JP7317336B2 - Packaging bag for hair cosmetics - Google Patents

Description

The present invention relates to a hair cosmetic packaging bag for packaging a hair cosmetic containing a 1-hydroxy-2-pyridone type compound.

In general, hair cosmetics such as shampoos and rinses are sold in bottle containers made of resin such as polyethylene terephthalate (PET). On the other hand, from the viewpoint of waste reduction, etc., a product in which a resin packaging bag is filled with a hair cosmetic is also on the market.

Conventionally, hair cosmetics containing 1-hydroxy-2-pyridone type compounds as antibacterial/antioxidant components have been known. For example, Patent Literatures 1 and 2 disclose a configuration in which a container made of polyolefin resin is filled with a hair cosmetic containing such a 1-hydroxy-2-pyridone type compound.

JP-A-9-48708 JP 2013-253028 A

However, Patent Documents 1 and 2, in which a container made of polyolefin resin is filled with a hair cosmetic, has a problem that the storage stability of the 1-hydroxy-2-pyridone type compound may deteriorate.

An object of the present invention is to provide a hair cosmetic packaging bag for packaging a hair cosmetic containing a 1-hydroxy-2-pyridone type compound with improved storage stability. It is in.

The present invention is based on the discovery that the storage stability of 1-hydroxy-2-pyridone type compounds can be improved by adopting a packaging bag having a specific multilayer film structure. In addition, when using a solubilizing agent such as water, the numerical value of mass % indicating the content of the component in this specification is the numerical value in the dosage form including them.

To achieve the above object, a hair cosmetic packaging bag according to one aspect of the present invention is a hair cosmetic packaging bag for packaging a hair cosmetic containing a 1-hydroxy-2-pyridone type compound, , a polyolefin resin layer as the innermost layer, a polyester resin layer as the intermediate layer, and a polyester resin layer or a nylon resin layer as the outermost layer.

The intermediate layer may further have an aluminum layer on the outer layer side of the polyester resin layer. The polyester resin layer of the intermediate layer may be subjected to inorganic vapor deposition. The outermost layer may be a polyester resin layer. The hair cosmetic composition may contain an amino acid-type anionic surfactant, an amphoteric surfactant, and an ether-type nonionic surfactant.

According to the present invention, the storage stability of 1-hydroxy-2-pyridone type compounds can be improved.

Hereinafter, one embodiment of the packaging bag for hair cosmetics (hereinafter referred to as packaging bag) of the present invention will be described. The packaging bag of this embodiment includes a polyolefin resin layer as the innermost layer, at least a polyester resin layer as an intermediate layer, and a polyester resin layer or a nylon resin layer as the outermost layer.

Examples of the resin forming the innermost polyolefin resin layer include polyethylene, polypropylene, and polybutylene. Furthermore, specific examples of polyethylene include high-density polyethylene, low-density polyethylene, ultra-low-density polyethylene, linear low-density polyethylene (LLDPE), and ultra-high molecular weight polyethylene. Among these, only one type may be used alone, or two or more types may be used in combination. Among these, LLDPE is preferably applied from the viewpoint of improving the storage stability of the content containing the 1-hydroxy-2-pyridone type compound, the stability of the packaging bag, and the usability such as tearability and the like.

Although the thickness of the polyolefin layer is not particularly limited, it is preferably 10 to 500 μm, more preferably 30 μm, from the viewpoint of improving the storage stability, water vapor permeability, feeling of use, etc. of the content containing the 1-hydroxy-2-pyridone type compound. ~200 μm.

The intermediate layer includes at least a polyester resin layer, and preferably includes an aluminum layer on the outer layer side of the polyester resin layer. Specific examples of the resin constituting the polyester resin layer include polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, and the like. Among these, only one type may be used alone, or two or more types may be used in combination. Among these, PET is preferably applied from the viewpoint of improving the feeling of use such as the storage stability of contents containing a 1-hydroxy-2-pyridone type compound, the stability of packaging bags, and tear-openability.

The surface layer of the polyester resin layer may be subjected to inorganic vapor deposition. The side on which inorganic vapor deposition is applied may be either the inner layer side or the outer layer side of the packaging bag. As the type of inorganic vapor deposition, known ones can be appropriately adopted from the viewpoint of appearance characteristics, light shielding properties, etc. Examples include aluminum, an alloy mainly composed of aluminum, silicon oxide, aluminum oxide, and a composite of aluminum oxide and silicon. and zinc oxide. Among these, only one type may be used alone, or two or more types may be used in combination. Among these, transparent vapor deposition using silicon oxide is preferably applied from the viewpoint of excellent usability such as tearability and the like.

The thickness of the polyester resin layer is not particularly limited, but is preferably 1 to 50 μm, more preferably 1 to 50 μm, from the viewpoint of the storage stability, water vapor permeability, tear-openability, etc. of the content containing the 1-hydroxy-2-pyridone type compound. is 5-25 μm.

The aluminum layer further improves water vapor permeability, airtightness, and light shielding properties. In addition, the stability of the packaging bag and the feeling of use such as tear-openability are further improved. Although the thickness of the aluminum layer is not particularly limited, it is preferably 0.1 to 50 μm, more preferably 1 to 20 μm from the viewpoint of water vapor permeability and airtightness.

A polyester resin layer or a nylon resin layer is applied to the outermost layer. The type of resin constituting the polyester resin layer is the same as that of the polyester resin layer used in the intermediate layer. As the resin constituting the nylon resin layer, a known resin can be appropriately employed. Among these, PET is preferably applied from the viewpoint of excellent printability on the surface of the packaging bag and excellent shape retention (standing property) of the packaging bag filled with contents.

