Ink compositions
AssigneeZeneca Limited
InventorsRoy Bradbury, Clive Moscrop, Barry Huston Meyrick, Mark Holbrook
Life of this patent
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Abstract
An ink comprising water, a water-dissipatable polymer and one or more dyes of Formula (1): wherein: R1 is H or a substituent; R2 and R3 are each independently optionally substituted alkyl, aryl or aralkyl, or R2 and R3 together with the carbon atom to which they are attached form an optionally substituted ring; R4 is H or optionally substituted alkyl, aryl or aralkyl; and D is an optionally substituted arylene group. Also claimed are the dyes of Formula (1), ink jet printing processes and cartridges containing the inks.
Claims9
An ink comprising water, a water-dissipatable polymer and one or more dyes of Formula (1):
- wherein:
- R1 is H;
- halo;
- optionally substituted alkyl, aryl or aralkyl;
- or a group of formula —X—R5 wherein X is O, S, SO, SO2 or NR6 wherein R5 and R6 are each independently H or optionally substituted alkyl, aryl or aralkyl;
- R2 and R3 are each independently optionally substituted alkyl, aryl or aralkyl, or R2 and R3 together with the carbon atom to which they are attached form an optionally substituted ring;
- R4 is H or optionally substituted alkyl, aryl or aralkyl;
- and
- D is an optionally substituted arylene group.
A composition comprising water and two or more dyes of Formula (1)
- wherein:
- R1 is H;
- halo;
- optionally substituted alkyl, aryl or aralkyl;
- or a group of formula —X—R5 wherein X is O, S, SO, SO2 or NR6 wherein R5 and R6 are each independently H or optionally substituted alkyl, aryl or aralkyl;
- R2 and R3 are each independently optionally substituted alkyl, aryl or aralkyl, or R2 and R3 together with the carbon atom to which they are attached form an optionally substituted ring;
- R4 is H or optionally substituted alkyl, aryl or aralkyl;
- and
- D is an optionally substituted arylene group.
Dependencies are inferred from the claim text.