Patent ID: 6818304
Filing Date: 2004-11-16
Classification: C08J,C08K,Y10T

Abstract:
An optical film having a layer made of a transparent resin containing an anthraquinone colorant of formula (1) or (2) and a diimmonium type colorant of the formula (3): wherein the formulae (1) and (2), each of R1 to R15 which are independent of one another, represents a hydrogen atom, an alkyl group which may have a substituent excluding a halogenated alkyl group, an alkoxy group, an aryloxy group, a halogen atom, an alkoxycarbonyl group, a halogenated alkyl group, an alkylthio group, an arylthio group, a cyano group, a nitro group, an amino group, an alkylamino group, an amide group, an acyloxy group, a hydroxyl group, a sulfo group or a carboxyl group, wherein the formula (2), R16 represents a hydrogen atom or an alkyl group which may have a substituent, and wherein formula (3), each of R17 to R24 which are independent of one another, represents a hydrogen atom, an alkyl group which may have a substituent, an alkenyl group which may have a substituent, an aryl group which may have a substituent, or an alkynyl group which may have a substituent, and Xâˆ’ is an anion.