METHOD FOR PRODUCING OIL-IN-WATER TYPE DISPERSION

摘要

PROBLEM TO BE SOLVED: To produce an oil-in-water type dispersion that gives droplets of high uniformity and stability over a wide range of operation conditions with reduced effect of the physical properties of a hydrophobic liquid and an aqueous medium. SOLUTION: A hydrophobic liquid is injected through a nozzle plate having a plurality of injection orifices into an aqueous medium forming a continuous phase whereby an oil-in-water type dispersion in which the droplets of the hydrophobic liquid are formed in the aqueous medium is prepared. In this case, the nozzle plate having the plurality of orifices of elliptical or rectangular cross sections is characteristically used.