Coating agent, coating film, laminate and surface-protected article

Patent metadata

Field	Value
Publication number	US-10513586-B2
Application number	US-201615563561-A
Country	US
Kind code	B2
Filing date	Mar 29, 2016
Priority date	Mar 31, 2015
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

Provided is a coating agent that can be formed into a surface layer having excellent self-restoring properties and stain-proof properties by applying the coating agent onto a surface of a base material (for example, thermoplastic polyurethane) and curing the resulting material. The coating agent according to the present application contains urethane (meth)acrylate-based resin (a), fluorine-based compound (b) and photopolymerization initiator (d). Urethane (meth)acrylate-based resin (a) has weight average molecular weight (Mw) of 10,000 to 800,000. Fluorine-based compound (b) has at least two polymerizable functional groups. The surface layer formed of the coating agent has excellent self-restoring properties of a scratch, stain-proof properties and stretchability.

First claim

What is claimed is:

1. A laminate, comprising:
a base material film formed of a thermoplastic polyurethane; and
a surface layer formed by curing a coating agent on a first surface side of the base material film, wherein the coating agent comprises a urethane (meth)acrylate-based resin (a), a fluorine-based compound (b), a fluorosilsesquioxane derivative (c) and a photopolymerization initiator (d),
the urethane (meth)acrylate-based resin (a) has weight average molecular weight of 10,000 to 800,000, and
the fluorine-based compound (b) has at least two polymerizable functional groups;
the fluorosilsesquioxane derivative (c) has at least one polymerizable functional group; and
the coating agent contains 1 to 9% by weight of the fluorine-based compound (b) based on a total amount of the urethane (meth)acrylate-based resin (a) and the fluorine-based compound (b).

2. The laminate according to claim 1 , wherein the fluorine-based compound (b) is perfluoropolyether having a (meth)acryloyl group.

3. The laminate according to claim 1 , wherein the fluorosilsesquioxane derivative (c) is cage structure fluorosilsesquioxane.

4. The laminate according to claim 1 , wherein the coating agent contains 0.1 to 10% by weight of the fluorosilsesquioxane derivative (c) based on a total amount of the urethane (meth)acrylate-based resin (a), the fluorine-based compound (b) and the fluorosilsesquioxane derivative (c).

5. The laminate according to claim 1 , comprising:
an adhesive layer on a side opposite to the first surface side of the base material film; and
a release film on a surface opposite to the base material film of the adhesive layer,
wherein the adhesive layer is composed of at least one resin selected from an acrylic resin, a urethane-based resin, a rubber-based resin and a silicone-based resin, and at least one release agent selected from a fluorine-based resin, a silicone resin and long-chain-containing carbamate is applied onto a surface of the release film relative to the adhesive layer.

6. A surface-protected article, comprising:
the laminate according to claim 5 , from which the release film is peeled off; and
an article prepared by attaching, on a surface of the article, the laminate from which the release film is peeled off, by the adhesive layer.

Assignees

• Jnc Corp

Inventors

• Kondo Kyoko
• Ito Kenya
• Iizuka Hiroyuki
• Kuromatsu Aki

Classifications

• C09D175/16 Primary

  having terminal carbon-to-carbon unsaturated bonds · CPC title

• C09D4/00

  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} · CPC title

• C08G18/44 Primary

  Polycarbonates · CPC title

• B32B27/40

  comprising polyurethanes · CPC title

• B32B27/30

  comprising vinyl {(co)polymers; comprising acrylic (co)polymers} · CPC title