WO2022085432A1 - Solid shampoo - Google Patents

Solid shampoo Download PDF

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Publication number
WO2022085432A1
WO2022085432A1 PCT/JP2021/036785 JP2021036785W WO2022085432A1 WO 2022085432 A1 WO2022085432 A1 WO 2022085432A1 JP 2021036785 W JP2021036785 W JP 2021036785W WO 2022085432 A1 WO2022085432 A1 WO 2022085432A1
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WIPO (PCT)
Prior art keywords
hair
less
component
mass
solid
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PCT/JP2021/036785
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French (fr)
Japanese (ja)
Inventor
克行 幸
Original Assignee
花王株式会社
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Publication of WO2022085432A1 publication Critical patent/WO2022085432A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36Carboxylic acids; Salts or anhydrides thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36Carboxylic acids; Salts or anhydrides thereof
    • A61K8/365Hydroxycarboxylic acids; Ketocarboxylic acids
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/86Polyethers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • A61Q5/02Preparations for cleaning the hair

Definitions

  • the present invention relates to a solid hair cleanser.
  • a step of washing (washing step) and a step of rinsing the hair with a small amount of water, absorbing the rinsed water with a water-absorbing material and collecting it (rinsing step) are performed in order, and further, a step of drying the washed hair (drying). Step) is performed.
  • the hair washing process is complicated, and in particular, washing the hair with a hair washing agent is a heavy burden on the work. If the hair washing process is complicated, it also leads to a decrease in the frequency of hair washing of the care recipient in the medical field and the long-term care field where there are few manpower.
  • hair washing proposals that can reduce the burden of hair washing behavior at medical and nursing care sites are being considered.
  • a hair washing action in which the hair can be washed by immersing the hair in a hair washing liquid, and the hair can be pulled up from the hair washing liquid and used as it is in the drying process after soaking, the whipping and rinsing steps of the hair washing agent can be performed. It becomes unnecessary, and there is no possibility that the hair cleaning agent is left unrinsed.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2018-27969 describes a solid bathing agent containing a bicarbonate, a predetermined organic acid, anhydrous sodium carbonate and / or anhydrous potassium carbonate, immediately after dissolving the solid bathing agent.
  • the pH of the aqueous solution is 5.5 to 9.0, and the water in which the solid bath agent is dissolved is brought into contact with the hair for washing, and the bicarbonate ion in the water is suppressed from being blocked by the bicarbonate ion blocking substance.
  • Patent Document 2 Japanese Patent Laid-Open No. 2020-506222
  • a fiber formed from a predetermined amount of a detergency surfactant and a water-soluble polymer structural agent, a predetermined amount of a solid metal salt, and a solid acid are described.
  • a soluble solid such as a hair shampoo comprising preformed effervescent agglomerated particles containing, and a ratio of fibers to effervescent agglomerated particles of from about 1: 0.05 to about 1: 2. It is disclosed that the structure can be manufactured within the desired cost and rate parameters, can improve the dissolution properties of solid products, and can provide an interesting experience of foaming when mixed with water.
  • the present invention relates to the following.
  • the mass ratio [ ⁇ (A) + (B) ⁇ / (C)] is 4.0 or more and 24.0 or less.
  • a method for cleaning hair which comprises the following step (I) or step (II).
  • the solid hair cleanser of the present invention contains a component (A): an organic acid, a component (B): a carbonate, and a component (C): a nonionic surfactant, and is a component (a component) with respect to the component (C).
  • the mass ratio [ ⁇ (A) + (B) ⁇ / (C)] of the total amount of A) and the component (B) is 4.0 or more and 24.0 or less.
  • the solid hair detergent of the present invention is a hair detergent that is solid at 25 ° C. and is used by dissolving it in water, and its dosage form is preferably powder or tablet, and more preferably tablet.
  • the solid hair cleaning agent of the present invention can be used to immerse the hair in water during carbon dioxide foaming to which the solid hair cleaning agent is added, without performing an operation of foaming and cleaning the cleaning agent on the hair. Or, it is possible to wash the hair simply by immersing the hair in water and then adding a solid hair cleansing agent to the water, and it has high detergency and can prevent undissolved residue of the hair cleansing agent and reattachment of sebum and the like. It becomes a hair cleanser.
  • the water after adding the solid hair cleansing agent of the present invention used for hair washing is also referred to as "hair cleansing liquid”.
  • "reattachment of undissolved hair cleaning agent and sebum" is also simply referred to as "reattachment”.
  • Patent Document 1 has room for improvement in detergency when used as a hair cleaning agent for immersing and cleaning hair. Especially for stains such as sebum, it is important to prevent reattachment to hair. Further, if there is a residue of the solid hair detergent that remains undissolved in water, it may reattach to the hair and the feel of the hair after washing may be deteriorated. Further, in the technique disclosed in Patent Document 2, since a large amount of detergency surfactant is used in the soluble solid structure, when it is used as a hair cleansing agent, a whipping and rinsing step is required as a hair washing action. It is inferred that.
  • the present invention is a solid hair cleansing agent used by dissolving it in water, and it is possible to wash the hair simply by immersing the hair, and the hair cleansing property is high.
  • the present invention relates to a solid hair cleanser that can also suppress adhesion.
  • the present inventor is a solid hair cleaning agent containing an organic acid and a carbonate and capable of generating carbonic acid gas when dissolved in water, and further containing a nonionic surfactant, and the nonion. It has been found that a solid hair cleaning agent in which the mass ratio of the total amount of organic acid and carbonate to the sex surfactant is in a predetermined range can solve the above-mentioned problems. According to the solid hair cleansing agent of the present invention, it is possible to wash the hair simply by immersing the hair, the cleansing property is high, and the undissolved residue of the hair cleansing agent and the reattachment of sebum and the like to the hair can be suppressed.
  • the operation of lathering the washing agent on the hair and washing after washing the hair can be omitted, so that the burden of the hair washing action in the medical field and the nursing field can be reduced. It is also possible to suppress a decrease in the frequency of hair washing.
  • the reason why the solid hair cleansing agent of the present invention exerts the above effect is not clear, but it is considered as follows.
  • the solid hair cleaning agent of the present invention contains an organic acid as a component (A) and a carbonate as a component (B) to generate carbon dioxide gas when dissolved in water.
  • A organic acid
  • B carbonate
  • the hydrophobic carbon dioxide foam surface is such as sebum. It has the effect of adsorbing and removing dirt. This is excellent only by immersing the hair in water during carbon dioxide foaming to which a solid hair cleansing agent has been added, or by immersing the hair in water and then adding the solid hair cleansing agent to the water.
  • the nonionic surfactant which is the component (C) also has sebum detergency and has an effect of suppressing reattachment. Then, by setting the mass ratio [ ⁇ (A) + (B) ⁇ / (C)] of the total amount of the component (A) and the component (B) to the component (C) within a predetermined range, it is dissolved in water. It is considered that a solid hair cleansing agent having excellent sebum cleansing property and reattachment suppressing effect can be obtained.
  • the solid hair cleansing agent of the present invention contains an organic acid as a component (A).
  • the solid hair cleansing agent of the present invention is a solid hair cleansing agent that can generate carbon dioxide gas by the action with the component (B) described later when dissolved in water. This carbonic acid effervescence makes it possible to wash the hair simply by immersing the hair, and exhibits excellent detergency.
  • Examples of the component (A) include a carboxylic acid-based compound, an organic sulfonic acid-based compound, an organic phosphoric acid-based compound, and ascorbic acid.
  • One or more selected from the group consisting of acid compounds and ascorbic acid is preferable.
  • the carboxylic acid-based compound may be a compound having at least one carboxy group, but a polyvalent carboxylic acid having two or more carboxy groups is preferable from the viewpoint of improving carbonic acid effervescence.
  • Examples of the carboxylic acid compound include aliphatic carboxylic acids and aromatic carboxylic acids, which are fats from the viewpoint of improving the detergency, solubility in water, and the moldability of the solid hair cleaning agent, and from the viewpoint of economic efficiency.
  • Group carboxylic acids are preferred.
  • Examples of the aliphatic carboxylic acid include oxalic acid, fumaric acid, succinic acid, tartrate acid, malic acid, citric acid, maleic acid, glutaric acid, adipic acid and the like, and examples of the aromatic carboxylic acid include benzoic acid, salicylic acid and pyrrolidone. Carboxylic acid and the like can be mentioned. As these organic acids, one kind or two or more kinds can be used.
  • the component (A) one or more selected from the group consisting of succinic acid, tartaric acid, malic acid, citric acid, and ascorbic acid is preferable, and the component (A) is selected from the group consisting of succinic acid, malic acid, and citric acid. One or more of them is preferable, and succinic acid is more preferable.
  • the solid hair cleanser of the present invention contains a carbonate as a component (B).
  • the component (B) When the solid hair cleansing agent is dissolved in water, the component (B) generates carbon dioxide gas by the action with the component (A), whereby excellent cleansing property can be exhibited.
  • the component (B) includes alkali metal carbonates such as sodium carbonate and potassium carbonate; alkaline earth metal carbonates such as calcium carbonate and magnesium carbonate; alkali metal bicarbonates such as sodium hydrogen carbonate and potassium hydrogen carbonate; hydrogen carbonate. Alkaline earth metal bicarbonates such as calcium; and the like; one or more of these can be used.
  • the component (B) preferably contains a bicarbonate.
  • the bicarbonate is preferably one or more selected from the group consisting of sodium hydrogen carbonate and calcium hydrogen carbonate, more preferably containing sodium hydrogen carbonate, and even more preferably sodium hydrogen carbonate.
  • the content of bicarbonate in the component (B) is preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, still more preferably 80% by mass, from the viewpoint of improving detergency. % Or more, more preferably 90% by mass or more, and may be 100% by mass.
  • the solid hair cleansing agent of the present invention contains a nonionic surfactant as a component (C).
  • the component (C) improves the detergency and contributes to the effect of suppressing the reattachment of undissolved hair cleaning agent and sebum and the like.
  • the HLB (hydrophilic-lipophilic balance) value of the component (C) is preferably 10.0 or more, more preferably 10.5, from the viewpoint of improving the detergency and the effect of suppressing reattachment. Above, more preferably 12.0 or more, still more preferably 14.0 or more, preferably 20.0 or less, more preferably 18.5 or less, still more preferably 18.0 or less, still more preferably 17. It is 0 or less, more preferably 16.5 or less.
  • the HLB value of the component (C) is preferably 10.0 or more and 20.0 or less, more preferably 10.5 or more and 18.5 or less, still more preferably 12.0 or more and 18.0 or less, still more preferably.
  • component (C) examples include polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene fatty acid ester, alkyl glucoside, and alkyl alkanolamide. , Alkyl glyceryl ether, higher fatty acid sucrose ester, polyglycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, and one or more selected from the group consisting of alkyl saccharides.
  • polyoxyethylene alkyl ether polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene fatty acid ester, and polyoxyethylene hydrogenated castor bean paste.
  • the average number of moles of oxyethylene groups added in the oil (hereinafter referred to as "the average number of moles of EO added") is preferably 2 or more, more preferably 3 or more, still more preferably, from the viewpoint of improving detergency and reattachment suppressing effect.
  • the average number of moles of EO added is preferably 2 or more and 150 or less, more preferably 3 or more and 80 or less, still more preferably 5 or more and 60 or less, still more preferably 6 or more and 40 or less, still more preferably 8 or more and 40 or less.
  • the EO average number of moles added is a number average value.
  • nonionic surfactants polyoxyethylene alkyl ethers, alkyl glucosides, alkyl alkanolamides, alkyl glyceryl ethers, and alkyl groups in alkyl saccharides, alkenyl groups in polyoxyethylene alkenyl ethers, and polyoxyethylene sorbitan.
  • Fatty acids in fatty acid esters, polyoxyethylene sorbit fatty acid esters, polyoxyethylene fatty acid esters, higher fatty acid sucrose esters, and polyglycerin fatty acid esters are preferably carbon atoms of 8 or more and 22 from the viewpoint of improving detergency and suppressing reattachment.
  • the number of carbon atoms is more preferably 10 or more and 22 or less, and further preferably 12 or more and 20 or less.
  • the component (C) is preferably a polyoxyethylene alkyl ether, a polyoxyethylene alkenyl ether, or a polyoxyethylene sorbitan having an HLB value in the above range from the viewpoint of improving detergency and reattachment suppressing effect.
  • esters and polyoxyethylene cured castor oil more preferably one selected from the group consisting of polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene cured castor oil. That is all.
  • a commercially available product can also be used as the component (C). Specific examples thereof include “Leodor TW-S320V” (polyoxyethylene sorbitan tristearate (20EO), HLB value 10.5) and “Emanone CH-25” (polyoxyethylene) manufactured by Kao Co., Ltd.
  • Hydrophilic sunflower oil 25EO, HLB value 10.7), "Emulgen 108" (polyoxyethylene (6) lauryl ether, HLB value 12.1), “Emanon CH-40” (polyoxyethylene water) Himashi oil (40EO), HLB value 12.5), “Emulgen 306L” (polyoxyethylene (6) stearyl ether, HLB value 12.8), “Emulgen 420” (polyoxyethylene (13) oleyl) Ether, HLB value 13.6), “Emanon CH-60K” (polyoxyethylene hydrogenated castor oil (60EO), HLB value 14.0), “Emulgen 1620G” (polyoxyethylene (20) 2- Hexyldecyl ether, HLB value 14.0), “Emulgen 116” (polyoxyethylene (16) lauryl ether, HLB value 14.6), “Leodor TW-S120V” (polyoxyethylene sorbitan monostearate (20EO) ), HLB value 14.9), “Emulgen 123P” (pol
  • each component in the solid hair cleansing agent of the present invention is used by dissolving it in water, from the viewpoint of enabling hair washing only by immersing the hair, and from the viewpoint of improving the cleansing property and the effect of suppressing reattachment. Therefore, it is preferably in the following range.
  • the content of the component (A) in the solid hair detergent is preferably 15.0% by mass or more, more preferably 20.0% by mass or more, still more preferably 25.0% by mass or more, from the viewpoint of improving detergency. , More preferably 30.0% by mass or more. Further, from the viewpoint of solubility in water and moldability of the solid hair cleansing agent, it is preferably 45.0% by mass or less, more preferably 42.0% by mass or less, still more preferably 40.0% by mass or less.
  • the content of the component (A) in the solid hair cleaning agent is preferably 15.0% by mass or more and 45.0% by mass or less, more preferably 20.0% by mass or more and 45.0% by mass or less, still more preferably. Is 25.0% by mass or more and 42.0% by mass or less, and more preferably 30.0% by mass or more and 40.0% by mass or less.
  • the content of the component (B) in the solid hair detergent is preferably 15.0% by mass or more, more preferably 20.0% by mass or more, still more preferably 30.0% by mass or more, from the viewpoint of improving detergency. , More preferably 40.0% by mass or more. Further, from the viewpoint of solubility in water and moldability of the solid hair cleansing agent, it is preferably 60.0% by mass or less, more preferably 58.0% by mass or less, and further preferably 55.0% by mass or less.
  • the content of the component (B) in the solid hair cleaning agent is preferably 15.0% by mass or more and 60.0% by mass or less, more preferably 20.0% by mass or more and 60.0% by mass or less, still more preferably. Is 30.0% by mass or more and 58.0% by mass or less, and more preferably 40.0% by mass or more and 55.0% by mass or less.
  • the content of the component (C) in the solid hair detergent is preferably 1.5% by mass or more, more preferably 3.0% by mass or more, still more preferably 3.0% by mass or more, from the viewpoint of improving the detergency and the effect of suppressing reattachment. It is 5.0% by mass or more, more preferably 8.0% by mass or more, and preferably 20.0% by mass or less, more preferably 18.0% by mass or less from the viewpoint of the effect of suppressing reattachment.