Although the thickness of the outermost layer is not particularly limited, it is preferably 1 to 50 μm, more preferably 5 to 25 μm from the viewpoint of storage stability of the content containing the 1-hydroxy-2-pyridone type compound, tearability and the like. be.

A well-known method can be suitably adopted for pressure-bonding sealing between each layer. For example, the sealing may be performed by heat-sealing resins constituting each layer, or dry lamination may be performed by newly forming a seal layer (adhesive).

The shape and size of the packaging bag of this embodiment are not particularly limited. For example, the resin sheet having the multi-layer film structure prepared as described above is folded, and the end portions are crimp-sealed in a state where the opening is provided to form a bag shape. A packaging bag is manufactured by sealing the opening after filling the interior with the hair cosmetic. Alternatively, a standing pouch structure having a side surface and a bottom surface may be employed. With such a configuration, it can be stored upside down, and can be stored more easily.

The thickness from the outermost layer surface to the innermost layer surface of the packaging bag is appropriately set in consideration of durability, openability, standing property, etc., preferably 12.1 to 650 μm, more preferably 41 to 270 μm. .

The packaging bag may be opened by cutting through a notch or the like formed in the crimped seal portion, or a spout having a discharge port may be attached to the packaging bag and taken out therefrom. The spout may be composed of, for example, a cylindrical portion and a lid body that hermetically closes the discharge port, and the lid body may be attached to the cylindrical portion by screwing so that it can be opened and closed. In addition to the spout, re-opening means such as a chuck structure may be employed as a means for taking out the contents.

The content to be filled in the packaging bag is not particularly limited as long as it is a hair cosmetic containing a 1-hydroxy-2-pyridone type compound. Since 1-hydroxy-2-pyridone type compounds are known to have antibacterial and antioxidant effects, they are appropriately incorporated in cosmetics applied to hair or scalp for the purpose of exhibiting such effects.

Specific examples of 1-hydroxy-2-pyridone compounds include 1-hydroxy-2-pyridone, 1-hydroxy-4-methyl-2-pyridone, 1-hydroxy-6-methyl-2-pyridone, 1-hydroxy -4,6-dimethyl-2-pyridone, 1-hydroxy-4-methyl-6-heptyl-2-pyridone, 1-hydroxy-4-methyl-6-(1-ethylpentyl)-2-pyridone, 1- Hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, 1-hydroxy-4-methyl-6-undecyl-2-pyridone, 1-hydroxy-4-methyl-6-propenyl -2-pyridone, 1-hydroxy-4-methyl-6-octenyl-2-pyridone, 1-hydroxy-4-methyl-6-(2,2-dibutyl-vinyl)-2-pyridone, 1-hydroxy-4 -methyl-6-(cyclohexenylidene-methyl)-2-pyridone, 1-hydroxy-4-methyl-6-cyclohexyl-2-pyridone, 1-hydroxy-4-methyl-6-(methyl-cyclohexyl)-2 -pyridone, 1-hydroxy-4-methyl-6-(2-bicyclo[2,2,1]heptyl)-2-pyridone, 1-hydroxy-4-methyl-6-[2-(dimethylcyclohexyl)-propyl ]-2-pyridone, 1-hydroxy-4-methyl-6-(4-methyl-phenyl)-2-pyridone, 1-hydroxy-4-methyl-6-(3-methyl-phenyl)-2-pyridone, 1-hydroxy-4-methyl-6-(4-tert-butyl-phenyl)-2-pyridone, 1-hydroxy-4-methyl-6-(3-methyl-4-chloro-phenyl)-2-pyridone, 1-hydroxy-4-methyl-6-(3,5-dichloro-phenyl)-2-pyridone, 1-hydroxy-4-methyl-6-(3-bromo-4-chloro-phenyl)-2-pyridone, 1-hydroxy-4-methyl-6-(4-methoxystyryl)-2-pyridone, 1-hydroxy-4-methyl-6-[1-(4-nitrophenoxy)-butyl]-2-pyridone, 1- Hydroxy-4-methyl-6-(4-cyanophenoxymethyl)-2-pyridone, 1-hydroxy-4-methyl-6-(phenylsulfonylmethyl)-2-pyridone, 1-hydroxy-4-methyl-6- [1-(4-chlorophenylsulfonyl)-butyl]-2-pyridone, 1-hydroxy-4-methyl-6-benzyl-2-pyridone, 1-hydroxy-4-methyl-6-(2,4-dimethyl benzyl)-2-pyridone, 1-hydroxy-4-methyl-6-(tertiary-butyl-benzyl)-2-pyridone, 1-hydroxy-4-methyl-6-(2-chloro-benzyl)-2-pyridone , 1-hydroxy-4-methyl-6-(4-chlorobenzyl)-2-pyridone, 1-hydroxy-4-methyl-6-(2,5-dichloro-benzyl)-2-pyridone, 1-hydroxy- 4-methyl-6-(4-bromo-benzyl)-2-pyridone, 1-hydroxy-4-methyl-6-(phenoxymethyl)-2-pyridone, 1-hydroxy-4-methyl-6-(3- methylphenoxy-methyl)-2-pyridone, 1-hydroxy-4-methyl-6-(4-sec-butylphenoxy-methyl)-2-pyridone, 1-hydroxy-4-methyl-6-(2,4, 5-trichlorophenoxy-methyl)-2-pyridone, 1-hydroxy-4-methyl-6-(4-bromophenoxy-methyl)-2-pyridone, 1-hydroxy-4-methyl-6-(4-chlorophenyl Mercapto-methyl)-2-pyridone, 1-hydroxy-4-methyl-6-(4-methylphenylmercapto-methyl)-2-pyridone, 1-hydroxy-4-methyl-6-(2-naphthyl)-2 -pyridone, 1-hydroxy-4-methyl-6-benzhydryl-2-pyridone, 1-hydroxy-4-methyl-6-furyl-2-pyridone, 1-hydroxy-4-methyl-6-(furylvinyl)- 2-pyridone, 1-hydroxy-4-methyl-6-styryl-2-pyridone, 1-hydroxy-4-methyl-6-(phenylbutadienyl)-2-pyridone, 1-hydroxy-4-phenyl-6 -methyl-2-pyridone, 1-hydroxy-4,6-diphenyl-2-pyridone, salts thereof and the like. Among these specific examples, only one type may be contained alone, or two or more types may be combined and contained.

