| abstract |
An object of the present invention is to provide an anti-fogging coating film excellent in anti-fogging properties, anti-fogging persistence, appearance persistence, and elution resistance. The coating film of the present invention contains the metal oxide (A) and the hydrophilic compound (B), and the height of the eluate based on the coating film surface dissolution test is 1.0 μm or less. The test is carried out as follows: 10 μl of deionized water is placed in On the coating film, place it for 24 hours in an environment of 23°C and 50% RH, and measure the height of the leaching material at 20 randomly selected places within the range of 10cm 2 on the surface of the coating film to determine the maximum height; The water contact angle measured after the property test was less than 40°, and the humidity resistance test was as follows: after exposure for 24 hours in an environment of 85°C 85% RH, let stand for 1 hour in an environment of 23° C. 50% RH. It is preferable that the dissolution amount per unit volume of the coating film based on the total dissolution test of the coating film is 40 mg/cm 3 or less. The weight of the film leachate was determined. |