Photocurable resin composition for nail or artificial nail

• US 11,406,585 B2
• Filed: 12/04/2017
• Issued: 08/09/2022
• Est. Priority Date: 12/19/2016
• Status: Active Grant

• Current Assignee: ThreeBond Co., Ltd.
• Original Assignee: ThreeBond Co., Ltd.
• Inventors: Saito, Erika, Shirakawa, Yugo
• Primary Examiner(s): Babson, Nicole P
• Application Number:
  US16/467,155
• Publication Number:
  US 20190314264A1
• Time in Patent Office: 1,709 Days
• Field of Search: None
• CPC Class Codes: A45D 29/00 Manicuring or pedicuring implements
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 2800/81 Preparation or application process involves irradiation
• CPC Class Codes: A61K 2800/95 Involves in-situ formation or cross-linking of polymers
• CPC Class Codes: 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
• CPC Class Codes: A61K 8/8152 Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
• CPC Class Codes: A61K 8/87 Polyurethanes
• CPC Class Codes: A61Q 3/02 Nail coatings
• CPC Class Codes: C08F 2/48 by ultraviolet or visible light
• CPC Class Codes: C08F 265/06 Polymerisation of acrylate or methacrylate esters on to polymers thereof
• CPC Class Codes: C09D 4/06 Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00

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

1. 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 μ

m, and

wherein the component (B) is contained in an amount of 8 to 25 parts by mass with respect to 100 parts by mass of the component (A), and

the 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), and

wherein the component (B) comprises a visible light type photoinitiator and a non-visible light type photoinitiator, and

the visible light type photoinitiator is contained in an amount of 70% by mass or less with respect to the total amount of the component (B).

2. The photocurable resin composition for a nail or an artificial nail according to claim 1, wherein the average particle size of the (meth)acrylic polymer particles of the component (C) is 5 to 14 μ

m.

3. The photocurable resin composition for a nail or an artificial nail according to claim 1, wherein component (A) comprises a (meth)acrylate oligomer and/or a (meth)acrylate monomer.

4. The photocurable resin composition for a nail or an artificial nail according to claim 1, wherein component (A) comprises a urethane (meth)acrylate oligomer.

5. The photocurable resin composition for a nail or an artificial nail according to claim 1, wherein component (C) is polymethylmethacrylate particles.

6. A cured product of the photocurable resin composition for a nail or an artificial nail set forth in claim 1.

7. The photocurable resin composition for a nail or an artificial nail according to claim 1, wherein the component (A) has a viscosity at 25°

C. measured using an EHD type rotary viscometer of 1 mPa·

s or more and 50 Pa·

s or less.

8. The photocurable resin composition for a nail or an artificial nail according to claim 1, wherein the component (A) comprises a (meth)acrylate oligomer having a weight average molecular weight of 1,000 to 100,000.

9. The photocurable resin composition for a nail or an artificial nail according to claim 1, wherein a weight average molecular weight of the (meth)acrylic polymer of the component (C) is more than 100,000 and less than or equal to 11,000,000.

10. The photocurable resin composition for a nail or an artificial nail according to claim 1, wherein the photocurable resin composition has a viscosity at 25°

C. measured using an EHD type rotary viscometer of 3 Pa·

s or more and 50 Pa·

s or less.

11. 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 1 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.