Quinacridone pigments, pigment dispersions and aqueous inkjet inks

The present invention addresses the problem of providing an innovative quinacridone pigment which can maintain high chroma while exhibiting viscosity stability that is superior to that of conventional pigments in aqueous IJ ink applications. The quinacridone pigment according to the present inventio...

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Bibliographische Detailangaben
Hauptverfasser:	SUGIURA KENICHI, SUNOUCHI KOZUE, KUDO ARATA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS LAKES 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 POLISHES PREPARATION OF CARBON BLACK TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention addresses the problem of providing an innovative quinacridone pigment which can maintain high chroma while exhibiting viscosity stability that is superior to that of conventional pigments in aqueous IJ ink applications. The quinacridone pigment according to the present invention has a specific surface area ratio of water vapor to nitrogen of 0.270 or more and less than 0.430. The pigment dispersion according to the present invention contains the quinacridone pigment and a solvent. The aqueous inkjet ink according to the present invention contains the pigment dispersion. 本发明所要解决的课题在于，提供一种在水性IJ油墨用途中发挥比以往的颜料更优异的粘度稳定性的基础上能够维持高彩度的创新的喹吖啶酮颜料。本发明的喹吖啶酮颜料中水蒸气与氮的比表面积比为0.270以上且小于0.430。本发明的颜料分散体含有上述喹吖啶酮颜料和溶剂。另外，本发明的水性喷墨油墨包含上述颜料分散体。