Salts include organic base salts, alkali metal salts, alkaline earth metal salts, divalent to tetravalent cation salts, ammonium salts and the like. Examples of organic base salts include ethanolamine, diethanolamine, N-ethylethanolamine, N-methyl-diethanolamine, triethanolamine, diethylamino-ethanol, 2-amino-2-methyl-n-propanol, dimethylaminopropanol, 2 -amino-2-methyl-propanediol, tri-isopropanolamine, ethylenediamine, hexamethylenediamine, morpholine, piperidine, cyclohexylamine, tributylamine, dodecylamine, N,N-dimethyl-dodecylamine, stearylamine, oleylamine, benzylamine , dibenzylamine, N-ethylbenzylamine, dimethylstearylamine, N-methyl-morpholine, N-methylpiperazine, 4-methylcyclohexylamine, N-hydroxyethyl-morpholine and other organic amine salts.

Among these, piroctone olamine, which is an ethanolamine salt of 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, is preferred from the viewpoint of excellent antibacterial action and antioxidant action. Applies.

The amount of the 1-hydroxy-2-pyridone compound in the hair cosmetic is not particularly limited, but from the viewpoint of exhibiting the above-mentioned effects and stability in the hair cosmetic, it is 0.001 to 5% by mass. Preferably, 0.01 to 1% by mass is more preferable.

Formulations of hair cosmetics include liquid forms such as aqueous solutions and milky lotions, gel forms, and cream forms at 25°C. Applications of hair cosmetics are not particularly limited, and include hair cleansing compositions (shampoos), rinses, conditioners, treatments, permanent hair dyes, semi-permanent hair dyes, setting agents, hair growth agents, hair growth shampoos and conditioners, and the like. be done. A specific example of application to a hair cleansing composition as a hair cosmetic is shown below.

<Hair cleansing composition>
The hair cleansing composition contains, in addition to the 1-hydroxy-2-pyridone type compound, for example, surfactants, cationic polymers and solubilizers. As the surfactant, known components can be appropriately employed, and only one type may be contained alone, or two or more types may be combined and contained.

The content of the surfactant is not particularly limited, but is preferably 5 to 50% by mass, more preferably 10 to 30% by mass, in the hair cleansing composition. When the surfactant content is 5% by mass or more, the detergency is further improved. On the other hand, when the amount of the surfactant is 50% by mass or less, a suitable viscosity is maintained and the feeling of use during washing is further improved.

As a surfactant, from the viewpoint of improving detergency, for example, an amino acid-type anionic surfactant and an amphoteric surfactant are contained, and from the viewpoint of improving usability, an ether-type nonionic surfactant is contained. is preferred.

Specific examples of amino acid type anionic surfactants include, for example, N-acyl amino acid type surfactants. The N-acyl amino acid type surfactant is a salt of an amino acid having a saturated or unsaturated acyl group and a salt of analogues of the same amino acid. Specific examples of such amino acids include glutamic acid, glycine, aspartic acid, alanine, phenylalanine, leucine, isoleucine, methionine, proline, tryptophan, valine, serine, N-methylglycine (sarcosine), N-methylalanine, and the like. . Specific examples of analogues of the amino acid include 2-aminoethanesulfonic acid (taurine), N-methyltaurine and the like. Also, the acidic amino acid and its analogs may be any of D-, L-, and DL-isomers.

Specific examples of counter ions for anionic groups include sodium, potassium, magnesium, monoethanolamine, triethanolamine, and the like. Specific examples of N-acyl amino acid surfactants include triethanolamine cocoyl glutamate (TEA cocoyl glutamate), sodium cocoyl methyl taurate, sodium lauroyl methyl alanine, sodium lauroyl aspartate, sodium lauroyl methyl taurate, sodium stearoyl glutamate, sodium myristoyl glutamate, sodium palmitoyl proline and the like. Among these specific examples, only one type may be contained alone, or two or more types may be combined and contained. Among these, TEA cocoyl glutamate, sodium cocoyl methyl taurate, sodium lauroyl methyl alanine, and sodium lauroyl aspartate are preferred.

The amount of the amino acid type anionic surfactant is not particularly limited, but is preferably 0.3 to 25% by mass, more preferably 3 to 20% by mass in the hair cleansing composition. When the blending amount is 0.3% by mass or more, the detergency is further improved. On the other hand, when the blending amount is 25% by mass or less, an appropriate viscosity is maintained, and the usability during washing is further improved.

Specific examples of amphoteric surfactants include cocobetaine, lauramidopropylbetaine, cocamidopropylbetaine, sodium lauroamphoacetate, sodium cocoamphoacetate, coconut oil fatty acid amidopropylbetaine, laurylbetaine (lauryldimethylaminoacetic acid betaine), lauryl and sodium aminopropionate. Among these specific examples, only one type may be contained alone, or two or more types may be combined and contained.

