Method of producing optical film and coating liquid for production of optical film

摘要

Provided is a method of producing an optical film which has an excellent strength and a low refractive index, and can be used for an optical antireflective film. The production method includes preparing a coating liquid including a capsule having a shell of a halogenated compound of an element of Group 2 by forming an emulsion of one of an aqueous solution including a compound containing an element of Group 2 and an aqueous solution including a compound containing a halogen, and an organic solvent, applying the coating liquid on a substrate, and heating the coating liquid, thereby forming an optical film containing a hollow particle having the shell of a halogenated compound of an element of Group 2.

主权项

1. A method of producing an optical film containing hollow particles, comprising:
applying a coating liquid on a substrate, the coating liquid comprising capsules each having a shell of a halogenated compound of an element of Group 2 and a core of an oily organic solvent, the capsules being dispersed in a solvent in which at least a component serving as a binder is dissolved, the core comprising a catalyst causing the component serving as a binder to cure; and heating the capsules and the component serving as a binder on the substrate to bring the catalyst into contact with the component serving as a binder, whereby an optical film containing hollow particles having the shell of a halogenated compound of an element of Group 2 is formed, and the hollow particles are bound to each other by the cured binder.