Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D11/00—Inks
  • C09D11/16—Writing inks
  • C09D11/17—Writing inks characterised by colouring agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/0241—Containing particulates characterized by their shape and/or structure
  • A61K8/0254—Platelets; Flakes
• • 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
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • A61K8/8152—Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D11/00—Inks
  • C09D11/16—Writing inks
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
  • A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/06—Preparations for styling the hair, e.g. by temporary shaping or colouring

Definitions

• the present invention uses dyes and plate-shaped pigments with good color development to prevent color separation, and also prevents the plate-shaped pigment from falling off and the dye from being absorbed into the skin, etc., and is easy to apply.
• the present invention relates to a glittering skin marker composition and an applicator for the same.
• Conventional skin marker compositions include, for example, (1) At least one component of ethyl alcohol, isopropyl alcohol, n-propyl alcohol, water, etc. is used as a solvent, and at least one component of glycerin, propylene glycol, polyoxyethylene or its derivative, polyoxypropylene or its derivative is used as a solvent.
• a skin mark ink composition for directly marking human skin which is characterized by adding a low-toxicity food coloring or the like as a conditioner (for example, see Patent Document 1); (2) Using at least one or two or more of ethyl alcohol, isopropyl alcohol, n-propyl alcohol, water, etc.
• An ink composition for skin marks for direct marking on the human skin characterized in that at least one or two or more of the above ingredients are used as adjusting agents, and one or more types of basic dyes are added (for example, see Patent Document 2),
• An aqueous paint composition for use as face paint, body paint, etc. which contains an aqueous isoprene rubber latex having an isoprene rubber component and a colorant (see, for example, Patent Document 5); (6) A skin marker composition containing 1 to 5% by mass of an acidic dye, an aminoalkyl (meth)acrylate copolymer, a water-soluble organic solvent, and water and having a pH of less than 7.0 (for example, Patent Document 6), etc. are known.
• Patent Documents 3 and 4 above describe compositions that can also be used for body paint, and some use pigments as an approach to prevent absorption into the skin, but these documents disclose emulsions for film formation.
• Resins especially acrylic emulsion resins, are used to provide good film-forming properties, and these films have good abrasion resistance, water resistance, etc., resulting in excellent makeup retention.
• these compositions mainly use iron oxide pigments, there is a large difference in specific gravity from the emulsion, so they tend to cause so-called color separation and have problems with stability. .
• Patent Document 5 an attempt is made to eliminate unpleasant sensations such as a "tight feeling" on the skin by using a film-forming synthetic isoprene rubber latex, and dyes are also exemplified here as a coloring material.
• synthetic isoprene rubber latex is used, so it exhibits excellent elasticity and flexibility, but it is thought that the rubber film tends to shrink, causing a "stretching feeling". It is also presumed that it has poor weather resistance against direct sunlight.
• Patent Document 6 by the present applicant solved the problems of Patent Documents 1 to 5, it was not intended to stably contain a tabular (glitter) pigment.
• Patent Documents 7 and 8 also by the present applicant, it is assumed that the ink composition is stored in a direct liquid type ink composition storage unit, that is, the ink composition and a stirring bar are enclosed in the storage unit and used.
• the writing instrument (applicator) was shaken beforehand to uniformly re-disperse the glitter pigment before it was finally written (applied).
• JP-A-55-137175 (Claims, detailed description of the invention, etc.) JP-A-58-154772 (Claims, detailed description of the invention, etc.) JP-A-54-49338 (Claims, detailed description of the invention, etc.) JP-A-54-151139 (Claims, detailed description of the invention, etc.) JP 2019-2002 (Claims, detailed description of the invention, etc.) International Publication No. 2022/091971 (Claims, detailed description of the invention, etc.) JP2011-84661A (Claims, detailed description of the invention, etc.) JP2013-124360A (Claims, detailed description of the invention, etc.)
• the present disclosure is intended to solve these problems in view of the above-mentioned problems and current state of the prior art, and to prevent color separation by using dyes and plate-like pigments with good color development, and to prevent color separation using the plate-like pigments.
• a glossy skin product that prevents shedding and dye absorption into the skin, etc., and can be applied easily without preparatory movements such as shaking, and has excellent visibility of drawn lines regardless of the shade of the skin.
• An object of the present invention is to provide a marker composition and an applicator thereof.
• the present invention contains at least a predetermined amount of an acidic dye, a specific copolymer, a water-soluble organic solvent, and water, and has a pH value of It was found that by simply adding a plate-like pigment to the skin marker composition of Cited Document 6, which is less than a specific value, a typical composition can be obtained, and it can be stably discharged with a cotton-filled writing instrument (applicator). This heading completes this disclosure.
