| abstract |
Aq. printing ink for ink jet printing contains (a) 0.1-15 wt.% solid pigment formulation contg. 10-90 wt.% pigment and 90-10 wt.% polyacrylic resin contg. COOH gps.; (b) 0.1-10 wt.% water-soluble anionic dye; (c) 0.5-10 wt.% drying accelerator; (d) 0.1-5 wt.% base; (e) 0.01-5 wt.% nonionic surfactant of formula R-(CH2CH2-O)-Y-(CHY1-CHY2O)q-R1 (I); (f) 0.01-5.0 wt.% of (f-1) 8-22C alkanol, (f-2) 6-24C alkandiol, (f-3) nonionic surfactant of formula R2-(CH2-CH2-O)r-(CHY3-CHY4-O)s-H (II) and/or (f-4) dialkyl sulphosuccinate of formula R3O-CO-CH2-CH(SO3<->M<+>)-CO-OR4 (III); and (g) water. In the formulae, R and R2 are each 8-22C alkyl; R1 is a 1-8C alkyl, 5-8C cycloalkyl, phenyl-(1-4C)-alkyl or styryl; R3 and R4 are each 1-16C alkyl; one of Y1 and Y2 and one of Y3 and Y4 are Me or Et and the others are H; p, q, r, s = 0-24 with (p+q) and (r+s) = 2-24; and M<+> is a cation. |