| abstract |
A polyamide resin useful in the preparation of hot-melt inks for ink-jet printing is prepared by the condensation polymerization reaction of a monoacid, a second reactant selected from aminoalcohols and blends of aminoalcohols and diamines, and a diacid. Preferably, the monoacid, second reactant and diacid are reacted together in mole ratios of 2:2:1. Optionally, a monoamine or monoalcohol may be substituted for a portion of the second reactant and the diacid. The polyamides afford the ink compositions with a low viscosity at the elevated operating temperatures of an ink-jet printer, yet are solid at room temperature and contribute good adhesion to the printed substrate. |