Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/31—Hydrocarbons
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/34—Alcohols
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/73—Polysaccharides
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q3/00—Manicure or pedicure preparations
  • A61Q3/04—Nail coating removers

Definitions

• the present invention relates to a stripping agent, a method for producing the stripping agent, and a stripping method using the stripping agent.
• gel nails After application, gel nails deteriorate through daily use, such as peeling and/or chipping, so they must be periodically redone to maintain their aesthetic appearance.
• examples of gel nails include compositions containing a (meth)acrylate compound with photocuring properties.
• a solvent is used to swell the gel nail to make it easier to remove.
• a method of removing gel nails is known in which cotton soaked in a solvent is applied to the nail.
• JP 2014-200468 A describes an invention relating to a gel nail removal sheet, which is made by cutting a sheet into the shape of a nail, the sheet comprising a base sheet, a nonwoven fabric soaked in a gel containing a solvent that is layered on the base sheet, and a release layer.
• One aspect (first embodiment) of the present invention which can achieve at least one of the above objects, relates to a stripping agent comprising components (A) to (C) and having a pH of greater than 7; (A) component: solvent, (B) component: a thickener that is solid at 25°C, Component (C): A hydrophobic compound that is nonvolatile at 25°C.
• the present invention also includes the second to fourth embodiments as non-limiting examples of preferred embodiments.
• the second embodiment of the present invention is the stripping agent described in the first embodiment, further comprising a pH adjuster.
• the third embodiment of the present invention is the stripping agent described in the first embodiment, further comprising pH-adjusted water as component (D).
• the third embodiment of the present invention can also be said to be the stripping agent described in the second embodiment, in which the pH adjuster comprises pH-adjusted water as component (D).
• the fourth embodiment of the present invention is a stripping agent according to any one of the first to third embodiments, further comprising a surfactant.
• Another aspect (fifth embodiment) of the present invention which can achieve at least one of the above objects, relates to a stripping agent consisting of only five components, namely, components (A) to (C), a pH adjuster, and a surfactant; (A) component: solvent, (B) component: a thickener that is solid at 25°C, Component (C): A hydrophobic compound that is nonvolatile at 25°C.
• the present invention also includes a sixth embodiment and a seventh embodiment as non-limiting examples of preferred embodiments.
• the sixth embodiment of the present invention relates to a stripping agent consisting of only five components consisting of components (A) to (D) and a surfactant; (A) component: solvent, (B) component: a thickener that is solid at 25°C, Component (C): a hydrophobic compound that is nonvolatile at 25°C, (D) Component: pH-adjusted water.
• the sixth embodiment of the present invention can also be said to be the stripping agent described in the fifth embodiment, in which the pH adjuster contains pH-adjusted water as component (D).
• the seventh embodiment of the present invention is the stripping agent described in the fifth or sixth embodiment, which has a pH greater than 7.
• the present invention also includes the eighth to fifteenth embodiments as non-limiting examples of preferred embodiments.
• the eighth embodiment of the present invention is a stripping agent according to any one of the first to seventh embodiments, in which the component (A) contains a volatile hydrophobic solvent as the component (a-1) and/or a volatile hydrophilic solvent as the component (a-2).
• the ninth embodiment of the present invention is the stripping agent described in the eighth embodiment, in which the component (a-1) contains an aliphatic hydrocarbon solvent.
• the tenth embodiment of the present invention is the stripping agent according to the eighth or ninth embodiment, in which the component (a-2) contains an alcohol-based solvent and/or an ether-based solvent.
• An eleventh embodiment of the present invention is the stripping agent according to any one of the first to tenth embodiments, in which the component (B) is a (meth)acrylic resin and/or hydroxypropyl cellulose.
• the twelfth embodiment of the present invention is the stripping agent according to any one of the first to eleventh embodiments, in which the component (C) is a wax having a melting point of 30°C or higher.
• the thirteenth embodiment of the present invention is a stripping agent according to any one of the first to twelfth embodiments, which is used on gel nails after application.
• the fourteenth embodiment of the present invention is a method for removing gel nails after application, using the remover described in any one of the first to thirteenth embodiments, without using a sheet that suppresses the evaporation of the solvent and/or a material that is impregnated with the solvent.
• the fifteenth embodiment of the present invention is a method for removing gel nails after application, which includes applying the remover described in any one of the first to thirteenth embodiments to the gel nail after application and then leaving it for a specific period of time.
• Another aspect (sixteenth embodiment) of the present invention which can achieve at least one of the above objects, relates to a method for producing a stripper, comprising mixing the components (A) to (C) and a pH adjuster; (A) component: solvent, (B) component: a thickener that is solid at 25°C, Component (C): A hydrophobic compound that is nonvolatile at 25°C.
• the present invention also includes a seventeenth embodiment as a non-limiting example of a preferred embodiment.
• a seventeenth embodiment of the present invention relates to a method for producing a release agent, comprising mixing components (A) to (D); (A) component: solvent, (B) component: a thickener that is solid at 25°C, Component (C): a hydrophobic compound that is nonvolatile at 25°C, (D) Component: pH-adjusted water.
• the seventeenth embodiment of the present invention can also be said to be the method for producing the stripping agent described in the sixteenth embodiment, in which the pH adjuster contains pH-adjusted water as component (D).
• the present invention is not limited to the first to seventeenth embodiments.
• the above examples are illustrative of the embodiments of the present invention, it is clear that the scope of the present invention should be interpreted according to the appended claims.
• X to Y is used to mean that the numerical values (X and Y) written before and after it are included as the lower and upper limits, and means “X or more and Y or less.”
• a and/or B means that A and B are included, and combinations of these are included.
• operations and measurements of physical properties, etc. are performed under conditions of room temperature (20°C or more and 27°C or less) and relative humidity of 40% RH or more and 50% RH or less.
• One aspect of the present invention relates to a stripping agent comprising components (A) to (C) and having a pH of greater than 7; (A) component: solvent, (B) component: a thickener that is solid at 25°C, Component (C): A hydrophobic compound that is nonvolatile at 25°C.
• Another embodiment of the present invention relates to a stripping agent consisting of only five components: components (A) to (C), a pH adjuster, and a surfactant; (A) Component: Solvent; Component (B): a thickener that is solid at 25°C; Component (C): A hydrophobic compound that is nonvolatile at 25°C.
• Component (A) is a solvent. However, component (A) does not contain water. Component (A) acts to swell the gel nail after application, making it easier to peel off from the natural nail. Component (A) may be used alone or in combination of two or more types.
• the (A) component is not particularly limited and may contain a hydrophobic solvent or a hydrophilic solvent, but preferably contains a hydrophobic solvent and a hydrophilic solvent. In one embodiment, the (A) component is not particularly limited, but preferably contains a volatile solvent.
