Detergent composition for former

Abstract

The present invention relates to a detergent composition for foamers which comprises (A) an anionic surfactant, (B) a nonionic surfactant which has an HLB value of 7 to 11 and is liquid at 25°C, (C) an amphoteric surfactant, (D) polyalcohol, (E) oil, and (F) water, wherein the ratio [(A) / (B)] of the content of component (A) to the content of component (B) is 0.4 to 3.8 in mass ratio, the ratio [(B) / (E)] of the content of component (B) to the content of component (E) is 0.4 to 6 in mass ratio, the viscosity at 25°C is 500 mPa∙s or less, and the pH at 25°C is 3 to 6.　The present invention is capable of providing a detergent composition for foamers which has excellent makeup cosmetic cleansing power and foamability and has excellent properties for being discharged from a foamer container. The present invention is also capable of providing a detergent composition for foamers which can suitably use acyl acidic amino acid or a salt thereof as a surfactant.

Description

Technical Field

[0001] The present invention relates to a cleaning composition for a former suitable for use in a former container.

Background Art

[0002] In order to remove dirt such as sebum and dust on the face and makeup cosmetics and obtain healthy skin, a cleaning composition for washing the face is used. Since makeup cosmetics contain oily components, powders, and furthermore polymer compounds, it is difficult to wash them off with ordinary cleaning compositions. Therefore, in cleaning compositions for removing and cleaning makeup cosmetics, nonionic surfactants and oily components are often used as main components. However, nonionic surfactants are poor in foam volume and foam quality, and it has been very difficult to obtain a comfortable feeling due to rich foaming and a comfortable use feeling that consumers demand by using nonionic surfactants. In addition, when an oily component is used in a cleaning composition to improve the detergency of makeup cosmetics, there is a problem that the foam performance further deteriorates. In addition, although anionic surfactants are also widely used as foaming surfactants in body and facial cleansing compositions, they have poor solubilizing ability for oily components, so their ability to remove makeup cosmetics is low, and furthermore, when used in a composition containing an oily component, there is a problem of reducing the solution stability. Furthermore, in recent years, a type of cleaning agent that is discharged as foam from a former container has been in the spotlight due to its convenience. However, in order to discharge the cleaning composition as foam, the physical properties of the cleaning composition had to be controlled so that clogging did not occur in the nozzle of the former container.

[0003] In view of the above problems, attempts have been made to improve the foaming property, foam quality, cleansing power, and foam discharge property from a former container of the cleaning composition. For example, as a makeup remover composition that can be discharged as foamy foam by a non-aerosol pump-type foam dispenser, a composition containing linear fatty acid soap, acyl glycinate, acyl arginine, water, and polyhydric alcohol in specific amounts respectively has been proposed (Patent Document 1). The makeup remover composition described in Patent Document 1 contains almost no water-insoluble skin softener and is a highly transparent aqueous cleaning composition. However, since it does not contain an oily component, the cleansing power for makeup cosmetics may be insufficient.

[0004] As a cleaning composition aiming to improve both cleansing power and foaming property, a cleaning composition containing a nonionic surfactant having a branched alkyl group or two or more alkyl groups or alkenyl groups and an HLB value of 3 to 12, an oil agent in a liquid state at room temperature, an anionic surfactant having an ethylene oxide chain, a polyhydric alcohol having a specific IOB value, and an inorganic salt (Patent Document 2), and a foaming composition in the form of a nanoemulsion or microemulsion containing an oil agent, a polyglyceryl fatty acid ester having an HLB value of 8 to 13, an alkyl(poly)glycoside, an amphoteric surfactant, and water (Patent Document 3) have been proposed. The cleaning composition described in Patent Document 2 has a cleansing power capable of sufficiently removing oily mascara and is a transparent composition. However, it is characterized by foaming during rinsing, and it cannot be said that it is premised on use in a former container. The foaming composition described in Patent Document 3 is a composition in the form of a nanoemulsion or a microemulsion that is a thermodynamically stable isotropic single liquid phase, and is a transparent or slightly translucent composition. However, its pH has been shown to be 6.5 to 7.0 (Examples). The present inventor has found that in a cleaning composition for a former containing an oil agent and an anionic surfactant as the main surfactant, when the pH of the composition exceeds 6, its transparency decreases and the possibility of nozzle clogging increases.

[0005] On the one hand, acyl acidic amino acids such as N-acylglutamate or salts thereof have a mild effect on the skin and hair, are excellent in biodegradability, and have a foaming action, a cleaning action, a penetration action, an emulsifying action, an antistatic action, and a bacteriostatic action. Therefore, they are anionic surfactants that are desired to be used in compositions for cleaning makeup cosmetics. However, as described above, in order to be stably used in a former container, it is necessary to control the pH of the cleaning composition to 6 or less. In a cleaning composition containing an acyl acidic amino acid or a salt thereof, there is a problem that the uniformity of the composition decreases at a low pH, making it difficult to use in a former container. Therefore, there is a desire to develop a cleaning composition suitable for use in a former container and capable of using an acyl acidic amino acid or a salt thereof.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0007] Therefore, an object of the present invention is to provide a former cleaning composition that is excellent in the cleansing power and foaming property of makeup cosmetics and has excellent dischargeability from a former container. Furthermore, an object of the present invention is to provide a former cleaning composition that can suitably use an acyl acidic amino acid or a salt thereof as a surfactant.