  • the content of the component (C) in the solid hair cleaning agent is preferably 1.5% by mass or more and 20.0% by mass or less, more preferably 3.0% by mass or more and 20.0% by mass or less, still more preferably. Is 5.0% by mass or more and 20.0% by mass or less, more preferably 8.0% by mass or more and 18.0% by mass or less.
  • the mass ratio of the total amount of the component (A) and the component (B) to the component (C) [ ⁇ (A) + (B) ⁇ / (C)] is detergency and suppression of reattachment. From the viewpoint of improving the effect, it is 4.0 or more, preferably 4.5 or more, and 24.0 or less, preferably 20.0 or less, more preferably 15.0 or less, still more preferably 12.0 or less. Is.
  • the mass ratio [ ⁇ (A) + (B) ⁇ / (C)] of the total amount of the component (A) and the component (B) to the component (C) is 4.0 or more and 24.0 or less. It is preferably 4.0 or more and 20.0 or less, more preferably 4.0 or more and 15.0 or less, and further preferably 4.5 or more and 12.0 or less.
  • the mass ratio of the component (A) to the component (B) [(A) / (B)] determines the carbonic acid effervescence and its sustainability, and the pH when dissolved in water. From the viewpoint of improving detergency as a desired range, it is preferably 0.20 or more, more preferably 0.40 or more, still more preferably 0.60 or more. Further, from the viewpoint of carbonic acid effervescence and solubility in water, it is preferably 1.50 or less, more preferably 1.20 or less, still more preferably 1.00 or less, still more preferably 0.80 or less.
  • the mass ratio [(A) / (B)] of the component (A) to the component (B) is preferably 0.20 or more and 1.50 or less, more preferably 0.40 or more and 1.20 or less, and further preferably. Is 0.60 or more and 1.00 or less, and more preferably 0.60 or more and 0.80 or less.
  • the total amount of the component (A) and the component (B) in the solid hair cleansing agent is preferably 30.0% by mass or more, more preferably 30.0% by mass or more, from the viewpoint of improving the cleansing property by enhancing the carbonic acid effervescence and its sustainability.
  • it is preferably 98.5% by mass or less, more preferably 97.0% by mass or less, and further preferably 95.0% by mass or less.
  • the total amount of the component (A) and the component (B) in the solid hair cleaning agent is preferably 30.0% by mass or more and 98.5% by mass or less, and more preferably 40.0% by mass or more and 98.5% by mass. % Or less, more preferably 60.0% by mass or more and 97.0% by mass or less, still more preferably 70.0% by mass or more and 95.0% by mass or less, still more preferably 80.0% by mass or more and 95.0% by mass. % Or less.
  • the total amount of the components (A) to (C) in the solid hair cleansing agent is preferably 40% by mass or more, more preferably 60% by mass or more, and further, from the viewpoint of improving the cleansing property and the effect of suppressing reattachment. It is preferably 80% by mass or more, more preferably 90% by mass or more, and may be 100% by mass.
  • the solid hair cleansing agent of the present invention can appropriately contain components usually used in solid preparations as other components.
  • components include synthetic water-soluble polymers such as polyethylene glycol, polyvinylpyrrolidone, sodium polyacrylic acid, polyethyleneimine, and polyvinyl alcohol; Natural water-soluble polymers such as pectin, arabic gum, guar gum, xanthan gum, tragant gum, locust bean gum, dextrin, dextran, agar, starch; carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, cellulose acetate phthalate, propylene glycol alginate Semi-synthetic water-soluble polymers such as esters, oxidized starch, esterified starch, etherified starch, cationic starch; surfactants other than component (C); sodium sulfate, potassium chloride, sodium chloride, potassium nitrate, sodium nitrate, polyphosphate Inorganic salts other than
  • the dosage form (product form) of the solid hair cleansing agent of the present invention when used is preferably a powder or a tablet from the viewpoint of handleability when dissolved in water and used, and from the viewpoint of improving the sustainability of carbonic acid effervescence. From the above, it is more preferably a tablet.
  • the tablet contains a tablet or a briquette mold, and is more preferably a tablet from the viewpoint of moldability.
  • the solid hair cleaning agent of the present invention is a tablet or briquette type agent, it can be produced by using a press tableting machine or a briquette machine according to a conventional method such as a compression molding method.
  • a powder obtained by dry-blending all the components constituting the solid hair cleansing agent of the present invention may be subjected to compression molding, and some of the components may be prepared in advance. After granulation or molding, the mixture obtained by mixing with the remaining components may be subjected to compression molding.
  • the solid hair cleansing agent of the present invention is used by adding it to water and dissolving it.
  • the pH of a 1% by mass aqueous solution of a solid hair cleaning agent at 25 ° C. is preferably 6.0 or less. , More preferably 5.8 or less, still more preferably 5.5 or less, and preferably 4.0 or more, more preferably 4.5 or more.
  • the pH of a 1% by mass aqueous solution of a solid hair cleaning agent at 25 ° C. is in the above range, the pH of the water to which the hair cleaning agent is added (that is, the hair cleaning liquid) is 6.0 when the hair is washed with the solid hair cleaning agent. Since it becomes easy to adjust to the following, the detergency and the effect of suppressing reattachment are improved, and it is possible to omit the rinsing after washing the hair. Specifically, the pH can be measured by the method described in Examples.
  • the present invention provides a method for cleaning hair (hereinafter, also referred to as "method of the present invention"), which comprises the following step (I) or step (II).
  • Step of Adding Agent According to the method of the present invention, it is possible to wash hair simply by immersing the hair in a hair washing liquid without performing an operation of foaming and washing the cleaning agent on the hair. In addition, it is possible to omit rinsing and the like after washing the hair.
  • the hair may be immersed in a hair cleaning solution or water in a dry state, or may be wetted with water and then immersed.
  • the step (I) from the viewpoint of improving the cleansing property of the hair, it is preferable to immerse the hair immediately after adding the solid hair cleansing agent to water. This is because the hair cleaning effect is enhanced by immersing the hair in the hair cleaning solution during carbon dioxide foaming.
  • the hair is immersed preferably within 3 minutes, more preferably within 1 minute, and further preferably within 0.5 minutes.
  • the method of the present invention may have step (I) or step (II) from the viewpoint of immersing the hair in the hair washing solution during carbonic acid effervescence to enhance the hair washing effect, and has step (II). Is more preferable.
  • the bath ratio (hair / hair cleaning solution or water) between the hair and the hair cleaning solution or water for immersing the hair is determined from the viewpoint of improving the cleaning property and the reattachment suppressing effect, and From the viewpoint of omitting rinsing after washing the hair, the mass ratio is preferably 0.1 / 99.9 to 50/50, more preferably 0.5 / 99.5 to 30/70. Further, in the steps (I) and (II), the bath ratio (solid hair cleansing agent / water) of the solid hair cleansing agent and the water to which the solid hair cleansing agent is added improves the cleansing property and the effect of suppressing reattachment.
  • the mass ratio is preferably 0.01 / 99.99 to 20/80, more preferably 0.1 / 99.9 to 15/85, and further. It is preferably 0.2 / 99.8 to 10/90.
  • the pH of the water to which the hair cleansing agent is added (that is, the hair cleansing liquid) has a viewpoint of improving the cleansing property and the effect of suppressing reattachment, and a viewpoint of omitting rinsing after washing the hair. Therefore, it is preferably 6.0 or less, more preferably 5.8 or less, still more preferably 5.5 or less, and preferably 4.0 or more, more preferably 4.5 or more.
  • the pH of the water to which the hair cleansing agent is added is preferably 4.0 or more and 6.0 or less, more preferably 4.0 or more and 5.8.
  • the pH can be measured by the same method as described above.
  • the temperature of the hair cleaning solution or water for immersing the hair is usually in the range of 30 to 45 ° C, preferably 35 to 42 ° C.
  • the time for immersing the hair in the hair cleaning solution is not particularly limited, but is preferably 1 to 30 minutes, more preferably 1 to 20 minutes, still more preferably 5 to 20 minutes from the viewpoint of improving the cleaning property and reducing the burden on the hair washing behavior. be.
  • the starting point of the "time for immersing the hair in the hair cleaning liquid" is the time when the solid hair cleaning agent is added to the water in which the hair is immersed.
  • a step of rinsing the hair can be performed after the hair is pulled out from the hair cleaning solution and before the hair is dried.
  • the step of rinsing the hair can be omitted. As a result, the burden of hair washing behavior can be reduced. Hair can be dried by a conventional method using a towel, a water absorbing material, a dryer, or a combination thereof.
  • the present invention further Ingredient (A): organic acid, Ingredient (B): carbonate and Ingredient (C): Nonionic surfactant, Contains, The mass ratio [ ⁇ (A) + (B) ⁇ / (C)] of the total amount of the component (A) and the component (B) to the component (C) is 4.0 or more and 24.0 or less. , Offering use as a hair cleanser.
  • the components (A) to (C), the solid preparation, the method of use thereof (the method of washing hair using the solid preparation), and the preferred embodiments thereof are the same as those of the solid hair washing agent.
  • the component (A) is selected from one or more selected from the group consisting of a carboxylic acid-based compound, an organic sulfonic acid-based compound, an organic phosphoric acid-based compound, and ascorbic acid, preferably selected from the group consisting of a carboxylic acid-based compound and ascorbic acid.
  • One or more, more preferably one or more selected from the group consisting of succinic acid, tartaric acid, malic acid, citric acid, and ascorbic acid still more preferably one selected from the group consisting of succinic acid, malic acid, and citric acid 1.
  • the solid hair cleaning agent according to ⁇ 1> which is more than a seed, more preferably succinic acid.
  • the component (B) is at least one selected from the group consisting of alkali metal carbonate, alkaline earth metal carbonate, alkali metal bicarbonate, and alkaline earth metal bicarbonate, and preferably contains bicarbonate.
  • the bicarbonate is at least one selected from the group consisting of sodium hydrogen carbonate and calcium hydrogen carbonate, preferably containing sodium hydrogen carbonate, and more preferably sodium hydrogen carbonate. Agent.
  • the content of bicarbonate in the component (B) is preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, still more preferably 80% by mass or more, still more preferably.
  • the HLB value of the component (C) is preferably 10.0 or more and 20.0 or less, more preferably 10.5 or more and 18.5 or less, still more preferably 12.0 or more and 18.0 or less, still more preferably 14.
  • the solid hair cleansing agent according to any one of ⁇ 1> to ⁇ 5>, which is 0 or more and 17.0 or less, more preferably 14.0 or more and 16.5 or less.
  • Component (C) is polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene fatty acid ester, alkyl glucoside, alkyl alkanolamide, alkyl glyceryl ether, higher fatty acid.
  • sucrose ester, polyglycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, and alkyl saccharides preferably polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, One or more selected from the group consisting of polyoxyethylene fatty acid ester, alkyl glyceryl ether, and polyoxyethylene cured castor oil, more preferably polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, and One or more selected from the group consisting of polyoxyethylene cured castor oil, more preferably one or more selected from the group consisting of polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene cured castor oil.
  • the solid hair cleaning agent according to any one of ⁇ 1> to ⁇ 6>.
  • ⁇ 8> The average number of moles of oxyethylene groups added in polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene fatty acid ester, and polyoxyethylene hydrogenated castor oil is The solid according to ⁇ 7>, preferably 2 or more and 150 or less, more preferably 3 or more and 80 or less, still more preferably 5 or more and 60 or less, still more preferably 6 or more and 40 or less, still more preferably 8 or more and 40 or less. Hair cleaning agent.
  • the fatty acids in the oxyethylene fatty acid ester, the higher fatty acid sucrose ester, and the polyglycerin fatty acid ester are preferably 8 or more and 22 or less carbon atoms, more preferably 10 or more and 22 or less carbon atoms, and further preferably 12 or more and 20 or less carbon atoms.
  • the solid hair cleaning agent described in. ⁇ 11> The content of the component (A) in the solid hair cleaning agent is preferably 15.0% by mass or more and 45.0% by mass or less, more preferably 20.0% by mass or more and 45.0% by mass or less, still more preferably 25.
  • the content of the component (B) in the solid hair cleaning agent is preferably 15.0% by mass or more and 60.0% by mass or less, more preferably 20.0% by mass or more and 60.0% by mass or less, still more preferably 30.
  • the content of the component (C) in the solid hair cleaning agent is preferably 1.5% by mass or more and 20.0% by mass or less, more preferably 3.0% by mass or more and 20.0% by mass or less, still more preferably 5.
  • the solid hair cleaning agent according to any one of ⁇ 1> to ⁇ 12> which is 0.0% by mass or more and 20.0% by mass or less, more preferably 8.0% by mass or more and 18.0% by mass or less.
  • the mass ratio [ ⁇ (A) + (B) ⁇ / (C)] of the total amount of the component (A) and the component (B) to the component (C) is preferably 4.0 or more and 20.0 or less.
  • the mass ratio [(A) / (B)] of the component (A) to the component (B) is preferably 0.20 or more and 1.50 or less, more preferably 0.40 or more and 1.20 or less, and further preferably 0.
  • the solid hair cleansing agent according to any one of ⁇ 1> to ⁇ 14>, which is .60 or more and 1.00 or less, more preferably 0.60 or more and 0.80 or less.
  • the total amount of the component (A) and the component (B) in the solid hair cleaning agent is preferably 30.0% by mass or more and 98.5% by mass or less, more preferably 40.0% by mass or more and 98.5% by mass or less.
  • the solid hair cleaning agent according to any one of ⁇ 1> to ⁇ 15>. ⁇ 17>
  • the total amount of the components (A) to (C) in the solid hair cleansing agent is preferably 40% by mass or more, more preferably 60% by mass or more, still more preferably 80% by mass or more, still more preferably 90% by mass or more.
  • the solid hair cleansing agent according to any one of ⁇ 1> to ⁇ 17>, wherein the dosage form when the solid hair cleansing agent is used is preferably powder or tablet, more preferably tablet, and further preferably tablet.
  • the pH of a 1% by mass aqueous solution of a solid hair cleanser at 25 ° C. is preferably 4.0 or more and 6.0 or less, more preferably 4.0 or more and 5.8 or less, and further preferably 4.0 or more and 5.5 or less.
  • a hair washing method comprising the following step (I) or step (II), preferably step (II).
  • the bath ratio (hair / hair cleaning solution or water) of the hair to the hair cleaning solution or water for immersing the hair is preferably 0.1 / 99.9 or more in terms of mass ratio.
  • the pH of the water (hair washing liquid) to which the hair washing agent is added is preferably 4.0 or more and 6.0 or less, more preferably 4.0 or more and 5.8 or less, and further.
  • the time for immersing the hair in water (hair cleaning solution) to which a hair cleaning agent is added is preferably 1 to 30 minutes, more preferably 1 to 20 minutes, still more preferably 5 to 20 minutes, ⁇ 20> to ⁇ 23.
  • the hair is pulled up from the water (hair washing liquid) to which the hair washing agent is added, and then the hair is dried, ⁇ 20> to ⁇ 24>.
  • ⁇ 26> The method according to any one of ⁇ 20> to ⁇ 25>, wherein the step of rinsing the hair is performed after the hair is pulled up from water (hair cleaning liquid) to which a hair cleaning agent is added and before the hair is dried. .. ⁇ 27> 4.
  • Examples 1 to 8 and Comparative Examples 1 to 6 (preparation and evaluation of solid hair cleanser)
  • Comparative Examples 2 and 4 to 6 each component was blended and mixed according to the blending composition shown in Tables 2 to 3, and then a press tableting machine was used using the obtained powder.
