polyacrylate copolymer, polyvinyl acetate, Polyvinyl alcohol, polyvinyl methyl ether, carboxyvinyl polymer, polyacrylic acid, nitrocellulose, polyethylene glycol fatty acid ester, polyoxyethylene fatty acid ester such as polyethylene glycol distearate, polyoxyethylene fatty acid ester such as polyoxyethylene methyl dioleate glucoside thickeners such as methyl glycosides,

para-aminobenzoic acid and its derivatives, homomethyl-7N-acetylallantyranilate, butylmethoxybenzoylmethane, glyceryl di-paramethoxycinnamate-mono-2-ethylhexanoate, para-methoxycinnamate derivatives such as octylcinnamate , salicylic acid derivatives such as amyl salicylate, benzophenone derivatives such as 2,4-dihydroxybenzophenone, dimethoxybenzylidene dioxoimidazoline ethylhexyl propionate, liquid lanolin acetate, scutellaria root extract, trianilino-p-carboethylhexyloxy-triazine, etc. agent,
cooling agents such as l-menthol and peppermint oil; wound healing agents such as retinol and retinol derivatives;
Perfumes and the like can be blended.

EXAMPLES Hereinafter, the present invention will be specifically described by showing examples and comparative examples, but the present invention is not limited to the following examples.

Production example 1
Production of 1 mol propylene oxide adduct of N-methylethanolamine A 1 liter autoclave was charged with N-methylethanolamine (1.0 mol, manufactured by Tokyo Kasei Kogyo Co., Ltd.), purged with nitrogen, and heated to 95-105°C to propylene. Oxide addition (1.0 mol, manufactured by Tokyo Kasei Kogyo) was carried out. After the propylene oxide was introduced, aging was performed for 1 hour, and the desired product was picked up.
The structure was determined by ¹ H-NMR. δ = 1.1 ppm (3H, d), 2.3 ppm (5H, m), 2.5 ppm (1 H, m), 2.6 ppm (1 H, m), 3.6 ppm (2H, m), 3.8 ppm (1H, m).

In an aqueous solution of lauroyl methylalanine (manufactured by Kawaken Fine Chemicals Co., Ltd., Alanon ALA) and lauroyl sarcosine (manufactured by Kawaken Fine Chemicals Co., Ltd., Soipon SLA), N-methyldiethanolamine (manufactured by Tokyo Chemical Industry Co., Ltd.) and N-methylethanolamine propylene oxide 1 mol Each adduct was added and neutralized to obtain component (a).
As comparative products for component (a), a neutralized salt of lauroyl sarcosine and triethanolamine (manufactured by Tokyo Chemical Industry Co., Ltd.) and a sodium salt of lauroyl methylalanine (using NaOH manufactured by Tokyo Chemical Industry Co., Ltd.) were prepared.

A hair cleansing composition having the blending values shown in Table 1 was prepared. The compounding figures in the table indicate weight % of the pure content. Each hair cleansing composition was adjusted to pH 6 with citric acid (manufactured by Tokyo Kasei Kogyo).
The properties of the prepared hair cleansing composition were evaluated by the various methods described below. Table 1 shows the performance evaluation results.

[Hue Stability]
The hair cleansing composition was stored in a constant temperature bath at 80° C. for one week, and the change in hue was visually observed and evaluated.
◎: Very good (almost no change in hue)
○: Good (there is a slight change in hue)
△: Slightly inferior (there is a change in hue)
×: Poor (there is considerable change in hue)

[Evaluation of Coacervate Formation Concentration]
The prepared hair cleansing composition was diluted with purified water, and the lowest concentration of the diluted solution at which coacervate was visually observed was taken as the concentration of coacervate formation. Evaluation criteria are as follows.
◎: very good (minimum concentration of coacervate generated: less than 0.02% by weight)
○: good (minimum concentration of coacervate generated: 0.02% by weight or more and less than 0.10% by weight)
△: Slightly inferior (minimum concentration at which coacervate was formed: 0.10% by weight or more and less than 0.20% by weight)
×: Poor (minimum concentration at which coacervate was formed: 0.20% by weight or more)

[Evaluation of fineness of foam quality, finger combability during rinsing, and finger combability after drying]
Four bundles of kamoji (30 cm, 10 g) were sufficiently wetted, and 1 mL of the hair cleansing composition was applied to wash the hair. The finger combability after drying with a commercially available dryer was sensory evaluated by 10 expert panelists. In addition, the evaluation criteria are as follows.
◎: Very good (8 to 10 out of 10 people answered that it was good)
○: Good (6 to 7 out of 10 people answered that it was good)
△: Slightly inferior (3 to 5 out of 10 people answered that it was good)
×: Poor (0 to 2 out of 10 people answered that it was good)

