Water-soluble azo compound or salt thereof, ink composition, and colored object

• Main Authors: KAJIURA, NORIKO, MORITA, RYOUTAROU, SHISHIKURA, YUKA, SHIBUYA, YUUKI
• Format: Patent
• Language: Chinese; English
• Published: 01.08.2012
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; HETEROCYCLIC COMPOUNDS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LAKES; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; ORGANIC CHEMISTRY; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

The purpose of the present invention is to provide: a water-soluble yellow colorant (compound) which is highly soluble in water, has high color-developing properties, and gives recorded images having an excellent chroma; and a yellow ink composition which contains the colorant and is for use in various kinds of recording, in particular, ink-jet recording. The colorant is a water-soluble azo compound represented by formula (1) or a salt thereof. The ink composition, which contains the compound or salt, has high color-developing properties, has a chroma and a hue that are suited for ink-jet recording, gives recorded matter having high fastness properties of various kinds, and gives recorded images that are excellent in terms of storage stability or the like. In formula (1), x is an integer of 2-4, and group A represents an amino group represented by any of formulae (2) to (6). In formula (2), w is an integer of 2-6. In formula (3), v is an integer of 1-3.