• the (A) component contains a volatile hydrophobic solvent as the (a-1) component and/or a volatile hydrophilic solvent as the (a-2) component. That is, it is preferable that the (A) component contains the (a-1) component, the (a-2) component, or a combination of these. From the same viewpoint, it is more preferable that the (A) component contains the (a-1) component and the (a-2) component. It is even more preferable that the (A) component consists of only the two components, the (a-1) component and the (a-2) component.
• the volatile solvent may be a solvent that easily volatilizes at least in part at atmospheric pressure and room temperature.
• the volatile solvent is preferably a solvent that loses weight when left for 1 hour at 25°C.
• the leaving for 1 hour at 25°C is performed in an open system at atmospheric pressure.
• the relative humidity when leaving for 1 hour at 25°C is preferably 40% RH or more and 50% RH or less, and may be 45% RH.
• the boiling point of the volatile solvent is not particularly limited, but is preferably 30°C or more and 150°C or less, more preferably 35°C or more and 140°C or less, and even more preferably 40°C or more and 135°C or less.
• a solvent that has a polar group in the molecule is called a hydrophilic solvent, and a solvent that does not have a polar group in the molecule is called a hydrophobic solvent.
• polar groups include an ether bond and a hydroxyl group.
• an ether bond represents *-O-*, where * represents the bond site with the carbon (C) adjacent to the oxygen (O) in the ether bond.
• the inclusion of the (a-1) component in the (A) component allows the (C) component described below to be dissolved better.
• the (a-1) component may be one type alone or two or more types in combination.
• the (a-1) component is not particularly limited, but examples thereof include aliphatic hydrocarbon solvents.
• the aliphatic hydrocarbon solvent refers to a solvent that is an aliphatic hydrocarbon.
• the aliphatic hydrocarbon may be a chain hydrocarbon, a cyclic hydrocarbon, or a compound consisting of a combination of a chain hydrocarbon group and a cyclic hydrocarbon group.
• the (a-1) component is preferably an aliphatic hydrocarbon solvent.
• the (a-1) component preferably contains an aliphatic hydrocarbon solvent.
• the (A) component preferably contains an aliphatic hydrocarbon solvent.
• the aliphatic hydrocarbon solvent may be one type alone or two or more types in combination.
• the aliphatic hydrocarbon solvent preferably contains at least one compound selected from the group consisting of alkanes, cycloalkanes, and cycloalkanes substituted with an alkyl group (alkanes substituted with a cycloalkyl group), and more preferably contains a cycloalkane substituted with an alkyl group.
• the number of carbon atoms in the aliphatic hydrocarbon solvent is not particularly limited, but is preferably 5 to 17, more preferably 6 to 12, even more preferably 7 to 10, and particularly preferably 8.
• component (a-1) examples include, but are not limited to, ethylcyclohexane, cyclohexane, hexane, and isohexane. These may be used alone or in combination.
• Component (a-1) preferably contains at least one compound selected from the group consisting of ethylcyclohexane, cyclohexane, hexane, and isohexane, and more preferably contains ethylcyclohexane.
• the (A) component contains the (a-2) component, which can dissolve the (B) component described later better and can further improve the peelability.
• the (a-2) component may be one type alone or two or more types in combination.
• the (a-2) component is not particularly limited, but examples thereof include alcohol-based solvents, ether-based solvents, and acetone.
• the (a-2) component preferably contains an alcohol-based solvent and/or an ether-based solvent. That is, the (a-2) component preferably contains an alcohol-based solvent, an ether-based solvent, or a combination thereof. From the same viewpoint, the (a-2) component preferably contains an ether-based solvent.
• the (a-2) component may consist of only an alcohol-based solvent, or may consist of only an ether-based solvent.
• the (A) component preferably contains an alcohol-based solvent and/or an ether-based solvent. That is, the (A) component preferably contains an alcohol-based solvent, an ether-based solvent, or a combination thereof.
• ether-based solvent refers to a solvent that is a compound composed of an ether bond and a hydrocarbon group.
• the ether-based solvent may be used alone or in combination of two or more types.
• the ether-based solvent preferably includes a compound composed of an ether group and a non-aromatic hydrocarbon group, and more preferably includes a compound composed of an ether group and a saturated hydrocarbon group.
• the ether-based solvent may have a cyclic ether structure or may not have a cyclic ether structure.
• the ether-based solvent preferably includes a compound having a cyclic ether structure, and more preferably includes a combination of a compound having a cyclic ether structure and a compound not having a cyclic ether structure.
• the compound having a cyclic ether structure may be used alone or in combination of two or more types.
• the compound not having a cyclic ether structure may be used alone or in combination of two or more types.
• the number of carbon atoms in the ether-based solvent is not particularly limited, but is preferably 3 to 8, more preferably 3 to 6, and even more preferably 3 to 4.
• the number of ether groups in one molecule of the ether-based solvent is not particularly limited, but is preferably 1 to 4, more preferably 1 to 3, and even more preferably 2 to 3.
• the alcohol-based solvent refers to a solvent that is a compound selected from the group consisting of compounds composed of a hydroxyl group and a hydrocarbon group, and compounds composed of a hydroxyl group, a hydrocarbon group, and an ether bond.
• the alcohol-based solvent may be used alone or in combination of two or more types.
• the alcohol-based solvent preferably contains a compound composed of a hydroxyl group and a hydrocarbon group, and more preferably contains a compound composed of a hydroxyl group and a saturated hydrocarbon group.
• the alcohol-based solvent further preferably contains a compound composed of a hydroxyl group and a linear and/or branched saturated hydrocarbon group, and even more preferably contains a compound composed of a hydroxyl group and a linear or branched saturated hydrocarbon group.
• the alcohol-based solvent particularly preferably contains a compound composed of a hydroxyl group and a branched saturated hydrocarbon group.
• the number of carbon atoms in the alcohol-based solvent is not particularly limited, but is preferably 1 to 10, more preferably 1 to 5, even more preferably 1 to 3, and especially preferably 3.
• the number of hydroxyl groups in one molecule of the alcohol-based solvent is not particularly limited, but is preferably 1 to 6, more preferably 1 to 2, and even more preferably 1. It is preferable that the alcohol-based solvent does not have an ether group in the molecule.
• the (a-2) component examples include, but are not limited to, methanol, ethanol, ethylene glycol, methylal, tetrahydrofuran, 1,3-dioxolane, isopropyl alcohol, acetone, and diglyme. These may be used alone or in combination.
