| 摘要 |
PURPOSE: To provide a low refractive index-antireflection film for reducing the reflection on the surface of plastic or glass and a transparent substrate having this film. CONSTITUTION: A coating liquid consisting of (a) silica sol having 5-30nm particle size and (b) at least one component selected from the group consisting of hydrolyzate of alkoxysilane, hydrolyzate of metal alkoxide and metal salt, and contained in an organic solvent at the ratios of 10-50 pts.wt. (b) expressed in terms of metal oxide to 10-100 pts.wt. SiO2 of (a) is applied to a substrate. Then, it is cured to obtain the film. |
