Patent ID: 6824712
Filing Date: 2004-11-30
Classification: C07D,C09B

Abstract:
A selectively light-absorptive material for a color display, comprising a tetrazaporphyrine derivative having formula (1) where R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of hydrogen; an unsubstituted phenyl group, an alkyl group of 1 to 8 carbon atoms; an alkoxy group of 1 to 8 carbon atoms; a nitro group; halogen atoms; a halide; a cyano group; an alkylamino group of 1 to 8 carbon atoms; an aminoalkyl group of 1 to 8 carbon atoms; and a phenyl group having a substitutent selected from an alkyl group of 1 to 8 carbon atoms, an alkoxy group of 1 to 8 carbon atoms, a nitro group, halogen atoms, a halide, an alkylamino group of 1 to 8 carbon atoms, an aminoalkyl group of 1 to 8 carbon atoms and a cyano group, or two neighboring substituents among R1, R2, R3, R4, R5, R6, R7 and R8 are fused and substituted with 1 to 3 aromatic cyclic compounds having formula (2a) through (2f), and unsubstituted groups among R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of hydrogen, an alkyl group of 1 to 8 carbon atoms, an alkoxy group of 1 to 8 carbon atoms, an allyl group, halogen atoms, a halide, a cyano group and a nitro group where Râ€², Râ€³,Râ€³â€³ and Râ€³â€³â€² are independently selected from the group consisting of hydrogen, an alkyl group of 1 to 8 carbon atoms, an alkoxy group of 1 to 8 carbon atoms, an allyl group, a cyano group and a nitro group; X is halogen atoms or alkyl sulfonate of 1 to 8 carbon atoms; Y is an alkyl or allyl group of 1 to 8 carbon atoms; and dashed lines indicate a portion coupled with the pyrrole group of formula (1),a plastic resin; and an organic solvent selected from the group consisting of toluene, xylene, propylalcohol, isopropylalcohol, methylcellosolve, ethylcellosolve and dimethylformamide.