The amount of the amphoteric surfactant is not particularly limited, but is preferably 0.3 to 25% by mass, more preferably 3 to 20% by mass in the hair cleansing composition. When the blending amount is 0.3% by mass or more, the detergency is further improved. On the other hand, when the blending amount is 25% by mass or less, an appropriate viscosity is maintained, and the usability during washing is further improved.

The ether-type nonionic surfactant stabilizes a hair cleansing composition containing a 1-hydroxy-2-pyridone-type compound, an amino acid-type anionic surfactant, and an amphoteric surfactant to an appropriate viscosity. . As a result, when the packaging bag for the hair cleansing composition is a refillable bag, the usability characteristics of the bag, such as ease of filling, transfer operation, and reduction of content residue adhering to the bag after transfer, are improved. . In addition, it is difficult to drip, and the speed of foaming is fast, improving the feeling of use of the detergent.

Examples of ether-type nonionic surfactants include polyoxyalkylene alkyl ethers and polyoxyalkylene alkylphenyl ethers. More specifically, polyoxyethylene (hereinafter referred to as POE) cetyl ether (ceteth), POE stearyl ether (steareth), POE behenyl ether, POE oleyl ether (oleth), POE lauryl ether (laures), POE octyldodecyl ether , POE hexyldecyl ether, POE isostearyl ether, POE nonylphenyl ether, POE octylphenyl ether, POE polyoxypropylene cetyl ether, POE polyoxypropylene decyltetradecyl ether, POE cetostearyl hydroxymyristyrene ether (e.g. ceteareth-60 myristyl glycol) and the like. Among these specific examples, only one type may be contained alone, or two or more types may be combined and contained. Among these, POE cetostearyl hydroxymiristyrene ether is preferred.

The amount of the ether-type nonionic surfactant to be blended is not particularly limited, but is preferably 0.1 to 10% by mass, more preferably 0.5 to 5% by mass, in the hair cleansing composition. be. When the blending amount is 0.1% by mass or more, the viscosity stability and feeling of use are further improved. On the other hand, when the blending amount is 10% by mass or less, the appropriate viscosity is maintained, and the usability during washing is further improved.

Other surfactants include anionic surfactants other than the above, cationic surfactants, and nonionic surfactants other than the above.
Specific examples of anionic surfactants include alkyl ether sulfates, alkyl sulfates, alkyl ether sulfates, alkenyl ether sulfates, alkenyl sulfates, olefinsulfonates, alkanesulfonates, saturated or unsaturated Fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfone fatty acid salts, phosphoric acid mono- or diester surfactants, sulfosuccinic acid esters, derivatives thereof, and the like. Specific examples of counter ions for the anionic groups of these surfactants include sodium ions, potassium ions, triethanolamine, and the like. More specifically, the alkyl ether sulfate salt includes, for example, POE sodium lauryl ether sulfate. Specific examples of alkyl sulfates include sodium lauryl sulfate, sodium cetyl sulfate, and the like. Specific examples of alkyl sulfate derivatives include POE sodium lauryl sulfate and the like. Alkyl ether carboxylates include, for example, POE sodium lauryl ether acetate (eg sodium laureth-4 carboxylate). Specific examples of sulfosuccinic acid esters include disodium lauryl sulfosuccinate. Among these specific examples, only one type may be contained alone, or two or more types may be combined and contained.

Specific examples of cationic surfactants include lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, alkyltrimethylammonium chloride, distearyldimethylammonium chloride, cetyltrimethylammonium bromide, stearyltrimethylammonium bromide, Ethyl sulfate lanolin fatty acid aminopropylethyldimethylammonium, stearyltrimethylammonium saccharin, cetyltrimethylammonium saccharin, methacryloyloxyethyltrimethylammonium chloride, behenyltrimethylammonium methylsulfate, behenyldimethylamine, behenate diethylaminoethylamide, behenate dimethylaminopropylamide, behenic acid dimethylaminoethylamide, stearyldimethylamine, palmitoxypropyldimethylamine, stearoxypropyldimethylamine, stearic acid dimethylaminopropylamide and the like. Specific examples of alkyltrimethylammonium chloride include behenyltrimethylammonium chloride and aralkyltrimethylammonium chloride. Among these specific examples, only one type may be contained alone, or two or more types may be combined and contained.

Specific examples of nonionic surfactants include fatty acid alkanolamide type nonionic surfactants, ester type nonionic surfactants, alkyl glucosides and the like. Fatty acid alkanolamide type nonionic surfactants include, for example, fatty acid alkanolamides, polyalkylene oxide fatty acid alkanolamides, and the like. Specific examples of fatty acid alkanolamides include lauric acid monoethanolamide and stearic acid monoethanolamide. Specific examples of the polyalkylene oxide fatty acid alkanolamide include POE lauric acid monoethanolamide, POE coconut oil fatty acid monoethanolamide, polyoxypropylene myristate monoethanolamide, polyoxypropylene coconut oil fatty acid monoisopropanolamide, and the like. mentioned. Specific examples of POE lauric acid monoethanolamide include, for example, PEG-3 lauramide.

