PURPOSE: To continuously prepare dispersion liquid droplets having a uniform particle size, by a method wherein an inner cylinder and an outer cylinder are rotated in relative relationship and shearing force imparted to a mixed liquid consisting of a dispersing medium and a dispersed liquid flowing through the gap between the inner and the outer cylinders is gradually increased continuously or stepwise.
CONSTITUTION: A dispersing medium and a dispersed liquid are prepared in a proper ratio in a preparation tank 1 and dispersed by a dispersing means 2 in such a manner that the dispersed liquid is formed into particles with a proper size. In the next step, an inner cylinder 5 is rotated and the above mentioned mixed liquid is sent into the gap between the inner cylinder 5 and an outer cylinder 4 from the liquid inlet 4a of said outer cylinder 4. Because shearing force gradually increased by the peripheral speed of the inner cylinder 5 becoming faster toward the side surface side thereof is acted on the mixed liquid passing through the gap between the inner cylinder 5 and the outer cylinder 4, the dispersion liquid is gradually comminuted. By this method, dispersion liquid droplets narrow in particle size distribution and uniform in a particle size can be continuously prepared. In addition, this apparatus is suitably utilized in preparing a toner particle used in an electrophotographic copier or a matte material particle used in a photographic film.
| JPH09230531 | HEAT DEVELOPABLE PHOTOSENSITIVE MATERIAL |
| JPS61118741 | PHOTORESIST MATERIAL |
HANEDA GENTAROU
AKIYAMA MASAMI
| JPS5427584A | 1979-03-01 |