PIGMENT DISPERSION FOR INK JET INK, INK JET INK, AND PRINTED MATTER

The present invention relates to a pigment dispersion for ink jet ink, including a binder (A), a pigment (B), and an aqueous medium (C). The pigment dispersion is characterized in that the binder (A) is a binder containing a urethane resin (A1) which is a reaction product of polyol (a1), containing...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Shigemori, Minoru, Hattori, Iwao, Suzuki, Naruhito, Nishijima, Takashi
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS CORRECTION OF TYPOGRAPHICAL ERRORS DYES FILLING PASTES i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME INKS LINING MACHINES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention relates to a pigment dispersion for ink jet ink, including a binder (A), a pigment (B), and an aqueous medium (C). The pigment dispersion is characterized in that the binder (A) is a binder containing a urethane resin (A1) which is a reaction product of polyol (a1), containing polyol (a1-1) having an acid group and polyester polyol (a1-2) other than the polyol (a1-1), with polyisocyanate (a2) containing polyisocyanate (a2-1) having a ring structure, the acid groups possessed by the urethane resin (A1) are partially or entirely neutralized, and the glass transition temperature of the urethane resin (A1) is 70° C. or less.