Liquid suspension of particles of a metal belonging to the platinum group and a method for the manufacture of such a suspension
Colloidal metal dispersion, and a colloidal metal complex
ApplicationNo. 997169 filed on 12/28/1992
US Classes:516/20, Primarily organic continuous liquid phase (e.g., organic liquid emulsified in an organic liquid)252/62.57, With scandium, yttrium, gallium, rare earth, or actinide502/173, Elemental metal in organic dispersing medium502/339, Of palladium or platinum502/344Of Group I (i.e., alkali, Ag, Au or Cu)
ExaminersPrimary: Wu, Shean C.
Assistant: Metzmaier, Daniel S.
Attorney, Agent or Firm
Foreign Patent References
International ClassesB01D 012/00
Foreign Application Priority Data1991-12-28 JP
AbstractDisclosed is a method for preparing a non-aqueous dispersion of particles of a metal and/or a metal compound, which comprises contacting an aqueous dispersion of particles of a metal and/or a metal compound with a water-immiscible, non-aqueous liquid in the presence of a surfactant and in the presence or absence of a water-soluble inorganic acid salt and/or a water-soluble organic acid salt exhibiting substantially no surface activity, wherein when the contacting of the aqueous dispersion with the non-aqueous liquid is conducted in the absence of the salt, the salt is added after the contacting, thereby causing the particles to be migrated from the aqueous dispersion into the non-aqueous liquid.