PIGMENT COMPOSITION, PRODUCTION METHOD THEREFOR, AND WATER-BASED INK COMPOSITION

• Main Authors: MORIYA, Kai, NISHIMURA, Naoko
• Format: Patent
• Language: English; French; German
• Published: 08.07.2020
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; FILLING PASTES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LAKES; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

A pigment composition including at least one pigment selected from the group consisting of a perinone-based pigment and a perylene-based pigment, water, a resin having a constitutional unit represented by Formula 1, and at least one compound selected from the group consisting of a phthalimide compound having a carboxyalkyl group and a naphthalimide compound having a carboxyalkyl group; a method for producing thereof; and an aqueous ink composition using the pigment composition. In Formula 1, R1represents a hydrogen atom or a methyl group, L2represents -C(=O)O-, -OC(=O)-, or -C(=O)NR2- and R2represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and R3represents an alkyl group having 6 or more carbon atoms.