Means for Solving the Problems

[0008] As a result of intensive studies to solve the above problems, the present inventors have found that by containing (A) an anionic surfactant, (B) a specific nonionic surfactant, (C) an amphoteric surfactant, (D) a polyhydric alcohol, (E) an oil, and (F) water, setting the content ratio [(A) / (B)] (mass ratio) of component (A) and component (B), and the content ratio [(B) / (E)] (mass ratio) of component (B) and component (E) within specific ranges, and further adjusting the viscosity and pH of the detergent composition within specific ranges, the above problems can be solved, and thus the present invention has been completed.

[0009] That is, the present invention relates to the following. [1] A detergent composition for a former, containing (A) an anionic surfactant, (B) a nonionic surfactant having an HLB value of 7 to 11 and being liquid at 25°C, (C) an amphoteric surfactant, (D) a polyhydric alcohol, (E) an oil, and (F) water, wherein the ratio [(A) / (B)] of the content of component (A) to the content of component (B) is 0.4 to 3.8 in terms of mass ratio, the ratio [(B) / (E)] of the content of component (B) to the content of component (E) is 0.4 to 6 in terms of mass ratio, the viscosity at 25°C is 500 mPa·s or less, and the pH at 25°C is 3 to 6. [2] The detergent composition according to [1], wherein (A) the anionic surfactant is an acyl acidic amino acid or a salt thereof. [3] The detergent composition according to [1] or [2], wherein (B) the nonionic surfactant having an HLB value of 7 to 11 and being liquid at 25°C is a polyoxyethylene glycerin fatty acid ester. [4] The detergent composition according to any one of [1] to [3], wherein (C) the amphoteric surfactant is one or more selected from the group consisting of a sulfobetaine type amphoteric surfactant and an imidazoline type amphoteric surfactant. [5] The detergent composition according to any one of [1] to [4], wherein (E) the oil is one or more selected from the group consisting of a hydrocarbon oil, an ester oil, and glyceryl tri(saturated fatty acid) and is liquid at 25°C. [6] The cleaning composition according to any one of [1] to [5], wherein the oil content is 0.01% by mass to 6% by mass. [7] The cleaning composition according to any one of [1] to [6], wherein the viscosity at 25 °C is 100 mPa·s or less. [8] The cleaning composition according to any one of [1] to [7], wherein the transmittance at a measurement wavelength of 430 nm is 70% or more. [9] The cleaning composition, wherein the cleaning composition according to any one of [1] to [8] is filled in a former container.

Effect of the Invention

[0010] According to the present invention, it is possible to provide a cleaning composition for a former that is excellent in the cleansing power and foaming property of makeup cosmetics and excellent in the dischargeability from a former container. Furthermore, according to the present invention, it is possible to provide a cleaning composition for a former that stably contains an acyl acidic amino acid or a salt thereof, has a mild action on the skin, and is excellent in biodegradability, bacteriostatic action, etc.

Embodiments for Carrying Out the Invention

[0011] The cleaning composition for a former of the present invention (hereinafter also referred to as "the composition of the present invention" in this specification) has the following characteristics (i) to (iii). (i) It contains (A) an anionic surfactant, (B) a nonionic surfactant having an HLB value of 7 to 11 and being liquid at 25 °C, (C) an amphoteric surfactant, (D) a polyhydric alcohol, (E) an oil, and (F) water. (ii) The content ratio [(A) / (B)] of component (A) and component (B) is 0.4 to 3.8 in terms of mass ratio, and the content ratio [(B) / (E)] of component (B) and component (E) is 0.4 to 6 in terms of mass ratio. (iii) The viscosity at 25 °C is 500 mPa·s or less, and the pH at 25 °C is 3 to 6.

[0012] In this specification, the "cleaning composition for a former" refers to a cleaning composition suitable for filling and providing in a former container described later.

[0013] The anionic surfactant contained as component (A) in the composition of the present invention is a surfactant whose hydrophilic group ionizes into an anion in an aqueous solution, and it can be used without particular limitation as long as the characteristics of the present invention are not impaired. For example, carboxylates such as fatty acid soaps, polyoxyethylene alkyl ether carboxylates, acyl lactates, N-acyl amino acid salts; sulfonates such as alkane sulfonates, α-olefin sulfonates, α-sulfonated fatty acid methyl ester salts; sulfuric acid ester salts such as alkyl sulfate ester salts, secondary alkyl sulfate ester salts, alkyl ether sulfate ester salts, monoacyl glycerin sulfate ester salts; phosphate ester salts such as alkyl phosphate ester salts, polyoxyethylene alkyl ether phosphate ester salts, etc. are exemplified, and one or more of them can be used.

[0014] From the viewpoints of having a mild action on the skin, high safety, and excellent biodegradability, as the anionic surfactant, N-acyl amino acid salts such as N-acyl sarcosine salts, N-acyl methylalanine salts, N-acyl acidic amino acid salts (N-acyl glutamic acid salts, N-acyl aspartic acid salts, etc.) are preferably used. As described above, they have good foaming action, cleaning action, penetration action, emulsifying action, antistatic action, and antibacterial action. In particular, since the action on the skin is very mild, N-acyl acidic amino acid salts are more preferably used.