Specific examples of ester-type nonionic surfactants include POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, POE sorbitan trioleate, POE glycerin monostearate, POE glycerin monomyristate, POE sorbitol tetraoleate, POE sorbitol hexastearate, POE sorbitol monolaurate, POE coconut oil fatty acid glycerin, POE sorbitol beeswax, polyethylene glycol monooleate, polyethylene glycol monostearate, polyethylene glycol distearate, Polyethylene glycol monolaurate, lipophilic glyceryl monostearate, lipophilic glyceryl monostearate, self-emulsifying glyceryl monostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monostearate, mono Sorbitan palmitate, sorbitan monolaurate, POE sorbitan monoisostearate, sucrose fatty acid ester, decaglyceryl monolaurate (polyglyceryl-10 laurate), decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, POE and reduced lanolin. Specific examples of POE coconut oil fatty acid glycerin include, for example, coconut oil fatty acid PEG-7 glyceryl. Specific examples of polyethylene glycol distearate include PEG-150 distearate. Specific examples of POE sorbitan monoisostearate include PEG-20 sorbitan isostearate. Specific examples of POE sorbitan monolaurate include PEG-80 sorbitan laurate. Among these specific examples, only one type may be contained alone, or two or more types may be combined and contained.

Specific examples of alkyl glucosides include alkyl (C8-16) glucoside, POE methyl glucoside, POE methyl dioleate glucoside, and the like. Among these specific examples, only one type may be contained alone, or two or more types may be combined and contained.

By using the cationic polymer in combination with the above components, the feel during rinsing and the feel after finishing are further improved. Therefore, the hair cleansing composition preferably contains a cationic polymer. Specific examples of cationic polymers include cationized cellulose derivatives, cationic starch, cationized guar gum, cationized chitosan, diallyl quaternary ammonium salt polymers or copolymers, and quaternized polyvinylpyrrolidone.

Specific examples of cationized cellulose derivatives include a quaternary ammonium salt polymer (polyquaternium-10 (INCI name)) obtained by adding glycidyltrimethylammonium chloride to hydroxyethyl cellulose, and a copolymer of hydroxyethyl cellulose/dimethyldiallylammonium chloride. coalescence (Polyquaternium-4: such as Cellcoat H-100, Cellcoat L-200 (manufactured by Akzo Nobel)) and the like.

Specific examples of cationic guar gum include guar hydroxypropyltrimonium chloride and the like. Specific examples of cationized chitosan include chitosan hydroxypropyltrimonium chloride and the like.

Specific examples of diallyl quaternary ammonium salt polymers or copolymers include, for example, dimethyl diallyl ammonium chloride polymer (polydimethylmethylene piperidinium chloride) (polyquaternium-6: for example Merquat 100 (manufactured by Louvrisol)), acrylic Acid amide/dimethyldiallylammonium chloride copolymer (polyquaternium-7), dimethyldiallylammonium chloride/acrylic acid copolymer (polyquaternium-22: for example Merquat 280 (manufactured by Louvrisol)), acrylic acid/diallyl quaternary ammonium salt / acrylamide copolymers and the like. Preferred are hydroxyethylcellulose dimethyldiallylammonium chloride and O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride.

Specific examples of the quaternized polyvinylpyrrolidone include, for example, a quaternary ammonium salt obtained from a copolymer of vinylpyrrolidone and dimethylaminoethyl methacrylate and diethyl sulfate (polyquaternium-11: for example, Gafkote 734 and 755 (ISP Japan) company)) and the like. Among these specific examples, only one type may be contained alone, or two or more types may be combined and contained.

Among these, it is preferable to use two or more cationic polymers in combination from the viewpoint of improving the texture of the hair after finishing. More specifically, a cationic polymer selected from cationic cellulose derivatives and cationic guar gum. It is more preferable to use a polymer together.

A solubilizer is blended, for example, when the hair cleansing composition is liquefied. Examples of solubilizers used include, for example, water and organic solvents (solvents). Specific examples of organic solvents include ethanol, n-propanol, isopropanol, methyl cellosolve, ethyl cellosolve, methyl carbitol, ethyl carbitol, benzyl alcohol, phenethyl alcohol, γ-phenylpropyl alcohol, cinnamic alcohol, anise alcohol, p-methylbenzyl alcohol, α-dimethylphenethyl alcohol, α-phenylethanol, ethylene glycol phenyl ether (phenoxyethanol), phenoxyisopropanol, 2-benzyloxyethanol, N-alkylpyrrolidone, alkylene carbonate, alkyl ether and the like. Among these solubilizers, only one kind may be contained alone, or two or more kinds may be contained in combination. Among these, water is preferably applied because of its excellent ability to dissolve other ingredients in the hair cleansing composition. When water is used as the solvent, the content of water in the hair cleansing composition (content at the time of use) is preferably 30% by mass or more, more preferably 40% by mass or more.

The hair cleansing composition may optionally contain components other than those mentioned above, such as water-soluble polymers other than those mentioned above, oily components, polyhydric alcohols, pH adjusters, sugars, preservatives, stabilizers, animals, plants, or microorganisms. Extracts, crude drug extracts, vitamins, fragrances, antioxidants, chelating agents, amino acids, UV absorbers, inorganic salts, acid dyes, hair dyes, antipruritic agents, cooling agents, moisturizers, hair protectants, etc. may further contain.

A water-soluble polymer other than the above imparts an appropriate viscosity to the hair cleansing composition. Therefore, the hair cleansing composition may contain a water-soluble polymer within a range that does not impair the effects of the present invention. Examples of water-soluble polymers include natural polymers, semi-synthetic polymers, synthetic polymers, and inorganic polymers. Specific examples of natural polymers include starch, guar gum, locust bean gum, quince seed, carrageenan, galactan, gum arabic, tragacanth gum, pectin, mannan, xanthan gum, dextran, succinoglucan, curdlan, hyaluronic acid, gelatin, Examples include casein, albumin, collagen, hydrolyzed collagen, dextrin, triglucopolysaccharide (pullulan), and the like.

