Aqueous pigment dispersion and water-base pigment ink for ink-jet recording

The invention provides an aqueous pigment dispersion permitting easy preparation of water-base pigment ink for ink-jet recording which ink can form colored images excellent in rubfastness on various recording media, particularly, colored images excellent in color development on plain paper, and thos...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUMOTO TADASHI, ENOMOTO YUUYA, YASUI KENGO, SUNOUCHI KOZUE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	The invention provides an aqueous pigment dispersion permitting easy preparation of water-base pigment ink for ink-jet recording which ink can form colored images excellent in rubfastness on various recording media, particularly, colored images excellent in color development on plain paper, and those excellent in gloss on special papers. An aqueous pigment dispersion comprising carbon black or anorganic pigment (P), a (meth)acrylic copolymer (A), a polyoxyethylene/polyoxypropylene block copolymer (B) represented by the general formula (1), a polyether polyurethane (C), a basic substance, and water, wherein the mass ratio of the total of the nonvolatile components (A), (B) and (C) to (P), (A+B+C)/P, is 0.3 to 1.6 and the A/(A+B+C) mass ratio is 0.05 to 0.45. [Chemical formula 1] HO-(C2H4O)a-(C3H6O)b-(C2H4O)c-H (1).