CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims the benefit of priority of Korean Patent Application No. PCT/KR2018/004530 filed on Apr. 19, 2018, and claims priority to and the benefits of Korean Patent Application No. 10-2017-0051609, filed Apr. 21, 2017, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to an ultraviolet light (UV) coating composition, and more particularly, to an environmentally friendly biomaterial-based UV coating composition having physical properties equal or superior to those of conventional petrochemical-based UV coating compositions.

BACKGROUND ART

With recent technological development, to meet increased aesthetic demands of consumers, methods of forming a coating film on the surface of a product are widely used.

In general, coating refers to application of other materials to the surface of an object. Coating serves to protect objects from external stimuli (e.g., scratches), discoloration, and oxidation. In addition, the appearance of an object on which a coating film is formed can be maintained for a long time.

According to a general procedure, after a coating solution is applied to the surface of an object, a curing process is performed. In this case, heat curing methods, light curing methods, or evaporation drying methods may be used. Thereamong, the light curing methods, in particular ultraviolet light (UV) curing methods, are widely used because the light curing methods can reduce environmental pollution by minimizing use of solvents and have high efficiency due to short curing time.

In Korean Patent Application Publication No. 10-1993-0013028, a UV-curable coating composition is disclosed. The UV-curable coating composition is prepared using petrochemicals and contains no biomaterial. Accordingly, use of the composition may cause environmental problems such as depletion of hydrocarbon resources and generation of carbon dioxide and environmental hormones. Therefore, a novel composition that can replace the conventional composition needs to be developed.

RELATED ART DOCUMENTS

[Patent Documents] (Patent Document 1) KR 10-1993-0013028 A (Publication date: Jul. 21, 1993)

DISCLOSURE

Technical Problem

Therefore, the present invention has been made in view of the above problems, and it is one object of the present invention to provide an environmentally friendly UV coating composition having physical properties equal or superior to those of conventional petrochemical-based UV coating compositions.

Technical Solution

In accordance with one aspect of the present invention, provided is a UV coating composition including:

a bio-urethane acrylate oligomer;

a bio-monomer;

a bio-wax; and

a bio-bead.

Advantageous Effects

As apparent from the foregoing, the present invention advantageously provides a biomaterial-based UV coating composition having physical properties equal or superior to those of conventional petrochemical-based UV coating compositions.

According to the present invention, since the UV coating composition of the present invention is prepared based on a biomaterial, the UV coating composition of the present invention is more environmentally friendly than conventional petrochemical-based UV coating compositions.