  • a tablet (tablet) type solid hair cleanser was prepared by tableting with a mass of 8.00 to 12.00 g and a tablet height of 15.1 to 15.3 mm and a tableting pressure of 5 MPa. Using the obtained solid hair cleanser, evaluation was performed by the method shown below. In Comparative Example 1, deionized water was used for evaluation.
  • each evaluation was performed using an aqueous solution in which the component (C) was dissolved in deionized water at the ratio shown in Table 2.
  • the blending amount (% by mass) of each component shown in the table is the amount of the active ingredient.
  • the solid hair cleansing agent of this example has high sebum cleansing properties. Further, since no precipitate is observed in the cleaning liquid after sebum cleaning, it is considered that there is little possibility that the solid hair cleaning agent remains undissolved and sebum and the like reattach to the hair.
  • the solid hair cleansing agent of the present invention it is possible to wash the hair simply by immersing the hair, the cleansing property is high, and the undissolved residue of the hair cleansing agent and the reattachment of sebum and the like to the hair can be suppressed.
  • the operation of lathering the washing agent on the hair and washing after washing the hair can be omitted, so that the burden of the hair washing action in the medical field and the nursing field can be reduced. It is also possible to suppress a decrease in the frequency of hair washing.

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Abstract

A solid shampoo containing component (A): an organic acid, component (B): a carbonate, and component (C): a nonionic surfactant, in which the mass ratio [{(A)+(B)}/(C)] of the total amount of component (A) and component (B) to component (C) is from 4.0 to 24.0.

Description

固形毛髪洗浄剤Solid hair cleanser
 本発明は、固形毛髪洗浄剤に関する。 The present invention relates to a solid hair cleanser.
 近年の生活環境、ならびに社会情勢の変化に伴い、従来の洗髪方法では十分に対応できないという課題が生じている。例えば、少子高齢化においては、医療現場、介護現場での働き手不足という問題が生じる。そのため、患者、被介護者に対して十分な洗髪時間をかけられず、洗い残しやすすぎ残しなどを生じるおそれがある。
 患者、被介護者に対する洗髪行動の一例として、まず少量の水で毛髪及び頭皮を濡らし、余剰の水をオムツなどの吸水材で吸水した後に、濡らした毛髪上で毛髪洗浄剤を泡立てて毛髪を洗浄する工程(洗浄工程)、及び、少量の水で毛髪をすすぎ流し、すすぎ水を吸水材で吸収して回収する工程(すすぎ工程)を順に行い、さらに洗浄後の毛髪を乾燥させる工程(乾燥工程)が行われる。しかしながら該洗髪工程は煩雑であり、特に毛髪洗浄剤を用いての洗髪が作業上の大きな負担となっている。洗髪工程が煩雑であると、人手の少ない医療現場、介護現場では、被介護者の洗髪頻度の低下にもつながる。
With the recent changes in the living environment and social conditions, there is a problem that conventional hair washing methods cannot sufficiently cope with it. For example, with the declining birthrate and aging population, there is a problem of shortage of workers at medical and long-term care sites. Therefore, it is not possible to spend a sufficient amount of time for washing the hair of the patient and the care recipient, and there is a possibility that the patient or the care recipient may be left unwashed or left unwashed.
As an example of hair washing behavior for patients and care recipients, first wet the hair and scalp with a small amount of water, absorb excess water with a water-absorbing material such as omelet, and then lather the hair-cleaning agent on the wet hair to clean the hair. A step of washing (washing step) and a step of rinsing the hair with a small amount of water, absorbing the rinsed water with a water-absorbing material and collecting it (rinsing step) are performed in order, and further, a step of drying the washed hair (drying). Step) is performed. However, the hair washing process is complicated, and in particular, washing the hair with a hair washing agent is a heavy burden on the work. If the hair washing process is complicated, it also leads to a decrease in the frequency of hair washing of the care recipient in the medical field and the long-term care field where there are few manpower.
 そこで、医療現場、介護現場での洗髪行動の負担を軽減し得る洗髪提案が検討されている。例えば毛髪洗浄液に毛髪を浸漬することで毛髪の洗浄が可能であり、浸漬後に毛髪洗浄液から毛髪を引き上げてそのまま乾燥工程に供することができる洗髪行動であれば、毛髪洗浄剤の泡立て及びすすぎ工程が不要になり、且つ、毛髪洗浄剤のすすぎ残しが生じるおそれもなくなる。 Therefore, hair washing proposals that can reduce the burden of hair washing behavior at medical and nursing care sites are being considered. For example, in the case of a hair washing action in which the hair can be washed by immersing the hair in a hair washing liquid, and the hair can be pulled up from the hair washing liquid and used as it is in the drying process after soaking, the whipping and rinsing steps of the hair washing agent can be performed. It becomes unnecessary, and there is no possibility that the hair cleaning agent is left unrinsed.
 また、ファッションアイテムとしてウイッグやブレイズなど付け毛の装着も増えつつある。この場合、付け毛が外れないように、また型崩れせずに洗髪することが必須であるため、基本的には付け毛を装着してからほとんど洗髪を行うことができず、その結果、臭い、痒みなどのトラブルにつながる。上記洗髪行動によれば、このようなトラブルを解消することも期待される。 In addition, the number of fashion items such as wigs and blaze is increasing. In this case, it is essential to wash the hair so that it does not come off and it does not lose its shape, so basically it is almost impossible to wash the hair after wearing the hair, and as a result, it smells. , Leads to troubles such as itching. According to the above-mentioned hair washing behavior, it is expected that such troubles will be solved.
 上記洗髪行動を実現するためには、毛髪を浸漬することにより洗髪が可能であり、毛髪上で泡立てて使用するという洗髪操作が不要であって、且つ毛髪上で泡立てて使用するタイプの毛髪洗浄剤と同程度の洗浄力を有する毛髪洗浄剤が必要となる。 In order to realize the above-mentioned hair washing behavior, it is possible to wash the hair by immersing the hair, it is not necessary to perform a hair washing operation of foaming and using it on the hair, and it is a type of hair washing that is used by foaming on the hair. A hair-cleaning agent having the same detergency as the agent is required.
 このような毛髪洗浄剤として、水に溶解させて用いる固形毛髪洗浄剤が提案されている。例えば特許文献1(特開2018-27969号公報)には、重炭酸塩、所定の有機酸、無水炭酸ナトリウム及び/又は無水炭酸カリウムを含有する固形浴剤において、固形浴剤を溶解した直後の水溶液のpHが5.5から9.0であり、該固形浴剤を溶解させた水を毛髪に接触させて洗浄し、水中の重炭酸イオンが重炭酸イオン封鎖物質により封鎖されるのを抑制し、手ですいたときの抜けの良さ、乾燥後の髪の厚み・ボリューム感及びコシの強さを得ることを特徴とする毛髪の洗浄方法が開示されている。
 特許文献2(特表2020-506222号公報)には、所定量の洗浄性界面活性剤と水溶性ポリマー構造剤とから形成される繊維、及び、それぞれ所定量の固体金属塩と、固体酸と、結合剤と、を含む予備形成された発泡性凝集粒子、を含み、繊維と発泡性凝集粒子との比が約1:0.05~約1:2である、ヘアシャンプー等の溶解性固形構造体が、所望のコスト及び速度パラメータ内で製造することができ、更に、固体製品の溶解特性を改善できること、水と混合すると発泡による興味深い使用体験を提供できることが開示されている。
As such a hair cleansing agent, a solid hair cleansing agent that is used by dissolving it in water has been proposed. For example, Patent Document 1 (Japanese Unexamined Patent Publication No. 2018-27969) describes a solid bathing agent containing a bicarbonate, a predetermined organic acid, anhydrous sodium carbonate and / or anhydrous potassium carbonate, immediately after dissolving the solid bathing agent. The pH of the aqueous solution is 5.5 to 9.0, and the water in which the solid bath agent is dissolved is brought into contact with the hair for washing, and the bicarbonate ion in the water is suppressed from being blocked by the bicarbonate ion blocking substance. However, a method for cleaning hair is disclosed, which is characterized by good removal when squeezed by hand, thickness / volume of hair after drying, and strength of elasticity.
In Patent Document 2 (Japanese Patent Laid-Open No. 2020-506222), a fiber formed from a predetermined amount of a detergency surfactant and a water-soluble polymer structural agent, a predetermined amount of a solid metal salt, and a solid acid are described. , A soluble solid such as a hair shampoo, comprising preformed effervescent agglomerated particles containing, and a ratio of fibers to effervescent agglomerated particles of from about 1: 0.05 to about 1: 2. It is disclosed that the structure can be manufactured within the desired cost and rate parameters, can improve the dissolution properties of solid products, and can provide an interesting experience of foaming when mixed with water.
 本発明は、下記に関する。
[1]成分(A):有機酸、成分(B):炭酸塩、及び、成分(C):ノニオン性界面活性剤、を含有し、成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]が4.0以上24.0以下である、固形毛髪洗浄剤。
[2]下記工程(I)又は工程(II)を有する、毛髪の洗浄方法。
工程(I):上記[1]に記載の固形毛髪洗浄剤を水に添加し、炭酸ガス発泡中に該水に毛髪を浸漬させる工程
工程(II):水に毛髪を浸漬させ、次いで、該水に上記[1]に記載の固形毛髪洗浄剤を添加する工程
The present invention relates to the following.
[1] A component (A) and a component (B) containing an organic acid, a component (B): a carbonate, and a component (C): a nonionic surfactant, with respect to the component (C). ), The mass ratio [{(A) + (B)} / (C)] is 4.0 or more and 24.0 or less.
[2] A method for cleaning hair, which comprises the following step (I) or step (II).
Step (I): The solid hair cleansing agent according to the above [1] is added to water, and the hair is immersed in the water during carbon dioxide gas foaming. Step (II): The hair is immersed in water, and then the Step of adding the solid hair cleansing agent according to the above [1] to water
発明の詳細な説明Detailed description of the invention
[固形毛髪洗浄剤]
 本発明の固形毛髪洗浄剤は、成分(A):有機酸、成分(B):炭酸塩、及び、成分(C):ノニオン性界面活性剤、を含有し、成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]が4.0以上24.0以下である。
 本発明の固形毛髪洗浄剤は、25℃において固体であって、水に溶解させて用いる毛髪洗浄剤であり、その剤型としては好ましくは粉末又は錠剤、より好ましくは錠剤である。
 本発明の固形毛髪洗浄剤は上記構成とすることにより、毛髪上で洗浄剤を泡立てて洗浄する操作を行うことなく、固形毛髪洗浄剤を添加した炭酸ガス発泡中の水に毛髪を浸漬させるか、又は水に毛髪を浸漬させ、次いで該水に固形毛髪洗浄剤を添加するだけで洗髪を行うことが可能で、洗浄性が高く、毛髪洗浄剤の溶け残り及び皮脂等の再付着も防止できる毛髪洗浄剤となる。
 以下、本明細書において、洗髪に用いる、本発明の固形毛髪洗浄剤を添加した後の水を「毛髪洗浄液」ともいう。また、「毛髪洗浄剤の溶け残り及び皮脂等の再付着」を単に「再付着」ともいう。
[Solid hair cleanser]
The solid hair cleanser of the present invention contains a component (A): an organic acid, a component (B): a carbonate, and a component (C): a nonionic surfactant, and is a component (a component) with respect to the component (C). The mass ratio [{(A) + (B)} / (C)] of the total amount of A) and the component (B) is 4.0 or more and 24.0 or less.
The solid hair detergent of the present invention is a hair detergent that is solid at 25 ° C. and is used by dissolving it in water, and its dosage form is preferably powder or tablet, and more preferably tablet.
By adopting the above-mentioned structure, the solid hair cleaning agent of the present invention can be used to immerse the hair in water during carbon dioxide foaming to which the solid hair cleaning agent is added, without performing an operation of foaming and cleaning the cleaning agent on the hair. Or, it is possible to wash the hair simply by immersing the hair in water and then adding a solid hair cleansing agent to the water, and it has high detergency and can prevent undissolved residue of the hair cleansing agent and reattachment of sebum and the like. It becomes a hair cleanser.
Hereinafter, in the present specification, the water after adding the solid hair cleansing agent of the present invention used for hair washing is also referred to as "hair cleansing liquid". Further, "reattachment of undissolved hair cleaning agent and sebum" is also simply referred to as "reattachment".
 特許文献1の開示技術は、毛髪を浸漬させて洗浄するための毛髪洗浄剤として用いるには、洗浄性に改善の余地があった。特に皮脂等の汚れについては、毛髪に対する再付着性を防止することも重要である。さらに固形毛髪洗浄剤は、水への溶け残りがあるとこれが毛髪に再付着して洗髪後の毛髪の感触が悪化する懸念もある。
 また、特許文献2の開示技術では、溶解性固形構造体において洗浄性界面活性剤を多量に使用していることから、毛髪洗浄剤として用いた場合、洗髪行動として泡立て及びすすぎ工程が必要であると推察される。
The disclosed technique of Patent Document 1 has room for improvement in detergency when used as a hair cleaning agent for immersing and cleaning hair. Especially for stains such as sebum, it is important to prevent reattachment to hair. Further, if there is a residue of the solid hair detergent that remains undissolved in water, it may reattach to the hair and the feel of the hair after washing may be deteriorated.
Further, in the technique disclosed in Patent Document 2, since a large amount of detergency surfactant is used in the soluble solid structure, when it is used as a hair cleansing agent, a whipping and rinsing step is required as a hair washing action. It is inferred that.
 本発明は水に溶解させて用いる固形毛髪洗浄剤であって、毛髪を浸漬させるだけで洗髪を行うことが可能で、洗浄性が高く、毛髪洗浄剤の溶け残り及び皮脂等の毛髪への再付着も抑制できる固形毛髪洗浄剤に関する。 The present invention is a solid hair cleansing agent used by dissolving it in water, and it is possible to wash the hair simply by immersing the hair, and the hair cleansing property is high. The present invention relates to a solid hair cleanser that can also suppress adhesion.
 本発明者が検討を行った結果、有機酸及び炭酸塩を含有し、水に溶解させると炭酸ガスを発生し得る固形毛髪洗浄剤であって、更にノニオン性界面活性剤を含有し、該ノニオン性界面活性剤に対する有機酸及び炭酸塩の合計量の質量比が所定の範囲にある固形毛髪洗浄剤が、上記課題を解決できることを見出した。
 本発明の固形毛髪洗浄剤によれば、毛髪を浸漬させるだけで洗髪を行うことが可能になり、洗浄性が高く、毛髪洗浄剤の溶け残り及び皮脂等の毛髪への再付着も抑制できる。該固形毛髪洗浄剤を用いた洗髪行動では、毛髪上で洗浄剤を泡立てて洗浄する操作や、洗髪後のすすぎ流し等を省略できるため、医療現場、介護現場での洗髪行動の負担を軽減し、洗髪頻度の低下を抑制することも可能になる。
As a result of the study by the present inventor, it is a solid hair cleaning agent containing an organic acid and a carbonate and capable of generating carbonic acid gas when dissolved in water, and further containing a nonionic surfactant, and the nonion. It has been found that a solid hair cleaning agent in which the mass ratio of the total amount of organic acid and carbonate to the sex surfactant is in a predetermined range can solve the above-mentioned problems.
According to the solid hair cleansing agent of the present invention, it is possible to wash the hair simply by immersing the hair, the cleansing property is high, and the undissolved residue of the hair cleansing agent and the reattachment of sebum and the like to the hair can be suppressed. In the hair washing action using the solid hair washing agent, the operation of lathering the washing agent on the hair and washing after washing the hair can be omitted, so that the burden of the hair washing action in the medical field and the nursing field can be reduced. It is also possible to suppress a decrease in the frequency of hair washing.