• the skin marker composition of the present disclosure contains at least 0.95 to 4.75% by mass of an acidic dye, an aminoalkyl (meth)acrylate copolymer, a water-soluble organic solvent, a tabular pigment, and water. and has a pH of less than 7.0, and the aminoalkyl (meth)acrylate copolymer is a copolymer polymerized from each monomer selected from each of Group A and Group B below, and It is characterized in that the proportion of monomers in the copolymer is 2 to 15% by mass.
• Group A (meth)ethyl acrylate, methyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, (meth)acrylate sec-butyl acid, tert-butyl (meth)acrylate, n-hexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, isooctyl (meth)acrylate, n-decyl (meth)acrylate, (meth)acrylate ) Isododecyl acrylate, lauryl (meth)acrylate, palmityl (meth)acrylate, stearyl (meth)acrylate, behenyl (meth)acrylate, cyclohexyl (meth)acrylate, benzyl (meth)acrylate, (meth) Isoborn
• cosmetic legal pigments refers to organic synthetic pigments that can be used in pharmaceuticals, quasi-drugs, and cosmetics, as defined by the Ministry of Health, Labor and Welfare in 1996, including Group I (11 types), Group II (47 types), It is classified into Group III (25 types), with a total of 83 types. It is preferable that the water-soluble organic solvent is a lower alcohol having 3 or less carbon atoms.
• the cosmetic amount is a tabular pigment with an average particle size of 1 to 50 ⁇ m.
• the storage part of the filled applicator has a filling porosity of 88 to 96%, and the fibers of the fiber bundle of the applicator preferably have a denier of 2 to 5 denier. be. This denier number is the number of grams (weight) of the fiber of 9000 m, and the thicker the fiber, the larger the value.
• An applicator made of such thick fibers has a large gap between each fiber from the rear end of the applicator to the tip of the applicator, and the gap has many straight sections from the rear end of the applicator to the tip of the applicator. It is.
• a glittering skin marker composition that can be easily applied with a tool and has excellent visibility of drawn lines regardless of the shade of the skin.
• the skin marker composition of the present disclosure includes at least 0.95 to 4.75% by weight of an acidic dye, an aminoalkyl (meth)acrylate copolymer, a water-soluble organic solvent, a tabular pigment, and water, pH is less than 7.0, and the aminoalkyl (meth)acrylate copolymer is a copolymer polymerized from each monomer selected from each of Group A and Group B below, and a monomer of Group B. It is characterized by a ratio of 2 to 15% by mass in the copolymer.
• Group A (meth)ethyl acrylate, methyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, (meth)acrylate sec-butyl acid, tert-butyl (meth)acrylate, n-hexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, isooctyl (meth)acrylate, n-decyl (meth)acrylate, (meth)acrylate ) Isododecyl acrylate, lauryl (meth)acrylate, palmityl (meth)acrylate, stearyl (meth)acrylate, behenyl (meth)acrylate, cyclohexyl (meth)acrylate, benzyl (meth)acrylate, (meth) Isoborn
• Acid dyes used in the present disclosure generally include acid dyes, and preferably at least one acid dye among legal dyes for cosmetics can be used.
• acidic dyes include Red No. 2 (CI16185), Red No. 3 (CI45430), Red No. 102 (CI16255), Red No. 104 (1) (CI45410), and Red No. 105 (1) (CI45440).
• Red No. 106 CI45100
• Yellow No. 4 CI19140
• Yellow No. 5 CI15985
• Green No. 3 CI42053
• Blue No. 1 CI42090
• Blue No. 2 CI73015)
• Red No. 201 CI15850
• Red No. 206 CI15630
• Red No. 227 CI17200
• the (total) content of these acidic dyes is 0.95 to 4.75% by mass (hereinafter, "% by mass” is simply referred to as “%") based on the total amount of the skin marker composition excluding plate-like pigments. , preferably 1 to 3%. If the content of this acidic dye is less than 0.95%, the color development will not be sufficient, while if it exceeds 4.75%, the water resistance will be insufficient and the absorption of the dye into the skin etc. will be insufficient. This is undesirable because it affects
• the aminoalkyl (meth)acrylate copolymer used in the present disclosure is a component contained in order to prevent color separation even when acidic dyes with good color development are used, and also to prevent absorption of the dye into the skin, etc. At least one of 2-(dimethylamino)ethyl methacrylate, 2-ethylhexyl acrylate, ethyl methacrylate copolymer, 2-(dimethylamino)ethyl methacrylate, methyl methacrylate, n-butyl methacrylate copolymer, etc. It will be done.