[0015] Examples of the N-acyl acidic amino acid salts include N-acyl aspartic acid salts and N-acyl glutamic acid salts. N-acyl glutamic acid salts are preferred, and N-acyl-L-glutamic acid salts are more preferred. Moreover, as the acyl group, those having an acyl group derived from a saturated or unsaturated fatty acid having 8 to 22 carbon atoms are preferred. Examples of such acyl groups include octanoyl (capryloyl), 2-ethylhexanoyl, nonanoyl, decanoyl (caprinoyl), undecanoyl, undecenoyl, dodecanoyl (lauroyl), tetradecanoyl (myristoyl), hexadecanoyl (palmitoyl), octadecanoyl (stearoyl), 2-heptylundecanoyl (isostearoyl), (Z)-9-octadecenoyl (oleoyl), (9Z,12Z)-octadeca-9,12-dienoic (linoleoyl), (9Z,12Z,15Z)-octadeca-9,12,15-trienoic (α-linolenoyl), icosanoyl (arachidoyl), docosanoyl (behenoyl), etc. Also, acyl groups (such as coconut oil fatty acid acyl, palm kernel oil fatty acid acyl, etc.) derived from mixed fatty acids derived from natural oils and fats such as coconut oil and palm kernel oil are also preferred. For the purpose of the present invention, those having an acyl group having 8 to 18 carbon atoms are more preferred, and those having an acyl group having 10 to 16 carbon atoms are even more preferably used.

[0016] As the salt, alkali metal salts such as sodium salt and potassium salt; alkanolamine salts such as triethanolamine salt, and basic amino acid salts such as lysine salt, arginine salt, and histidine salt are preferably used.

[0017] Specifically, sodium N-lauroyl-L-aspartate, potassium N-lauroyl-L-aspartate, triethanolamine N-lauroyl-L-aspartate, disodium N-lauroyl-L-aspartate, dipotassium N-lauroyl-L-aspartate, sodium N-myristoyl-L-aspartate, potassium N-myristoyl-L-aspartate, triethanolamine N-myristoyl-L-aspartate, disodium N-myristoyl-L-aspartate, dipotassium N-myristoyl-L-aspartate, sodium N-palmitoyl-L-aspartate, potassium N-palmitoyl-L-aspartate, triethanolamine N-palmitoyl-L-aspartate, disodium N-palmitoyl-L-aspartate, dipotassium N-palmitoyl-L-aspartate, sodium N-stearoyl-L-aspartate, potassium N-stearoyl-L-aspartate, triethanolamine N-stearoyl-L-aspartate, disodium N-stearoyl-L-aspartate, dipotassium N-stearoyl-L-aspartate, sodium N-coconut oil fatty acyl-L-aspartate, potassium N-coconut oil fatty acyl-L-aspartate, triethanolamine N-coconut oil fatty acyl-L-aspartate, disodium N-coconut oil fatty acyl-L-aspartate, dipotassium N-coconut oil fatty acyl-L-aspartate, sodium N-palm kernel oil fatty acyl-L-aspartate, potassium N-palm kernel oil fatty acyl-L-aspartate, triethanolamine N-palm kernel oil fatty acyl-L-aspartate, disodium N-palm kernel oil fatty acyl-L-aspartate, dipotassium N-palm kernel oil fatty acyl-L-aspartate, sodium N-lauroyl-L-glutamate, potassium N-lauroyl-L-glutamate, triethanolamine N-lauroyl-L-glutamate, disodium N-lauroyl-L-glutamate, dipotassium N-lauroyl-L-glutamate, sodium N-myristoyl-L-glutamate, potassium N-myristoyl-L-glutamate, triethanolamine N-myristoyl-L-glutamate,Sodium N-myristoyl-L-glutamate, potassium N-myristoyl-L-glutamate, sodium N-palmitoyl-L-glutamate, potassium N-palmitoyl-L-glutamate, triethanolamine N-palmitoyl-L-glutamate, sodium N-palmitoyl-L-glutamate disodium, potassium N-palmitoyl-L-glutamate, sodium N-stearoyl-L-glutamate, potassium N-stearoyl-L-glutamate, triethanolamine N-stearoyl-L-glutamate, disodium N-stearoyl-L-glutamate, dipotassium N-stearoyl-L-glutamate, sodium N-coconut oil fatty acid acyl-L-glutamate, potassium N-coconut oil fatty acid acyl-L-glutamate, triethanolamine N-coconut oil fatty acid acyl-L-glutamate, disodium N-coconut oil fatty acid acyl-L-glutamate, dipotassium N-coconut oil fatty acid acyl-L-glutamate, sodium N-palm kernel oil fatty acid acyl-L-glutamate, potassium N-palm kernel oil fatty acid acyl-L-glutamate, triethanolamine N-palm kernel oil fatty acid acyl-L-glutamate, disodium N-palm kernel oil fatty acid acyl-L-glutamate, dipotassium N-palm kernel oil fatty acid acyl-L-glutamate, etc. are exemplified, and sodium N-lauroyl-L-glutamate, potassium N-lauroyl-L-glutamate, triethanolamine N-lauroyl-L-glutamate, disodium N-lauroyl-L-glutamate, dipotassium N-lauroyl-L-glutamate, sodium N-coconut oil fatty acid acyl-L-glutamate, potassium N-coconut oil fatty acid acyl-L-glutamate, triethanolamine N-coconut oil fatty acid acyl-L-glutamate, disodium N-coconut oil fatty acid acyl-L-glutamate, dipotassium N-coconut oil fatty acid acyl-L-glutamate, etc. are particularly preferably used.

