Photocurable composition to be used on fingernails or artificial nails, base coat agent containing same, cured article thereof, method for producing cured article thereof, method for detaching cured article thereof, method for coating by using same, and method for using same

Patent metadata

Field	Value
Publication number	US-2020214956-A1
Application number	US-202016823670-A
Country	US
Kind code	A1
Filing date	Mar 19, 2020
Priority date	Nov 9, 2015
Publication date	Jul 9, 2020
Grant date	—

Abstract

A photocurable composition for a nail or artificial nail which exhibits surface curability corresponding to a UV irradiator and LED irradiation and of which the cured product can exhibit both durability to maintain stable adhesive property in everyday life and soak off property, is colorless and transparent, and is not turbid, or a base coat agent containing the same. The photocurable composition for nail or artificial nail can contain a compound having a (meth)acryloyl group, rosin or a rosin derivative, and a photoinitiator.

First claim

1 . A peeling method, comprising:
soaking off a cured product of a photocurable composition for a nail which is disposed directly on a human nail from the human nail using warm water or a solvent,
wherein, the cured product is a base coat, and
the photocurable composition consists of
component (A): a compound having a (meth)acryloyl group;
component (B): rosin or a rosin derivative;
component (C): a photoinitiator; and
at least one component selected from the group consisting of a coupling agent, a filler, a coloring agent, an antioxidant, a polymerization inhibitor, a defoaming agent, a leveling agent, and a rheology control agent; and
a softening point of the component (B) is from 90° C. to 170° C.

2 . The method according to claim 1 , wherein the component (A) comprises a (meth)acrylate oligomer and a (meth)acrylate monomer or a (meth)acrylamide monomer.

3 . The method according to claim 2 , wherein the (meth)acrylate monomer comprises a (meth)acrylate monomer having an acidic group.

4 . The method according to claim 1 , wherein the cured product is an energy ray-cured product.

5 . A peeling method comprising
applying a photocurable composition for a nail directly on a human nail to form a coating film to cover the human nail, irradiating the coating film with an energy ray for curing, and soaking off the cured product of the covering layer which is disposed directly on the human nail from the human nail using warm water or a solvent, wherein, the photocurable composition is a base coat agent and the cured product is a base coat, and the photocurable composition consists of component (A): a compound having a (meth)acryloyl group; component (B): rosin or a rosin derivative; component (C): a photoinitiator; and at least one component selected from the group consisting of a coupling agent, a filler, a coloring agent, an antioxidant, a polymerization inhibitor, a defoaming agent, a leveling agent, and a rheology control agent; and a softening point of the component (B) is from 90° C. to 170° C.

6 . The method according to claim 2 , wherein component (A) comprises an urethane-modified acrylate oligomer and at least one compound selected from the group consisting of N,N-dimethylacrylamide, acryloylmorpholine, 2-Hydroxyethyl acrylate and Methacrylic acid.

7 . The method according to claim 1 , wherein component (C) comprises at least one compound selected from the group consisting of acetophenones, benzoins, benzophenones, thioxanthones and acylphosphine oxides.

8 . The method according to claim 1 , wherein component (C) comprises at least one compound selected from the group consisting of acetophenones and an acylphosphine oxide-based photopolymerization initiator containing a phosphorus atom.

9 . The method according to claim 1 , wherein component (B) is included in an amount that is 1 part by mass or more and 30 part by mass or less with respect to 100 parts by mass of the component (A).

10 . The method according to claim 1 , wherein the softening point of component (B) is from 95° C. to 130° C.

11 . The method according to claim 2 , wherein component (A) contains a content of (meth)acrylate oligomer and a total content of the (meth)acrylate monomer and the (meth)acrylamide monomer, and a mass ratio of the content of the (meth)acrylate oligomer to the total content of the (meth)acrylate monomer and the (meth)acrylamide monomer is from 75:25 to 95:5.

12 . The method to claim 5 , wherein component (A) comprises a (meth)acrylate oligomer and a (meth)acrylate monomer or a (meth)acrylamide monomer.

13 . The method according to claim 12 , wherein the (meth)acrylate monomer comprises a (meth)acrylate monomer having an acidic group.

14 . The method according to claim 12 , wherein component (A) comprises an urethane-modified acrylate oligomer and at least one compound selected from the group consisting of N,N-dimethylacrylamide, acryloylmorpholine, 2-Hydroxyethyl acrylate and Methacrylic acid.

15 . The method according to claim 5 , wherein component (C) comprises at least one compound selected from the group consisting of acetophenones, benzoins, benzophenones, thioxanthones and acylphosphine oxides.

16 . The method according to claim 5 , wherein component (C) comprises at least one compound selected from the group consisting of acetophenones and an acylphosphine oxide-based photopolymerization initiator containing a phosphorus atom.

17 . The method according to claim 5 , wherein component (B) is included in an amount that is 1 part by mass or more and 30 part by mass or less with respect to 100 parts by mass of the component (A).

18 . The method according to claim 5 , wherein the softening point of component (B) is from 95° C. to 130° C.

19 . The method according to claim 12 , wherein component (A) contains a content of (meth)acrylate oligomer and a total content of the (meth)acrylate monomer and the (meth)acrylamide monomer, and a mass ratio of the content of the (meth)acrylate oligomer to the total content of the (meth)acrylate monomer and the (meth)acrylamide monomer is from 75:25 to 95:5.

Assignees

• Three Bond Co Ltd

Inventors

• Takemoto Koichi

Classifications

• A61K8/368 Primary

  with carboxyl groups directly bound to carbon atoms of aromatic rings · CPC title

• C08F222/1065

  of alcohol terminated (poly)urethanes, e.g. urethane(meth)acrylates · CPC title

• C09D4/00 Primary

  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} · CPC title

• C09D193/04

  Rosin · CPC title

• A61K8/35

  Ketones, e.g. benzophenone · CPC title