SELF-DISPERSING PIGMENT AND PROCESS OF MAKING AND USE OF SAME

A process is provided in which a pigment is oxidated with ozone in an aqueous environment in which the mixture of ozone, water and pigment is subjected to a dispersive mixing operation; and/or the pH of the mixture is maintained in a range of 6-8, whereby the pigment is self-dispersing and preferabl...

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Bibliographische Detailangaben
Hauptverfasser:	EISEMAN, MICHAEL, J, HELD, ROBERT, PAUL, PATEL, DHIREN, V, RAY, YIAING, SPINELLI, HARRY, JOSEPH, WITMAN, SANDRA, L, YEH, AN-GONG, HOHMAN, JAMES, L
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMISTRY COLOUR PRINTING CORRECTION OF TYPOGRAPHICAL ERRORS DYES i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LAKES LINING MACHINES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS PERFORMING OPERATIONS POLISHES PREPARATION OF CARBON BLACK PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES TYPEWRITERS
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Beschreibung
Zusammenfassung:	A process is provided in which a pigment is oxidated with ozone in an aqueous environment in which the mixture of ozone, water and pigment is subjected to a dispersive mixing operation; and/or the pH of the mixture is maintained in a range of 6-8, whereby the pigment is self-dispersing and preferably has an acid value of less than 3 mu moles/M . Pigments from this process and ink jet inks containing the self-dispersing pigments, are also provided. L'invention concerne un procédé dans lequel un pigment est oxydé à l'ozone dans un environnement aqueux dans lequel le mélange d'ozone, d'eau et de pigment est soumis à une opération de mélange dispersif ; et/ou le pH du mélange est maintenu dans une plage de 6-8, le pigment étant auto-dispersant et possèdant, de préférence, une valeur acide inférieure à 3 mu moles/M . Les pigments fabriqués selon ledit procédé et des encres pour jet d'encre contenant lesdits pigments auto-dispersants, sont également décrits.