AQUEOUS PIGMENT DISPERSION

PROBLEM TO BE SOLVED: To obtain a new low-viscosity aqueous pigment dispersion, having a low yield point and good in dispersion and storage stabilities by blending a pigment with a pigment dispersing agent and water and further water-insoluble solid fine particles. SOLUTION: This aqueous pigment dis...

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Bibliographische Detailangaben
Hauptverfasser:	KATO MICHITOMO, FUJITANI SHUNEI
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 new low-viscosity aqueous pigment dispersion, having a low yield point and good in dispersion and storage stabilities by blending a pigment with a pigment dispersing agent and water and further water-insoluble solid fine particles. SOLUTION: This aqueous pigment dispersion consists essentially of (A) a pigment (preferably having 0.1-1μm average particle diameter measured by a centrifugal sedimentation method, etc.), (B) a pigment dispersing agent (e.g. a water-soluble amino resin or an alkyd resin), (C) water-soluble solid fine particles and (D) water (preferably deionized water). The component (C) is inorganic fine solid particles having =90% total light transmittance when dispersing the fine particles at 50wt.% concentration in water. For example, fine titanium oxide particles, etc., are concretely cited. Furthermore, the amounts of the components used are preferably 10-70wt.% component (A) based on the dispersion, 1-3wt.% component (B) based on the component (A) and 5-250 pts.wt. component (C) based on 100 pts.wt. component (A).