• the aminoalkyl (meth)acrylate copolymer of the present disclosure is a copolymer polymerized from at least one monomer selected from Group A and Group B below, and has excellent water resistance and dye resistance.
• the proportion of the amine monomer of group B below in the copolymer is preferably 2 to 15%. It is necessary and preferably contained in an amount of 8 to 15%. If the amount of the amine monomer is too large, exceeding 15%, it tends to flow easily with water. On the other hand, if the amine monomer content is less than 2%, it is not preferable because it affects the absorption of the dye into the skin.
• Group A (meth)ethyl acrylate, methyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, (meth)acrylate sec-butyl acid, tert-butyl (meth)acrylate, n-hexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, isooctyl (meth)acrylate, n-decyl (meth)acrylate, (meth)acrylate ) Isododecyl acrylate, lauryl (meth)acrylate, palmityl (meth)acrylate, stearyl (meth)acrylate, behenyl (meth)acrylate, cyclohexyl (meth)acrylate, benzyl (meth)acrylate, (meth) Isoborn
• (meth)acrylic acid represents “acrylic acid and/or methacrylic acid.”
• ethyl (meth)acrylate is used, which further improves the adhesion of drawn lines to the skin.
• 2-(dimethylamino)ethyl methacrylate is particularly preferable to use.
• the aminoalkyl (meth)acrylate copolymer used in the present disclosure can be a commercially available product if it is available, and preferably an aminoalkyl (meth)acrylate copolymer obtained by the following production method.
• the aminoalkyl (meth)acrylate copolymer used in the present disclosure includes a mixed monomer containing at least one monomer selected from the above group A and at least one monomer selected from the above group B, such as n-propanol, etc. By dissolving it in a solvent and carrying out solution polymerization using azobisisobutyronitrile or the like as a polymerization initiator, a reducing agent as a polymerization initiator, and a polymerizable surfactant as necessary. can be manufactured.
• the content of the above-mentioned group B monomers in the aminoalkyl (meth)acrylate copolymer component is such that the above-mentioned preferred content ratio is desirable from the viewpoints of color development, weather resistance, stability, etc.
• the above content (2 to 15%) is set from the viewpoint of absorption of the dye into the skin, etc.
• a mixed monomer containing at least the above group A monomer and the above group B monomer is dissolved in n-propanol or the like and solution polymerized to form a resin solid. 10 to 35% of the aminoalkyl (meth)acrylate copolymer used in this disclosure will be obtained.
• the resulting aminoalkyl (meth)acrylate copolymer is useful for its adhesion and water resistance.
• the content of the aminoalkyl (meth)acrylate copolymer used is preferably 10 to 35% as a resin solid content based on the total amount of the skin marker composition, from the viewpoint of achieving both high adhesion and water resistance.
• water-soluble organic solvent used in the present disclosure examples include lower alcohols having 5 or less carbon atoms, and are particularly effective for lowering the solubility of acidic dyes and the resulting aminoalkyl (meth)acrylate copolymers and the viscosity of compositions containing them. It is suitable for spillage when used in an applicator. It is also preferable for the drying properties of the coating film after application. Specifically, methyl alcohol (methanol), ethyl alcohol (ethanol), n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol, isobutyl alcohol, pentyl alcohol, ethylene glycol, propylene.
• At least one type of glycol (each singly or a mixture of two or more types) is mentioned.
• lower alcohols having 3 or less carbon atoms are used, and in particular, ethyl alcohol (ethanol), n-propyl alcohol, and isopropyl alcohol are preferably used from the viewpoint of safety and ease of handling.
• the content of the water-soluble organic solvent used is preferably from 20 to 20, based on the total amount of the skin marker composition, from the viewpoint of the solubility of the obtained aminoalkyl (meth)acrylate copolymer and the solubility of the acidic dye. It is desirable to set it to 80%, more preferably 20 to 70%. By setting the content of this water-soluble organic solvent to 20% or more, the solubility of the obtained aminoalkyl (meth)acrylate copolymer can be improved and a stable solution can be obtained, and the preservative effect, although slight, can be obtained. On the other hand, by setting it to 80% or less, the solubility of the acidic dye becomes even better, and effects can be exhibited in terms of color development and water resistance.