Specific examples of semi-synthetic polymers include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose sodium, hydroxypropyl methyl cellulose, starch phosphate, propylene glycol alginate, and alginate.

Specific examples of synthetic polymers include PEG-120 methylglucose triisostearate, polyvinylcaprolactam, polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), vinylpyrrolidone-vinyl acetate (VP/VA) copolymer, polyvinyl butyral, polyvinyl methyl ether, carboxyvinyl polymer, sodium polyacrylate, polyacrylamide, polyethylene oxide, ethylene oxide/propylene oxide block copolymer, acrylic acid/alkyl acrylate copolymer, half-ester of itaconic acid and POE alkyl ether, or a copolymer consisting of an ester of methacrylic acid and POE alkyl ether and at least one monomer selected from acrylic acid, methacrylic acid and their alkyl esters, (methacryloylethyldimethylbetaine/methacryloylethyltrimethylammonium chloride / methoxypolyethylene glycol methacrylate) copolymer (polyquaternium-49). Among these water-soluble polymers, only one type may be contained alone, or two or more types may be combined and contained.

Oily components other than the above impart moisture to the hair. Therefore, the hair cleansing composition may contain an oily component within a range that does not impair the effects of the present invention. Examples of oily components include oils and fats, waxes, hydrocarbons, ester oils, higher alcohols, higher fatty acids, alkylglyceryl ethers, and silicones.

Specific examples of fats and oils include Argania spinosa kernel oil, olive oil (olive oil), camellia oil, shea butter, almond oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, corn oil, rapeseed oil, and rice bran. oil, rice germ oil, grape seed oil, avocado oil, macadamia nut oil, castor oil, coconut oil, evening primrose oil, apricot kernel oil, persic oil, peach kernel oil, palm oil, egg yolk oil and the like. Specific examples of waxes include lanolin, beeswax, candelilla wax, carnauba wax, and jojoba oil. Specific examples of hydrocarbons include paraffin, olefin oligomer, polyisobutene, hydrogenated polyisobutene, mineral oil, squalane, polybutene, polyethylene, microcrystalline wax, petrolatum, liquid paraffin, light isoparaffin, light liquid isoparaffin, isoparaffin, and α-olefin. Examples include oligomers and synthetic squalane.

Specific examples of ester oils include diisopropyl adipate, isopropyl myristate, cetyl octanoate, isononyl isononanoate, octyldodecyl myristate, isopropyl palmitate, stearyl stearate, myristyl myristate, isotridecyl myristate, 2-palmitate Ethylhexyl, octyldodecyl ricinoleate, fatty acid cholesteryl/lanosteryl having 10 to 30 carbon atoms, cetyl lactate, lanolin acetate, ethylene glycol di-2-ethylhexanoate, pentaerythritol fatty acid ester, dipentaerythritol fatty acid ester, caprin cetyl acid, glyceryl tricaprylate, diisostearyl malate, dioctyl succinate, cetyl 2-ethylhexanoate, hydrogenated castor oil isostearate and the like.

Specific examples of higher alcohols include cetyl alcohol (cetanol), 2-hexyldecanol, stearyl alcohol, isostearyl alcohol, cetostearyl alcohol, oleyl alcohol, arachyl alcohol, behenyl alcohol, 2-octyldodecanol, lauryl alcohol, and myristyl alcohol. , decyltetradecanol, lanolin alcohol, and the like.

Specific examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, 12-hydroxystearic acid, oleic acid and lanolin fatty acid. Specific examples of alkyl glyceryl ethers include batyl alcohol, chimyl alcohol, selachyl alcohol, and isostearyl glyceryl ether.

Specific examples of silicone include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, high polymerization silicone, amino-modified silicone, and betaine-modified silicone. , alkyl-modified silicone, alkoxy-modified silicone, mercapto-modified silicone, carboxy-modified silicone, fluorine-modified silicone, polyether-modified silicone and the like. Among these oily components, only one type may be contained alone, or two or more types may be combined and contained.

Polyhydric alcohols include, for example, glycol and glycerin. Glycols include, for example, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, high polymer polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, 1,3-butylene glycol (BG) and the like. Glycerin includes, for example, glycerin, diglycerin, polyglycerin and the like. Among these polyhydric alcohols, only one type may be contained alone, or two or more types may be combined and contained.

A pH adjuster may be added to adjust the pH of the hair cleansing composition. Examples of pH adjusters include inorganic acids, organic acids, salts thereof, and the like. Specific examples of inorganic acids include phosphoric acid, hydrochloric acid, nitric acid, sulfuric acid and boric acid. Further, specific examples of phosphoric acid include orthophosphoric acid, polyphosphoric acid, pyrophosphoric acid, metaphosphoric acid and the like. Specific examples of organic acids include citric acid, tartaric acid, lactic acid, malic acid, succinic acid, fumaric acid, maleic acid, pyrophosphoric acid, gluconic acid, glucuronic acid, and benzoic acid. Specific examples of organic acid salts include sodium salts, potassium salts, ammonium salts and the like. Specific examples of sugars include monosaccharides such as glucose and galactose, disaccharides such as maltose, sucrose, fructose and trehalose, and sugar alcohols such as sorbitol. Specific examples of antiseptics include paraben, methylparaben, sodium benzoate and the like. Specific examples of stabilizers include phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, tannic acid and the like. Specific examples of animal, plant, or microbial extracts include Sapindus trifoliatus fruit extract, hydrolyzed yeast extract, and the like. Specific examples of antioxidants include ascorbic acids and sulfites. Specific examples of chelating agents include, for example, edetic acid (ethylenediaminetetraacetic acid (EDTA)), disodium edetate, tetrasodium edetate, diethylenetriaminepentaacetic acid and its salts, ethylenediaminehydroxyethyltriacetic acid and its salts, and hydroxyethane. diphosphonic acid (HEDP) and its salts, and the like. Specific examples of amino acids include threonine, arginine, theanine, taurine and the like. Examples of inorganic salts include sodium chloride and sodium carbonate. Itching suppressants include salicylic acid, derivatives thereof, and the like. Cooling agents include, for example, l-menthol. Moisturizers include, for example, rose water. Examples of hair protecting agents include disodium adenosine triphosphate. Only one of the other components mentioned above may be used, or two or more of them may be used in combination.