（＊１）：カチナール（登録商標）ＨＣ－２００（東邦化学工業社製）
（＊２）：ＭＥＲＱＵＡＴ（登録商標）５５０（Ｌｕｂｒｉｚｏｌ社製）
（＊３）：カチナールＣＧ－１００（東邦化学工業社製）
（＊４）：ソフタゾリンＣＰＢ（川研ファインケミカル社製）

(*1): Catinal (registered trademark) HC-200 (manufactured by Toho Chemical Industry Co., Ltd.)
(*2): MERQUAT (registered trademark) 550 (manufactured by Lubrizol)
(*3): Catinal CG-100 (manufactured by Toho Chemical Industry Co., Ltd.)
(*4): Softazolin CPB (manufactured by Kawaken Fine Chemicals)

Regarding the performance evaluation in Table 1, it can be seen that Examples 1 to 9 prepared within the scope of the hair cleansing composition of the present invention have high hue stability. The concentration of coacervate formation is very low, and it is believed that coacervate is formed even during hair rinsing. In addition, results were obtained that the foam quality was fine when shampooing, the finger combability was good during rinsing, and the finger combability after drying was also good.

The hair cleansing composition of Comparative Example 1 had poor hue stability and could not withstand practical use. The hair cleansing composition of Comparative Example 2 did not form coacervate at a low concentration, and had poor foam quality during hair washing, finger combability during rinsing, and finger combability after drying, and was not suitable for practical use. there were.
The hair cleansing composition of Comparative Example 3, in which the component (a) was outside the scope of the present invention, was not evaluated because it had low foaming power and was difficult to wash. The hair cleansing composition of Comparative Example 4 was not evaluated because precipitates were observed at room temperature.
The hair cleansing composition of Comparative Example 5, in which the component (b) was outside the scope of the present invention, did not generate coacervate at a low concentration, and had poor finger combability during rinsing and after drying. was intolerable. In addition, the hair cleansing composition of Comparative Example 6 had poor finger combability after drying, and was not suitable for practical use.
The hair cleansing composition of Comparative Example 7, in which the component (c) was outside the scope of the present invention, did not form coacervate at a low concentration, had poor finger combability during rinsing, and was not suitable for practical use. rice field. In addition, the hair cleansing composition of Comparative Example 8 had poor foam quality during hair washing and poor combability with fingers during rinsing, and was not suitable for practical use.

Furthermore, the following formulations were prepared within the scope of the present invention. "% by weight" described in the Examples is the content of each component in the entire hair cleansing composition obtained, and is the weight % of the pure content. All of them are hair cleansing compositions that have high hue stability, fine foam quality when shampooing, generate coacervate even at low concentrations, and have good finger combability on hair during rinsing, and continue to be combable with fingers even after drying. was a thing.

Example 10
Hair shampoo Neutralized salt of lauroylmethylalanine and alkanolamine of Production Example 1 20% by weight
Hydroxyalkyl (C12-14) hydroxyethyl sarcosine (demineralized refined product) (*5) 1% by weight
Polyquaternium-10 0.3% by weight
Polyquaternium-7 0.4% by weight
Cationic guar gum 0.3% by weight
PEG-2 cocamine (*6) 2% by weight
Citric acid Water adjusted to pH 6 Balance performance evaluation results were: color stability ⊚, concentration of coacervate formation ⊚, fineness of foam quality ⊚, finger combability during rinsing ⊙, finger combability after drying ⊙.

Example 11
Hair shampoo Lauroyl sarcosine and neutralized salt of alkanolamine of Production Example 1 5% by weight
Lauramidopropyl hydroxysultaine (demineralized purified product) (*7) 8% by weight
Polyquaternium-10 0.05% by weight
PPG-2 cocamide (*8) 2% by weight
Citric acid Water adjusted to pH 6 Balance performance evaluation results were: color stability ⊚, concentration of coacervate formation ⊚, fineness of foam quality ⊚, finger combability during rinsing ⊙, finger combability after drying ⊙.

