INKS COMPRISING MODIFIED PIGMENTS AND METHODS FOR MAKING AND USING THE SAME

• Main Authors: GLOSTER, DANIEL, F, BOGOMOLNY, MICHAEL, KENNEDY, JEFF, SUJEETH, P., K, CROSS, RYAN, R, GRAFF, DIANE, V
• Format: Patent
• Language: English; French
• Published: 26.06.2008
• Subjects: 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; PREPARATION OF CARBON BLACK; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF MATERIALS THEREFOR; WOODSTAINS

An ink composition that includes a self-dispersing pigment that has about 0.02 to about 1.0 mMoles of S and about 0.2 to about 2.0 mMoles of active hydrogen per gram of pigment, water, and an organic solvent. A method of making an ink composition that includes sulfonating a pigment, subsequently oxidizing the pigment to produce a modified pigment, and incorporating the modified pigment into an ink. L'invention concerne une composition d'encre qui comprend un pigment auto-dispersant qui a environ 0,02 à environ 1,0 mMole de S et environ 0,2 à environ 2,0 mMoles d'hydrogène actif par gramme de pigment, de l'eau et un solvant organique. L'invention concerne également un procédé de fabrication d'une composition d'encre qui comprend la sulfonation d'un pigment, l'oxydation ultérieure du pigment pour produire un pigment modifié, et l'incorporation du pigment modifié dans une encre.