According to the above embodiment, the following effects can be obtained.
(1) The packaging bag of the present embodiment includes a polyolefin resin layer as the innermost layer, a polyester resin layer as the intermediate layer, and a polyester resin layer or nylon resin layer as the outermost layer. Therefore, when a hair cosmetic containing a 1-hydroxy-2-pyridone compound is filled and packaged, the storage stability of the 1-hydroxy-2-pyridone compound can be improved.

In addition, it is possible to improve the stability of the packaging bag, for example, the prevention of peeling between films, and the usability such as tearability and the like.
(2) When the packaging bag of the present embodiment further includes an aluminum layer as an intermediate layer on the outer layer side of the polyester resin layer, the water vapor permeability and airtightness are further improved. In addition, it further improves the stability of the packaging bag, for example, the prevention of peeling between films, and the feel of use such as tearability and the like.

(3) In the packaging bag of the present embodiment, when the polyester resin layer of the intermediate layer is subjected to inorganic vapor deposition, the stability of the packaging bag and the feeling of use, such as tear-openability, are further improved.
(4) In the packaging bag of the present embodiment, when the outermost layer is a polyester resin layer, the storage stability of the 1-hydroxy-2-pyridone type compound can be further improved. In addition, the surface printability of the packaging bag and the shape retention (standing property) of the packaging bag are improved.

(5) In the packaging bag of the present embodiment, when the hair cosmetic to be filled as the content contains an amino acid-type anionic surfactant, an amphoteric surfactant, and an ether-type nonionic surfactant, the viscosity is stabilized. improve sexuality. The ether type nonionic surfactant stabilizes the viscosity at an appropriate level in a hair cleansing composition containing a 1-hydroxy-2-pyridone type compound, an amino acid type anionic surfactant and an amphoteric surfactant. make it As a result, when the packaging bag for the hair cleansing composition is a refillable bag, the usability characteristics of the bag, such as ease of filling, transfer operation, and reduction of content residue adhering to the bag after transfer, are improved. . In addition, it is difficult to drip, and the speed of foaming is fast, improving the feeling of use of the detergent.

Note that the above embodiment may be modified as follows.
- In the above embodiment, polyester resin layer or nylon resin layer / polyester resin layer / polyolefin resin layer in order from the outermost layer, or polyester resin layer or nylon resin layer / aluminum layer / polyester resin layer / polyolefin resin layer in order from the outermost layer Arranged and configured. From the viewpoint of improving the strength, airtightness, etc. within the range that does not impair the effects of the present invention, another resin layer such as polyester, nylon (NY), ethylene / methacrylic acid copolymer (EMAA) is added between each layer. , cellophane, etc. may be arranged.

Next, the embodiment will be described more specifically with reference to examples and comparative examples. It should be noted that the present invention is not limited to the configurations described in Examples. Examples 2 and 3 are replaced with reference examples 2 and 3 below.
<Test Example 1: Test of 1-hydroxy-2-pyridone type compound stability of packaging bag>
A packaging bag was prepared for each example, and the storage stability and the like of the 1-hydroxy-2-pyridone type compound when filled with a hair cosmetic containing the 1-hydroxy-2-pyridone type compound were evaluated.

First, a hair cleansing composition (formulation example 1) as a hair cosmetic containing each component shown in Table 1 was prepared. In addition, the numerical value in the column showing each component in Table 1 shows the content of the component in the said column, and the unit is mass %.

(Example 1)
A PET resin layer (thickness 12 μm) as the outermost layer, an aluminum layer (thickness 7 μm) / PET resin layer (thickness 12 μm) as an intermediate layer, and an LLDPE resin layer (thickness 100 μm) as the innermost layer are laminated. A resin sheet having a multilayer film structure of PET resin layer/aluminum layer/PET resin layer/LLDPE resin layer was obtained. In addition, each layer was bonded together by dry lamination. The obtained resin sheet was folded in half, and with the opening provided, the ends were press-sealed to form a bag. After the inside of the bag was filled with the hair cleansing composition described above, the opening was sealed by thermocompression bonding to produce the packaging bag of Example 1 filled with the hair cleansing composition.

(Example 2)
A nylon resin layer (thickness 15 μm) as the outermost layer, an aluminum deposition PET resin layer (thickness 12 μm) as the intermediate layer, and an LLDPE resin layer (thickness 120 μm) as the innermost layer are laminated, and the nylon resin layer/aluminum deposition is laminated from the outer layer side. A resin sheet having a multilayer film structure of /PET resin layer/LLDPE resin layer was obtained. In addition, each layer was bonded together by dry lamination. In the same manner as in Example 1, a packaging bag of Example 2 filled with the hair cleansing composition was produced.

