Technology to produce emulsions in 10 seconds

Emulsification, nanoemulsion, supercritical water
Information no
Appeal point
A method that can be nano-emulsified in just 10 seconds
Wide versatility, usable in a wide range of industrial fields
The present inventor reproduced a high temperature and high pressure environment of hot water ejected from a hot water ejection hole on the deep sea floor in a laboratory, and found that the water became supercritical water under the environment. By utilizing this supercritical water state, we succeeded in easily producing a nanoemulsion in which oil droplets with a diameter of 100 nm or less are dispersed in water within a short time of 10 seconds.
As a result of detailed examination of the conditions for forming the nanoemulsion, the present invention has been achieved as described below.

(1) Water-insoluble substance to be emulsified and heated and pressurized water are continuously or intermittently supplied to the confluencer under pressure with maintaining temperature and pressure near the gas/liquid critical point of water (374 degree Celsius, 22.1MPa). This is the step of compatibilizing the water-insoluble substance to be emulsified and water.
(2) The above compatibilized material consisting of water-insoluble substance and water and surfactant are supplied to another confluent device under temperature and pressure conditions near the gas/liquid critical point of water. The resulting mixture of compatibilized material and surfactant is cooled to a temperature of 100 degree Celsius. or lower at a cooling rate of 10 degree Celsius /sec or more to obtain a liquid in which a water-insoluble substance is dispersed in water or a liquid in which water is dispersed in a water-insoluble substance.
Schematic image
Wide range of industrial fields such as food, pharmaceuticals, cosmetics, chemistry, agriculture, printing, paints, inks and petroleum
Relational patent
Item name
Method of manufacturing emulsion
Filing date
Shigeru Deguchi
Nao Ifuku