 本発明の固形毛髪洗浄剤が上記効果を奏する理由については定かではないが、次のように考えられる。
 本発明の固形毛髪洗浄剤は、成分(A)である有機酸と、成分(B)である炭酸塩とを含むことにより、水に溶解させた際に炭酸ガスを発生する。これにより、(1)炭酸ガスの泡が皮脂に吸着し、気液界面へ上昇する浮力により物理的に汚れを除去する効果と、(2)疎水性を有する炭酸ガスの泡表面が皮脂等の汚れを吸着して除去する効果とを奏する。これにより、固形毛髪洗浄剤を添加した炭酸ガス発泡中の水に毛髪を浸漬させるか、又は、水に毛髪を浸漬させ、次いで該水に固形毛髪洗浄剤を添加する操作を行うだけで優れた洗浄性を発現すると考えられる。
 成分(C)であるノニオン性界面活性剤も皮脂洗浄性を有し、更に再付着を抑制できる効果を奏する。そして、成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]を所定の範囲とすることで、水に溶解させた際に、皮脂洗浄性と再付着抑制効果が共に優れる固形毛髪洗浄剤とすることができると考えられる。
The reason why the solid hair cleansing agent of the present invention exerts the above effect is not clear, but it is considered as follows.
The solid hair cleaning agent of the present invention contains an organic acid as a component (A) and a carbonate as a component (B) to generate carbon dioxide gas when dissolved in water. As a result, (1) carbon dioxide bubbles are adsorbed on the sebum and the buoyancy rising to the gas-liquid interface physically removes dirt, and (2) the hydrophobic carbon dioxide foam surface is such as sebum. It has the effect of adsorbing and removing dirt. This is excellent only by immersing the hair in water during carbon dioxide foaming to which a solid hair cleansing agent has been added, or by immersing the hair in water and then adding the solid hair cleansing agent to the water. It is considered to exhibit detergency.
The nonionic surfactant which is the component (C) also has sebum detergency and has an effect of suppressing reattachment. Then, by setting the mass ratio [{(A) + (B)} / (C)] of the total amount of the component (A) and the component (B) to the component (C) within a predetermined range, it is dissolved in water. It is considered that a solid hair cleansing agent having excellent sebum cleansing property and reattachment suppressing effect can be obtained.
<成分(A):有機酸>
 本発明の固形毛髪洗浄剤は、成分(A)として有機酸を含有する。本発明の固形毛髪洗浄剤は成分(A)を含有することで、水に溶解させた際に、後述する成分(B)との作用により炭酸ガスを発生し得る固形毛髪洗浄剤となる。この炭酸発泡により、毛髪を浸漬させるだけで洗髪が可能になり、且つ、優れた洗浄性を発現する。
<Component (A): Organic acid>
The solid hair cleansing agent of the present invention contains an organic acid as a component (A). By containing the component (A), the solid hair cleansing agent of the present invention is a solid hair cleansing agent that can generate carbon dioxide gas by the action with the component (B) described later when dissolved in water. This carbonic acid effervescence makes it possible to wash the hair simply by immersing the hair, and exhibits excellent detergency.
 成分(A)としては、カルボン酸系化合物、有機スルホン酸系化合物、有機リン酸系化合物、及びアスコルビン酸等が挙げられるが、炭酸発泡性、水への溶解性及び成形性の観点からはカルボン酸系化合物及びアスコルビン酸からなる群から選ばれる1種以上が好ましい。当該カルボン酸系化合物は少なくとも1個のカルボキシ基を有する化合物であればよいが、炭酸発泡性を向上させる観点からは2個以上のカルボキシ基を有する多価カルボン酸が好ましい。またカルボン酸系化合物は、脂肪族カルボン酸、芳香族カルボン酸が挙げられ、洗浄性、水への溶解性、及び固形毛髪洗浄剤の成形性を向上させる観点、並びに経済性の観点から、脂肪族カルボン酸が好ましい。
 脂肪族カルボン酸としては、シュウ酸、フマル酸、コハク酸、酒石酸、リンゴ酸、クエン酸、マレイン酸、グルタル酸、アジピン酸等が挙げられ、芳香族カルボン酸としては、安息香酸、サリチル酸、ピロリドンカルボン酸等が挙げられる。これらの有機酸は、1種又は2種以上を用いることができる。
 上記の中でも、成分(A)としてはコハク酸、酒石酸、リンゴ酸、クエン酸、及びアスコルビン酸からなる群から選ばれる1種以上が好ましく、コハク酸、リンゴ酸、及びクエン酸からなる群から選ばれる1種以上が好ましく、コハク酸が更に好ましい。
Examples of the component (A) include a carboxylic acid-based compound, an organic sulfonic acid-based compound, an organic phosphoric acid-based compound, and ascorbic acid. One or more selected from the group consisting of acid compounds and ascorbic acid is preferable. The carboxylic acid-based compound may be a compound having at least one carboxy group, but a polyvalent carboxylic acid having two or more carboxy groups is preferable from the viewpoint of improving carbonic acid effervescence. Examples of the carboxylic acid compound include aliphatic carboxylic acids and aromatic carboxylic acids, which are fats from the viewpoint of improving the detergency, solubility in water, and the moldability of the solid hair cleaning agent, and from the viewpoint of economic efficiency. Group carboxylic acids are preferred.
Examples of the aliphatic carboxylic acid include oxalic acid, fumaric acid, succinic acid, tartrate acid, malic acid, citric acid, maleic acid, glutaric acid, adipic acid and the like, and examples of the aromatic carboxylic acid include benzoic acid, salicylic acid and pyrrolidone. Carboxylic acid and the like can be mentioned. As these organic acids, one kind or two or more kinds can be used.
Among the above, as the component (A), one or more selected from the group consisting of succinic acid, tartaric acid, malic acid, citric acid, and ascorbic acid is preferable, and the component (A) is selected from the group consisting of succinic acid, malic acid, and citric acid. One or more of them is preferable, and succinic acid is more preferable.
<成分(B):炭酸塩>
 本発明の固形毛髪洗浄剤は、成分(B)として炭酸塩を含有する。成分(B)は、固形毛髪洗浄剤を水に溶解させた際に、成分(A)との作用により炭酸ガスを発生し、これにより優れた洗浄性を発現することができる。
<Ingredient (B): Carbonate>
The solid hair cleanser of the present invention contains a carbonate as a component (B). When the solid hair cleansing agent is dissolved in water, the component (B) generates carbon dioxide gas by the action with the component (A), whereby excellent cleansing property can be exhibited.
 成分(B)としては、炭酸ナトリウム、炭酸カリウム等のアルカリ金属炭酸塩;炭酸カルシウム、炭酸マグネシウム等のアルカリ土類金属炭酸塩;炭酸水素ナトリウム、炭酸水素カリウム等のアルカリ金属重炭酸塩;炭酸水素カルシウム等のアルカリ土類金属重炭酸塩;等が挙げられ、これらのうち1種又は2種以上用いることができる。
 上記の中でも、洗浄性向上の観点から、成分(B)は重炭酸塩を含むことが好ましい。該重炭酸塩としては炭酸水素ナトリウム及び炭酸水素カルシウムからなる群から選ばれる1種以上が好ましく、炭酸水素ナトリウムを含むことがより好ましく、炭酸水素ナトリウムであることが更に好ましい。
 成分(B)中の重炭酸塩の含有量は、洗浄性向上の観点から、好ましくは50質量%以上、より好ましくは60質量%以上、更に好ましくは70質量%以上、より更に好ましくは80質量%以上、より更に好ましくは90質量%以上であり、100質量%であってよい。
The component (B) includes alkali metal carbonates such as sodium carbonate and potassium carbonate; alkaline earth metal carbonates such as calcium carbonate and magnesium carbonate; alkali metal bicarbonates such as sodium hydrogen carbonate and potassium hydrogen carbonate; hydrogen carbonate. Alkaline earth metal bicarbonates such as calcium; and the like; one or more of these can be used.
Among the above, from the viewpoint of improving detergency, the component (B) preferably contains a bicarbonate. The bicarbonate is preferably one or more selected from the group consisting of sodium hydrogen carbonate and calcium hydrogen carbonate, more preferably containing sodium hydrogen carbonate, and even more preferably sodium hydrogen carbonate.
The content of bicarbonate in the component (B) is preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, still more preferably 80% by mass, from the viewpoint of improving detergency. % Or more, more preferably 90% by mass or more, and may be 100% by mass.
<成分(C):ノニオン性界面活性剤>
 本発明の固形毛髪洗浄剤は、成分(C)としてノニオン性界面活性剤を含有する。成分(C)は洗浄性を向上させるとともに、毛髪洗浄剤の溶け残り及び皮脂等の再付着抑制効果に寄与する。
<Component (C): Nonionic surfactant>
The solid hair cleansing agent of the present invention contains a nonionic surfactant as a component (C). The component (C) improves the detergency and contributes to the effect of suppressing the reattachment of undissolved hair cleaning agent and sebum and the like.
 成分(C)は、洗浄性及び再付着抑制効果の向上の観点から、HLB(親水性-親油性のバランス;Hydrophilic-Lypophilic Balance)値は、好ましくは10.0以上、より好ましくは10.5以上、更に好ましくは12.0以上、より更に好ましくは14.0以上であり、好ましくは20.0以下、より好ましくは18.5以下、更に好ましくは18.0以下、より更に好ましくは17.0以下、より更に好ましくは16.5以下である。そして、成分(C)のHLB値は、好ましくは10.0以上20.0以下、より好ましくは10.5以上18.5以下、更に好ましくは12.0以上18.0以下、より更に好ましくは14.0以上17.0以下、より更に好ましくは14.0以上16.5以下である。
 上記HLB値は、界面活性剤の水及び油への親和性を示す値であり、グリフィン法により次式から求めることができる。
  HLB=20×[(界面活性剤中に含まれる親水性基の分子量)/(界面活性剤の分子量)]
 上記「親水性基」としては、例えば、ヒドロキシ基及びエチレンオキシ基が挙げられる。
 なお、成分(C)を2種以上用いる場合は、HLB値が上記範囲にある成分を2種以上用いることが好ましい。
The HLB (hydrophilic-lipophilic balance) value of the component (C) is preferably 10.0 or more, more preferably 10.5, from the viewpoint of improving the detergency and the effect of suppressing reattachment. Above, more preferably 12.0 or more, still more preferably 14.0 or more, preferably 20.0 or less, more preferably 18.5 or less, still more preferably 18.0 or less, still more preferably 17. It is 0 or less, more preferably 16.5 or less. The HLB value of the component (C) is preferably 10.0 or more and 20.0 or less, more preferably 10.5 or more and 18.5 or less, still more preferably 12.0 or more and 18.0 or less, still more preferably. It is 14.0 or more and 17.0 or less, more preferably 14.0 or more and 16.5 or less.
The HLB value is a value indicating the affinity of the surfactant for water and oil, and can be obtained from the following formula by the Griffin method.
HLB = 20 × [(Molecular weight of hydrophilic group contained in surfactant) / (Molecular weight of surfactant)]
Examples of the above-mentioned "hydrophilic group" include a hydroxy group and an ethyleneoxy group.
When two or more kinds of the component (C) are used, it is preferable to use two or more kinds of components having an HLB value in the above range.
 成分(C)の具体例としては、例えば、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルケニルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、ポリオキシエチレンソルビット脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、アルキルグルコシド、アルキルアルカノールアミド、アルキルグリセリルエーテル、高級脂肪酸ショ糖エステル、ポリグリセリン脂肪酸エステル、ポリオキシエチレン硬化ヒマシ油、及びアルキルサッカライドからなる群から選ばれる1種以上が挙げられる。
 上記において例示したノニオン性界面活性剤のうち、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルケニルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、ポリオキシエチレンソルビット脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、及びポリオキシエチレン硬化ヒマシ油におけるオキシエチレン基の平均付加モル数(以下、「EO平均付加モル数」という)は、洗浄性及び再付着抑制効果の向上の観点から、好ましくは2以上、より好ましくは3以上、更に好ましくは5以上、より更に好ましくは6以上、より更に好ましくは8以上であり、また、好ましくは150以下、より好ましくは80以下、更に好ましくは60以下、より更に好ましくは40以下である。そして、上記EO平均付加モル数は、好ましくは2以上150以下、より好ましくは3以上80以下、更に好ましくは5以上60以下、より更に好ましくは6以上40以下、より更に好ましくは8以上40以下である。なお、EO平均付加モル数は数平均値である。
Specific examples of the component (C) include polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene fatty acid ester, alkyl glucoside, and alkyl alkanolamide. , Alkyl glyceryl ether, higher fatty acid sucrose ester, polyglycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, and one or more selected from the group consisting of alkyl saccharides.
Among the nonionic surfactants exemplified above, polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene fatty acid ester, and polyoxyethylene hydrogenated castor bean paste. The average number of moles of oxyethylene groups added in the oil (hereinafter referred to as "the average number of moles of EO added") is preferably 2 or more, more preferably 3 or more, still more preferably, from the viewpoint of improving detergency and reattachment suppressing effect. Is 5 or more, more preferably 6 or more, still more preferably 8 or more, and preferably 150 or less, more preferably 80 or less, still more preferably 60 or less, still more preferably 40 or less. The average number of moles of EO added is preferably 2 or more and 150 or less, more preferably 3 or more and 80 or less, still more preferably 5 or more and 60 or less, still more preferably 6 or more and 40 or less, still more preferably 8 or more and 40 or less. Is. The EO average number of moles added is a number average value.
 また、前記ノニオン性界面活性剤のうち、ポリオキシエチレンアルキルエーテル、アルキルグルコシド、アルキルアルカノールアミド、アルキルグリセリルエーテル、及びアルキルサッカライドにおけるアルキル基、ポリオキシエチレンアルケニルエーテルにおけるアルケニル基、並びに、ポリオキシエチレンソルビタン脂肪酸エステル、ポリオキシエチレンソルビット脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、高級脂肪酸ショ糖エステル、及びポリグリセリン脂肪酸エステルにおける脂肪酸は、洗浄性向上及び再付着抑制効果の観点から、好ましくは炭素数8以上22以下、より好ましくは炭素数10以上22以下、更に好ましくは炭素数12以上20以下である。 Among the nonionic surfactants, polyoxyethylene alkyl ethers, alkyl glucosides, alkyl alkanolamides, alkyl glyceryl ethers, and alkyl groups in alkyl saccharides, alkenyl groups in polyoxyethylene alkenyl ethers, and polyoxyethylene sorbitan. Fatty acids in fatty acid esters, polyoxyethylene sorbit fatty acid esters, polyoxyethylene fatty acid esters, higher fatty acid sucrose esters, and polyglycerin fatty acid esters are preferably carbon atoms of 8 or more and 22 from the viewpoint of improving detergency and suppressing reattachment. Hereinafter, the number of carbon atoms is more preferably 10 or more and 22 or less, and further preferably 12 or more and 20 or less.
 上記の中でも、成分(C)としては、洗浄性及び再付着抑制効果の向上の観点から、好ましくはHLB値が前記範囲にある、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルケニルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、アルキルグリセリルエーテル、及びポリオキシエチレン硬化ヒマシ油からなる群から選ばれる1種以上、より好ましくはポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルケニルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、及びポリオキシエチレン硬化ヒマシ油からなる群から選ばれる1種以上、更に好ましくはポリオキシエチレンアルキルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、及びポリオキシエチレン硬化ヒマシ油からなる群から選ばれる1種以上である。 Among the above, the component (C) is preferably a polyoxyethylene alkyl ether, a polyoxyethylene alkenyl ether, or a polyoxyethylene sorbitan having an HLB value in the above range from the viewpoint of improving detergency and reattachment suppressing effect. One or more selected from the group consisting of fatty acid esters, polyoxyethylene fatty acid esters, alkyl glyceryl ethers, and polyoxyethylene cured castor oil, more preferably polyoxyethylene alkyl ethers, polyoxyethylene alkenyl ethers, and polyoxyethylene sorbitan fatty acids. One or more selected from the group consisting of esters and polyoxyethylene cured castor oil, more preferably one selected from the group consisting of polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene cured castor oil. That is all.
