Patent ID: 6054505
Filing Date: 2000-04-25
Classification: C09D

Abstract:
An ink composition which comprises (1) water; (2) a nonpolymeric salt comprising at least one cation and at least one anion; (3) an anionic dye; and (4) a polyquaternary amine compound, wherein the salt has a cation selected from the group consisting of alkali metal ions, alkaline earth ions, ammonium ions, N(CH.sub.3).sub.4.sup.+, H.sub.3 NCH.sub.2 CH.sub.2 NH.sub.3.sup.2+, (H.sub.3 C).sub.3 NCH.sub.2 CH.sub.2 N(CH.sub.3).sub.3.sup.2+, quaternized 1,4-diazabicyclo(2.2.2)octane, choline, ##STR62## wherein R is a long chain alkyl group with 12 carbon atoms, x and y are integers of 0, 1, or 2 representing the number of ethoxy groups, wherein x+y=2, and mixtures thereof.