Disazodyes for ink-jet printing
AssigneeFujifilm Imaging Colorants Limited
InventorGavin Wright
Life of this patent
Estimating the term…
Abstract
A process for printing an image on a substrate comprising applying to the substrate by means of an ink jet printer an ink comprising a compound of Formula (1) or salt thereof: Also claimed are compounds, inks, printed substrates and the use of compounds in preparing ink jet printing inks. The compounds provide inks which when printed exhibit good light fastness and ozone fastness.
Claims24
A process for printing an image on a substrate comprising applying to the substrate by means of an ink jet printer an ink comprising a compound of Formula (1) or salt thereof:
- wherein:
- R4, R5, R6 and R7 are each independently H or an optionally substituted substituent or R4 and R5 and/or R6 and R7 together with the carbon atoms to which they are attached form an optionally substituted aryl or heterocyclic ring;
- X and Z are each independently H or an optionally substituted substituent;
- R1 is H or optionally substituted C1-4-alkyl;
- R2 and R3 are each independently H, C1-4-alkyl, —CONR8R9, SO2NR8R9 or aryl groups;
- wherein R8 and R9 are each independently H, optionally substituted C1-8-alkyl, an optionally substituted aryl or heterocyclic ring, or R8 and R9 together with the nitrogen atom to which they are attached form an optionally substituted 5- or 6-membered ring;
- G and G′ are each independently a sulfonic acid group, carboxylic acid group or phosphonic acid group;
- n and m are each independently is 0, 1, 2, 3, 4 or 5;
- and
- a and b are each independently 0, 1 or 2.
An ink comprising a liquid medium and a compound of Formula (1) or salt thereof:
- wherein:
- R4, R5, R6 and R7 are each independently H or an optionally substituted substituent or R4 and R5 and/or R6 and R7 together with the carbon atoms to which they are attached form an optionally substituted aryl or heterocyclic ring;
- X and Z are each independently H or an optionally substituted substituent;
- R1 is H or optionally substituted C1-4-alkyl;
- R2 and R3 are each independently H, C1-4-alkyl, —CONR8R9, —SO2NR8R9 or aryl groups;
- wherein R8 and R9 are each independently H, optionally substituted C1-8-alkyl, an optionally substituted aryl or heterocyclic ring, or R8 and R9 together with the nitrogen atom to which they are attached form an optionally substituted 5- or 6-membered ring;
- G and G′ are each independently a sulfonic acid group, carboxylic acid group or phosphonic acid group;
- n and m are each independently is 0, 1, 2, 3, 4 or 5;
- and
- a and b are each independently 0, 1 or 2;
- with the proviso that the compound of Formula (1) is not of the Formula A, B or C
A compound of Formula (2) in the free acid or salt form:
Dependencies are inferred from the claim text.