 成分(C)として、市販品を用いることもできる。その具体例としては、花王(株)製の「レオドールTW-S320V」(トリステアリン酸ポリオキシエチレンソルビタン(20E.O.)、HLB値10.5)、「エマノーン CH-25」(ポリオキシエチレン水添ヒマシ油(25E.O.)、HLB値10.7)、「エマルゲン108」(ポリオキシエチレン(6)ラウリルエーテル、HLB値12.1)、「エマノーン CH-40」(ポリオキシエチレン水添ヒマシ油(40E.O.)、HLB値12.5)、「エマルゲン306L」(ポリオキシエチレン(6)ステアリルエーテル、HLB値12.8)、「エマルゲン420」(ポリオキシエチレン(13)オレイルエーテル、HLB値13.6)、「エマノーン CH-60K」(ポリオキシエチレン水添ヒマシ油(60E.O.)、HLB値14.0)、「エマルゲン1620G」(ポリオキシエチレン(20)2-ヘキシルデシルエーテル、HLB値14.0)、「エマルゲン116」(ポリオキシエチレン(16)ラウリルエーテル、HLB値14.6)、「レオドール TW-S120V」(モノステアリン酸ポリオキシエチレンソルビタン(20E.O.)、HLB値14.9)、「エマルゲン123P」(ポリオキシエチレン(23)ラウリルエーテル、HLB値16.9)、「エマノーン3199VB」(モノステアリン酸PEG-150、HLB値18.9)、「エマノーン3299VB」(ジステアリン酸PEG-150、HLB値19.4)等が挙げられる。 A commercially available product can also be used as the component (C). Specific examples thereof include "Leodor TW-S320V" (polyoxyethylene sorbitan tristearate (20EO), HLB value 10.5) and "Emanone CH-25" (polyoxyethylene) manufactured by Kao Co., Ltd. Hydrophilic sunflower oil (25EO), HLB value 10.7), "Emulgen 108" (polyoxyethylene (6) lauryl ether, HLB value 12.1), "Emanon CH-40" (polyoxyethylene water) Himashi oil (40EO), HLB value 12.5), "Emulgen 306L" (polyoxyethylene (6) stearyl ether, HLB value 12.8), "Emulgen 420" (polyoxyethylene (13) oleyl) Ether, HLB value 13.6), "Emanon CH-60K" (polyoxyethylene hydrogenated castor oil (60EO), HLB value 14.0), "Emulgen 1620G" (polyoxyethylene (20) 2- Hexyldecyl ether, HLB value 14.0), "Emulgen 116" (polyoxyethylene (16) lauryl ether, HLB value 14.6), "Leodor TW-S120V" (polyoxyethylene sorbitan monostearate (20EO) ), HLB value 14.9), "Emulgen 123P" (polyoxyethylene (23) lauryl ether, HLB value 16.9), "Emanone 3199VB" (monostearate PEG-150, HLB value 18.9), Examples thereof include "Emanon 3299VB" (PEG-150 distearate, HLB value 19.4).
 本発明の固形毛髪洗浄剤中の各成分の含有量は、水に溶解させて用い、毛髪を浸漬させるだけで洗髪を可能にする観点、及び、洗浄性と再付着抑制効果とを向上させる観点から、好ましくは以下の範囲である。 The content of each component in the solid hair cleansing agent of the present invention is used by dissolving it in water, from the viewpoint of enabling hair washing only by immersing the hair, and from the viewpoint of improving the cleansing property and the effect of suppressing reattachment. Therefore, it is preferably in the following range.
 固形毛髪洗浄剤中の成分(A)の含有量は、洗浄性向上の観点から、好ましくは15.0質量%以上、より好ましくは20.0質量%以上、更に好ましくは25.0質量%以上、より更に好ましくは30.0質量%以上である。また、水への溶解性及び固形毛髪洗浄剤の成形性の観点から、好ましくは45.0質量%以下、より好ましくは42.0質量%以下、更に好ましくは40.0質量%以下である。そして、固形毛髪洗浄剤中の成分(A)の含有量は、好ましくは15.0質量%以上45.0質量%以下、より好ましくは20.0質量%以上45.0質量%以下、更に好ましくは25.0質量%以上42.0質量%以下、より更に好ましくは30.0質量%以上40.0質量%以下である。 The content of the component (A) in the solid hair detergent is preferably 15.0% by mass or more, more preferably 20.0% by mass or more, still more preferably 25.0% by mass or more, from the viewpoint of improving detergency. , More preferably 30.0% by mass or more. Further, from the viewpoint of solubility in water and moldability of the solid hair cleansing agent, it is preferably 45.0% by mass or less, more preferably 42.0% by mass or less, still more preferably 40.0% by mass or less. The content of the component (A) in the solid hair cleaning agent is preferably 15.0% by mass or more and 45.0% by mass or less, more preferably 20.0% by mass or more and 45.0% by mass or less, still more preferably. Is 25.0% by mass or more and 42.0% by mass or less, and more preferably 30.0% by mass or more and 40.0% by mass or less.
 固形毛髪洗浄剤中の成分(B)の含有量は、洗浄性向上の観点から、好ましくは15.0質量%以上、より好ましくは20.0質量%以上、更に好ましくは30.0質量%以上、より更に好ましくは40.0質量%以上である。また、水への溶解性及び固形毛髪洗浄剤の成形性の観点から、好ましくは60.0質量%以下、より好ましくは58.0質量%以下、更に好ましくは55.0質量%以下である。そして、固形毛髪洗浄剤中の成分(B)の含有量は、好ましくは15.0質量%以上60.0質量%以下、より好ましくは20.0質量%以上60.0質量%以下、更に好ましくは30.0質量%以上58.0質量%以下、より更に好ましくは40.0質量%以上55.0質量%以下である。 The content of the component (B) in the solid hair detergent is preferably 15.0% by mass or more, more preferably 20.0% by mass or more, still more preferably 30.0% by mass or more, from the viewpoint of improving detergency. , More preferably 40.0% by mass or more. Further, from the viewpoint of solubility in water and moldability of the solid hair cleansing agent, it is preferably 60.0% by mass or less, more preferably 58.0% by mass or less, and further preferably 55.0% by mass or less. The content of the component (B) in the solid hair cleaning agent is preferably 15.0% by mass or more and 60.0% by mass or less, more preferably 20.0% by mass or more and 60.0% by mass or less, still more preferably. Is 30.0% by mass or more and 58.0% by mass or less, and more preferably 40.0% by mass or more and 55.0% by mass or less.
 固形毛髪洗浄剤中の成分(C)の含有量は、洗浄性及び再付着抑制効果の向上の観点から、好ましくは1.5質量%以上、より好ましくは3.0質量%以上、更に好ましくは5.0質量%以上、より更に好ましくは8.0質量%以上であり、再付着抑制効果の観点から、好ましくは20.0質量%以下、より好ましくは18.0質量%以下である。そして、固形毛髪洗浄剤中の成分(C)の含有量は、好ましくは1.5質量%以上20.0質量%以下、より好ましくは3.0質量%以上20.0質量%以下、更に好ましくは5.0質量%以上20.0質量%以下、より更に好ましくは8.0質量%以上18.0質量%以下である。 The content of the component (C) in the solid hair detergent is preferably 1.5% by mass or more, more preferably 3.0% by mass or more, still more preferably 3.0% by mass or more, from the viewpoint of improving the detergency and the effect of suppressing reattachment. It is 5.0% by mass or more, more preferably 8.0% by mass or more, and preferably 20.0% by mass or less, more preferably 18.0% by mass or less from the viewpoint of the effect of suppressing reattachment. The content of the component (C) in the solid hair cleaning agent is preferably 1.5% by mass or more and 20.0% by mass or less, more preferably 3.0% by mass or more and 20.0% by mass or less, still more preferably. Is 5.0% by mass or more and 20.0% by mass or less, more preferably 8.0% by mass or more and 18.0% by mass or less.
 固形毛髪洗浄剤において、成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]は、洗浄性及び再付着抑制効果の向上の観点から、4.0以上、好ましくは4.5以上であり、また、24.0以下、好ましくは20.0以下、より好ましくは15.0以下、更に好ましくは12.0以下である。そして、成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]は、4.0以上24.0以下であり、好ましくは4.0以上20.0以下、より好ましくは4.0以上15.0以下、更に好ましくは4.5以上12.0以下である。 In the solid hair cleansing agent, the mass ratio of the total amount of the component (A) and the component (B) to the component (C) [{(A) + (B)} / (C)] is detergency and suppression of reattachment. From the viewpoint of improving the effect, it is 4.0 or more, preferably 4.5 or more, and 24.0 or less, preferably 20.0 or less, more preferably 15.0 or less, still more preferably 12.0 or less. Is. The mass ratio [{(A) + (B)} / (C)] of the total amount of the component (A) and the component (B) to the component (C) is 4.0 or more and 24.0 or less. It is preferably 4.0 or more and 20.0 or less, more preferably 4.0 or more and 15.0 or less, and further preferably 4.5 or more and 12.0 or less.
 固形毛髪洗浄剤において、成分(B)に対する成分(A)の質量比[(A)/(B)]は、炭酸発泡性及びその持続性の観点、及び、水に溶解させた際のpHを所望の範囲として洗浄性を向上させる観点から、好ましくは0.20以上、より好ましくは0.40以上、更に好ましくは0.60以上である。また、炭酸発泡性及び水への溶解性の観点から、好ましくは1.50以下、より好ましくは1.20以下、更に好ましくは1.00以下、より更に好ましくは0.80以下である。そして、成分(B)に対する成分(A)の質量比[(A)/(B)]は、好ましくは0.20以上1.50以下、より好ましくは0.40以上1.20以下、更に好ましくは0.60以上1.00以下、より更に好ましくは0.60以上0.80以下である。 In the solid hair cleansing agent, the mass ratio of the component (A) to the component (B) [(A) / (B)] determines the carbonic acid effervescence and its sustainability, and the pH when dissolved in water. From the viewpoint of improving detergency as a desired range, it is preferably 0.20 or more, more preferably 0.40 or more, still more preferably 0.60 or more. Further, from the viewpoint of carbonic acid effervescence and solubility in water, it is preferably 1.50 or less, more preferably 1.20 or less, still more preferably 1.00 or less, still more preferably 0.80 or less. The mass ratio [(A) / (B)] of the component (A) to the component (B) is preferably 0.20 or more and 1.50 or less, more preferably 0.40 or more and 1.20 or less, and further preferably. Is 0.60 or more and 1.00 or less, and more preferably 0.60 or more and 0.80 or less.
 固形毛髪洗浄剤中の成分(A)及び成分(B)の合計量は、炭酸発泡性及びその持続性を高めることにより洗浄性を向上させる観点から、好ましくは30.0質量%以上、より好ましくは40.0質量%以上、更に好ましくは60.0質量%以上、より更に好ましくは70.0質量%以上、より更に好ましくは80.0質量%以上である。また、洗浄性及び再付着抑制効果の向上の観点から、好ましくは98.5質量%以下、より好ましくは97.0質量%以下、更に好ましくは95.0質量%以下である。そして、固形毛髪洗浄剤中の成分(A)及び成分(B)の合計量は、好ましくは30.0質量%以上98.5質量%以下、より好ましくは40.0質量%以上98.5質量%以下、更に好ましくは60.0質量%以上97.0質量%以下、より更に好ましくは70.0質量%以上95.0質量%以下、より更に好ましくは80.0質量%以上95.0質量%以下である。
 また、固形毛髪洗浄剤中の成分(A)~(C)の合計量は、洗浄性及び再付着抑制効果の向上の観点から、好ましくは40質量%以上、より好ましくは60質量%以上、更に好ましくは80質量%以上、より更に好ましくは90質量%以上であり、100質量%であってよい。
The total amount of the component (A) and the component (B) in the solid hair cleansing agent is preferably 30.0% by mass or more, more preferably 30.0% by mass or more, from the viewpoint of improving the cleansing property by enhancing the carbonic acid effervescence and its sustainability. Is 40.0% by mass or more, more preferably 60.0% by mass or more, still more preferably 70.0% by mass or more, still more preferably 80.0% by mass or more. Further, from the viewpoint of improving the detergency and the effect of suppressing reattachment, it is preferably 98.5% by mass or less, more preferably 97.0% by mass or less, and further preferably 95.0% by mass or less. The total amount of the component (A) and the component (B) in the solid hair cleaning agent is preferably 30.0% by mass or more and 98.5% by mass or less, and more preferably 40.0% by mass or more and 98.5% by mass. % Or less, more preferably 60.0% by mass or more and 97.0% by mass or less, still more preferably 70.0% by mass or more and 95.0% by mass or less, still more preferably 80.0% by mass or more and 95.0% by mass. % Or less.
Further, the total amount of the components (A) to (C) in the solid hair cleansing agent is preferably 40% by mass or more, more preferably 60% by mass or more, and further, from the viewpoint of improving the cleansing property and the effect of suppressing reattachment. It is preferably 80% by mass or more, more preferably 90% by mass or more, and may be 100% by mass.
 本発明の固形毛髪洗浄剤には、その他の成分として、通常、固形製剤に用いられる成分を適宜含有させることができる。かかる成分としては、例えば、ポリエチレングリコール、ポリビニルピロリドン、ポリアクリル酸ソーダ、ポリエチレンイミン、ポリビニルアルコール等の合成水溶性高分子;にかわ、ゼラチン、コラーゲンタンパク、カゼイン、アルギン酸ナトリウム、カラギーナン、ファーセレラン、タマリンドガム、ペクチン、アラビアガム、グアーガム、キサンタンガム、トラガントガム、ローカストビーンガム、デキストリン、デキストラン、寒天、澱粉等の天然水溶性高分子;カルボキシメチルセルロース、メチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルセルロース、酢酸フタル酸セルロース、アルギン酸プロピレングリコールエステル、酸化澱粉、エステル化澱粉、エーテル化澱粉、カチオン澱粉等の半合成水溶性高分子;成分(C)以外の界面活性剤;硫酸ナトリウム、塩化カリウム、塩化ナトリウム、硝酸カリウム、硝酸ナトリウム、ポリリン酸ナトリウム、塩化アンモニウム、硫酸鉄、リン酸ナトリウム、チオ硫酸ナトリウム等の、成分(B)以外の無機塩;ケイ酸カルシウム、ブドウ糖等の賦形剤;崩壊助剤;生薬等の薬効成分;色素;香料;油剤;等が挙げられる。 The solid hair cleansing agent of the present invention can appropriately contain components usually used in solid preparations as other components. Examples of such components include synthetic water-soluble polymers such as polyethylene glycol, polyvinylpyrrolidone, sodium polyacrylic acid, polyethyleneimine, and polyvinyl alcohol; Natural water-soluble polymers such as pectin, arabic gum, guar gum, xanthan gum, tragant gum, locust bean gum, dextrin, dextran, agar, starch; carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, cellulose acetate phthalate, propylene glycol alginate Semi-synthetic water-soluble polymers such as esters, oxidized starch, esterified starch, etherified starch, cationic starch; surfactants other than component (C); sodium sulfate, potassium chloride, sodium chloride, potassium nitrate, sodium nitrate, polyphosphate Inorganic salts other than component (B) such as sodium, ammonium chloride, iron sulfate, sodium phosphate, sodium thiosulfate; excipients such as calcium silicate and glucose; disintegration aids; medicinal components such as crude drugs; dyes; Perfume; oil; etc. may be mentioned.
