NEAR-INFRARED RAY ABSORBING LAMINATE

PROBLEM TO BE SOLVED: To provide a coating agent having small color change of a near-infrared ray absorption filter, in the coating agent preferable for forming the near-infrared ray absorption filter that is superior in heat resistance and light resistance. SOLUTION: A near-infrared absorbing layer, formed of the near-infrared absorbing coating agent is a near-infrared absorbing laminate laminated on a base substance, contains a copolymer (A) with a cyclo alkyl group-contained monomer (a1) as essential constituent, and a diimonium compound (B). Change in the transmissivity at 850 and 950 nm of the wavelength, before and after a heat resistant test (500 hours, left standing at 80°C) is ±10% or smaller, the change of x and y values, before and after the heat resistant test is ±0.015 or smaller, the change of transmissivity at 850 and 950 nm of the wavelength, before and after an acceleration light resistant test (100 W/m2, black panel temperature 60°C, humidity 60%RH and 24 hours continuous light irradiation) by a super xenon fade meter is ±10% or smaller and the changes in the x and y values, before and after the light resistant test, are ±0.015 or smaller. COPYRIGHT: (C)2007,JPO&INPIT