Patent ID: 10894385

Abstract:
An optical reflective film including refractive index layers containing a water-soluble resin is provided, wherein the film has a small color tone variation and less occurrence of cracks even after a prolonged use. An optical reflective film, including: a substrate; and a dielectric multilayer film formed by alternately laminating a low refractive index layer and a high refractive index layer, disposed on one surface of the substrate, wherein at least one layer of the low refractive index layer and the high refractive index layer is a water-dispersible cationic urethane resin-containing layer, containing: a water-soluble resin; a refractive index adjusting agent; a water-dispersible cationic urethane resin; and a cationic polymer having a tertiary amino group or a cation (salt) thereof or a quaternary ammonium group.