Example 12
22% by weight of neutralized salt of hair shampoo cocoyl methylalanine (*9) and alkanolamine of Production Example 1
Neutralized salt of oleoyl sarcosine (*10) and alkanolamine of Production Example 1 1% by weight
Sodium cocoamphoacetate (demineralized purified product) (*11) 9% by weight
Polyquaternium-7 1.8% by weight
Cationic guar gum 0.2% by weight
Cocamide MEA (*12) 1% by weight
Citric acid Water adjusted to pH 6 Balance performance evaluation results were: color stability ⊚, coacervate formation concentration ⊚, fineness of foam quality ◯, finger combability during rinsing ◯, finger combability after drying ◯.

Example 13
Hair shampoo cocoyl sarcosine (*13) and neutralized salt of alkanolamine of Production Example 1 19% by weight
Polyquaternium-10 0.5% by weight
Cocamidomethyl MEA (*14) 2% by weight
Citric acid Water adjusted to pH 6 Balance performance evaluation results were: color stability ⊚, coacervate formation concentration ⊙, fineness of foam quality ⊙, finger combability during rinsing ⊙, finger combability after drying ⊙.

Example 14
Hair shampoo Neutralized salt of lauroylmethylalanine and alkanolamine of Production Example 1 12% by weight
Lauramidopropylamine oxide (*15) 5% by weight
Polyquaternium-10 0.2% by weight
Polyquaternium-7 1.3% by weight
Cocamide DEA (*16) 2% by weight
PEG-2 caprylylamine (* 17) 0.5% by weight
Methylparaben (*18) 0.2% by weight
Citric acid pH adjusted to 6.2 Water Balance performance evaluation results were: color stability ◎, coacervate formation concentration ◎, fineness of foam quality ◎, finger combability during rinsing ◎, finger combability after drying ○ .

(*5): Softazolin LMEB-R (manufactured by Kawaken Fine Chemicals Co., Ltd.)
(*6): Viscofine E2C (manufactured by Kawaken Fine Chemicals)
(* 7): Softazolin LSB-R (manufactured by Kawaken Fine Chemicals Co., Ltd.)
(*8): Amizet 1PC (manufactured by Kawaken Fine Chemicals)
(*9): Alanone ACA (manufactured by Kawaken Fine Chemicals)
(*10): Soypon SOA (manufactured by Kawaken Fine Chemicals)
(*11): Softazolin CH-R (manufactured by Kawaken Fine Chemicals Co., Ltd.)
(*12): Amisole CME (manufactured by Kawaken Fine Chemicals Co., Ltd.)
(*13): Soypon SCA (manufactured by Kawaken Fine Chemicals)
(* 14): Aminone (registered trademark) C-11S (manufactured by Kao Corporation)
(*15): Softazolin LAO-C (manufactured by Kawaken Fine Chemicals Co., Ltd.)
(*16): Amizol CDE-G (manufactured by Kawaken Fine Chemicals Co., Ltd.)
(*17): Formate 2E8 (manufactured by Kawaken Fine Chemicals Co., Ltd.)
(* 18): Methylparaben (manufactured by Tokyo Chemical Industry Co., Ltd.)

As described above, the present invention has the problems to be solved, such as excellent color stability, fine foam quality during hair washing, generation of coacervate even at low concentrations, good finger combability during rinsing, and even after drying. It was found to be a hair cleansing composition that continues to be easy to comb with fingers.

The hair cleansing composition of the present invention has excellent hue stability, fine foam quality when washing hair, forms coacervate even at a low concentration, provides good finger combability during rinsing, and maintains good finger combability even after drying. It can be suitably used as a hair cleansing composition that keeps on.

Claims (3)

Component (a): 5 to 25% by weight of neutralized salt of N-acylamino acid represented by general formula (1) and alkanolamine represented by general formula (2)
Component (b): 0.05 to 2% by weight of cationic polymer
A hair cleansing composition comprising:

(In the formula, R ¹ CO represents a fatty acid acyl group having 8 to 22 carbon atoms, and n represents an integer of 1 to 2.)

(In the formula, R ² represents a methyl group, and R ³ and R ⁴ represent a hydroxyalkyl group having 2 to 3 carbon atoms which may be the same or different.) Alkanolamine is represented by the following general formula (3)

( ^In the formula, R5 represents a methyl group, R6 represents a hydroxyalkyl group having ² carbon atoms, and ^R7 represents a hydroxyalkyl group having 3 carbon atoms.)
2. The hair cleansing composition according to claim 1, which is an alkanolamine represented by: 3. The hair cleansing composition according to claim 1, further comprising 1 to 10% by weight of component (c): an amphoteric surfactant.