• the (a-2) component preferably contains at least one compound selected from the group consisting of methanol, ethanol, ethylene glycol, methylal, tetrahydrofuran, 1,3-dioxolane, isopropyl alcohol, and diglyme.
• the (a-2) component more preferably contains at least one compound selected from the group consisting of methylal, tetrahydrofuran, 1,3-dioxolane, and isopropyl alcohol.
• the (a-2) component more preferably contains at least one compound selected from the group consisting of methylal and 1,3-dioxolane, and even more preferably contains methylal and 1,3-dioxolane. It is more preferable that the (a-2) component contains methylal, tetrahydrofuran, and 1,3-dioxolane, or contains methylal, 1,3-dioxolane, and isopropyl alcohol.
• the (a-2) component may consist only of methylal, tetrahydrofuran, and 1,3-dioxolane, or may consist only of methylal, 1,3-dioxolane, and isopropyl alcohol.
• Component (A) may be a commercially available product or a synthetic product.
• the mass ratio of the (a-1) component to the (a-2) component is not particularly limited, but is preferably 10 to 50: 50 to 90, based on the total (100) of the (a-1) component and the (a-2) component.
• the mass ratio of the (a-1) component to the (a-2) component is not particularly limited, but is preferably 10 to 50: 90 to 50 parts by mass, based on the total of the (a-1) component and the (a-2) component being 100 parts by mass.
• the mass ratio of the (a-1) component to the (a-2) component is more preferably 10 to 40: 90 to 60 parts by mass, based on the total of the (a-1) component and the (a-2) component being 100 parts by mass.
• the mass ratio of the (a-1) component to the (a-2) component is more preferably 10 to 35 parts by mass: 90 to 65 parts by mass, where the total of the (a-1) component and the (a-2) component is 100 parts by mass.
• the (A) component is composed of only the (a-1) component and the (a-2) component, it is particularly preferable that the mass ratio of the (a-1) component to the (a-2) component satisfies these ranges.
• the amount of the (a-1) component represents the total amount of these.
• the amount of the (a-2) component represents the total amount of these.
• the preferred range of the ratio of the amount (mass) of the (a-1) component to the (a-2) component added in the method for producing a release agent described later is also the same as the range of the mass ratio of the (a-1) component to the (a-2) component shown above.
• the content of component (A) is not particularly limited, but taking into consideration ease of application and other aspects of handling, it is preferably more than 50% by mass and not more than 95% by mass, more preferably 70% by mass or more and not more than 90% by mass, and even more preferably 80% by mass or more and not more than 90% by mass, relative to the entire release agent (total mass of release agent).
• the amount of component (A) refers to the total amount of these.
• Component (B) is a thickener that is solid at 25° C. Component (B) acts to further improve the viscosity of the release agent by dissolving it in component (A). Component (B) also acts to further improve the handleability of the release agent when it is applied, from the viewpoint of further suppressing the flowability.
• the melting point of component (B) is not particularly limited, but is preferably 30°C or higher. Preferred examples of the melting point range of component (B) include 30°C or higher and 300°C or lower, 30°C or higher and 200°C or lower, and 30°C or higher and 100°C or lower, but the melting point of component (B) is not limited to values within these ranges.
• the melting point of component (B) can be measured using a differential scanning calorimeter (DSC).
• the (B) component is not particularly limited, but examples thereof include polymers and fumed silica.
• the polymer used as the (B) component is not particularly limited, but examples thereof include thermoplastic resins and elastomers.
• the (B) component may be used alone or in combination of two or more.
• the (B) component may be used alone or in combination of two or more.
• the (B) component preferably includes at least one selected from the group consisting of thermoplastic resins and elastomers, and preferably includes a thermoplastic resin.
• Thermoplastic resins are not particularly limited, but examples include (meth)acrylic resins and cellulose-based resins.
• (meth)acrylic resin is a general term indicating both acrylic resin and methacrylic resin.
• (meth)acryloyl group is a general term indicating both acryloyl group and methacryloyl group.
• (co)polymer is a general term indicating both homopolymer and copolymer.
• the (meth)acrylic resin refers to a (co)polymer in which the monomer for constituting the (co)polymer contains a monomer having a (meth)acryloyl group.
• the (meth)acrylic resin is preferably a (co)polymer in which the number of moles of the monomer having a (meth)acryloyl group (the total number of moles when two or more monomers having a (meth)acryloyl group are present) is the largest among the monomers for constituting the (co)polymer.
• the ratio of the number of moles of the monomer having a (meth)acryloyl group (the total number of moles when two or more monomers having a (meth)acryloyl group are present) to the total number of moles of the monomers for constituting the (meth)acrylic resin is not particularly limited, but is preferably 50 mol% or more, more preferably 80 mol% or more, and even more preferably 90 mol% or more (upper limit 100 mol%).
• the monomer for constituting the (meth)acrylic resin may be composed only of a monomer having a (meth)acryloyl group.
• a (meth)acrylic resin in which the number of moles of monomers having an acryloyl group (the total number of moles when two or more monomers having an acryloyl group are present) among the monomers for constituting the (meth)acrylic resin is greater than the number of moles of monomers having a methacryloyl group (the total number of moles when two or more monomers having a methacryloyl group are present).
• a (meth)acrylic resin in which the number of moles of monomers having an acryloyl group (the total number of moles when two or more monomers having an acryloyl group are present) among the monomers for constituting the (meth)acrylic resin is less than or equal to the number of moles of monomers having a methacryloyl group (the total number of moles when two or more monomers having a methacryloyl group are present).
• the ratio of the number of moles of monomers having an acryloyl group (the total number of moles when two or more types of monomers having an acryloyl group are present) to the total number of moles of monomers constituting the acrylic resin is not particularly limited, but is preferably 50 mol% or more, more preferably 80 mol% or more, and even more preferably 90 mol% or more (upper limit 100 mol%).
• the monomers constituting the acrylic resin it is preferable that the number of moles of monomers having an acryloyl group (the total number of moles when two or more types of monomers having an acryloyl group are present) is the largest.
• the monomers constituting the acrylic resin may consist only of monomers having an acryloyl group.
• the ratio of the number of moles of monomers having a methacryloyl group (the total number of moles when two or more monomers having a methacryloyl group are present) to the total number of moles of monomers constituting the methacrylic resin is not particularly limited, but is preferably 50 mol% or more, more preferably 80 mol% or more, and even more preferably 90 mol% or more (upper limit 100 mol%).
• the monomers constituting the methacrylic resin it is preferable that the number of moles of monomers having a methacryloyl group (the total number of moles when two or more monomers having a methacryloyl group are present) is the largest.
• the monomers constituting the methacrylic resin may consist only of monomers having a methacryloyl group.