[0018] In the present invention, the above-mentioned anionic surfactants can each be produced and used by a production method known per se, but commercially available products provided by each company can be used.

[0019] The content of component (A) in the composition of the present invention is usually 1% by mass to 25% by mass, preferably 1% by mass to 20% by mass, and more preferably 1% by mass to 15% by mass.

[0020] In the composition of the present invention, as component (B), a nonionic surfactant having an HLB (Hydrophilic-Lipophilic Balance) value of 7 to 11 and being liquid at 25°C is contained. Examples of such nonionic surfactants include polyglycerol fatty acid esters such as hexaglyceryl monomyristate, decaglyceryl diisostearate, and decaglyceryl trioleate; polyoxyethylene alkyl ethers such as polyoxyethylene (2 E.O.) lauryl ether, polyoxyethylene (3 E.O.) alkyl (12 - 14) ether, polyoxyethylene (4.2 E.O.) lauryl ether, and polyoxyethylene (5 E.O.) alkyl (12 - 14) ether; polyoxyethylene alkenyl ethers such as polyoxyethylene (2 E.O.) oleyl ether and polyoxyethylene (7 E.O.) oleyl ether; polyoxyethylene polyoxypropylene alkyl ethers such as polyoxyethylene (1 E.O.) polyoxypropylene (4 P.O.) cetyl ether; polyoxyethylene sorbitol fatty acid esters such as polyoxyethylene (6 E.O.) sorbitol tetraoleate and polyoxyethylene (30 E.O.) sorbitol tetraoleate; polyethylene glycol fatty acid esters such as polyethylene glycol (6 E.O.) monooleate and polyethylene glycol (10 E.O.) monooleate; polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene (6 E.O.) sorbitan monostearate, polyoxyethylene (6 E.O.) sorbitan monooleate, and polyoxyethylene (20 E.O.) sorbitan trioleate; polyoxyethylene hydrogenated castor oil such as polyoxyethylene (20 E.O.) hydrogenated castor oil and polyoxyethylene (30 E.O.) hydrogenated castor oil; polyoxyethylene glycerol fatty acid esters such as polyoxyethylene (20 E.O.) glyceryl triisostearate and polyoxyethylene (40 E.O.) glyceryl triisostearate. One or more of these can be used. For the purpose of the present invention, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerol fatty acid esters, etc. are preferably used, and polyoxyethylene glycerol fatty acid esters are particularly preferably used.

[0021] In the present invention, the above-mentioned nonionic surfactants can each be produced by a known production method and used, but commercially available products provided by each company can also be used.

[0022] The content of component (B) in the composition of the present invention is usually 1% by mass to 25% by mass, preferably 1% by mass to 20% by mass, and more preferably 1% by mass to 15% by mass.

[0023] The amphoteric surfactant contained as component (C) in the composition of the present invention can be used without particular limitation as long as it is a surfactant having both an anionic group and a cationic group in the molecule, without impairing the characteristics of the present invention. For example, glycine-type amphoteric surfactants such as alkyl glycine salts and alkyl carboxymethyl glycine salts; imidazoline-type amphoteric surfactants such as N-acylaminoethyl-N-2-hydroxyethyl glycine salts (sodium N-lauroyl-N'-carboxymethyl-N'-hydroxyethyl ethylenediamine, sodium N-coconut fatty acid acyl-N'-carboxymethyl-N'-hydroxyethyl ethylenediamine, etc.); hydroxyalkyl (C12-14) hydroxyethyl sarcosine; aminopropionic acid-type amphoteric surfactants such as alkyl aminopropionate, alkyliminodipropionate, N-acylaminoethyl-N-2-hydroxyethyl propionate (sodium N-coconut fatty acid acyl-N'-carboxyethyl-N'-hydroxyethyl ethylenediamine, etc.); aminoacetic acid betaine-type amphoteric surfactants such as alkyldimethylaminoacetic acid betaine (lauryldimethylaminoacetic acid betaine, coconut oil alkyldimethylaminoacetic acid betaine, etc.), fatty acid amidopropyldimethylaminoacetic acid betaine (lauric acid amidopropyldimethylaminoacetic acid betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, palm kernel oil fatty acid amidopropyldimethylaminoacetic acid betaine, etc.), alkyldihydroxyethylaminoacetic acid betaine; sulfobetaine-type amphoteric surfactants such as N-alkyl-N,N-dimethylammonium-N-propyl sulfonate, N-alkyl-N,N-dimethylammonium-N-(2-hydroxypropyl) sulfonate, fatty acid amidopropyl-N,N-dimethylammonium-N-(2-hydroxypropyl) sulfonate (lauric acid amidopropyl-N,N-dimethylammonium-N-(2-hydroxypropyl) sulfonate, etc.); amine oxide-type amphoteric surfactants such as alkyldimethylamine oxide (lauryldimethylamine oxide, etc.); phosphoric acid-type amphoteric surfactants such as phosphatidylcholine, etc. can be mentioned, and one or more of them can be used. For the purpose of the present invention, sulfobetaine-type amphoteric surfactants and imidazoline-type amphoteric surfactants are preferably used, and sodium N-coconut oil fatty acyl-N'-carboxymethyl-N'-hydroxyethyl ethylenediamine, sodium N-lauroyl-N'-carboxymethyl-N'-hydroxyethyl ethylenediamine, lauric acid amidopropyl-N,N-dimethylammonium-N-(2-hydroxypropyl) sulfonate, coconut oil fatty acid amidopropyl-N,N-dimethylammonium-N-(2-hydroxypropyl) sulfonate, etc. are more preferably used.

