Preparation of Spherical Fine Particulate Pigments within Water-in-Oil Emulsions and Their Properties (I)

概要

論文の詳細を見る
The control of the diameter and the sahpe of pigment during the process of preparation by using W/O emulsion has been attempted in order to increase dispersing and tinting abilities of the pigments. The pigment was prepared by reacting an acid dye with multinuclear aluminum salt within the aqueous phase of a W/O emulsion which was prepared by using a nonionic surfactant. This pigment consisted of fine spherical particles with diameters of less than 0.5 μm ; it also had excellent dispersing ability and good tinting properties. The diameter of spherical particles could be controlled by varying the concentrations of surfactant within the W/O emulsions. Due to the presence of a surfactant on the surface of pigment, the prepared pigments exhibited excellent dispersing ability.
Japan Society of Colour Materialの論文