Method for preparing a non-aqueous dispersion of particles of a metal and/or a metal compound
Patent 6051614 Issued on April 18, 2000. Estimated Expiration Date: 
April 18, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 18, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1431079 2383653 2408654 3042540 3625856 3884713 3912677 Liquid suspension of particles of a metal belonging to the platinum group and a method for the manufacture of such a suspension Dispersion Colloidal metal dispersion, and a colloidal metal complex InventorsAssigneeApplicationNo. 997169 filed on 12/28/1992US 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 FirmForeign Patent References
International ClassesB01D 012/00B01F 003/00 Foreign Application Priority Data1991-12-28 JPAbstractDisclosed 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.Other References
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