RECORDING FLUID

PROBLEM TO BE SOLVED: To obtain a recording fluid having improved printing density, storage stability, delivery stability, light resistance, water resistance, fastness and delivery durability by mixing an aqueous medium with a specified carbon black. SOLUTION: An aqueous medium comprising water and...

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Bibliographische Detailangaben
Hauptverfasser:	HIRASA TAKASHI, YAMADA MASAHIRO, ISHIZU MAKOTO
Format:	Patent
Sprache:	eng
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 PREPARATION OF CARBON BLACK TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a recording fluid having improved printing density, storage stability, delivery stability, light resistance, water resistance, fastness and delivery durability by mixing an aqueous medium with a specified carbon black. SOLUTION: An aqueous medium comprising water and 5-30wt.% water-soluble organic solvent is mixed with 1-10wt.% carbon black having a DBP absorption of 140-280ml/100g, a volatile matter content of 4wt.% or below, a pH of 7-14, a BET specific surface area of 100m /g or above and a primary-particle diameter of 24nm or below and 3-100wt.%, based on the carbon black, dispersant selected among anionic, nonionic, cationic and amphoteric surfactants and polymeric dispersants, and the obtained mixture is subjected to frictional grinding and dispersion treatments.