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65results about How to "Light fastness" patented technology

Solubilized yellow dyes for inks with improved ozone and light stability

InactiveUS20050126431A1Improved hueExcellent toneMonoazo dyesInksHalogenWater soluble
The invention relates to an ink composition comprising a dye, wherein said dye comprises a structure of Formula I:
wherein R1 represents a hydrogen atom, a cyano group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, an alkylthio group, an arylthio group an acyl group, a substituted acyl group, a carboxyl group, a carbamoyl group, or a heterocyclic group; Za represents one of —N═, —NH— or —C(R8)═; and Zb and Zc each independently represents one of —N═or —C(R8)═; R8 represents a hydrogen, a substituted or unsubstituted alkyl or a substituted or unsubstituted alkenyl group, a substituted or unsubstituted alkynyl group or a heterocyclic group;
    [0001]
  • R2 represents a hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a halogen, a cyano group, a carboxyl or substituted carboxyl group, an acyl group, a substituted acyl group, a carbamoyl group, a nitro group, an alkyl or aryl sulfone, a sulfonic acid, a substituted or unsubstituted primary or secondary alkyl sulfonamide, a substituted or unsubstituted aryl sulfonamide or a heteroaryl group;
  • [0002]
  • R3 may be hydrogen or any non-metallic group;
  • [0003]
  • R4, R5, R6 may be H or any non-metallic group with the proviso that at least one of R4 or R6 represents any ionizable group which is capable of imparting water solubility to the dye;
  • [0004]
  • R5 may be present in any other position on the aromatic ring that is not occupied by R4 or R6.
Owner:EASTMAN KODAK CO
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