[0024] In the present invention, the above amphoteric surfactants can be produced by production methods known per se and used, but commercially available products provided by each company can be used.

[0025] The content of component (C) in the composition of the present invention is usually 1% by mass to 25% by mass, preferably 1% by mass to 20% by mass, and more preferably 3% by mass to 20% by mass.

[0026] In the composition of the present invention, the polyhydric alcohol contained as component (D) can be used without particular limitation as long as it is an alcohol having two or more hydroxyl groups in the molecule, and examples include diols such as propylene glycol, dipropylene glycol, 1,3-butylene glycol, 1,3-propanediol, pentylene glycol, hexylene glycol, polyethylene glycol; triols such as glycerin; sugar alcohols such as xylitol, sorbitol, maltitol, etc. These can be used alone or in combination of two or more. For the purpose of the present invention, diols or triols having 3 to 6 carbon atoms are preferably used, and propylene glycol, dipropylene glycol, 1,3-butylene glycol, glycerin, etc. are more preferably used.

[0027] In the present invention, the above-mentioned polyhydric alcohols can be each produced by a production method known per se and used, but commercially available products provided by each company can be utilized.

[0028] The content of component (D) in the composition of the present invention is usually 1% by mass to 20% by mass, preferably 1% by mass to 15% by mass, and more preferably 1% by mass to 12% by mass.

[0029] The oil contained as component (E) in the composition of the present invention is a hydrophobic substance collected from animals, plants, minerals, etc. and phase-separates from water, and those that are liquid at 25°C are preferably used. For example, hydrocarbon oils such as liquid paraffin, liquid isoparaffin, light liquid isoparaffin, squalane; ester oils such as cetyl 2-ethylhexanoate, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, octyldodecyl myristate, isopropyl isostearate, neopentyl glycol dicaprylate, distearyl malate, isopropyl N-lauroylsarcosinate, di(phytosteryl·2-octyldodecyl) N-lauroyl-L-glutamate, di(phytosteryl·behenyl·2-octyldodecyl) N-lauroyl-L-glutamate; tri(saturated fatty acid) glyceryls such as glyceryl tri(2-ethylhexanoate), glyceryl tri(caprylic acid·capric acid), glyceryl triisostearate; vegetable oils such as almond oil, avocado oil, olive oil, rice bran oil, soybean oil, evening primrose oil, rapeseed oil, sunflower oil, grape seed oil, macadamia nut oil; vegetable waxes such as jojoba oil; cyclic silicone oils such as decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane; silicone oils such as dimethylpolysiloxane, methylphenylpolysiloxane, etc. These can be used alone or in combination of two or more. From the viewpoints of cleansing power for makeup cosmetics, miscibility in the composition, ease of availability, etc., hydrocarbon oils, ester oils, and glyceryl tri(saturated fatty acid) that are liquid at 25°C are more preferably used, and isopropyl N-lauroylsarcosinate, isopropyl myristate, glyceryl tri(caprylic acid·capric acid), etc. are even more preferably used.

[0030] In the present invention, the above-mentioned oils can be respectively collected or extracted from animals, plants, minerals, etc. and purified, or manufactured by a known production method and used, but commercially available products provided by each company can be utilized.

[0031] The content of component (E) in the composition of the present invention is usually 0.01% by mass to 10% by mass, preferably 0.01% by mass to 6% by mass, and more preferably 0.03% by mass to 6% by mass.

[0032] The composition of the present invention contains water as component (F). Examples of water include purified water such as distilled water and deionized water, tap water, industrial water, etc., and water suitable for the production of cosmetics, quasi-drugs, pharmaceuticals, etc. is used. The water content is set as an amount based on the total amount of the composition of the present invention being 100% by mass.

[0033] In the composition of the present invention, the content ratio [(A) / (B)] of the above-mentioned component (A) and the above-mentioned component (B) is 0.4 to 3.8 in terms of mass ratio, preferably 0.4 to 3.0, and more preferably 0.4 to 2.5. Also, the content ratio [(B) / (E)] of the above-mentioned component (B) and the above-mentioned component (E) is 0.4 to 6 in terms of mass ratio, preferably 0.4 to 5, and more preferably 0.4 to 2. When the content ratio [(A) / (B)] of component (A) and component (B) is less than 0.4 or exceeds 3.8, or when the content ratio [(B) / (E)] of component (B) and component (E) is less than 0.4 or exceeds 6, the uniformity of the composition tends to decrease, and there is a possibility of clogging in the nozzle of the former container, which is not preferable.

