Dyes containing polyhydroxyl groups for ink-jet printing inks.

摘要

A dye used in ink compositions for ink-jet printing comprises an aromatic dye molecule having attached to the backbone thereof from one to four polyhydroxyl-substituted groups having the formula selected from the group consisting of: (a) CH2OH-(CHOH)nCH2O-, where n = 2 to 10; (b) On-1CnH2n-1-O-, where n = 5 to 7; and (c) C6nH5n+1O5n)-O-, where n = 1 to about 100. These dyes have improved water solubility and improved interaction with paper.