METHOD FOR PRODUCING POLYMER MICROPARTICLES |
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| 申请号 | EP15806734 | 申请日 | 2015-06-01 | 公开(公告)号 | EP3153541A4 | 公开(公告)日 | 2018-01-10 |
| 申请人 | TORAY INDUSTRIES; | 发明人 | KONDO YOSHINORI; ECHIGO YUJI; KITAMURA AKIRA; TAKEZAKI HIROSHI; | ||||
| 摘要 | Provided is a method of producing polymer particles characterized in that, in a system in which a polymer A and a polymer B are dissolved in and mixed with an organic solvent to undergo phase separation into two phases which are a solution phase containing with the polymer A as a major component and a solution phase containing the polymer B as a major component, the polymer A, the polymer B, and the organic solvent are continuously supplied to a mixing apparatus to thereby allow an emulsion to be formed; the emulsion is supplied to a vessel and added continuously with a poor solvent for the polymer A in the vessel to allow the polymer A to precipitate ; and polymer A particles is continuously taken from the vessel. The present invention provides a method that allows for mass production by efficient processes of manufacturing and that continuously microparticulates and produces polymer particles with lower variability in the average particle diameter and a smaller particle diameter distribution index. | ||||||
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