Abstract: A process for printing an image on a substrate comprising the steps of: (a) applying an ink comprising polymer-encapsulated pigment particles and an aqueous medium to a substrate by means of an ink jet printer, wherein (i) the said particles are dispersed in the aqueous medium, and (ii) the said particles comprise a carboxy-functional dispersant crosslinked around a pigment core by a first crosslinking agent; and (b) crosslinking the polymer-encapsulated pigment particles with a second crosslinking agent. The process is particularly useful for printing polymeric substrates which come into contact with rubbing and/or moisture.

Abstract: A process for printing an image on a substrate comprising the steps of: (a) applying an ink comprising polymer-encapsulated pigment particles and an aqueous medium to a substrate by means of an ink jet printer, wherein (i) the said particles are dispersed in the aqueous medium, and (ii) the said particles comprise a carboxy-functional dispersant crosslinked around a pigment core by a first crosslinking agent; and (b) crosslinking the polymer-encapsulated pigment particles with a second crosslinking agent. The process is particularly useful for printing polymeric substrates which come into contact with rubbing and/or moisture.

Abstract: A compound of Formula (1) in the free acid or salt form: wherein: M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus of formula; each R1 and R2 independently is H, optionally substituted alkyl or optionally substituted aryl; each R3 independently is optionally substituted alkyl or optionally substituted aryl; each n independently is 1 or 2; x is 0 to 2; y is 0.1 to 2.5; x is 0.1 to 2.5; and the sum (x+y+z) is 2.2 to 4. Also compositions, ink jet printer inks, cartridges and processes and printed materials.

Abstract: A compound of Formula (1) in the free acid or salt form: wherein: M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus of formula; each R1 and R2 independently is H, optionally substituted alkyl or optionally substituted aryl; each R3 independently is optionally substituted alkyl or optionally substituted aryl; each n independently is 1 or 2; x is 0 to 2; y is 0.1 to 2.5; x is 0.1 to 2.5; and the sum (x+y+z) is 2.2 to 4. Also compositions, ink jet printer inks, cartridges and processes and printed materials.

Abstract: A metal chelate compound obtainable from contacting a transition metal salt with a compound of the Formula (1): wherein: x represents plural atoms required to form at least one optionally substituted 5- to 7-membered heterocyclic ring; and Ar is an optionally substituted stilbene, acenaphthylene, phenanthrene or anthracene group carrying a hydroxy, amino or carboxy group adjacent to the —N?N— group shown in Formula (1) or 6-hydroxyquinoline where the hydroxy group is adjacent to the —N?N— group shown in Formula (1); provided that when the compound of Formula (1) is of Formula: that, p, the level of sulfonation, is not in the range 1 to 2. Also compositions, inks, printed substrates and inkjet cartridges.

Abstract: A metal chelate compound obtainable from contacting a transition metal salt with a compound of the Formula (1) or a salt thereof: wherein p is 1 to 2. Also compositions, inks, printed substrates, ink-jet cartridges and ink-jet printers.

Abstract: A metal chelate compound obtainable from contacting a transition metal salt with a compound of the Formula (1) or a salt thereof: wherein p is 1 to 2. Also compositions, inks, printed substrates, ink-jet cartridges and ink-jet printers.

Abstract: A metal chelate compound obtainable from contacting a transition metal salt with a compound of the Formula (1): wherein: x represents plural atoms required to form at least one optionally substituted 5- to 7-membered heterocyclic ring; and Ar is an optionally substituted stilbene, acenaphthylene, phenanthrene or anthracene group carrying a hydroxy, amino or carboxy group adjacent to the —N?N— group shown in Formula (1) or 6-hydroxyquinoline where the hydroxy group is adjacent to the —N?N— group shown in Formula (1); provided that when the compound of Formula (1) is of Formula: that, p, the level of sulfonation, is not in the range 1 to 2. Also compositions, inks, printed substrates and inkjet cartridges.