| 发明名称 | Polymer microparticles and process for production thereof | ||
| 摘要 | A process of producing polymer microparticles wherein, in a system which includes a polymer (A), a polymer (B) and an organic solvent and can cause phase separation into two phases of a solution phase mainly composed of the polymer (A) and a solution phase mainly composed of the polymer (B) when the polymer (A), the polymer (B) and the organic solvent are dissolved and mixed together, after an emulsion is formed at a temperature of 100° C. or higher, the polymer (A) is precipitated by bringing a poor solvent for the polymer (A) into contact with the emulsion. | ||
| 申请公布号 | US9080048(B2) | 申请公布日期 | 2015.07.14 |
| 申请号 | US201113876375 | 申请日期 | 2011.09.27 |
| 申请人 | Toray Industries, Inc. | 发明人 | Echigo Yuji;Asano Itaru;Kobayashi Hiroshi;Takezaki Hiroshi |
| 分类号 | C08K5/34;C08L29/04;C08L77/00;C08J3/14 | 主分类号 | C08K5/34 |
| 代理机构 | DLA Piper LLP (US) | 代理人 | DLA Piper LLP (US) |
| 主权项 | 1. A process of producing polymer microparticles wherein, in a system which comprises a polymer (A), a polymer (B) and an organic solvent and can cause phase separation into two phases of a solution phase mainly composed of said polymer (A) and a solution phase mainly composed of said polymer (B) when said polymer (A), said polymer (B) and said organic solvent are dissolved and mixed together, after an emulsion is formed at a temperature of 100° C., said polymer (A) is precipitated by bringing a poor solvent for said polymer (A) into contact with said emulsion, and wherein a temperature at which said poor solvent is brought into contact with said emulsion to precipitate said polymer (A) after said emulsion is formed is a temperature of a cooling crystallization temperature of said polymer (A) or higher. | ||
| 地址 | JP | ||