[0034] Furthermore, in order to improve the dischargeability from the former container, the composition of the present invention is preferably a liquid with low viscosity. In the composition of the present invention, the viscosity at 25 °C is 500 mPa·s or less, preferably 200 mPa·s or less, more preferably 100 mPa·s or less. When the viscosity of the composition of the present invention at 25 °C exceeds 500 mPa·s, it becomes difficult to discharge from the former container, and the usability decreases. The viscosity at 25 °C can be obtained by measuring with a B-type rotational viscometer using rotor No. 1 or No. 2, setting the rotation speed to 6 rpm, 12 rpm or 60 rpm, and measuring at 25 °C.

[0035] Also, the pH of the composition of the present invention at 25 °C is 3 to 6, preferably 3.2 to 5.8, more preferably 3.2 to 5.0, still more preferably 3.5 to 4.8, and even more preferably 3.8 to 4.8. If the pH of the cleaning composition is less than 3, there is a risk of skin irritation during cleaning. If the pH of the cleaning composition exceeds 6, the composition becomes non-uniform, the appearance deteriorates, clogging occurs in the nozzle of the former container, and the dischargeability may decrease. The pH measurement can be performed by the glass electrode method.

[0036] The composition of the present invention exhibits a uniform and good appearance, and preferably shows transparency. The transmittance of the composition of the present invention at 430 nm is preferably 70% or more, more preferably 80% or more.

[0037] In addition to components (A) to (F), the composition of the present invention may contain general additives used in cosmetics, quasi-drugs, pharmaceuticals, etc., as long as the characteristics of the present invention are not impaired. Such additives include lower alcohols such as ethanol and isopropanol; surfactants other than components (A) to (C); humectants such as sodium pyrrolidone carboxylate; thickening polysaccharides such as xanthan gum; pH adjusters such as citric acid, malic acid, potassium hydroxide, sodium hydroxide, and sodium carbonate; preservatives such as paraoxybenzoic acid esters and phenoxyethanol; chelating agents such as sodium ethylenediaminetetraacetate; antioxidants such as vitamin E; plant extracts such as aloe extract and tea extract; sebum inhibitors; anti-inflammatory agents; pigments; fragrances, and the like. These additives may be contained, if necessary, singly or in combination of two or more. Also, the content of these additives can be set according to the amount usually contained in the detergent composition.

[0038] The composition of the present invention can be produced according to a conventional method. For example, component (A), component (C), component (D) and, if necessary, other hydrophilic additives are sequentially added to and mixed with component (F), and if necessary, a pH adjuster is added to adjust the pH to obtain an aqueous phase component. This aqueous phase component is gradually added with stirring to an oil phase component prepared by mixing component (B), component (E) and, if necessary, other lipophilic additives, and uniformly mixed to prepare the composition.

[0039] The composition of the present invention is excellent in the cleansing power and foaming property of makeup cosmetics, and is also excellent in the dischargeability from the former container. Therefore, the composition of the present invention is suitable for filling in a former container and using. A former container is a non-gas type foam discharge container that mixes a detergent composition and air at a predetermined ratio inside the container and discharges the mixture in a foamy form through one or more porous bodies or a plastic or metal mesh having a certain pore diameter built in the nozzle head. As non-gas type foam discharging containers, there may be mentioned a squeeze former container capable of discharging foam by squeezing the bottle body by hand, a pump former container capable of discharging foam by pushing down the nozzle part, etc., and plastic containers such as high-density polyethylene, polypropylene, polyethylene terephthalate are preferably used. As such former containers, containers manufactured by Yamato Can Co., Ltd., Yoshino Kogyosho Co., Ltd. etc. can be used.

[0040] Therefore, the present invention also provides a cleaning agent composition in a form filled in a former container. As the former container, either of the above-mentioned squeeze former container and pump former container can be used. Regarding the cleaning agent composition filled in the former container, it is as described above for the composition of the present invention. The filling amount of the cleaning agent composition with respect to the former container is preferably 50% to 90% of the volume of the former container, and more preferably 60% to 80%.

[0041] In the cleaning agent composition of the above form of the present invention, the occurrence of nozzle clogging is suppressed, and the cleaning agent composition can be discharged from the former container as good and stable foam.

Examples

[0042] Hereinafter, the present invention will be described in more detail with reference to examples.

[0043] According to the formulations shown in Tables 1 to 4, the cleaning agent compositions of the examples and comparative examples were prepared by the methods shown below. <Manufacturing method> The components (A), (C), (D) and other components in the table were added to the component (F) and uniformly mixed, and the pH was adjusted to obtain an aqueous phase component. The pH in the table indicates the measured value by the glass electrode method in a room set at 25°C. On the other hand, the components (B) and (E) in the table were uniformly mixed to obtain an oil phase component. The aqueous phase component was added to the oil phase component with stirring and mixed to make it uniform.

[0044] For each of the prepared detergent compositions of the examples and comparative examples, the appearance and cleansing power of the composition were evaluated as follows, and the viscosity was measured in a room set at 25°C.

