WATER-SOLUBLE AZO COMPOUND OR SALT THEREOF, INK COMPOSITION, AND COLORED MATERIAL

摘要

Disclosed is a water-soluble azo compound represented by the formula (1) or a salt thereof. Also disclosed is an ink composition comprising the water-soluble azo compound or the salt thereof. The compound has a hue having high clearness suitable for ink-jet recording, can provide a recorded material having high water-resistant fastness and can be prepared into an ink composition having excellent storage stability. (1) wherein n represents a number of 1 or 2; x represents a number of 2 to 4; and A represents a bivalent linkage group represented by any one of the general formulae (2) to (4): (2); (3); and (4) wherein y represents an integer of 2 to 6; and w represents an integer of 1 to 4.