Patent ID: 6528156
Filing Date: 2003-03-04
Classification: C09D,Y10T

Abstract:
An infrared cut-off film having an infrared cut-off layer which is formed on a film by using a coating composition obtained by mixing and dispersing a powder of indium tin oxide in a resin having transparency,wherein the powder of indium tin oxide has a minimum value of a diffused-reflection-functional logarithm, logf(Rd)), at a light wavelength of 470 nm or lower, which logarithm is measured on the basis of the following equation formulated for a diffused reflection light, f(Rd)=(1Rd)2/2Rd=&agr;/S â€ƒin which Rd is a relative reflectance to a standard sample, &agr; is a an absorption coefficient and S is a scattering coefficient, and the above minimum value is âˆ’0.1 or less, and the resin having transparency is an ultraviolet curable resin obtained by incorporating a photo-cation polymerization initiator into a monomer containing at least one acrylic compound or epoxy compound.