[0045] (1) Evaluation of appearance Using a UV-visible near-infrared spectrophotometer V-570 (manufactured by JASCO Corporation), each detergent composition of the examples and comparative examples was filled into a 1 cm square disposable cell, and the transmittance at a measurement wavelength of 430 nm was measured. The appearance (transparency of the composition) was evaluated according to the following evaluation criteria. <Evaluation criteria> Transmittance = 80% or more: A Transmittance = 30% or more and less than 80%: B Transmittance < 30%: C

[0046] (2) Evaluation of cleansing power A commercially available waterproof mascara was applied to a white bioskin plate (manufactured by View Rakks Co., Ltd.) in an area of about 1 cm square. 2 g of each detergent composition of the examples and comparative examples was dropped onto the center of a commercially available cotton, and the cotton was folded into four, and used for the operation of wiping the waterproof mascara on the bioskin plate. The operation of wiping the mascara was performed 10 times in a certain direction with a force of about 200 g using an electronic balance. Then, the surface of the folded cotton was changed, and the wiping operation in a certain direction was performed 10 more times. Further, the surface of the cotton was changed, and the wiping operation was performed in the same manner. The cleansing power was evaluated according to the following evaluation criteria by image evaluation of the area where the waterproof mascara was applied. <Evaluation criteria> 90% or more of the mascara was removed: A 50% or more and less than 90% of the mascara was removed: B 20% or more and less than 50% of the mascara was removed: C Less than 20% of the mascara was removed: D

[0047] (3) Measurement of viscosity at 25°C Using a B-type viscometer (manufactured by Tokyo Keiki Co., Ltd.), Rotor No. 1 or No. 2 was used according to the viscosity range of the cleaning agent composition to be measured, and the measurement was carried out at a rotational speed of 6 rpm, 12 rpm, or 60 rpm. Each cleaning agent composition of the examples and comparative examples was filled in a 100 mL plastic container and used for the measurement.

[0048] (4) Comprehensive evaluation When the evaluation of A was obtained in both the evaluation of the appearance and the evaluation of the cleansing power, the comprehensive evaluation was set as A. When the evaluation of A was obtained in either one, the comprehensive evaluation was set as B. When the evaluation of A was not obtained in either case, the comprehensive evaluation was set as C.

[0049] The evaluation results and measurement results of (1) to (4) were shown in Tables 1 to 4 respectively. Based on the evaluation results and measurement results of (1) to (4), the effects of pH, viscosity, content ratio of component (A) to component (B) [(A) / (B)], content ratio of component (B) to component (E) [(B) / (E)], and types of components (A) to (E) on the physical properties and functions of the cleaning agent composition were examined.

[0050] [Examination of the influence of the pH of the cleaning agent composition] Table 1 shows the composition and evaluation results of the cleaning agent compositions of Examples 1 to 5 and Comparative Example 1 prepared by adjusting the pH of the composition to different pH values. In the table, the content of sodium N-coconut oil fatty acyl-L-glutamate indicates the net content of this component.

[0051]

Table 1

[0052] As shown in Table 1, each cleaning agent composition of Examples 1 to 3 with a pH of 3.5 to 5.0 exhibited a good appearance with high or slightly high transparency and showed good cleansing power. In each cleaning agent composition of Examples 4 and 5 with a pH of 5.5 and 6.0 respectively, a decrease in the transparency of the appearance was observed, but the cleansing power was good. On the other hand, in the cleaning agent composition of Comparative Example 1 with a pH of 7.0, a decrease in the transparency of the appearance and a decrease in the cleansing power were also observed. From the above evaluation results, it was suggested that from the viewpoints of the uniformity and the cleansing power of the cleaning agent composition, the pH of the composition at 25°C should be 6 or less.

[0053] [Examination of the influence of the type of component (C) and the viscosity at 25°C] Table 2 shows the compositions and evaluation results of the cleaning agent compositions of Examples 1, 3, 6, and 7 and Comparative Examples 2 and 3 prepared using different types of amphoteric surfactants as component (C). In the table, the content of sodium N-cocoacyl-L-glutamate indicates the net content of this component. Also, the blanks in the table indicate that the component is not contained.

[0054]

Table 2

[0055] As shown in Table 2, in each of the cleaning agent compositions of Examples 1 and 3 containing a sulfobetaine-type amphoteric surfactant as component (C), good appearances with high or slightly high transparency were obtained, and it was confirmed that the cleansing power was also good. In the cleaning agent composition of Example 6 containing an imidazoline-type amphoteric surfactant as component (C) and having a pH of 5.0, and in the cleaning agent composition of Example 7 containing alkyl dimethylaminoacetic acid betaine as component (C) and having a pH of 4.5, high transparency was obtained, but a slight decrease in the cleansing power was observed. On the other hand, in each of the cleaning agent compositions of Comparative Examples 2 and 3 containing fatty acid amide propyldimethylaminoacetic acid betaine as component (C), the viscosity at 25°C exceeded 500 mPa·s, showing a high viscosity not suitable for use in a former container, and a decrease in the transparency of the appearance and the cleansing power was observed.

[0056] [Examination of the Influence of the Content Ratio of Component (A) to Component (B) and the Content Ratio of Component (B) to Component (E)] For each of the detergent compositions of Examples 1, 8 to 15, and Comparative Examples 4 to 6 prepared by changing the content ratio of component (A) to component (B) [(A) / (B)] and the content ratio of component (B) to component (E) [(B) / (E)], the composition and evaluation results are shown in Table 3. In the table, the content of sodium N-coconut oil fatty acyl-L-glutamate indicates the net content of this component.