• the monomer having a (meth)acryloyl group for constituting the (meth)acrylic resin preferably contains a monomer having a (meth)acryloyloxy group, and more preferably consists of only a monomer having a (meth)acryloyloxy group.
• the (meth)acryloyloxy group is a general term that refers to both an acryloyloxy group and a methacryloyloxy group.
• (meth)acrylic is a general term indicating both acrylic and methacrylic.
• Monomers having a (meth)acryloyl group for constituting a (meth)acrylic resin are not particularly limited, but examples thereof include (meth)acrylic acid, (meth)acrylates, (meth)acrylic acid esters, (meth)acrylamide, and N-methylol (meth)acrylamide.
• (Meth)acrylic acid esters are not particularly limited, but examples thereof include (meth)acrylic acid alkyl esters.
• Examples of (meth)acrylic acid alkyl esters include, but are not limited to, methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, t-butyl (meth)acrylate, n-pentyl (meth)acrylate, n-hexyl (meth)acrylate, cyclohexyl (meth)acrylate, n-heptyl (meth)acrylate, n-octyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, nonyl (meth)acrylate, decyl (meth)acrylate, and dodecyl (meth)acrylate. These may be used alone or in combination of two or more.
• Monomers other than the monomer having a (meth)acryloyl group for constituting the (meth)acrylic resin are not particularly limited as long as they are monomers polymerizable with the monomer having a (meth)acryloyl group.
• monomers polymerizable with the monomer having a (meth)acryloyl group include acrylonitrile, styrene, ⁇ -methylstyrene, alkyl vinyl ether, aminoethyl vinyl ether, vinyl chloride, vinyl acetate, vinyl propionate, and ethylene. These may be used alone or in combination of two or more.
• the monomer for forming the (meth)acrylic resin preferably contains a (meth)acrylic acid ester, more preferably contains a (meth)acrylic acid alkyl ester, even more preferably contains a methacrylic acid alkyl ester, and is particularly preferably a methacrylic acid alkyl ester from among the (meth)acrylic acid alkyl esters exemplified above.
• the (meth)acrylic resin may be used alone or in combination of two or more types. Among (meth)acrylic resins, methacrylic resin is preferred.
• Component (B) preferably contains a (meth)acrylic resin, and more preferably contains a methacrylic resin.
• the (meth)acrylic resin is not particularly limited, but examples thereof include poly(meth)acrylic acid, poly(meth)acrylates, poly(meth)acrylic acid esters (e.g., polyacrylic acid alkyl esters, polymethacrylic acid alkyl esters, etc.), acrylic acid ester-methacrylic acid ester copolymers (e.g., acrylic acid alkyl ester-methacrylic acid alkyl ester copolymers, etc.). These may be used alone or in combination of two or more.
• Cellulose-based resins are not particularly limited, but examples include methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, etc. These may be used alone or in combination of two or more.
• the (B) component preferably contains a (meth)acrylic resin and/or a cellulose-based resin, preferably contains a (meth)acrylic resin and/or a hydroxypropyl cellulose, more preferably contains a (meth)acrylic resin, and even more preferably contains a methacrylic resin.
• the (B) component more preferably contains at least one compound selected from the group consisting of polymethacrylic acid, polymethacrylates, polymethacrylates, and acrylate-methacrylate copolymers (wherein the ratio of the number of moles of methacrylate to the total number of moles of monomers constituting the copolymer is 50 mol% or more).
• the (B) component more preferably contains at least one compound selected from the group consisting of polymethacrylic acid, polymethacrylates, polymethacrylate alkyl esters, and acrylate-methacrylate alkyl ester copolymers (wherein the ratio of the number of moles of methacrylate to the total number of moles of monomers constituting the copolymer is 50 mol% or more).
• the (B) component contains at least one compound selected from the group consisting of polymethacrylic acid alkyl esters and alkyl acrylate-alkyl methacrylic acid ester copolymers (wherein the ratio of the number of moles of alkyl methacrylate to the total number of moles of monomers constituting the copolymer is 50 mol% or more). It is more preferable that the (B) component contains polymethacrylic acid alkyl esters, and it is particularly preferable that the (B) component contains polymethyl methacrylate.
• the (B) component may be a (meth)acrylic resin and/or hydroxypropyl cellulose. That is, the (B) component may be a (meth)acrylic resin, hydroxypropyl cellulose, or a combination thereof.
• the weight average molecular weight of component (B) is not particularly limited. From the viewpoint of providing the release agent with good viscosity, the weight average molecular weight of component (B) is preferably 10,000 to 20 million, more preferably 10,000 to 10 million, even more preferably 10,000 to 5 million, and particularly preferably 20,000 to 4 million.
• the weight average molecular weight of component (B) may be, for example, 20,000 to 1 million, or 20,000 to 400,000. The range is the same as the weight average molecular weight of component (B) above.
• the weight average molecular weight of component (B) can be a value measured by gel permeation chromatography (GPC) using polystyrene as a standard substance.
• component (B) is not particularly limited, but component (B) is preferably a powder.
• powder refers to an aggregate of particles.
• Examples of the shape of component (B) include bead-like (spherical) and irregular shapes. Examples of irregular shapes include irregular shapes obtained by pulverization. Among these, the shape of component (B) is preferably bead-like. In one embodiment, component (B) is preferably in the form of bead-like particles.
• Component (B) may be a commercially available product or a synthetic product. There are no particular limitations on commercially available products of component (B), but examples include the Dianale (registered trademark) series (e.g., BR-95, etc.) manufactured by Mitsubishi Chemical Corporation, commercially available fumed silica, etc.
• the ratio of the mass of component (B) to the mass of component (A) is not particularly limited, but may be, for example, more than 0 parts by mass and 20 parts by mass or less of component (B) per 100 parts by mass of component (A).
• the mass ratio of the (B) component/(a-2) component is preferably 20 parts by mass or less of the (B) component to 100 parts by mass of the (a-2) component (for example, more than 0 parts by mass and 20 parts by mass or less of the (B) component to 100 parts by mass of the (a-2) component), more preferably 0.1 parts by mass or more and 15 parts by mass or less of the (B) component to 100 parts by mass of the (a-2) component.
• the mass ratio of the (B) component/(a-2) component be 20 parts by mass or less/100 parts by mass, the fluidity of the release agent is further suppressed, and the release agent is less likely to run off after application to the nail. In addition, a more uniform coating film can be formed.
• the amount of (a-2) component refers to the total amount of these.
• the amount of (B) component refers to the total amount of these.
• the compound that is non-volatile at 25°C may be a compound that is generally considered to be non-volatile at atmospheric pressure and 25°C.
