CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a national stage entry under 35 U.S.C. § 371 of International Application No. PCT/KR2018/013354 filed on Nov. 6, 2018, which claims priority to Korean Patent Application No. 10-2017-0149538 filed in the Korean Intellectual Property Office on Nov. 10, 2017, the entire contents of which are incorporated herein by reference in their entirety.

TECHNICAL FIELD

The present invention relates to a photocurable composition and a coating layer including a cured product thereof.

BACKGROUND ART

A deco film as an interior finishing material is attached to a target product, and thus is used to make the quality of the product high quality, protect the product, or make the product an eco-friendly product. Such a deco film is used in various fields such as various furniture such as a chest of drawers, a sink or table, and electronic products such as a washing machine, a refrigerator, an audio system or a television set. Also, in terms of an aesthetic sense of the product, various patterns such as a tree pattern, a hair line pattern, and an SUS pattern can be formed on the deco film.

Recently, various furniture and electronic products having curved shapes have appeared, and the demand for a deco film attached to bent products tends to increase. Glass with transparency is usually used as a substrate of a deco film in the related art, but when a decoration pattern is printed directly on a curved surface of glass, the defective rate is high, so that recently, deco films which create metal sensitivity and various patterns with transparent films on a plastic substrate such as polyethylene terephthalate (PET) have been on the market.

However, there occurs a problem in that a transparent film is peeled off from a plastic substrate in a short period of time after a deco film is attached to a bent product. Further, when a product to which a deco film is attached is used under high temperature or high humidity conditions, there is a problem in that a transparent film falls off from a plastic substrate.

Thus, there is a need for a technology capable of producing a deco film in which adhesion to a bent product is excellent, a transparent film of the deco film is not peeled off from a substrate even after the deco film is attached to the bent product, and deformation does not occur under severe conditions such as high temperature and high humidity.

DETAILED DESCRIPTION OF THE INVENTION

Technical Problem

The present specification has been made in an effort to provide a photocurable composition and a coating layer including a cured product thereof.

However, a problem to be solved by the present invention is not limited to the aforementioned problem, and the other problems that are not mentioned may be clearly understood by a person skilled in the art from the following description.

Technical Solution

An exemplary embodiment of the present invention provides a photocurable composition including: a urethane acrylamide oligomer derived from a first urethane prepolymer having an isocyanate end group and a polar group-containing acrylamide; a urethane acrylate oligomer derived from a second urethane prepolymer having an isocyanate end group and a polar group-containing (meth)acrylate; and an amide group-containing acrylic polymer derived from acrylamide and a polar group-containing (meth)acrylate.

Another exemplary embodiment of the present invention provides a coating layer including a cured product of the photocurable composition.

Advantageous Effects

According to an exemplary embodiment of the present invention, it is possible to provide a deco film in which a coating layer including a cured product of a photocurable composition is easily attached to an article having curved shapes and the form of the deco film may be maintained for a long period of time even after the deco film is attached to a bent article.

According to an exemplary embodiment of the present invention, the photocurable composition can provide a coating layer which is suppressed from being deformed in a high temperature environment.

According to an exemplary embodiment of the present invention, a deco film including a coating layer is excellent in adhesion to a bent article, and can maintain the form thereof for a long period of time even after being attached to the bent article.

According to an exemplary embodiment of the present invention, a deco film including a coating layer can maintain the form thereof even under high temperature and high humidity conditions.

