# US 10,500,144 B2 · Photocurable composition to be used on fingernails or artificial nails, and method for coating by using same

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- Number: US 10,500,144 B2
- Document ID: US10500144B2
- Status: Granted
- Kind: B2
- Application number: 15/774,415
- Filed: 2016-10-26
- Published: 2018-11-15
- Granted: 2019-12-10
- Earliest claimed: 2015-11-09
- Assignees: Three Bond Co., Ltd.
- Applicants: Three Bond Co., Ltd.
- Inventors: Koichi Takemoto
- Web page: https://patentgrep.com/patent/US10500144B2

## CPC

- A61K 8/42: Amides
- A45D 31/00: Artificial nails
- A61K 8/35: Ketones, e.g. benzophenone
- A61K 8/36: Carboxylic acids; Salts or anhydrides thereof
- A61K 8/49: containing heterocyclic compounds
- A61K 8/55: Phosphorus compounds
- A61K 8/87: Polyurethanes
- A61Q 3/02: Nail coatings
- B05D 3/10: by other chemical means
- B05D 7/24: for applying particular liquids or other fluent materials
- C08F 2/50: with sensitising agents
- C08F 220/06: Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
- C08F 220/56: Acrylamide; Methacrylamide
- C08F 222/1065: {of alcohol terminated (poly)urethanes, e.g. urethane(meth)acrylates}
- C08F 242/00: Copolymers of drying oils with other monomers
- C08F 290/067: {Polyurethanes; Polyureas}
- C08G 18/72: Polyisocyanates or polyisothiocyanates
- C09D 4/00: Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16}
- C09D 5/00: Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes
- C09D 133/14: of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
- C09D 175/16: having terminal carbon-to-carbon unsaturated bonds
- C09D 193/04: Rosin
- A61K 2800/81: Preparation or application process involves irradiation
- A61K 2800/95: Involves in-situ formation or cross-linking of polymers
- B05D 1/26: performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
- B05D 3/067: {Curing or cross-linking the coating}
- B05D 2502/00: Acrylic polymers
- B05D 2503/00: Polyurethanes
- B05D 2505/00: Polyamides
- C09D 7/40: Additives
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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 (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

A photocurable composition for a nail or artificial nail which can form a cured product exhibiting excellent durability (adhesion maintainability to nails). In addition, the present invention provides a photocurable composition for a nail or artificial nail which emits a weaker odor, generates less heat at the time of curing, and can form a cured product exhibiting excellent surface curability. In addition, the present invention provides a photocurable composition for nail or artificial nail which can form a cured product having an excellent shear adhesive force. The photocurable composition for nail or artificial nail according to the present invention contains the following components (A) to (D): component (A): a urethane-modified (meth)acrylic oligomer; component (B): a (meth)acrylamide monomer; component (C): a (meth)acrylic monomer having an acidic group; and component (D): a photoinitiator.

## Claims

### Claim 1

A photocurable composition for a nail or artificial nail comprising:
component (A): a urethane-modified (meth)acrylic oligomer;
component (B): at least one of 4-acryloylmorpholine or dialkylacrylamide;
component (C): a (meth)acrylic monomer having an acidic group; and
component (D): a photoinitiator.

### Claim 2 (depends on 1)

The photocurable composition for a nail or artificial nail according to claim 1, wherein the component (A) is a urethane-modified (meth)acrylic oligomer having two (meth)acryl groups in one molecule.

### Claim 3 (depends on 1)

The photocurable composition for a nail or artificial nail according to claim 1, wherein the component (B) is contained at from 15 to 50 parts by mass with respect to 100 parts by mass of the component (A) and the component (C) is contained at from 1 to 10 parts by mass with respect to 100 parts by mass of the component (A).

### Claim 4 (depends on 1)

The photocurable composition for a nail or artificial nail according to claim 1, wherein the component (C) is (meth)acrylic acid.

### Claim 5 (depends on 1)

The photocurable composition for a nail or artificial nail according to claim 1, further comprising a silane-based coupling agent.

### Claim 6 (depends on 1)

A method of covering a human nail or an artificial nail, the method comprising applying the photocurable composition for a nail or artificial nail according to claim 1 on a human nail or an artificial nail to form a layer and then irradiating the layer with an energy ray for curing.

### Claim 7 (depends on 1)

The photocurable composition for a nail or artificial nail according to claim 1, wherein the photocurable composition for a nail or artificial nail is a base coat agent.