# US 2019/0314264 A1 · Photocurable resin composition for nail or artificial nail

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- Number: US 2019/0314264 A1
- Document ID: US20190314264A1
- Status: Published application
- Kind: A1
- Application number: 16/467,155
- Filed: 2017-12-04
- Published: 2019-10-17
- Earliest claimed: 2016-12-19
- Assignees: Threebond Co., Ltd.
- Applicants: Threebond Co., Ltd.
- Inventors: Erika SAITO; Yugo SHIRAKAWA
- Web page: https://patentgrep.com/patent/US20190314264A1

## CPC

- A61K 8/8152: {Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers}
- A45D 29/00: Manicuring or pedicuring implements
- A61K 8/0241: {Containing particulates characterized by their shape and/or structure (see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes)}
- A61K 8/87: Polyurethanes
- A61Q 3/02: Nail coatings
- C08F 2/48: by ultraviolet or visible light
- A61K 2800/412: Microsized, i.e. having sizes between 0.1 and 100 microns
- A61K 2800/81: Preparation or application process involves irradiation
- A61K 2800/95: Involves in-situ formation or cross-linking of polymers
- 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
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

## Abstract

A photocurable resin composition for a nail or an artificial nail of the present invention includes the following components (A) to (C): component (A): a compound having a (meth)acryloyl group; component (B): a photoinitiator; and component (C): (meth)acrylic polymer particles having an average particle size of 3 to 21 μm. According to the present invention, a photocurable resin composition for a nail or an artificial nail, which has excellent transparency and workability and is capable of forming a matte coat is provided.

## Claims

### Claim at position 1

1-8. (canceled)

### Claim 9

A photocurable resin composition for a nail or an artificial nail, comprising:
component (A): a compound having a (meth)acryloyl group;
component (B): a photoinitiator; and
component (C): (meth)acrylic polymer particles having an average particle size of 3 to 21 μm.

### Claim 10 (depends on 9)

The photocurable resin composition for a nail or an artificial nail according to claim 9, wherein the average particle size of the (meth)acrylic polymer particles of the component (C) is 5 to 14 μm.

### Claim 11 (depends on 9)

The photocurable resin composition for a nail or an artificial nail according to claim 9, wherein component (A) comprises a (meth)acrylate oligomer and/or a (meth)acrylate monomer.

### Claim 12 (depends on 9)

The photocurable resin composition for a nail or an artificial nail according to claim 9, wherein component (A) comprises a urethane (meth)acrylate oligomer.

### Claim 13 (depends on 9)

The photocurable resin composition for a nail or an artificial nail according to claim 9, wherein component (C) is contained in an amount of 45 to 155 parts by mass with respect to 100 parts by mass of the component (A).

### Claim 14 (depends on 9)

The photocurable resin composition for a nail or an artificial nail according to claim 9, wherein component (C) is polymethylmethacrylate particles.

### Claim 15 (depends on 9)

A cured product of the photocurable resin composition for a nail or an artificial nail set forth in claim 9.

### Claim 16 (depends on 9)

A method for coating a nail or an artificial nail, comprising applying the photocurable resin composition for a nail or an artificial nail set forth in claim 9 on a nail or an artificial nail to form a coating film, and then irradiating the coating film with energy rays to cure the coating film.