Quinacridone pigment of low amine content and method for producing same

Provided are a quinacridone pigment having a low content of aromatic primary amine, a method for producing the same, and gravure flexo ink, colorant for plastic, paint, lithographic ink, toner, and ink-jet ink using this pigment. A quinacridone pigment having a low aromatic primary amine content is...

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Bibliographische Detailangaben
Hauptverfasser:	SUGIYAMA KAZUHIRO, YASUI KENGO, SUNOUCHI KOZUE
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY CINEMATOGRAPHY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES ELECTROGRAPHY ELECTROPHOTOGRAPHY FILLING PASTES HETEROCYCLIC COMPOUNDS HOLOGRAPHY INKS LAKES MAGNETOGRAPHY 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 PHOTOGRAPHY PHYSICS POLISHES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Provided are a quinacridone pigment having a low content of aromatic primary amine, a method for producing the same, and gravure flexo ink, colorant for plastic, paint, lithographic ink, toner, and ink-jet ink using this pigment. A quinacridone pigment having a low aromatic primary amine content is provided by washing a quinacridone pigment by at least one type of solvent selected from water and organic solvents or by decomposing by oxidizing the aromatic amine by adding an oxidizing agent to a pigment slurry comprising a quinacridone pigment and at least one type of solvent selected from water and organic solvents.