• the compound that is non-volatile at 25°C is preferably a compound that does not lose weight even when left at 25°C for 1 hour.
• the compound that is non-volatile at 25°C may be a compound that does not experience a significant weight loss even when left at 25°C for 1 hour.
• the weight loss rate represents the ratio (wt%) of the amount of weight loss to the weight before leaving (i.e., the weight before leaving minus the weight after leaving)
• the leaving at 25°C for 1 hour is performed in an open system at atmospheric pressure.
• the relative humidity when leaving at 25°C for 1 hour is preferably 40% RH or more and 50% RH or less, and may be, for example, 45% RH.
• a compound that does not have a polar group in the molecule is called a hydrophobic compound.
• the polar group include an ether bond and a hydroxyl group.
• the (C) component may be used alone or in combination.
• the (C) component is not particularly limited, but may be, for example, wax.
• the (C) component preferably contains wax, and more preferably contains paraffin wax.
• the melting point of the (C) component is not particularly limited, but may be, for example, 30°C or higher, 40°C or higher, 30°C or higher and 100°C or lower, or 40°C or higher and 60°C or lower.
• the melting point of the (C) component can be measured, for example, in accordance with the method for measuring the melting point of wax specified in JIS K2235:2022.
• the melting point of the (C) component can be measured, for example, in accordance with the method for measuring the melting point of paraffin wax specified in JIS K2235:2022.
• the (C) component is preferably a paraffin wax, which is a type of wax.
• the paraffin wax may be, for example, a wax whose main component is a hydrocarbon having 20 or more carbon atoms, which is a type of hydrocarbon compound.
• the paraffin wax may be, for example, a wax whose main component is a hydrocarbon having 20 to 40 carbon atoms.
• the paraffin wax may be, for example, a wax whose main component is an alkane having 20 or more carbon atoms.
• the carbon number of the paraffin wax is not particularly limited, but may be, for example, 20 or more and 40 or less.
• the paraffin wax may be used alone or in combination of two or more types.
• the (C) component may contain at least one wax selected from the group consisting of the paraffin waxes listed above.
• Component (C) is preferably a paraffin wax having a melting point of 30°C or higher, and more preferably a paraffin wax having a melting point of 40°C or higher.
• Component (C) may be a paraffin wax having a melting point of 30°C or higher and 100°C or lower, or may be a paraffin wax having a melting point of 40°C or higher and 60°C or lower.
• Component (C) may be a commercially available product or a synthetic product. There are no particular limitations on the commercially available product of component (C), but examples include Paraffin Wax-115, Paraffin Wax-120, Paraffin Wax-125, Paraffin Wax-130, Paraffin Wax-135, Paraffin Wax-140, Paraffin Wax-145, and Paraffin Wax-150 manufactured by Nippon Seiro Co., Ltd.
• the ratio of the mass of component (C) to the mass of component (A) is not particularly limited, but may be, for example, more than 0 parts by mass and up to 40 parts by mass of component (C) per 100 parts by mass of component (A).
• the ratio of the mass of the (C) component to the mass of the (a-1) component is preferably 40 mass or less/100 parts by mass, more preferably 0.1 to 35 mass/100 parts by mass. That is, the mass ratio of the (C) component/(a-1) component is preferably 40 mass or less of the (C) component per 100 parts by mass of the (a-1) component (for example, the (C) component is more than 0 mass parts and 40 mass parts or less per 100 parts by mass of the (a-1) component), more preferably 0.1 mass parts or more and 35 mass parts or less of the (C) component per 100 parts by mass of the (a-1) component.
• the mass ratio of the (C) component/(a-1) component be 40 mass or less/100 parts by mass, the volatility of the solvent can be further suppressed. In addition, the appearance of the release agent maintains transparency, and the components become more easily compatible, which leads to further improvement in the release property.
• the amount of (a-1) component refers to the total amount of these.
• the amount of (C) component refers to the total amount of these.
• the stripping agent preferably further contains a pH adjuster.
• the pH adjuster may be in the form of a compound or in the form of a liquid containing water.
• the pH adjuster is not particularly limited, but may include, for example, a base; a liquid containing at least one compound selected from the group consisting of an acid and a base and water (preferably, a liquid containing one or more bases and water); pH-adjusted water; and the like.
• the base is not particularly limited, but may include, for example, ammonia, sodium hydroxide, potassium hydroxide, and the like.
• the liquid containing one or more bases and water is not particularly limited, but may include, for example, a liquid containing at least one base selected from the group consisting of ammonia, sodium hydroxide, and potassium hydroxide, and water.
• the liquid containing at least one base selected from the group consisting of ammonia, sodium hydroxide, and potassium hydroxide, and water is not particularly limited, but may include, for example, an aqueous ammonia solution, an aqueous sodium hydroxide solution, an aqueous potassium hydroxide solution, and the like.
• the pH adjuster may be used alone or in combination.
• the pH adjuster preferably further contains pH-adjusted water as component (D).
• the stripping agent preferably further contains pH-adjusted water as component (D).
• the (D) component may be used alone or in combination.
• the pH-adjusted water may be a liquid containing water and a compound other than water.
• the compound other than water contained in the pH-adjusted water is not particularly limited, and examples thereof include bases such as ammonia, sodium hydroxide, and potassium hydroxide; acids; and the like.
• the compound other than water contained in the pH-adjusted water may be one type alone or two or more types in combination.
• the compound other than water contained in the pH-adjusted water preferably contains a base, more preferably contains at least one type selected from the group consisting of ammonia, sodium hydroxide, and potassium hydroxide, and even more preferably contains ammonia.
• the pH-adjusted water may be added in a form in which water and the compound other than water are added separately, or may be added as a liquid containing water and a compound other than water.
• the pH-adjusted water may be alkaline electrolyzed water.
• alkaline electrolyzed water may be alkaline water obtained from the cathode side by electrolyzing water to which an electrolyte has been added.
• the alkaline electrolyzed water contains hydroxide ions.
• the alkaline electrolyzed water may further contain ions that may be generated from the electrolyte added during electrolysis in the preparation of the alkaline electrolyzed water.
• the alkaline electrolyzed water may further contain alkali metal ions, such as potassium ions and sodium ions.
• the alkali metal ions may be used alone or in combination of two or more types.
• the alkaline electrolyzed water may be used alone or in combination of two or more types.
• the pH adjuster preferably contains at least one selected from the group consisting of an acid, a base, and alkaline electrolyzed water, more preferably contains at least one selected from the group consisting of a base and alkaline electrolyzed water, even more preferably contains at least one selected from the group consisting of ammonia, sodium hydroxide, potassium hydroxide, and alkaline electrolyzed water, even more preferably contains at least one selected from the group consisting of ammonia and alkaline electrolyzed water, and is particularly preferably alkaline electrolyzed water.