• the tabular pigment used in the present invention can be employed without particular limitation, and includes, for example, mica, mica titanium, carmine-coated mica titanium, chromium oxide-coated mica titanium, iron oxide-coated mica titanium, iron oxide/carmine-coated mica titanium, Iron oxide and dark blue coated mica titanium, blue coated mica titanium, dark blue coated mica titanium, red iron oxide coated mica, red iron oxide coated mica titanium, red iron oxide and carmine coated mica titanium, red iron oxide and iron oxide coated mica titanium, red iron oxide and dark blue coated mica titanium, red iron oxide ⁇ Iron oxide, dark blue coated mica titanium, etc.
• bright pigments made of glass flakes or lumpy flakes coated with metals or metal oxides such as commercially available aluminum flake pigments and silica coats.
• Examples include at least one type of plate-like (scale-like) pigment such as a coated silica-coated aluminum pigment and a metal-deposited resin pigment (each singly or a mixture of two or more types, the same applies hereinafter).
• plate-like (scale-like) pigment such as a coated silica-coated aluminum pigment and a metal-deposited resin pigment (each singly or a mixture of two or more types, the same applies hereinafter).
• examples include commercially available aluminum flake pigments, metal oxide-coated glass flakes (product name "Metashine”; manufactured by Nippon Sheet Glass Co., Ltd., etc.), metal oxide-coated mica (product name: Nippon Sheet Glass Co., Ltd.), etc.
• Lumina manufactured by Nagase Sangyo Co., Ltd.
• silica-coated aluminum pigments examples include the "Metallics” series (manufactured by Toyo Aluminum Co., Ltd.) under the trade name and the "Visionaire” series (manufactured by ECKART) under the trade name. Silica-coated aluminum pigments are particularly preferred as the tabular pigments used in the present disclosure.
• Distilled water, ion-exchanged water, purified water, pure water, ultrapure water, etc. can be used as the water used as a solvent in the present disclosure.
• the amount is preferably 10 to 35%, more preferably 15 to 30%, based on the total amount of the skin marker composition.
• the skin marker composition of the present disclosure contains at least an acid dye, an aminoalkyl (meth)acrylate copolymer, a water-soluble organic solvent, a tabular pigment, and water. From the viewpoint of improving the dissolution stability of each component, a pH adjuster, a surfactant, a viscosity adjuster, etc. may be used as necessary.
• the skin marker composition of the present disclosure uses a cone-plate viscometer standard cone rotor, cone angle 1° 34', cone radius 24mm, shear rate 76.6s -1 TVE manufactured by Toki Sangyo Co., Ltd. It is preferable that the viscosity at a temperature of -25L at 25°C is 10 to 50 mPa ⁇ s. A more preferable range in the above viscosity range varies depending on the types of components of the skin marker composition, but it is more preferably 10 to 45 mPa ⁇ s.
• this viscosity value By setting this viscosity value to 10 mPa ⁇ s or more, it is possible to apply the liquid to the skin without causing dripping, while by setting it to 45 mPa ⁇ s or less, it can be applied to the skin smoothly.
• the viscosity within the above range can be achieved by suitably combining the amounts of each component such as an acidic dye, an aminoalkyl (meth)acrylate copolymer, water, and if necessary a viscosity modifier.
• the skin marker composition of the present disclosure has a pH adjusted to less than 7.0 in order to improve coloring properties, prevent skin irritation, and stabilize dissolution, and preferably has a pH of 4 or more and less than 7. is desirable. If the pH of this skin marker composition is 7 or more, the stainability to the skin will be reduced, and if the pH is less than 4, skin irritation may occur.
• pH adjustment can be performed using an organic acid such as malic acid, citric acid, or glycolic acid, an inorganic acid such as 5M hydrochloric acid, or a salt thereof, or a pH adjuster such as aminomethylpropanol.
• the blending ratio of the aminoalkyl (meth)acrylate copolymer and the pH adjuster is 15:5 to 15:1 in terms of mass ratio, Particularly preferably, the ratio is 15:3 to 15:1.
• a skin marker composition with a pH of less than 7.0, which is less irritating to the skin in a weakly acidic range can be obtained.
• the skin marker composition of the present disclosure can be prepared by a conventional method, and contains each component such as at least one of the above acidic dyes, an aminoalkyl (meth)acrylate copolymer, water, and a water-soluble organic solvent in the above-mentioned amounts. It can be manufactured by blending within the range of and stirring and mixing uniformly. For example, after stirring an acidic dye and a solvent such as water using a general-purpose disper until the mixture becomes uniform, and then mixing the aminoalkyl (meth)acrylate copolymer, if necessary, add a pH adjuster, a viscosity adjuster, etc. In addition, a plate-like pigment-free skin marker composition can be prepared by stirring with a homomixer or the like until the mixture becomes uniform with a disper or the like.
• the plate-shaped pigment can be added last and adjusted by stirring with a general-purpose disper until it looks uniform.
