Ink jet ink compositions comprising hydroxyamide derivatives and printing processes

摘要

An ink-jet ink composition suitable for high resolution ink jet printing, comprises: (a) water; (b) a colourant selected from a dye, and/or a pigment; and (c) a material selected from a hydroxyamide derivative having at least hydroxyl and one amide; a mercaptoamide derivative having at least mercaptol and at least one amide; a hydroxythioamide derivative having at least hydroxyl and at least thioamide; a mercaptothioamide derivative having at least one mercaptol and thioamide; an oxyalkylene reaction product of these derivatives; and/or a thioalkylene reaction product of these derivatives. The hydroxyamide derivative is given by formula (I). Also claimed is a thermal ink-jet printing process which comprises depositing four or more multi-colour ink-jet inks by their corresponding printheads. The inks are sequenced according to digital signals, onto a print substrate. The multi-colour ink-jet inks have at least ink given by parts (a)-(c). R = CnH2n+1, cyclic CnH2n-1, C6H5, C5H4N, substituted or unsubstituted 3-20C aromatic and heterocyclic groups; OCnH2n+1 where n = 1-40; R1 = CmH2m+1, cyclic CmH2m-1, C6H5, C5H4N, polyethyleneglycoxyphenyl, polypropyleneglycoxyphenyl, poly(ethylene-co-propylene) glycoxyphenyl, substituted and unsubstituted 3-20C aromatic and heterocyclic; m = 1-40; and X = H, CkH2k+1; k = 0-20; p = 2-20; w = 1-20; y = 0-4-; z = 0-40; and z+y >=1.