• the pH adjuster may include a combination of alkaline electrolyzed water and a pH-adjusted water other than alkaline electrolyzed water.
• Component (D) may include a combination of alkaline electrolyzed water and a pH-adjusted water other than alkaline electrolyzed water.
• Component (D) may include a combination of alkaline electrolyzed water and a liquid containing at least one compound selected from the group consisting of acids and bases and water (preferably, a liquid containing one or more bases and water).
• Component (D) may include a combination of alkaline electrolyzed water and an aqueous solution of a base (e.g., an aqueous ammonia solution, an aqueous sodium hydroxide solution, and/or an aqueous potassium hydroxide solution).
• a base e.g., an aqueous ammonia solution, an aqueous sodium hydroxide solution, and/or an aqueous potassium hydroxide solution.
• the pH of the entire stripping agent can be increased, preferably to a value greater than 7. It is also preferable to adjust the pH to further improve stripping properties.
• component (D) include, but are not limited to, an aqueous ammonia solution, an alkaline electrolytic water, an aqueous sodium hydroxide solution, and an aqueous potassium hydroxide solution. These may be used alone or in combination.
• the (D) component preferably contains at least one selected from the group consisting of an aqueous ammonia solution, alkaline electrolyzed water, an aqueous sodium hydroxide solution, and an aqueous potassium hydroxide solution, more preferably contains at least one selected from the group consisting of an aqueous ammonia solution and alkaline electrolyzed water, and even more preferably contains alkaline electrolyzed water.
• the pH of component (D) is not particularly limited, but is preferably greater than 7, and more preferably greater than 7 and equal to or less than 14.
• the pH of component (D) may be greater than 7 and equal to or less than 12, greater than 7 and equal to or less than 10, or greater than 7 and equal to or less than 9.
• the pH of component (D) can be evaluated using pH test paper or a pH meter.
• the pH adjuster may be a commercially available product or a synthetic product.
• pH-adjusted water may be prepared and the prepared pH-adjusted water may be used, or a commercially available product may be used.
• a commercially available product There are no particular limitations on the commercially available product.
• the commercially available alkaline electrolyzed water There are no particular limitations on the commercially available alkaline electrolyzed water, but an example of such a product is ThreeBond 6658 manufactured by ThreeBond Co., Ltd.
• the content of the pH adjuster in the stripping agent is not particularly limited, and may be any amount that provides the desired pH of the stripping agent.
• the content of the pH adjuster in the stripping agent is preferably an amount that provides a pH value within the pH range of the stripping agent described below.
• the stripping agent contains a base
• the content of the base is not particularly limited, but is preferably 0.01% by mass or more and 10.0% by mass or less, and more preferably 0.05% by mass or more and 5.0% by mass or less, relative to the entire stripping agent (relative to the total mass of the stripping agent).
• the amount of the (A) component refers to the total amount of these.
• the amount of the (D) component refers to the total amount of these.
• the release agent according to one embodiment may further contain an appropriate amount of components other than the above components (A) to (C) and the pH adjuster added as needed, within a range that does not impair the characteristics of the present invention.
• the release agent according to one embodiment may further contain an appropriate amount of additives such as surfactants, leveling agents, and rheology control agents, within a range that does not impair the characteristics of the present invention. It is preferable that the release agent according to one embodiment further contains at least one additive selected from the group consisting of surfactants, leveling agents, and rheology control agents. The appearance, flowability, and drying properties can be adjusted by adding these additives.
• the stripping agent preferably further contains a surfactant.
• the surfactant may be used alone or in combination of two or more.
• the surfactant is not particularly limited, but examples thereof include anionic surfactants having -SO 3 Na and/or -SO 3 NH 4 in the molecule, nonionic surfactants not containing ions in the molecule (do not dissociate into ions even when dissolved in water), cationic surfactants containing a quaternary ammonium salt in the molecule, and amphoteric surfactants containing both anions and cations in the molecule.
• the surfactant is preferably a nonionic surfactant, and more preferably a higher alcohol-based nonionic surfactant.
• the surfactants exemplified above may each be used alone or in combination of two or more.
• the surfactant preferably contains at least one surfactant selected from the group consisting of the surfactants exemplified above, more preferably contains a nonionic surfactant, and even more preferably contains a higher alcohol-based nonionic surfactant.
• the nonionic surfactant is not particularly limited, but examples thereof include polyoxyalkylene alkyl ethers, polyoxyalkylene alkyl phenyl ethers, polyoxyalkylene higher fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, and polyoxyalkylene glycerin fatty acid esters. More specifically, the ionic surfactant is, for example, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene higher fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene glycerin fatty acid esters.
• the higher alcohol-based nonionic surfactant is not particularly limited, but examples thereof include polyoxyalkylene higher alkyl ethers (e.g., polyoxyethylene higher alkyl ethers). These may be used alone or in combination of two or more. It is preferable that the surfactant contains at least one compound selected from the group consisting of the compounds exemplified above.
• the surfactant may be a commercially available product or a synthetic product.
• nonionic surfactants include the Naloacty (registered trademark) series (e.g., CL-40, etc.), Emulmin (registered trademark) series, Sanonic (registered trademark) series, Newpol (registered trademark) series, and Ionet (registered trademark) series manufactured by Sanyo Chemical Industries, Ltd.; and the Leox (registered trademark) series, Leocol (registered trademark) series, Lionol (registered trademark) series, Liponol (registered trademark) series, Lipomaid (registered trademark) series, Leofat (registered trademark) series, Leocon (registered trademark) series, and Cadenax (registered trademark) series manufactured by Lion Specialty Chemicals Co., Ltd.
• the amount of surfactant is not particularly limited, but is preferably 0.01% by mass or more and 1.0% by mass or less, and more preferably 0.05% by mass or more and 0.5% by mass or less, relative to the entire release agent (relative to the total mass of the release agent). When two or more types of surfactants are used in combination, the amount of surfactant refers to the total amount of these.
• the stripping agent preferably further contains water.
• the water is not particularly limited, and for example, distilled water, ion-exchanged water, tap water, alkaline electrolytic water, etc. can be used. These may be used alone or in combination of two or more. The same applies to the water used as a raw material for the pH-adjusted water, which is the component (D).
• the stripping agent may contain water as a part of the pH adjuster, or may contain water as a part of the component (D).
• the release agent contains components (A) to (C) and preferably satisfies at least one condition selected from the group consisting of condition (i) and condition (ii): Condition (i): The pH of the stripping agent is greater than 7; Condition (ii): the stripping agent is composed of only five components, namely, the components (A) to (C), a pH adjuster, and a surfactant; (A) component: solvent, (B) component: a thickener that is solid at 25°C, Component (C): A hydrophobic compound that is nonvolatile at 25°C.