[0057] [Table 3]

[0058] As shown in Table 3, for each of the detergent compositions of Examples 1, 8 to 15, where the content ratio of component (A) to component (B) [(A) / (B)] is 0.50 to 3.5 and the content ratio of component (B) to component (E) [(B) / (E)] is 0.50 to 3.00, an overall evaluation of A or B was obtained. On the other hand, for the detergent composition of Comparative Example 6 where the content ratio of component (A) to component (B) [(A) / (B)] is less than 0.4, the detergent composition of Comparative Example 5 where [(A) / (B)] is less than 0.4 and the content ratio of component (B) to component (E) [(B) / (E)] exceeds 6, and the detergent composition of Comparative Example 4 where [(A) / (B)] exceeds 3.8, a decrease in the transparency of the appearance was observed, and the overall evaluation was C.

[0059] [Examination of the Influence of the Types of Components (A) to (E)] For each of the detergent compositions of Examples 1, 16 to 29, and Comparative Example 7 prepared by changing the type of anionic surfactant as component (A), the type and HLB value of the nonionic surfactant as component (B), the type of amphoteric surfactant as component (C), the type of polyhydric alcohol as component (D), the type of oil as component (E), and the type of other components, respectively, the composition and evaluation results are shown in Table 4. In the table, the respective contents of sodium N-coconut oil fatty acyl-L-glutamate, sodium α-olefin (C14-16) sulfonate, and sodium pyrrolidonecarboxylate indicate the net contents. Also, the blanks in the table indicate that the component is not contained.

[0060]

Table 4

[0061] As shown in Table 4, in each of the detergent compositions of Examples 1 and 16 to 29, an overall evaluation of A or B was obtained. In the detergent compositions of Example 22 containing jojoba oil, which is a vegetable wax, and Example 23 containing macadamia nut oil, which is a vegetable oil, as component (E), a decrease in the transparency of the appearance was observed. Also, in the detergent composition of Example 21 containing liquid paraffin, which is a hydrocarbon oil, as component (E), a decrease in the cleansing power was observed. From these results, it was suggested that it is preferable to use an ester oil and tri(saturated fatty acid) glyceryl as component (E) from the viewpoints of the transparency and cleansing power of the detergent composition. In the detergent composition of Comparative Example 7 containing a nonionic surfactant with an HLB value of 13 as component (B), a decrease in the transparency of the appearance and a decrease in the cleansing power were observed, and the overall evaluation was C. On the other hand, in the detergent composition of Example 24 containing, in addition to a nonionic surfactant with an HLB value of 8 as component (B), a hydrophilic (HLB value = 15) nonionic surfactant, high transparency and good cleansing power were observed, suggesting that a hydrophilic nonionic surfactant can be used in addition to component (B).

Industrial Applicability

[0062] As described in detail above, according to the present invention, it is possible to provide a detergent composition for a foamer that is excellent in the cleansing power and foaming property of a makeup cosmetic, and is excellent in the dischargeability from a foamer container and suitable for use in a foamer container. Furthermore, the present invention can provide a cleaning composition for a former that stably contains an acyl acidic amino acid or a salt thereof, has a mild effect on the skin, and is excellent in biodegradability, bacteriostatic action, etc. In addition, the present invention can provide a cleaning composition in a form filled in a former container, which can suppress the occurrence of nozzle clogging and can be discharged as good and stable foam from the former container.

[0063] This application is based on Japanese Patent Application No. 2019-209772 filed in Japan, and the contents thereof are all incorporated herein.

Claims

1. A cleaning agent composition containing (A) an anionic surfactant, (B) a nonionic surfactant having an HLB value of 7 to 11 and being liquid at 25°C, (C) an amphoteric surfactant, (D) a polyhydric alcohol, (E) an oil, and (F) water, wherein the ratio [(A) / (B)] of the content of component (A) to the content of component (B) is 0.4 to 3.8 by mass ratio, the ratio [(B) / (E)] of the content of component (B) to the content of component (E) is 0.4 to 6 by mass ratio, the viscosity at 25°C is 500 mPa·s or less, and the pH at 25°C is 3 to 6, wherein (A) the anionic surfactant is one or more selected from the group consisting of N-acylglutamate and N-acylaspartate, and (C) the amphoteric surfactant is one or more selected from the group consisting of sulfobetaine-type amphoteric surfactants and imidazoline-type amphoteric surfactants, a cleaning agent composition for a former.

2. The cleaning agent composition according to claim 1, wherein (B) the nonionic surfactant having an HLB value of 7 to 11 and being liquid at 25°C is a polyoxyethylene glycerin fatty acid ester.

3. The cleaning agent composition according to claim 1 or 2, wherein (E) the oil is one or more selected from the group consisting of hydrocarbon oils, ester oils, and triglycerides (saturated fatty acids), and is liquid at 25°C.

4. The cleaning agent composition according to any one of claims 1 to 3, wherein the content of (E) the oil is 0.01% by mass to 6% by mass.

5. The cleaning agent composition according to any one of claims 1 to 4, wherein the viscosity at 25°C is 100 mPa·s or less.

6. The cleaning agent composition according to any one of claims 1 to 5, wherein the transmittance at a measurement wavelength of 430 nm is 70% or more.

7. A cleaning agent composition in a form filled in a former container, the cleaning agent composition according to any one of claims 1 to 6.

Images