Coating film containing an ultraviolet-screening agent and/or an infrared-screening agent and article having a surface coated with said coating film

Abstract

Conventional techniques for forming ultraviolet- or infrared-screening coating films require several recoating steps in order to attain a desired coating weight. Such techniques therefore fail to form high-strength coating films and cause uneven coating, mottling, spotting, blushing, partial breakage, or cracking in some working atmospheres. This application involves applying a coating fluid including at least an ultraviolet-screening agent and/or an infrared-screening agent, a binder and a polyhydric alcohol base solvent and having a polyhydric alcohol content of 50 to 95 wt % to a substrate with a coater whose ejection nozzle has a tip diameter of 0.5 to 3.0 mm and which is equipped with a blower for forming an air curtain at an ejection pressure of the nozzle of 0.01 to 0.098 Mpa. The coating is then dried to form a film containing an ultraviolet-screening agent and/or an infrared-screening agent on the surface of the substrate.

1 . A coating film containing an ultraviolet-screening agent and/or an infrared-screening agent and having a film thickness of 10 nm-10 μm which is formed on the surface of the substrate by a coating process for forming a coating film onto a surface of a glass substrate, comprising
 coating on the glass substrate a coating fluid comprised of at least one of an ultraviolet-screening agent having a particle diameter of 1-100 nm and an infrared-screening agent, a binder component and 50-95% by weight of a polyhydric alcohol solvent selected from the group consisting of ethylene glycol, propylene glycol, trimethylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, and 1,7-heptanediol with a coater having a fluid ejection nozzle with a tip bore diameter of 1.0-2.0 mm at an ejection pressure of 0.01-0.05 MPa; and 
 drying the coated glass substrate by air to form a coating film having a visible light transmittance of 85% or more. 
 
     
     
         2 . An article which has on the surface the coating film containing an ultraviolet-screening agent and/or an infrared-screening agent according to  claim 1 . 
     
     
         3 . A glass article which has on the surface the coating film containing an ultraviolet-screening agent and/or an infrared-screening agent according to  claim 1 . 
     
     
         4 . An automobile which has the coating film containing an ultraviolet-screening agent and/or an infrared-screening agent according to  claim 1  on at least a part of front glass, rear glass or side glass.