• the stripping agent preferably consists of only five components: components (A) to (C), a pH adjuster, and a surfactant, taking into consideration the appearance and/or the compatibility of components (B) and (C).
• the pH adjuster preferably contains pH-adjusted water as component (D).
• the release agent preferably comprises only five components consisting of components (A) to (D) and a surfactant; (A) component: solvent, (B) component: a thickener that is solid at 25°C, Component (C): a hydrophobic compound that is nonvolatile at 25°C, (D) Component: pH-adjusted water.
• the pH of the stripping agent according to one embodiment (the pH of the entire stripping agent) is not particularly limited, but is preferably greater than 7, more preferably greater than 7 and not greater than 14, and even more preferably greater than 7 and not greater than 12.
• the pH of the stripping agent according to one embodiment may be greater than 7 and not greater than 10, or greater than 7 and not greater than 9.
• the pH of the stripping agent can be evaluated using pH test paper or a pH meter (pH meter), etc.
• Another aspect of the present invention relates to a stripping agent that includes component (A), component (B), and wax (preferably, wax containing paraffin wax) and has a pH greater than 7.
• Another aspect of the present invention relates to a stripping agent that includes only five components: component (A), component (B), wax (preferably, wax containing paraffin wax), a pH adjuster, and a surfactant.
• component (A), component (B), wax preferably, wax containing paraffin wax
• a pH adjuster preferably, wax preferably, wax containing paraffin wax
• surfactant preferably, wax containing paraffin wax
• Each component included in the stripping agent according to these aspects is the same as described above.
• the properties of the stripping agent according to these aspects, such as pH, are the same as described above.
• the wax is not particularly limited, but examples thereof include the same wax as described above for component (C).
• the ratio of the mass of the wax to the mass of component (a-1) is not particularly limited, but examples thereof include the same range as
• ⁇ Method of producing the release agent> Another aspect of the present invention is not particularly limited, but it can be said to relate to a method for producing a release agent, which includes mixing components (A) to (C); (A) component: solvent, (B) component: a thickener that is solid at 25°C, Component (C): A hydrophobic compound that is nonvolatile at 25°C.
• the method for producing the release agent according to each of the above aspects is not particularly limited, but for example, the production method according to this aspect is preferred.
• the manufacturing method preferably further includes mixing a pH adjuster in addition to the components (A) to (C).
• the pH adjuster preferably includes pH-adjusted water as the component (D).
• the manufacturing method according to one embodiment preferably includes further mixing pH-adjusted water as component (D) in addition to components (A) to (C).
• the manufacturing method according to this embodiment may also include further mixing components other than the above components (A) to (D).
• the manufacturing method according to one embodiment is preferably a method for manufacturing a stripping agent having a pH greater than 7.
• the manufacturing method according to this embodiment preferably includes further mixing a pH adjuster in addition to the components (A) to (C).
• the manufacturing method according to this embodiment may include further mixing a component other than the components (A) to (C) and the pH adjuster.
• the manufacturing method according to this embodiment preferably includes further mixing pH-adjusted water as component (D) in addition to the components (A) to (C).
• the manufacturing method according to this embodiment may include further mixing a component other than the above components (A) to (D).
• the release agent according to each of the above aspects is preferably produced by the production method according to these aspects.
• the release agent according to one embodiment may further include mixing an additive such as a surfactant, a leveling agent, or a rheology control agent, within a range that does not impair the characteristics of the present invention.
• the production method according to one embodiment preferably further includes mixing at least one additive selected from the group consisting of a surfactant, a leveling agent, and a rheology control agent. It is more preferable that the production method according to one embodiment further includes mixing a surfactant.
• a preferred manufacturing method includes mixing component (A), component (D), and other components as necessary, further adding component (B) to the resulting mixture, and then further adding component (C) to the resulting mixture.
• a preferred manufacturing method includes mixing component (A), component (D), and a surfactant, further adding component (B) to the resulting mixture, and then further adding component (C) to the resulting mixture.
• Preferable examples of the range of the amount of the (A) component added include the same range as the range of the content of the (A) component shown in the description of the stripping agent above.
• Preferable examples of the range of the ratio of the amount of the (B) component added (mass) to the amount of the (a-2) component added (mass) include the same range as the mass ratio of the (B) component/(a-2) component shown in the description of the stripping agent above.
• Preferable examples of the range of the ratio of the amount of the (C) component added (mass) to the amount of the (a-1) component added (mass) include the same range as the mass ratio of the (C) component/(a-1) component shown in the description of the stripping agent above.
• Preferable examples of the amount of the pH adjuster added are the same as the content of the pH adjuster shown in the description of the stripping agent above.
• Preferable examples of the amount of the (D) component added are the same as the description of the stripping agent above.
• Preferable examples of the amount of the surfactant added include the same range as the content of the surfactant shown in the description of the stripping agent above.
• the pH of the stripping agent produced by the manufacturing methods according to these embodiments (the pH of the entire stripping agent) is the same as that described for the stripping agents according to the above embodiments.
• Another aspect of the present invention may be said to relate to a method for producing a release agent, which includes, but is not limited to, mixing component (A), component (B) and wax (preferably paraffin wax); (A) component: solvent, Component (B): A thickener that is solid at 25°C.
• the components used for mixing are the same as those described above.
• the properties of the release agent produced, such as pH are the same as those described above.
• the method of mixing the components in the manufacturing method according to this embodiment is the same as those described above.
• the wax is not particularly limited, but examples thereof include the same wax as described above for component (C).
• the ratio of the amount (mass) of wax added to the amount (mass) of component (a-1) added is not particularly limited, but examples thereof include the same range as the ratio of the mass of component (C) to the mass of component (a-1) above.
• the method of manufacturing the release agent according to each of the above embodiments is not particularly limited, but for example, the manufacturing method according to this embodiment is preferred.
• the use of the release agent according to each of the above-mentioned embodiments and the release agent produced by the manufacturing method according to each of the above-mentioned embodiments is not particularly limited.
• the release agent according to each of the above-mentioned embodiments and the release agent produced by the manufacturing method according to each of the above-mentioned embodiments are preferably used for applied gel nails (gel nails after application). That is, the release agent according to each of the above-mentioned embodiments and the release agent produced by the manufacturing method according to each of the above-mentioned embodiments are preferably used in the application of removing gel nails after application.
• the release agent according to each of the above-mentioned embodiments and the release agent produced by the manufacturing method according to each of the above-mentioned embodiments are more preferably used in the application including removing applied base coats, and even more preferably used in the application of removing applied base coats.
