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The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier, an insoluble pigment, a polymeric dispersant, and a specific cosolvent mixture comprising 1,3-propanediol or 1,4-butanediol with a second component selected from polyethylene glycol-type ma...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KAPPELE, WILLIAM D, PEARSON, ANNA M
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier, an insoluble pigment, a polymeric dispersant, and a specific cosolvent mixture comprising 1,3-propanediol or 1,4-butanediol with a second component selected from polyethylene glycol-type materials and polyol/alkylene oxide condensates. The ink compositions demonstrate excellent stability, good maintenance characteristics for the printers in which they are used, and excellent optical density and print characteristics.