(剤型)
 本発明の固形毛髪洗浄剤の使用時の剤型(製品形態)としては、水に溶解させて用いる際の取り扱い性の観点から、好ましくは粉末又は錠剤であり、炭酸発泡の持続性向上の観点からは、より好ましくは錠剤である。錠剤には、打錠剤やブリケット型剤が含まれ、成形性の観点からは打錠剤であることがより好ましい。
 本発明の固形毛髪洗浄剤が打錠剤又はブリケット型剤である場合、プレス打錠機やブリケットマシーンを用いて圧縮成形法等の常法に従って製造することができる。
 打錠剤又はブリケット型剤の製造においては、例えば、本発明の固形毛髪洗浄剤を構成する全成分をドライブレンドして得られた粉末を圧縮成形に供してもよく、成分の一部を予め造粒あるいは成形した後、残りの成分と混合して得られた混合物を圧縮成形に供してもよい。
(Dosage form)
The dosage form (product form) of the solid hair cleansing agent of the present invention when used is preferably a powder or a tablet from the viewpoint of handleability when dissolved in water and used, and from the viewpoint of improving the sustainability of carbonic acid effervescence. From the above, it is more preferably a tablet. The tablet contains a tablet or a briquette mold, and is more preferably a tablet from the viewpoint of moldability.
When the solid hair cleaning agent of the present invention is a tablet or briquette type agent, it can be produced by using a press tableting machine or a briquette machine according to a conventional method such as a compression molding method.
In the production of tablet or briquette molds, for example, a powder obtained by dry-blending all the components constituting the solid hair cleansing agent of the present invention may be subjected to compression molding, and some of the components may be prepared in advance. After granulation or molding, the mixture obtained by mixing with the remaining components may be subjected to compression molding.
(性状)
 本発明の固形毛髪洗浄剤は、水に添加し、溶解させて用いるものである。洗浄性及び再付着抑制効果の向上の観点、並びに、洗髪行動において洗髪後のすすぎ流しを省略する観点から、固形毛髪洗浄剤の1質量%水溶液の25℃におけるpHは、好ましくは6.0以下、より好ましくは5.8以下、更に好ましくは5.5以下であり、また、好ましくは4.0以上、より好ましくは4.5以上である。そして、固形毛髪洗浄剤の1質量%水溶液の25℃におけるpHは、好ましくは4.0以上6.0以下、より好ましくは4.0以上5.8以下、更に好ましくは4.0以上5.5以下、より更に好ましくは4.5以上5.5以下である。
 固形毛髪洗浄剤の1質量%水溶液の25℃におけるpHが上記範囲であると、固形毛髪洗浄剤を用いた洗髪時に、該毛髪洗浄剤を添加した水(すなわち毛髪洗浄液)のpHを6.0以下に調整しやすくなるため、洗浄性及び再付着抑制効果が向上するとともに、洗髪後のすすぎ流しを省略することが可能になる。上記pHは、具体的には実施例に記載の方法により測定できる。
(Characteristics)
The solid hair cleansing agent of the present invention is used by adding it to water and dissolving it. From the viewpoint of improving the detergency and the effect of suppressing reattachment, and from the viewpoint of omitting rinsing after washing the hair in the hair washing behavior, the pH of a 1% by mass aqueous solution of a solid hair cleaning agent at 25 ° C. is preferably 6.0 or less. , More preferably 5.8 or less, still more preferably 5.5 or less, and preferably 4.0 or more, more preferably 4.5 or more. The pH of the 1% by mass aqueous solution of the solid hair cleansing agent at 25 ° C. is preferably 4.0 or more and 6.0 or less, more preferably 4.0 or more and 5.8 or less, and further preferably 4.0 or more and 5. It is 5 or less, more preferably 4.5 or more and 5.5 or less.
When the pH of a 1% by mass aqueous solution of a solid hair cleaning agent at 25 ° C. is in the above range, the pH of the water to which the hair cleaning agent is added (that is, the hair cleaning liquid) is 6.0 when the hair is washed with the solid hair cleaning agent. Since it becomes easy to adjust to the following, the detergency and the effect of suppressing reattachment are improved, and it is possible to omit the rinsing after washing the hair. Specifically, the pH can be measured by the method described in Examples.
[毛髪の洗浄方法]
 本発明は、下記工程(I)又は工程(II)を有する、毛髪の洗浄方法(以下「本発明の方法」ともいう)を提供する。
工程(I):前記固形毛髪洗浄剤を水に添加し、炭酸ガス発泡中に該水に毛髪を浸漬させる工程
工程(II):水に毛髪を浸漬させ、次いで、該水に前記固形毛髪洗浄剤を添加する工程
 本発明の方法によれば、毛髪上で洗浄剤を泡立てて洗浄する操作を行うことなく、毛髪洗浄液に毛髪を浸漬させるだけで洗髪を行うことが可能になる。また、洗髪後のすすぎ流し等を省略することができる。
[How to wash hair]
The present invention provides a method for cleaning hair (hereinafter, also referred to as "method of the present invention"), which comprises the following step (I) or step (II).
Step (I): Add the solid hair cleanser to water and immerse the hair in the water during carbon dioxide foaming Step (II): Immerse the hair in water and then wash the solid hair in the water. Step of Adding Agent According to the method of the present invention, it is possible to wash hair simply by immersing the hair in a hair washing liquid without performing an operation of foaming and washing the cleaning agent on the hair. In addition, it is possible to omit rinsing and the like after washing the hair.
 工程(I)及び工程(II)において、毛髪は、乾燥状態のまま毛髪洗浄液又は水に浸漬させてもよく、水で濡らしてから浸漬させてもよい。
 工程(I)では、毛髪の洗浄性向上の観点から、固形毛髪洗浄剤を水に添加した直後に毛髪を浸漬させることが好ましい。炭酸ガス発泡中の毛髪洗浄液に毛髪を浸漬することにより、毛髪の洗浄効果が高まるためである。工程(I)では、固形毛髪洗浄剤を水に添加した後、好ましくは3分以内、より好ましくは1分以内、更に好ましくは0.5分以内に毛髪を浸漬させる。
 本発明の方法は、炭酸発泡中の毛髪洗浄液に毛髪を浸漬させて毛髪の洗浄効果を高める観点から、工程(I)又は工程(II)を有していればよく、工程(II)を有することがより好ましい。
In the steps (I) and (II), the hair may be immersed in a hair cleaning solution or water in a dry state, or may be wetted with water and then immersed.
In the step (I), from the viewpoint of improving the cleansing property of the hair, it is preferable to immerse the hair immediately after adding the solid hair cleansing agent to water. This is because the hair cleaning effect is enhanced by immersing the hair in the hair cleaning solution during carbon dioxide foaming. In the step (I), after adding the solid hair cleansing agent to water, the hair is immersed preferably within 3 minutes, more preferably within 1 minute, and further preferably within 0.5 minutes.
The method of the present invention may have step (I) or step (II) from the viewpoint of immersing the hair in the hair washing solution during carbonic acid effervescence to enhance the hair washing effect, and has step (II). Is more preferable.
 工程(I)及び工程(II)において、毛髪と、毛髪を浸漬させる毛髪洗浄液又は水との浴比(毛髪/毛髪洗浄液又は水)は、洗浄性及び再付着抑制効果の向上の観点、及び、洗髪後のすすぎ流しを省略する観点から、質量比で、好ましくは0.1/99.9~50/50、より好ましくは0.5/99.5~30/70である。
 また工程(I)及び工程(II)において、固形毛髪洗浄剤と、該固形毛髪洗浄剤を添加する水との浴比(固形毛髪洗浄剤/水)は、洗浄性及び再付着抑制効果の向上の観点、及び、洗髪後のすすぎ流しを省略する観点から、質量比で、好ましくは0.01/99.99~20/80、より好ましくは0.1/99.9~15/85、更に好ましくは0.2/99.8~10/90である。
In the steps (I) and (II), the bath ratio (hair / hair cleaning solution or water) between the hair and the hair cleaning solution or water for immersing the hair is determined from the viewpoint of improving the cleaning property and the reattachment suppressing effect, and From the viewpoint of omitting rinsing after washing the hair, the mass ratio is preferably 0.1 / 99.9 to 50/50, more preferably 0.5 / 99.5 to 30/70.
Further, in the steps (I) and (II), the bath ratio (solid hair cleansing agent / water) of the solid hair cleansing agent and the water to which the solid hair cleansing agent is added improves the cleansing property and the effect of suppressing reattachment. From the viewpoint of, and from the viewpoint of omitting rinsing after washing the hair, the mass ratio is preferably 0.01 / 99.99 to 20/80, more preferably 0.1 / 99.9 to 15/85, and further. It is preferably 0.2 / 99.8 to 10/90.
 工程(I)及び工程(II)において、毛髪洗浄剤を添加した水(すなわち毛髪洗浄液)のpHは、洗浄性及び再付着抑制効果の向上の観点、及び、洗髪後のすすぎ流しを省略する観点から、好ましくは6.0以下、より好ましくは5.8以下、更に好ましくは5.5以下であり、また、好ましくは4.0以上、より好ましくは4.5以上である。そして、工程(I)及び工程(II)において、毛髪洗浄剤を添加した水(すなわち毛髪洗浄液)のpHは、好ましくは4.0以上6.0以下、より好ましくは4.0以上5.8以下、更に好ましくは4.0以上5.5以下、より更に好ましくは4.5以上5.5以下である。pHは、前記と同様の方法により測定できる。
 毛髪を浸漬させる毛髪洗浄液又は水の温度は、通常30~45℃、好ましくは35~42℃の範囲である。
 毛髪洗浄液に毛髪を浸漬させる時間は特に制限されないが、洗浄性向上及び洗髪行動の負担低減の観点から、好ましくは1~30分、より好ましくは1~20分、更に好ましくは5~20分である。工程(II)においては、「毛髪洗浄液に毛髪を浸漬させる時間」の起点は、毛髪を浸漬させた水に固形毛髪洗浄剤を添加した時点とする。
In the steps (I) and (II), the pH of the water to which the hair cleansing agent is added (that is, the hair cleansing liquid) has a viewpoint of improving the cleansing property and the effect of suppressing reattachment, and a viewpoint of omitting rinsing after washing the hair. Therefore, it is preferably 6.0 or less, more preferably 5.8 or less, still more preferably 5.5 or less, and preferably 4.0 or more, more preferably 4.5 or more. Then, in the steps (I) and (II), the pH of the water to which the hair cleansing agent is added (that is, the hair cleansing liquid) is preferably 4.0 or more and 6.0 or less, more preferably 4.0 or more and 5.8. Below, it is more preferably 4.0 or more and 5.5 or less, and even more preferably 4.5 or more and 5.5 or less. The pH can be measured by the same method as described above.
The temperature of the hair cleaning solution or water for immersing the hair is usually in the range of 30 to 45 ° C, preferably 35 to 42 ° C.
The time for immersing the hair in the hair cleaning solution is not particularly limited, but is preferably 1 to 30 minutes, more preferably 1 to 20 minutes, still more preferably 5 to 20 minutes from the viewpoint of improving the cleaning property and reducing the burden on the hair washing behavior. be. In the step (II), the starting point of the "time for immersing the hair in the hair cleaning liquid" is the time when the solid hair cleaning agent is added to the water in which the hair is immersed.
 工程(I)又は工程(II)により毛髪を浸漬させる工程を行った後は、毛髪洗浄液から毛髪を引き上げ、次いで毛髪を乾燥させることが好ましい。毛髪洗浄液から毛髪を引き上げた後であって且つ乾燥を行う前に、必要に応じて毛髪をすすぎ流す工程を行うこともできる。しかしながら、本発明の固形毛髪洗浄剤を用いると毛髪への皮脂等の再付着も少なく、洗い流す必要がないため、本発明の方法では毛髪をすすぎ流す工程を省略することができる。これにより、洗髪行動の負担を低減できる。
 毛髪の乾燥はタオル、吸水材、ドライヤー、又はこれらを組み合わせて、常法により行うことができる。
After performing the step of immersing the hair by the step (I) or the step (II), it is preferable to pull the hair out of the hair cleaning solution and then dry the hair. If necessary, a step of rinsing the hair can be performed after the hair is pulled out from the hair cleaning solution and before the hair is dried. However, when the solid hair cleaning agent of the present invention is used, the reattachment of sebum and the like to the hair is small and it is not necessary to wash it off. Therefore, in the method of the present invention, the step of rinsing the hair can be omitted. As a result, the burden of hair washing behavior can be reduced.
Hair can be dried by a conventional method using a towel, a water absorbing material, a dryer, or a combination thereof.
[使用]
 本発明はさらに、
 成分(A):有機酸、
 成分(B):炭酸塩、及び、
 成分(C):ノニオン性界面活性剤、
を含有し、
 成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]が4.0以上24.0以下である固形製剤の、毛髪洗浄剤としての使用を提供する。成分(A)~(C)、固形製剤、その使用方法(固形製剤を用いた毛髪の洗浄方法)、及びこれらの好適態様は前記固形毛髪洗浄剤と同じである。
[use]
The present invention further
Ingredient (A): organic acid,
Ingredient (B): carbonate and
Ingredient (C): Nonionic surfactant,
Contains,
The mass ratio [{(A) + (B)} / (C)] of the total amount of the component (A) and the component (B) to the component (C) is 4.0 or more and 24.0 or less. , Offering use as a hair cleanser. The components (A) to (C), the solid preparation, the method of use thereof (the method of washing hair using the solid preparation), and the preferred embodiments thereof are the same as those of the solid hair washing agent.