• Another aspect of the present invention can be said to be a method for removing gel nails after application, using a remover according to each of the above aspects or a remover manufactured by the manufacturing method according to each of the above aspects.
• Methods for removing gel nails after application generally include a method of suppressing solvent evaporation using a sheet such as aluminum foil that suppresses solvent evaporation, and/or a method of extending the time for immersion in the solvent using a material such as cotton or a rag that is impregnated with the solvent.
• a remover according to each of the above aspects it is possible to remove gel nails after application without necessarily using a sheet that suppresses solvent evaporation and/or a material that impregnates the solvent.
• the method for removing gel nails after application uses a remover according to each of the above aspects or a remover manufactured by the manufacturing method according to each of the above aspects, and does not use a sheet that suppresses solvent evaporation and/or a material that impregnates the solvent.
• the method for removing gel nails after application preferably includes applying a release agent according to each of the above aspects or a release agent manufactured by a manufacturing method according to each of the above aspects to the gel nail after application.
• the method for removing gel nails after application according to this embodiment preferably includes applying a release agent according to each of the above aspects or a release agent manufactured by a manufacturing method according to each of the above aspects to the gel nail after application and then leaving it for a specific time.
• the method for removing gel nails after application preferably includes, when the gel nail includes at least one layer selected from the group consisting of a color coat layer and a top coat layer in addition to a base coat layer, scraping off at least one layer selected from the group consisting of a color coat layer and a top coat layer to expose the base coat, and applying a release agent according to each of the above aspects or a release agent manufactured by a manufacturing method according to each of the above aspects to the exposed base coat.
• the method for removing gel nails after application according to this embodiment more preferably includes applying a release agent according to each of the above aspects or a release agent manufactured by a manufacturing method according to each of the above aspects to the exposed base coat and then leaving it for a specific time.
• the specific time is not particularly limited and may be, for example, 5 minutes to 1 hour, and is particularly preferably 5 to 30 minutes.
• the application is also not particularly limited and may be performed once or multiple times.
• the method of applying the release agent according to each of the above embodiments is not particularly limited.
• the method of applying the release agent produced by the manufacturing method according to each of the above embodiments is not particularly limited. Examples of application methods include removing the release agent from a container filled with the release agent using a brush and/or a cotton swab, and applying the release agent using the brush and/or the cotton swab.
• the stripping agent will also be referred to simply as the "composition.”
• ⁇ Component (C) Hydrophobic compound that is nonvolatile at 25° C.> Paraffin wax with a melting point of 48°C (Paraffin Wax-115, Nippon Seiro Co., Ltd.).
• compositions (strippers) of Examples 1 to 3 and Comparative Examples 1 to 4 were prepared. First, component (A), component (D) and other components (surfactants) were weighed and added to a beaker, and the contents of the beaker were then stirred for 10 minutes. Then, component (B) was weighed and added to the beaker, and the contents of the beaker were stirred for 10 minutes. Furthermore, component (C) was weighed and added to the beaker, and the contents of the beaker were stirred for 10 minutes to obtain the compositions. Detailed preparation amounts were as shown in Table 1. All values in Table 1 are expressed in parts by mass. A blank space in Table 1 indicates that the component was not used.
• compositions of Examples 1 to 3 and Comparative Examples 1 to 4 were subjected to pH checks (overall stripping agent), appearance checks, flow checks, drying checks, and stripping checks. The results are summarized in Table 2.
• a base coat was formed by applying a PREGEL® base coat made by Prianfa Co., Ltd. to a wet thickness (thickness before curing) of about 100 ⁇ m to the nails of human fingers and curing the base coat by irradiating it with a nail LED lamp (rated voltage: 100-110 V 50-60 Hz, power consumption: 36 W, wavelength: 350-400 nm) for 30 seconds.
• the PREGEL® base made by Prianfa Co., Ltd. was PREGEL® Excellent Base made by Prianfa Co., Ltd.
• the composition (release agent) obtained above was applied to the entire surface of the base coat, and the condition after 5 seconds was visually checked and the flowability was evaluated according to the following evaluation criteria. If the flowability was "x”, the releaseability check described below was not performed. Therefore, if the flowability was "x”, the releaseability check was indicated as "-”. It is preferable that the flowability be " ⁇ ".
• a base coat was formed by applying a PREGEL® base coat made by Prianfa Co., Ltd. to a wet thickness (thickness before curing) of about 100 ⁇ m to the nails of human fingers and curing the base coat by irradiating it with a nail LED lamp (rated voltage: 100-110 V 50-60 Hz, power consumption: 36 W, wavelength: 350-400 nm) for 30 seconds.
• the PREGEL® base made by Prianfa Co., Ltd. was PREGEL® Excellent Base made by Prianfa Co., Ltd.
• composition (removal agent) obtained above was applied to the entire surface of the base coat, and after one minute, a toothpick was touched to the coating film (composition (removal agent)) and visually checked whether the toothpick was wet or not, and the drying property was evaluated according to the following evaluation criteria. Considering the peelability of the applied gel nail, it is preferable that the drying property is " ⁇ ".
• a color coat and a top coat were formed on the base coat in that order.
• the color coat was formed by applying a color coat composition to the surface of the base coat in the same manner as the application of the base coat (application when forming the base coat) and curing the coating film (color coat composition) under the same conditions as the curing of the base coat (curing when forming the base coat).
• the top coat was formed by applying a top coat composition to the surface of the color coat in the same manner as the application of the base coat (application when forming the base coat) and curing the coating film (top coat composition) under the same conditions as the curing of the base coat (curing when forming the base coat).
• PREGEL registered trademark
• Super Color EX color: pastel peach
• PREGEL registered trademark
• Cangel EX manufactured by Prianfa Co., Ltd. was used as the top coat composition.
• the top coat and color coat were scraped off with a 100-grid nail file to expose the base coat.
• the composition (stripper) obtained above was then applied to the entire surface of the exposed base coat.
• the gel nail base coat was then touched with a metal pusher to check and evaluate its removability according to the following evaluation criteria. Taking into account the working time, a rating of " ⁇ " or " ⁇ " is preferable.
• a gel nail peeling process is essential as a pre-treatment before reapplication.
• a stripping agent according to each aspect of the present invention it is possible to reduce work time and procedures.
• a stripping agent manufactured by a manufacturing method according to each aspect of the present invention it is possible to reduce work time and procedures.
• a stripping method according to one aspect of the present invention it is possible to reduce work time and procedures.

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• 2024
  • 2024-06-27 JP JP2025531526A patent/JPWO2025009473A1/ja active Pending
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