Patent ID: 7927696
Filing Date: 2011-04-19
Classification: C09D,G02B,Y10T

Abstract:
1. A laminate consisting of a heat ray reflection substrate having solar radiation reflectance of 55.3% or less and visible light reflectance of 10% or more to 53.4% or less, and a visible light absorbing film formed by a visible light absorbing ink having been coated on one side or both sides of said substrate, said ink containing fine particles which absorb visible-region light and transmit near-infrared-region light and infrared-region light, the laminate characterized in that: the degree of reduction of visible light reflectance is 0.9 or less as defined by degree of reduction of visible light reflectance=[visible light reflectance (%) of the laminate after coating of the ink]/[visible light reflectance (%) of the substrate before coating of the ink]; and the degree of reduction of solar radiation reflectance is 0.25 or more as defined by degree of reduction of solar radiation reflectance=[solar radiation reflectance (%) of the laminate after coating of the ink]/[solar radiation reflectance (%) of the substrate before coating of the ink]; said visible light absorbing ink contains at least one fine particles of a compound oxide selected from the group consisting of Cu—Fe—Mn, Cu—Cr, Cu—Cr—Mn, Cu—Cr—Mn—Ni, Cu—Cr—Fe and Co—Cr—Fe, titanium nitride, and titanium oxynitride, said fine particles having an average dispersed-particle diameter of 300 nm or less in the ink; and the heat ray reflection substrate comprises: a semitransparent polyethylene terephthalate film having a surface which is uniformly vacuum-deposited with an aluminum thin film; or a composite comprising the semitransparent polyethylene terephthalate film having a surface which is uniformly vacuum-deposited with an aluminum thin film, and a glass plate.