Abstract: A compound of Formula (1): wherein: A1 and A2 are each independently optionally substituted phenyl or naphthyl; each Q independently is optionally substituted phenylene; each R1 independently is H or optionally substituted alkyl; R2 is H or optionally substituted alkyl; and R3 is alkyl carrying a sulpho group; provided that the compound of Formula (1) carries at least one carboxylic acid group; and provided the compound of Formula (1) is not of Formula (2): wherein: m is 1 or 2; n is 1 or 2; and x is 2 to 4. Also claimed are compositions and inks.

Abstract: A composition comprising a liquid medium and a compound of Formula (1) or a salt thereof: wherein: m is 1 or 2; n is 1 or 2; and x is 2 to 4. Also claimed are compounds and printing processes.

Abstract: A process for printing an image on a substrate comprising applying thereto a composition comprising a liquid medium and a compound of Formula (1): T-Q-N?N-L-T??Formula (1) wherein: each T independently is an azo group; Q is an optionally substituted, optionally metallised 1,8-dihydroxynaphthyl group; and L is a divalent organic linker group. Also claimed are compositions and dyes.

Abstract: A water soluble compound of Formula (1) or a salt thereof: wherein: Y is an electron withdrawing group; Y1 is H, alkyl or aryl, OR or NR2 in which each R independently is H, optionally substituted alkyl or optionally substituted aryl; or Y and Y1 together form a 5- or 6- membered ring; X1 is a group or atom with co-ordinates with M; M is hexa co-ordinate metal; G is a group of Formula (2), (3) or (4); and L1, L2 and L3, each independently represent ligands required to complete hexa-coordinate geometry around metal M; wherein: S is a water solubilizing group; Ar is a benzene or naphthalene group in which X is located ortho to the azo group; X is a group or atom which co-ordinates with M; Z provides atoms or groups which complete an optionally substituted 5- or 6-membered aromatic heterocyclic ring; Ring A is an optionally substituted aromatic ring; Ring B is an optionally substituted 5- or 6-membered aromatic heterocyclic ring; n is 0, 1, 2 or 3; and the * signify the points of attachment of t

Abstract: A process for printing an image on a substrate comprising applying thereto a composition comprising a liquid medium and a compound of Formula (1):

Abstract: A water soluble compound of Formula (1) or a salt thereof: wherein: