Patent ID: 6558880
Filing Date: 2003-05-06
Classification: B41M,G03C,Y10S

Abstract:
A heat-bleachable antihalation composition comprising:a) a hexaarylbiimidazole, and b) an oxonol dye that is represented by one of the following Structures I-A, I-B, and I-C: wherein W, Y, and Y1 independently represent the non-metallic atoms necessary to form carbocyclic or heterocyclic rings, R1 and R3 are independently carbocyclic or heterocyclic aromatic groups, R2 and R4 are independently electron-withdrawing groups, G1, G2, G3, and G4 are independently oxygen or a dicyanomethylene group, L1, through L7 independently represent a substituted or unsubstituted methine group, M represents a counterion, k is the number of M counterions necessary to provide neutral charge for Structure I-A, I-B, or I-C, p and q, are independently 0 or 1, and r is 0, 1, or 2.