 以下、上述した実施形態に関し、本発明はさらに下記を開示する。
<1>
 成分(A):有機酸、
 成分(B):炭酸塩、及び、
 成分(C):ノニオン性界面活性剤、
を含有し、
 成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]が4.0以上24.0以下である、固形毛髪洗浄剤。
<2>
 成分(A)がカルボン酸系化合物、有機スルホン酸系化合物、有機リン酸系化合物、及びアスコルビン酸からなる群から選ばれる1種以上、好ましくはカルボン酸系化合物及びアスコルビン酸からなる群から選ばれる1種以上、より好ましくはコハク酸、酒石酸、リンゴ酸、クエン酸、及びアスコルビン酸からなる群から選ばれる1種以上、更に好ましくはコハク酸、リンゴ酸、及びクエン酸からなる群から選ばれる1種以上、より更に好ましくはコハク酸である、<1>に記載の固形毛髪洗浄剤。
<3>
 成分(B)がアルカリ金属炭酸塩、アルカリ土類金属炭酸塩、アルカリ金属重炭酸塩、及びアルカリ土類金属重炭酸塩からなる群から選ばれる1種以上であり、好ましくは重炭酸塩を含む、<1>又は<2>に記載の固形毛髪洗浄剤。
<4>
 前記重炭酸塩が炭酸水素ナトリウム及び炭酸水素カルシウムからなる群から選ばれる1種以上であり、好ましくは炭酸水素ナトリウムを含み、より好ましくは炭酸水素ナトリウムである、<3>に記載の固形毛髪洗浄剤。
<5>
 成分(B)中の重炭酸塩の含有量が、好ましくは50質量%以上、より好ましくは60質量%以上、更に好ましくは70質量%以上、より更に好ましくは80質量%以上、より更に好ましくは90質量%以上であり、100質量%以下である、<1>~<4>のいずれか1に記載の固形毛髪洗浄剤。
<6>
 成分(C)のHLB値が、好ましくは10.0以上20.0以下、より好ましくは10.5以上18.5以下、更に好ましくは12.0以上18.0以下、より更に好ましくは14.0以上17.0以下、より更に好ましくは14.0以上16.5以下である、<1>~<5>のいずれか1に記載の固形毛髪洗浄剤。
<7>
 成分(C)がポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルケニルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、ポリオキシエチレンソルビット脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、アルキルグルコシド、アルキルアルカノールアミド、アルキルグリセリルエーテル、高級脂肪酸ショ糖エステル、ポリグリセリン脂肪酸エステル、ポリオキシエチレン硬化ヒマシ油、及びアルキルサッカライドからなる群から選ばれる1種以上、好ましくはポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルケニルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、アルキルグリセリルエーテル、及びポリオキシエチレン硬化ヒマシ油からなる群から選ばれる1種以上、より好ましくはポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルケニルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、及びポリオキシエチレン硬化ヒマシ油からなる群から選ばれる1種以上、更に好ましくはポリオキシエチレンアルキルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、及びポリオキシエチレン硬化ヒマシ油からなる群から選ばれる1種以上である、<1>~<6>のいずれか1に記載の固形毛髪洗浄剤。
<8>
 ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルケニルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、ポリオキシエチレンソルビット脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、及びポリオキシエチレン硬化ヒマシ油におけるオキシエチレン基の平均付加モル数が、好ましくは2以上150以下、より好ましくは3以上80以下、更に好ましくは5以上60以下、より更に好ましくは6以上40以下、より更に好ましくは8以上40以下である、<7>に記載の固形毛髪洗浄剤。
<9>
 ポリオキシエチレンアルキルエーテル、アルキルグルコシド、アルキルアルカノールアミド、アルキルグリセリルエーテル、及びアルキルサッカライドにおけるアルキル基、ポリオキシエチレンアルケニルエーテルにおけるアルケニル基、並びに、ポリオキシエチレンソルビタン脂肪酸エステル、ポリオキシエチレンソルビット脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、高級脂肪酸ショ糖エステル、及びポリグリセリン脂肪酸エステルにおける脂肪酸が、好ましくは炭素数8以上22以下、より好ましくは炭素数10以上22以下、更に好ましくは炭素数12以上20以下である、<7>又は<8>に記載の固形毛髪洗浄剤。
<10>
 成分(C)がポリオキシエチレンラウリルエーテル、モノステアリン酸ポリオキシエチレンソルビタン、及びポリオキシエチレン水添ヒマシ油からなる群から選ばれる1種以上である、<7>~<9>のいずれか1に記載の固形毛髪洗浄剤。
<11>
 固形毛髪洗浄剤中の成分(A)の含有量が、好ましくは15.0質量%以上45.0質量%以下、より好ましくは20.0質量%以上45.0質量%以下、更に好ましくは25.0質量%以上42.0質量%以下、より更に好ましくは30.0質量%以上40.0質量%以下である、<1>~<10>のいずれか1に記載の固形毛髪洗浄剤。
Hereinafter, the present invention further discloses the following with respect to the above-described embodiment.
<1>
Ingredient (A): organic acid,
Ingredient (B): carbonate and
Ingredient (C): Nonionic surfactant,
Contains,
Solid hair having a mass ratio [{(A) + (B)} / (C)] of the total amount of the component (A) and the component (B) to the component (C) of 4.0 or more and 24.0 or less. Washing soap.
<2>
The component (A) is selected from one or more selected from the group consisting of a carboxylic acid-based compound, an organic sulfonic acid-based compound, an organic phosphoric acid-based compound, and ascorbic acid, preferably selected from the group consisting of a carboxylic acid-based compound and ascorbic acid. One or more, more preferably one or more selected from the group consisting of succinic acid, tartaric acid, malic acid, citric acid, and ascorbic acid, still more preferably one selected from the group consisting of succinic acid, malic acid, and citric acid 1. The solid hair cleaning agent according to <1>, which is more than a seed, more preferably succinic acid.
<3>
The component (B) is at least one selected from the group consisting of alkali metal carbonate, alkaline earth metal carbonate, alkali metal bicarbonate, and alkaline earth metal bicarbonate, and preferably contains bicarbonate. , <1> or <2>.
<4>
The solid hair washing according to <3>, wherein the bicarbonate is at least one selected from the group consisting of sodium hydrogen carbonate and calcium hydrogen carbonate, preferably containing sodium hydrogen carbonate, and more preferably sodium hydrogen carbonate. Agent.
<5>
The content of bicarbonate in the component (B) is preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably 70% by mass or more, still more preferably 80% by mass or more, still more preferably. The solid hair cleaning agent according to any one of <1> to <4>, which is 90% by mass or more and 100% by mass or less.
<6>
The HLB value of the component (C) is preferably 10.0 or more and 20.0 or less, more preferably 10.5 or more and 18.5 or less, still more preferably 12.0 or more and 18.0 or less, still more preferably 14. The solid hair cleansing agent according to any one of <1> to <5>, which is 0 or more and 17.0 or less, more preferably 14.0 or more and 16.5 or less.
<7>
Component (C) is polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene fatty acid ester, alkyl glucoside, alkyl alkanolamide, alkyl glyceryl ether, higher fatty acid. One or more selected from the group consisting of sucrose ester, polyglycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, and alkyl saccharides, preferably polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, One or more selected from the group consisting of polyoxyethylene fatty acid ester, alkyl glyceryl ether, and polyoxyethylene cured castor oil, more preferably polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, and One or more selected from the group consisting of polyoxyethylene cured castor oil, more preferably one or more selected from the group consisting of polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene cured castor oil. , The solid hair cleaning agent according to any one of <1> to <6>.
<8>
The average number of moles of oxyethylene groups added in polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene fatty acid ester, and polyoxyethylene hydrogenated castor oil is The solid according to <7>, preferably 2 or more and 150 or less, more preferably 3 or more and 80 or less, still more preferably 5 or more and 60 or less, still more preferably 6 or more and 40 or less, still more preferably 8 or more and 40 or less. Hair cleaning agent.
<9>
Alkyl groups in polyoxyethylene alkyl ethers, alkyl glucosides, alkyl alkanolamides, alkyl glyceryl ethers, and alkyl saccharides, alkenyl groups in polyoxyethylene alkenyl ethers, and polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbit fatty acid esters, poly. The fatty acids in the oxyethylene fatty acid ester, the higher fatty acid sucrose ester, and the polyglycerin fatty acid ester are preferably 8 or more and 22 or less carbon atoms, more preferably 10 or more and 22 or less carbon atoms, and further preferably 12 or more and 20 or less carbon atoms. , <7> or <8>.
<10>
Any one of <7> to <9>, wherein the component (C) is at least one selected from the group consisting of polyoxyethylene lauryl ether, polyoxyethylene sorbitan monostearate, and polyoxyethylene hydrogenated castor oil. The solid hair cleaning agent described in.
<11>
The content of the component (A) in the solid hair cleaning agent is preferably 15.0% by mass or more and 45.0% by mass or less, more preferably 20.0% by mass or more and 45.0% by mass or less, still more preferably 25. The solid hair cleaning agent according to any one of <1> to <10>, which is 0.0% by mass or more and 42.0% by mass or less, more preferably 30.0% by mass or more and 40.0% by mass or less.
<12>
 固形毛髪洗浄剤中の成分(B)の含有量が、好ましくは15.0質量%以上60.0質量%以下、より好ましくは20.0質量%以上60.0質量%以下、更に好ましくは30.0質量%以上58.0質量%以下、より更に好ましくは40.0質量%以上55.0質量%以下である、<1>~<11>のいずれか1に記載の固形毛髪洗浄剤。
<13>
 固形毛髪洗浄剤中の成分(C)の含有量が、好ましくは1.5質量%以上20.0質量%以下、より好ましくは3.0質量%以上20.0質量%以下、更に好ましくは5.0質量%以上20.0質量%以下、より更に好ましくは8.0質量%以上18.0質量%以下である、<1>~<12>のいずれか1に記載の固形毛髪洗浄剤。
<14>
 成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]が、好ましくは4.0以上20.0以下、より好ましくは4.0以上15.0以下、更に好ましくは4.5以上12.0以下である、<1>~<13>のいずれか1に記載の固形毛髪洗浄剤。
<15>
 成分(B)に対する成分(A)の質量比[(A)/(B)]は、好ましくは0.20以上1.50以下、より好ましくは0.40以上1.20以下、更に好ましくは0.60以上1.00以下、より更に好ましくは0.60以上0.80以下である、<1>~<14>のいずれか1に記載の固形毛髪洗浄剤。
<16>
 固形毛髪洗浄剤中の成分(A)及び成分(B)の合計量が、好ましくは30.0質量%以上98.5質量%以下、より好ましくは40.0質量%以上98.5質量%以下、更に好ましくは60.0質量%以上97.0質量%以下、より更に好ましくは70.0質量%以上95.0質量%以下、より更に好ましくは80.0質量%以上95.0質量%以下である、<1>~<15>のいずれか1に記載の固形毛髪洗浄剤。
<17>
 固形毛髪洗浄剤中の成分(A)~(C)の合計量が、好ましくは40質量%以上、より好ましくは60質量%以上、更に好ましくは80質量%以上、より更に好ましくは90質量%以上であり、100質量%以下である、<1>~<16>のいずれか1に記載の固形毛髪洗浄剤。
<18>
 固形毛髪洗浄剤の使用時の剤型が、好ましくは粉末又は錠剤、より好ましくは錠剤、更に好ましくは打錠剤である、<1>~<17>のいずれか1に記載の固形毛髪洗浄剤。
<19>
 固形毛髪洗浄剤の1質量%水溶液の25℃におけるpHが、好ましくは4.0以上6.0以下、より好ましくは4.0以上5.8以下、更に好ましくは4.0以上5.5以下、より更に好ましくは4.5以上5.5以下である、<1>~<18>のいずれか1に記載の固形毛髪洗浄剤。
<20>
 下記工程(I)又は工程(II)を有し、好ましくは工程(II)を有する、毛髪の洗浄方法。
工程(I):<1>~<19>のいずれか1の固形毛髪洗浄剤を水に添加し、炭酸ガス発泡中に該水に毛髪を浸漬させる工程
工程(II):水に毛髪を浸漬させ、次いで、該水に<1>~<19>のいずれか1の固形毛髪洗浄剤を添加する工程
<21>
 工程(I)において、固形毛髪洗浄剤を水に添加した直後に毛髪を浸漬させる、<20>に記載の方法。
<22>
 工程(I)及び工程(II)において、毛髪と、毛髪を浸漬させる毛髪洗浄液又は水との浴比(毛髪/毛髪洗浄液又は水)が、質量比で、好ましくは0.1/99.9~50/50、より好ましくは0.5/99.5~30/70である、<20>又は<21>に記載の方法。
<23>
 工程(I)及び工程(II)において、毛髪洗浄剤を添加した水(毛髪洗浄液)のpHが、好ましくは4.0以上6.0以下、より好ましくは4.0以上5.8以下、更に好ましくは4.0以上5.5以下、より更に好ましくは4.5以上5.5以下である、<20>~<22>のいずれか1に記載の方法。
<24>
 毛髪洗浄剤を添加した水(毛髪洗浄液)に毛髪を浸漬させる時間が、好ましくは1~30分、より好ましくは1~20分、更に好ましくは5~20分である、<20>~<23>のいずれか1に記載の方法。
<25>
 工程(I)又は工程(II)により毛髪を浸漬させる工程を行った後に、毛髪洗浄剤を添加した水(毛髪洗浄液)から毛髪を引き上げ、次いで毛髪を乾燥させる、<20>~<24>のいずれか1に記載の方法。
<26>
 毛髪洗浄剤を添加した水(毛髪洗浄液)から毛髪を引き上げた後であって且つ乾燥を行う前に、毛髪をすすぎ流す工程を行う、<20>~<25>のいずれか1に記載の方法。
<27>
 毛髪洗浄剤を添加した水(毛髪洗浄液)から毛髪を引き上げた後であって且つ乾燥を行う前に、毛髪をすすぎ流す工程を省略する、<20>~<25>のいずれか1に記載の方法。
<28>
 成分(A):有機酸、
 成分(B):炭酸塩、及び、
 成分(C):ノニオン性界面活性剤、
を含有し、
 成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]が4.0以上24.0以下である固形製剤の、毛髪洗浄剤としての使用。
<12>
The content of the component (B) in the solid hair cleaning agent is preferably 15.0% by mass or more and 60.0% by mass or less, more preferably 20.0% by mass or more and 60.0% by mass or less, still more preferably 30. The solid hair cleaning agent according to any one of <1> to <11>, which is 0.0% by mass or more and 58.0% by mass or less, more preferably 40.0% by mass or more and 55.0% by mass or less.
<13>
The content of the component (C) in the solid hair cleaning agent is preferably 1.5% by mass or more and 20.0% by mass or less, more preferably 3.0% by mass or more and 20.0% by mass or less, still more preferably 5. The solid hair cleaning agent according to any one of <1> to <12>, which is 0.0% by mass or more and 20.0% by mass or less, more preferably 8.0% by mass or more and 18.0% by mass or less.
<14>
The mass ratio [{(A) + (B)} / (C)] of the total amount of the component (A) and the component (B) to the component (C) is preferably 4.0 or more and 20.0 or less. The solid hair cleansing agent according to any one of <1> to <13>, preferably 4.0 or more and 15.0 or less, more preferably 4.5 or more and 12.0 or less.
<15>
The mass ratio [(A) / (B)] of the component (A) to the component (B) is preferably 0.20 or more and 1.50 or less, more preferably 0.40 or more and 1.20 or less, and further preferably 0. The solid hair cleansing agent according to any one of <1> to <14>, which is .60 or more and 1.00 or less, more preferably 0.60 or more and 0.80 or less.
<16>
The total amount of the component (A) and the component (B) in the solid hair cleaning agent is preferably 30.0% by mass or more and 98.5% by mass or less, more preferably 40.0% by mass or more and 98.5% by mass or less. , More preferably 60.0% by mass or more and 97.0% by mass or less, further preferably 70.0% by mass or more and 95.0% by mass or less, still more preferably 80.0% by mass or more and 95.0% by mass or less. The solid hair cleaning agent according to any one of <1> to <15>.
<17>
The total amount of the components (A) to (C) in the solid hair cleansing agent is preferably 40% by mass or more, more preferably 60% by mass or more, still more preferably 80% by mass or more, still more preferably 90% by mass or more. The solid hair cleansing agent according to any one of <1> to <16>, which is 100% by mass or less.
<18>
The solid hair cleansing agent according to any one of <1> to <17>, wherein the dosage form when the solid hair cleansing agent is used is preferably powder or tablet, more preferably tablet, and further preferably tablet.
<19>
The pH of a 1% by mass aqueous solution of a solid hair cleanser at 25 ° C. is preferably 4.0 or more and 6.0 or less, more preferably 4.0 or more and 5.8 or less, and further preferably 4.0 or more and 5.5 or less. The solid hair cleansing agent according to any one of <1> to <18>, which is more preferably 4.5 or more and 5.5 or less.
<20>
A hair washing method comprising the following step (I) or step (II), preferably step (II).
Step (I): Add the solid hair cleanser from any one of <1> to <19> to water and immerse the hair in the water during carbon dioxide foaming. Step (II): Immerse the hair in water. Then, the step <21> of adding the solid hair cleansing agent according to any one of <1> to <19> to the water.
The method according to <20>, wherein in the step (I), the hair is immersed immediately after the solid hair cleansing agent is added to water.