• the composition excluding the tabular pigment is adjusted to 92.5 to 98.0 parts by weight, and the tabular pigment is adjusted to 2.0 to 7.5 parts by weight, so that the total amount is 100 parts by weight.
• the tabular pigment preferably has an average particle diameter of 1 to 50 ⁇ m; if it is less than 1 ⁇ m, it becomes difficult to obtain sufficient glitter, and if it exceeds 50 ⁇ m, the amount of liquid flowing out decreases.
• the skin marker composition of the present invention When using the skin marker composition of the present invention constructed as described above, it is necessary to dye the skin by applying an acid dye to the skin parts (skin) such as the face surface and the body surface.
• skin applicators such as a container type with a brush, a container type with a spatula, a bottle type, a tube type, and a cotton type applicator can be used.
• the shape and structure of the skin applicator to be used are not particularly limited, the composition of the present invention is characterized by containing a tabular pigment with a large average particle size of 1 to 50 ⁇ m. A batting type applicator can be used.
• the skin marker composition of the present invention is polymerized from a combination of at least 0.95 to 4.75% by mass of an acid dye and a specific monomer, and the aminoalkyl
• the skin marker composition which contains a meth)acrylate copolymer, a water-soluble organic solvent, a tabular pigment, and water, and has a pH of less than 7.0, is applied by shaking or the like using a cotton-type applicator. If applied to the desired skin area without any work, the color development is good without color separation, the plate-like pigment does not come off unintentionally from the skin, and absorption of the dye into the skin can be prevented. , it is possible to give a beautiful finish.
• the applicator containing the skin marker composition of the present invention is preferably impregnated with a filling-type container having a porosity of 88 to 96%.
• a filling-type container having a porosity of 88 to 96%.
• the porosity refers to a value excluding the proportion of fibers in the volume of the filling.
• the application part preferably has a fiber bundle core composed of fibers of 2 to 5 deniers, and it is further desirable that the fiber bundle core has a porosity of 70 to 80%.
• this fiber bundle core has a denier of 2 denier or more and a porosity of 70% or more, the plate-shaped pigment can be discharged even better.
• a denier of 5 denier or less and a porosity of 80% or less liquid dripping can be prevented. This enables stable discharge.
• Aminoalkyl (meth)acrylate copolymers used in Examples 1 to 3, Comparative Examples 1 to 7, and Reference Examples 1 and 2 were obtained according to Production Examples 1 to 7 below.
• parts indicate parts by mass.
• the polymerization was completed after aging for 6 hours, and an aminoalkyl (meth)acrylate copolymer [2-(dimethylamino)ethyl methacrylate/2-ethylhexyl acrylate/ethyl methacrylate copolymer] was obtained.
• ⁇ The coating liquid could be discharged, but the brightness was inferior to that of the contained composition.
• ⁇ The coating liquid cannot be discharged, and even if it can be discharged, no glitter is observed.
• Color development evaluation criteria ⁇ : Vivid color development and glittering properties are observed.
• ⁇ ' Slightly thin coloring is observed, or the brightness is slightly inferior.
• ⁇ Thinness is observed in color development, or shine is poor.
• ⁇ Significant thinness of color development is observed, or no glitter is observed.
• Examples 1 to 3 which are within the scope of the present invention, are superior to Comparative Examples 1 to 7, which are outside the scope of the present invention, in terms of discharge performance, color development, water resistance, and water-resistant fixation. It turned out that In addition, when we observed the nylon pen core after using it, we found that there was no dyeing on the nylon pen core, no agglomeration of the plate-shaped pigment within the filling, and no ejection failure, and the line density and color tone were stable. It turned out that Furthermore, since Reference Examples 1 and 2 are equipped with the skin marker composition of Example 1, the color development, water resistance, and water-resistant fixation are good, but the porosity of the filling of the applicator and the fiber bundles are good. When the denier number of the core was outside the preferred range, the discharge performance was slightly inferior.
• the glitter coating liquid can be easily applied to the desired skin area, such as the face and body, without any preparatory steps, and the color development is good without color separation, and it can also prevent the dye from being absorbed into the skin.
• a glittering skin marker composition that can give a beautiful finish is obtained. It can also be used as an eyebrow cosmetic or a temporary hair dye.

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• 2023
  • 2023-07-13 WO PCT/JP2023/025881 patent/WO2024014508A1/ja not_active Ceased
  • 2023-07-13 EP EP23839680.8A patent/EP4556075A1/en active Pending
  • 2023-07-13 JP JP2024533752A patent/JPWO2024014508A1/ja active Pending

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