SELF-DISPERSING PIGMENT DISPERSIONS AND INK JET INKS CONTAINING THEM

The disclosure provides a self dispersing pigment dispersion for use in inks comprising a pigment having a stabilizing group covalently attached to the pigment surface, and having an oil adsorption of at least about 155 to about 179 mL/100g, and an acid content of at least about 0.98 microequivalent...

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Bibliographische Detailangaben
Hauptverfasser:	KLUTH, ANTHONY W, ANTON, WAIFONG, L
Format:	Patent
Sprache:	eng ; fre
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 disclosure provides a self dispersing pigment dispersion for use in inks comprising a pigment having a stabilizing group covalently attached to the pigment surface, and having an oil adsorption of at least about 155 to about 179 mL/100g, and an acid content of at least about 0.98 microequivalent/m2, and wherein the pigment dispersion has a pigment densification rate of less than about 8.40 E-04 mL/second. Ink jet inks containing these self-dispersing pigments, are also provided. La présente invention concerne une dispersion de pigment autodispersant pour une utilisation dans des encres comprenant un pigment ayant un groupe stabilisant lié de façon covalente à la surface du pigment, et ayant une adsorption d'huile d'au moins environ 155 à environ 179 ml/100 g, et une teneur en acide d'au moins environ 0,98 microéquivalent/m², et où la dispersion de pigment a un taux de densification de pigment inférieur à environ 8,40E-04 ml/seconde. La présente invention concerne en outre des encres pour jet d'encre contenant ces pigments autodispersants.