	US 11,718,722 B2
	Hard coating film and image display device having the same
Min Kyung Kang, Hwaseong-si (KR); Seunghee Kim, Yongin-si (KR); Geo San Lim, Seoul (KR); and Jonghan Choi, Hanam-si (KR)
Assigned to DONGWOO FINE-CHEM CO., LTD., Iksan-si (KR)
Filed by DONGWOO FINE-CHEM CO., LTD., Iksan-si (KR)
Filed on Sep. 13, 2021, as Appl. No. 17/472,939.
Claims priority of application No. 10-2020-0117738 (KR), filed on Sep. 14, 2020.
Prior Publication US 2022/0081524 A1, Mar. 17, 2022
Int. Cl. C08F 2/46 (2006.01); C08F 2/50 (2006.01); C08G 61/04 (2006.01); C08J 7/046 (2020.01); G02F 1/1333 (2006.01); C08J 7/04 (2020.01); C08F 220/20 (2006.01); C08F 220/22 (2006.01); C08K 5/07 (2006.01)

CPC C08J 7/046 (2020.01) [C08F 2/50 (2013.01); C08F 220/20 (2013.01); C08F 220/22 (2013.01); C08J 7/0427 (2020.01); C08K 5/07 (2013.01); G02F 1/133311 (2021.01); C08J 2367/02 (2013.01)]

11 Claims

1. A hard coating film comprising:

a substrate; and

a hard coating layer formed on at least one surface of the substrate,

wherein the hard coating layer is formed from a hard coating composition comprising a hydroxyl group-containing light-transmitting resin, a fluorine-based UV-curable functional group-containing compound, a photoinitiator, and a solvent, and

when measured by X-ray photoelectron spectroscopy (XPS) on a surface of the hard coating layer, atomic percent of elemental fluorine (F) on the surface of the hard coating layer is 10 to 55 at %,

wherein the hydroxyl group-containing light-transmitting resin is contained in an amount of 1 to 50 wt % based on a total weight of the hard coating composition,

wherein the fluorine-based UV-curable functional group-containing compound is contained in an amount of 10 to 40 wt % based on the total weight of the hard coating composition, and

wherein the hard coating layer has a water contact angle of 100° or more after rubbing 3,000 times using an eraser under a load of 1 kg.