Patent ID: 6734225
Filing Date: 2004-05-11
Classification: C09B,C09D

Abstract:
An ink for an ink jet comprising a coloring composition comprising:(a) a dispersion medium; and (b) coloring particulates comprising: (b-1) a polymer which is selected from the group consisting of polyurethanes, polyesters, polyamides, polyureas and polycarbonates; and (b-2) an oil-soluble dye represented by formula (1): wherein R1 represents a hydrogen atom, aliphatic group, aromatic group, heterocyclic group, cyano, â€”OR11, â€”SR12, â€”CO2R13, â€”OCOR14, â€”NR15R16, â€”CONR17R18, â€”SO2R19, â€”SO2NR20R21, â€”NR22CONR23R24, â€”NR25CO2R26, â€”COR27, â€”NR28COR29 or â€”NR30SO2R31, and R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30 and R31 each represents independently a hydrogen atom, aliphatic group or aromatic group; wherein A represents â€”NR4R5 or a hydroxyl group, and R4 and R5 each represents independently a hydrogen atom, aliphatic group, aromatic group or heterocyclic group; wherein B1 represents &boxH;C(R6)â€” or &boxH;Nâ€” and B2 represents â€”C(R7)&boxH; or â€”N&boxH;; wherein R2, R3, R6 and R7 each represents independently a hydrogen atom, halogen atom, aliphatic group, aromatic group, heterocyclic group, cyano, â€”OR51, â€”SR52, â€”CO2R53, â€”OCOR54, â€”NR55R56, â€”CONR57R58, â€”SO2R59, â€”SO2NR60R61, â€”NR62CONR63R64, NR65CO2R66, â€”COR67, â€”NR68COR69 or â€”NR70SO2R71, and R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61, R62, R63, R64, R65, R66, R67, R68, R69, R70 and R71 each represents independently a hydrogen atom, aliphatic group or aromatic group; wherein R2 and R3, R3 and R4, R4 and R5, R5 and R6, or R6 and R7 may be mutually bound to form a ring; wherein X and Y each represents independently C(R8)&boxH; or N&boxH;, R8 represents a hydrogen atom, aliphatic group or aromatic group, either X or Y shall represent N&boxH;, and X and Y shall not be simultaneously â€”N&boxH;; and wherein the formula (1) two or more substituent groups represented by â€”NR170SO2R171 are present in the dye, and R170 and R171 each represents independently a hydrogen atom, aliphatic group or aromatic groups, and wherein the polymer and the oil-soluble dye are separate compounds.