Coating composition and coating film having enhanced abrasion resistance and fingerprint traces removability
The present invention provides a coating composition and a coating film that comprises a binder containing a UV-curable functional group, a compound containing a fluorine UV-curable functional group, a photoinitiator; and nano-sized particles. The coating film according to the present invention has excellent abrasion resistance and contamination resistance such as fingerprint trace removability and scribbling resistance.
1. A coating composition comprising:
a binder containing a UV-curable functional group;
a compound containing a fluorine UV-curable functional group;
a photoinitiator; and
nano-sized particles,
wherein the compound containing the fluorine UV-curable functional group comprises a compound that is Formula 2:
wherein X is F or CF 3 , Z is H or CH 3 , j and m are each an integer in the range of 1 to 16, k and n are each an integer in the range of 0 to 5.
2. The coating composition as set forth in claim 1 , wherein on the basis of 100 parts by weight of the binder containing the UV-curable functional group, the content of the compound containing the fluorine UV-curable functional group is in the range of 0.5˜20 parts by weight, the content of the nano-sized particles is in the range of 0.5˜50 parts by weight, and the content of the photoinitiator is in the range of 1˜20 parts by weight.
3. The coating composition as set forth in claim 1 , wherein the binder containing the UV-curable functional group comprises multi-functional or mono-functional monomers or oligomers of acrylates, methacrylates, or vinyls.
4. The coating composition as set forth in claim 1 , wherein the average particle diameter of the nano-sized particles is in the range of 0.5˜50 nm.
5. The coating composition as set forth in claim 1 , wherein the nano-sized particles are selected from the group consisting of silica, alumina, titania, zirconia and magnesium fluoride.
6. The coating composition as set forth in claim 1 , wherein the nano-sized particles are subjected to surface treatment by using a material that is selected from the group consisting of a silane coupling agent, an epoxy compound, a hydroxyl group-containing compound and an isocyanate compound.
7. The coating composition as set forth in claim 1 , further comprising:
a solvent.
8. A coating film that is formed by using the coating composition according to claim 1 , comprising:
a binder containing a UV-curable functional group;
a compound containing a fluorine UV-curable functional group;
a photoinitiator; and
nano-sized particles.
9. The coating film as set forth in claim 8 , wherein the thickness of the film is in the range of 0.5˜300 μm.
10. The coating film as set forth in claim 8 , wherein a substrate is provided on a side of the coating film.
11. A method for producing a coating film, wherein the method comprises the steps of:
coating the coating composition according to claim 1 on a substrate;
drying the coated coating composition; and
photocuring the coated coating composition.
12. The method for producing a coating film as set forth in claim 11 , wherein the substrate is made of a material that is selected from the group consisting of polyester, triacetyl cellulose, an olefin copolymer and polymethyl methacrylate.
13. The method for producing a coating film as set forth in claim 11 , wherein the thickness is in the range of 0.5˜300 μm while the coating is performed.
14. The method for producing a coating film as set forth in claim 11 , wherein the photocuring is performed by using irradiation of ultraviolet rays in an amount in the range of 0.05˜2 J/cm 2 .
15. A display device comprising:
the coating film according to claim 8 .
16. The display device as set forth in claim 15 , wherein the display device is selected from the group consisting of a liquid crystal display, an organic light emitting display (OLED), a plasma display and a mobile phone window.