(Example 3)
PET resin layer (thickness 12 μm) as outermost layer, silica deposition (transparent deposition) PET resin layer (thickness 12 μm) as intermediate layer, nylon resin layer (thickness 15 μm), LLDPE resin layer (thickness 130 μm) as innermost layer were laminated to obtain a resin sheet having a multilayer film structure of PET resin layer/silica deposition/PET resin layer/nylon resin layer/LLDPE resin layer from the outer layer side. In addition, each layer was bonded together by dry lamination. In the same manner as in Example 1, a packaging bag of Example 3 filled with the hair cleansing composition was produced.

(Reference example 1)
As a reference example, a PET container having a thickness of 1500 μm was filled with the hair cleansing composition.
(Comparative example 1)
A PET resin layer (thickness 12 μm) as the outermost layer, an aluminum layer (thickness 7 μm), a nylon resin layer (thickness 15 μm) as an intermediate layer, and an LLDPE resin layer (thickness 100 μm) as the innermost layer are laminated. A resin sheet having a multilayer film structure of PET resin layer/aluminum layer/nylon resin layer/LLDPE resin layer was obtained. In addition, each layer was bonded together by dry lamination. In the same manner as in Example 1, a packaging bag of Comparative Example 1 filled with a hair cleansing composition was produced.

(Comparative example 2)
A PET resin layer (thickness 12 μm) as the outermost layer, an aluminum layer (thickness 7 μm) as the intermediate layer, and an LLDPE resin layer (thickness 100 μm) as the innermost layer are laminated. A resin sheet having a multilayer film structure of layers was obtained. In addition, each layer was bonded together by dry lamination. In the same manner as in Example 1, a packaging bag of Comparative Example 2 filled with a hair cleansing composition was produced.

(Stability of 1-hydroxy-2-pyridone type compound)
The packaging bag of each example was stored for 6 months in an environment of 40° C. and 75% relative humidity. After the storage period had elapsed, a cut was made in a portion of the pressure-bonded seal, and the bag was opened while being torn by hand from the cut, and the contents were taken out.

The stability of the 1-hydroxy-2-pyridone type compound in the hair cleansing composition filled as the content was evaluated by measuring the remaining amount of piroctone olamine (% by mass). The concentration of piroctone olamine was determined from a calibration curve obtained from standards using HPLC. When the residual amount of piroctone olamine was 95% or more, it was evaluated as excellent: ⊚, when it was 90% or more and less than 95%, it was evaluated as acceptable, and when it was less than 90%, it was evaluated as poor. Table 2 shows the results.

(Stability of packaging bag)
In evaluating the stability of the 1-hydroxy-2-pyridone compound described above, the appearance of the packaging bag was observed after the storage period had elapsed. When the multi-layer film structure of the packaging bag is not peeled off and changes in lamination strength are observed, but there is no problem in actual use, it is evaluated as excellent: ⊚, and when peeling between films is observed, it is evaluated as poor: x. Table 2 shows the results.

(Tear openability)
In the evaluation of the stability of the 1-hydroxy-2-pyridone compound described above, the ease of opening the package while tearing it manually from the notch was evaluated according to the following criteria.

It is excellent when it can be opened without difficulty until the end without stopping in the middle of tearing by hand: ◎, when it can be opened to the end although it requires some force in the middle of opening, it is acceptable: ○, when it becomes impossible to tear it by hand in the middle of opening was evaluated as bad: ×. Table 2 shows the results.

(water vapor permeability)
In the evaluation of the stability of the 1-hydroxy-2-pyridone compound described above, the mass of the packaging bag filled with the content was measured after the storage period had elapsed. The remaining content (% by mass) was determined by comparing with the mass of the packaging bag filled with the content before the expiration of the storage period. The case where the remaining content was 99% or more was evaluated as excellent: ⊚, the case where 90% or more and less than 99% was acceptable: ◯, and the case where the content was less than 90% was evaluated as poor: x. Table 2 shows the results.

As shown in Table 2, it was confirmed that the packaging bag of each example had no problem with the stability of the 1-hydroxy-2-pyridone compound after the storage period. On the other hand, it was confirmed that the packaging bags of Comparative Examples 1 and 2 did not provide the stability of the 1-hydroxy-2-pyridone compound. Moreover, peeling of the laminate between the aluminum layer and the nylon resin layer was observed, and the durability of the packaging bag was not obtained. It was confirmed that when the aluminum layer was used as the intermediate layer in Example 1, the water vapor permeability was excellent. It was confirmed that Examples 1 and 3 having an aluminum layer or a transparent vapor-deposited PET resin layer as an intermediate layer are superior in tear-openability to Example 2 having an aluminum vapor-deposited PET resin layer.

Claims (4)

A packaging bag for hair cosmetics containing a 1-hydroxy-2-pyridone compound, comprising:
Including a polyolefin resin layer as the innermost layer, a polyester resin layer as the intermediate layer, and a polyester resin layer or a nylon resin layer as the outermost layer ,
A packaging bag for hair cosmetics , wherein the intermediate layer further comprises an aluminum layer on the outer layer side of the polyester resin layer . 2. The packaging bag for hair cosmetics according to claim 1 , wherein the polyester resin layer of the intermediate layer is subjected to inorganic vapor deposition. The packaging bag for hair cosmetics according to claim 1 or 2 , wherein the outermost layer is a polyester resin layer. The packaging bag for hair cosmetics according to any one of claims 1 to 3 , wherein the hair cosmetics contain an amino acid-type anionic surfactant, an amphoteric surfactant, and an ether-type nonionic surfactant. .