Title:
METHOD FOR PRODUCING ORGANIC FINE PARTICLES
Document Type and Number:
WIPO Patent Application WO/2017/221314
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a method for producing organic fine particles, which is capable of easily and stably controlling the particle diameters of organic fine particles when the organic fine particles are produced by means of a poor solvent process.
A method for producing organic fine particles, wherein a poor solvent (A) and a good solvent (B), in which an organic material is dissolved, are mixed and organic fine particles are precipitated in the mixed solution. In this method, an aqueous solution containing a water-soluble polymer (A1) that has at least a hydroxyl group is used as the poor solvent (A) and the pH of the mixed solution is adjusted to be within the range of from 3.5 to 8.5 during the precipitation of organic fine particles, so that the particle diameters of the organic fine particles are controlled, thereby obtaining organic fine particles having desired particle diameters.
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Inventors:
ENOMURA MASAKAZU (JP)
ARAKI KAEKO (JP)
ARAKI KAEKO (JP)
Application Number:
PCT/JP2016/068312
Publication Date:
December 28, 2017
Filing Date:
June 20, 2016
Export Citation:
Assignee:
M TECHNIQUE CO LTD (JP)
International Classes:
B01J19/00
Domestic Patent References:
| WO2009008391A1 | 2009-01-15 |
Foreign References:
| JP2015520149A | 2015-07-16 |
Attorney, Agent or Firm:
SAMEJIMA Takenobu (JP)
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