<22>
In the steps (I) and (II), the bath ratio (hair / hair cleaning solution or water) of the hair to the hair cleaning solution or water for immersing the hair is preferably 0.1 / 99.9 or more in terms of mass ratio. 50/50, more preferably 0.5 / 99.5 to 30/70, according to <20> or <21>.
<23>
In the steps (I) and (II), the pH of the water (hair washing liquid) to which the hair washing agent is added is preferably 4.0 or more and 6.0 or less, more preferably 4.0 or more and 5.8 or less, and further. The method according to any one of <20> to <22>, preferably 4.0 or more and 5.5 or less, and even more preferably 4.5 or more and 5.5 or less.
<24>
The time for immersing the hair in water (hair cleaning solution) to which a hair cleaning agent is added is preferably 1 to 30 minutes, more preferably 1 to 20 minutes, still more preferably 5 to 20 minutes, <20> to <23. > The method according to any one of 1.
<25>
After performing the step of immersing the hair by the step (I) or the step (II), the hair is pulled up from the water (hair washing liquid) to which the hair washing agent is added, and then the hair is dried, <20> to <24>. The method according to any one.
<26>
The method according to any one of <20> to <25>, wherein the step of rinsing the hair is performed after the hair is pulled up from water (hair cleaning liquid) to which a hair cleaning agent is added and before the hair is dried. ..
<27>
4. The method according to any one of <20> to <25>, wherein the step of rinsing the hair is omitted after the hair is pulled up from water (hair washing liquid) to which a hair washing agent is added and before the hair is dried. Method.
<28>
Ingredient (A): organic acid,
Ingredient (B): carbonate and
Ingredient (C): Nonionic surfactant,
Contains,
The mass ratio [{(A) + (B)} / (C)] of the total amount of the component (A) and the component (B) to the component (C) is 4.0 or more and 24.0 or less. , Use as a hair cleanser.
 以下、本発明を実施例により説明するが、本発明は実施例の範囲に限定されない。 Hereinafter, the present invention will be described by way of examples, but the present invention is not limited to the scope of the examples.
実施例1~8、比較例1~6(固形毛髪洗浄剤の調製及び評価)
 実施例1~8、比較例2、及び比較例4~6については、表2~3に示す配合組成に従って各成分を配合して混合した後、得られた粉末を用いて、プレス打錠機にて、質量8.00~12.00g、錠高15.1~15.3mmのサイズにて打錠圧5MPaで打錠を行い、錠剤(打錠剤)型の固形毛髪洗浄剤を調製した。得られた固形毛髪洗浄剤を用いて、以下に示す方法で評価を行った。
 比較例1では脱イオン水を用いて評価を行った。また比較例3では、成分(C)を表2に示す割合で脱イオン水に溶解させた水溶液を用いて各評価を行った。
 なお、表に示す各成分の配合量(質量%)は、いずれも有効成分量である。
Examples 1 to 8 and Comparative Examples 1 to 6 (preparation and evaluation of solid hair cleanser)
For Examples 1 to 8, Comparative Examples 2 and 4 to 6, each component was blended and mixed according to the blending composition shown in Tables 2 to 3, and then a press tableting machine was used using the obtained powder. A tablet (tablet) type solid hair cleanser was prepared by tableting with a mass of 8.00 to 12.00 g and a tablet height of 15.1 to 15.3 mm and a tableting pressure of 5 MPa. Using the obtained solid hair cleanser, evaluation was performed by the method shown below.
In Comparative Example 1, deionized water was used for evaluation. Further, in Comparative Example 3, each evaluation was performed using an aqueous solution in which the component (C) was dissolved in deionized water at the ratio shown in Table 2.
The blending amount (% by mass) of each component shown in the table is the amount of the active ingredient.
<毛髪洗浄液のpH>
 表2~3に示す組成の毛髪洗浄液を調製し、該洗浄液の25℃におけるpHを、pHメーター(東亜ディーケーケー(株)製、HM-30R)を用いて測定した。
<pH of hair wash solution>
Hair cleaning solutions having the compositions shown in Tables 2 to 3 were prepared, and the pH of the cleaning solution at 25 ° C. was measured using a pH meter (HM-30R, manufactured by DKK-TOA CORPORATION).
<モデル皮脂の洗浄率>
 35mm×35mmのポリエチレンフィルム(質量W(g)とする)上に、表1に記載のモデル皮脂を20μL滴下し、該フィルムの質量を測定した(W(g)とする)。次に、表2~3に示す組成の毛髪洗浄液(40℃)100mLを調製し、前記フィルムを1分間浸漬させた。詳細には、実施例1~8及び比較例4~6については、40℃の水100mL中に前記フィルムを浸漬させた後に、固形毛髪洗浄剤1.00gを添加して1分間静置した。比較例2については、40℃の水100mL中に前記フィルムを浸漬させた後に、固形毛髪洗浄剤1.00gを添加して1分間静置した。比較例1、3については、表2に示す組成の毛髪洗浄液(40℃)100mLを調製した後に、前記フィルムを1分間浸漬させた。
 1分後、フィルムを引き上げて一晩乾燥させ、乾燥後のフィルムの質量を測定した(W(g)とする)。下記式からモデル皮脂の洗浄率を求め、4段階基準にて評価を行った。
  モデル皮脂の洗浄率(%)=(W-W)/(W-W)×100
〔評価基準〕
A:洗浄率70%超
B:洗浄率50%超70%以下
C:洗浄率30%以上50%以下
D:洗浄率30%未満
〔モデル皮脂組成〕
<Cleaning rate of model sebum>
20 μL of the model sebum shown in Table 1 was dropped onto a 35 mm × 35 mm polyethylene film (mass W 0 (g)), and the mass of the film was measured (W A (g)). Next, 100 mL of a hair cleaning solution (40 ° C.) having the composition shown in Tables 2 to 3 was prepared, and the film was immersed for 1 minute. Specifically, for Examples 1 to 8 and Comparative Examples 4 to 6, the film was immersed in 100 mL of water at 40 ° C., 1.00 g of a solid hair cleansing agent was added, and the film was allowed to stand for 1 minute. For Comparative Example 2, after immersing the film in 100 mL of water at 40 ° C., 1.00 g of a solid hair cleansing agent was added and the film was allowed to stand for 1 minute. For Comparative Examples 1 and 3, 100 mL of a hair washing solution (40 ° C.) having the composition shown in Table 2 was prepared, and then the film was immersed for 1 minute.
After 1 minute, the film was pulled up and dried overnight, and the mass of the dried film was measured (referred to as WB (g)). The cleaning rate of model sebum was calculated from the following formula and evaluated on a 4-step basis.
Cleaning rate of model sebum (%) = (WA - WB ) / (WA - W 0 ) x 100
〔Evaluation criteria〕
A: Cleaning rate over 70% B: Cleaning rate over 50% 70% or less C: Cleaning rate 30% or more and 50% or less D: Cleaning rate less than 30% [Model sebum composition]
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
<洗浄後の析出物の有無>
 前記「モデル皮脂の洗浄率」の評価に使用した後の毛髪洗浄液を、炭酸ガスの発生が終わるまで静置した後、目視にて析出物の有無を確認した。
<Presence or absence of precipitates after washing>
The hair cleaning solution used for the evaluation of the "cleaning rate of model sebum" was allowed to stand until the generation of carbon dioxide gas was completed, and then the presence or absence of precipitates was visually confirmed.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
 表中に記載の成分は下記である。
*1:モノステアリン酸ポリオキシエチレンソルビタン(20E.O.):ポリソルベート60、花王(株)製「レオドール TW-S120V」、HLB値14.9
*2:ポリオキシエチレン(6)ラウリルエーテル:花王(株)製「エマルゲン108」、HLB値12.1
*3:ポリオキシエチレン水添ヒマシ油(40E.O.):花王(株)製「エマノーン CH-40」、HLB値12.5
*4:ポリオキシエチレン(23)ラウリルエーテル:花王(株)製「エマルゲン123P」、HLB値16.9
The components listed in the table are as follows.
* 1: Polyoxyethylene sorbitan monostearate (20EO): Polysorbate 60, "Leodor TW-S120V" manufactured by Kao Corporation, HLB value 14.9
* 2: Polyoxyethylene (6) lauryl ether: "Emargen 108" manufactured by Kao Corporation, HLB value 12.1
* 3: Polyoxyethylene hydrogenated castor oil (40EO): "Emanon CH-40" manufactured by Kao Corporation, HLB value 12.5
* 4: Polyoxyethylene (23) lauryl ether: "Emargen 123P" manufactured by Kao Corporation, HLB value 16.9
 表2~3より、本実施例の固形毛髪洗浄剤は皮脂洗浄性が高いことがわかる。また皮脂洗浄後の洗浄液中に析出物が認められないことから、固形毛髪洗浄剤の溶け残り及び皮脂等の毛髪への再付着が生じるおそれも少ないと考えられる。 From Tables 2 and 3, it can be seen that the solid hair cleansing agent of this example has high sebum cleansing properties. Further, since no precipitate is observed in the cleaning liquid after sebum cleaning, it is considered that there is little possibility that the solid hair cleaning agent remains undissolved and sebum and the like reattach to the hair.
 本発明の固形毛髪洗浄剤によれば、毛髪を浸漬させるだけで洗髪を行うことが可能になり、洗浄性が高く、毛髪洗浄剤の溶け残り及び皮脂等の毛髪への再付着も抑制できる。該固形毛髪洗浄剤を用いた洗髪行動では、毛髪上で洗浄剤を泡立てて洗浄する操作や、洗髪後のすすぎ流し等を省略できるため、医療現場、介護現場での洗髪行動の負担を軽減し、洗髪頻度の低下を抑制することも可能になる。 According to the solid hair cleansing agent of the present invention, it is possible to wash the hair simply by immersing the hair, the cleansing property is high, and the undissolved residue of the hair cleansing agent and the reattachment of sebum and the like to the hair can be suppressed. In the hair washing action using the solid hair washing agent, the operation of lathering the washing agent on the hair and washing after washing the hair can be omitted, so that the burden of the hair washing action in the medical field and the nursing field can be reduced. It is also possible to suppress a decrease in the frequency of hair washing.

Claims (9)

  1.  成分(A):有機酸、
     成分(B):炭酸塩、及び、
     成分(C):ノニオン性界面活性剤、
    を含有し、
     成分(C)に対する、成分(A)及び成分(B)の合計量の質量比[{(A)+(B)}/(C)]が4.0以上24.0以下である、固形毛髪洗浄剤。
    Ingredient (A): organic acid,
    Ingredient (B): carbonate and
    Ingredient (C): Nonionic surfactant,
    Contains,
    Solid hair having a mass ratio [{(A) + (B)} / (C)] of the total amount of the component (A) and the component (B) to the component (C) of 4.0 or more and 24.0 or less. Washing soap.
  2.  前記成分(B)に対する前記成分(A)の質量比[(A)/(B)]が0.20以上1.50以下である、請求項1に記載の固形毛髪洗浄剤。 The solid hair cleansing agent according to claim 1, wherein the mass ratio [(A) / (B)] of the component (A) to the component (B) is 0.20 or more and 1.50 or less.
  3.  前記成分(C)のHLB値が10.0以上20.0以下である、請求項1又は2に記載の固形毛髪洗浄剤。 The solid hair cleansing agent according to claim 1 or 2, wherein the HLB value of the component (C) is 10.0 or more and 20.0 or less.
  4.  前記成分(C)がポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルケニルエーテル、ポリオキシエチレンソルビタン脂肪酸エステル、ポリオキシエチレンソルビット脂肪酸エステル、ポリオキシエチレン脂肪酸エステル、アルキルグルコシド、アルキルアルカノールアミド、アルキルグリセリルエーテル、高級脂肪酸ショ糖エステル、ポリグリセリン脂肪酸エステル、ポリオキシエチレン硬化ヒマシ油、及びアルキルサッカライドからなる群から選ばれる1種以上である、請求項1~3のいずれか1項に記載の固形毛髪洗浄剤。 The component (C) is polyoxyethylene alkyl ether, polyoxyethylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene fatty acid ester, alkyl glucoside, alkyl alkanolamide, alkyl glyceryl ether, higher grade. The solid hair cleaning agent according to any one of claims 1 to 3, which is one or more selected from the group consisting of fatty acid sucrose ester, polyglycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, and alkyl saccharide.
  5.  前記成分(A)がコハク酸、酒石酸、リンゴ酸、クエン酸、及びアスコルビン酸からなる群から選ばれる1種以上である、請求項1~4のいずれか1項に記載の固形毛髪洗浄剤。 The solid hair cleaning agent according to any one of claims 1 to 4, wherein the component (A) is at least one selected from the group consisting of succinic acid, tartaric acid, malic acid, citric acid, and ascorbic acid.
  6.  前記固形毛髪洗浄剤中の前記成分(A)~(C)の合計量が40質量%以上である、請求項1~5のいずれか1項に記載の固形毛髪洗浄剤。 The solid hair cleansing agent according to any one of claims 1 to 5, wherein the total amount of the components (A) to (C) in the solid hair cleansing agent is 40% by mass or more.
  7.  前記固形毛髪洗浄剤の1質量%水溶液の25℃におけるpHが6.0以下である、請求項1~6のいずれか1項に記載の固形毛髪洗浄剤。 The solid hair cleansing agent according to any one of claims 1 to 6, wherein the pH of the 1% by mass aqueous solution of the solid hair cleansing agent at 25 ° C. is 6.0 or less.
  8.  下記工程(I)又は工程(II)を有する、毛髪の洗浄方法。
    工程(I):請求項1~7のいずれか1項に記載の固形毛髪洗浄剤を水に添加し、炭酸ガス発泡中に該水に毛髪を浸漬させる工程
    工程(II):水に毛髪を浸漬させ、次いで、該水に請求項1~7のいずれか1項に記載の固形毛髪洗浄剤を添加する工程
    A method for cleaning hair, which comprises the following step (I) or step (II).
    Step (I): The solid hair cleaning agent according to any one of claims 1 to 7 is added to water, and the hair is immersed in the water during carbon dioxide gas foaming. Step (II): Hair is immersed in water. The step of immersing the hair in the water and then adding the solid hair cleansing agent according to any one of claims 1 to 7 to the water.
  9.  前記固形毛髪洗浄剤を添加した水のpHが6.0以下である、請求項8に記載の毛髪の洗浄方法。 The hair washing method according to claim 8, wherein the pH of the water to which the solid hair washing agent is added is 6.0 or less.
PCT/JP2021/036785 2020-10-21 2021-10-05 Solid shampoo WO2022085432A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5645996A (en) * 1979-09-25 1981-04-25 Arimino Kagaku Kk Quick soluble solid shampoo
JPS62294604A (en) * 1986-06-13 1987-12-22 Mitsui Toatsu Chem Inc Novel hair detergent composition
JPS63135317A (en) * 1986-11-26 1988-06-07 Mitsui Toatsu Chem Inc Novel hair washing agent composition
JPH05247495A (en) * 1990-12-28 1993-09-24 Nitta Gelatin Inc Solid detergent
WO2020210184A1 (en) * 2019-04-11 2020-10-15 Basf Se Cleansing tablet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5645996A (en) * 1979-09-25 1981-04-25 Arimino Kagaku Kk Quick soluble solid shampoo
JPS62294604A (en) * 1986-06-13 1987-12-22 Mitsui Toatsu Chem Inc Novel hair detergent composition
JPS63135317A (en) * 1986-11-26 1988-06-07 Mitsui Toatsu Chem Inc Novel hair washing agent composition
JPH05247495A (en) * 1990-12-28 1993-09-24 Nitta Gelatin Inc Solid detergent
WO2020210184A1 (en) * 2019-04-11 2020-10-15 Basf Se Cleansing tablet

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