Abstract: A process for coloring a textile substrate comprises a textile substrate (a) being pretreated with an aqueous pretreatment liquor comprising (A) at least one resin selected from melamin derivatives, dimethyloldihydroxy-ethyleneurea (DMDHEU) and derivatives of DMDHEU, and (B) at least one thickener, and thereafter (b) being printed by the ink jet process.

Abstract: Aqueous pretreatment liquor for preparing a textile substrate for inkjet printing, comprising (A) one or more polycationic compounds, (B) one or more thickeners, (C) optionally customary additives, (C) water. Preferred polycationic compounds (A) are polymers or copolymers of diallyldialkylammonium monomers. Preferred thickeners are obtainable from (i) polyetherdiols, (ii) diisocyanates and (iii) compounds, R of the general formula R—OH, R—SH, R—NH2, RR NH or R—COOH, where R is a hydrophobic aliphatic or aromatic radical of at least 4 carbon atoms and R—OH may have been alkoxylated, and also further derivatives thereof that are capable of forming a urethane, thiourethane or urea bond, or from (i) polyetherdiols with (iv) compounds of the general formula R—OH or R—COOH, where R is a hydrophobic aliphatic or aromatic radical of at least 4 carbon atoms and R—OH may have been alkoxylated, and also further derivatives thereof that are capable of forming an ether or ester bond, and or from compounds (ii) and (iii).

Abstract: The invention concerns dyeing formulations consisting of the following elements: a) at least a dye selected from the group comprising hardly water-soluble dyes a1) and water-soluble dyes a2), b) water, c) in the case of hardly water-soluble dyes a1), at least a dispersant and d) at least a compound of formula (I), wherein the variables are defined as follows: R1, R2 are selected independently of each other from the group consisting of hydrogen, C1-C4 alkyl, CH2—O—R3, R3 representing hydrogen or C1-C4 alkyl.

Abstract: The invention relates to colorant preparations containing the following main constituents: A) at least one dispersed (A1) or dissolved (A2) colorant; B) if a colorant corresponding to (A1) is used, a dispersing agent; C) a low-molecular polytetrahydurofurane (C1), optionally mixed with one or more difficult-to-evaporate, water-soluble or water-miscible organic solvents (C2); and D) water.