发明名称 |
PROCESS OF PRODUCING POLYLACTIC ACID-BASED RESIN MICROPARTICLES, POLYLACTIC ACID-BASED RESIN MICROPARTICLES AND COSMETICS |
摘要 |
A process of producing polylactic acid-based resin microparticles includes a dissolving process that forms a system, which can cause phase separation into two phases of a solution phase mainly composed of polylactic acid-based resin (A) and a solution phase mainly composed of polymer (B) different from polylactic acid-based resin, by dissolving the polylactic acid-based resin (A) and the polymer (B) different from polylactic acid-based resin in an ether-based organic solvent (C), an emulsion-forming process that forms an emulsion by applying a shear force to the system, and a microparticle-forming process that precipitates polylactic acid-based resin microparticles by contacting the emulsion with a poor solvent which has lower solubility of the polylactic acid-based resin (A) than the ether-based organic solvent (C).
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申请公布号 |
US2013309497(A1) |
申请公布日期 |
2013.11.21 |
申请号 |
US201113982804 |
申请日期 |
2011.12.22 |
申请人 |
TAKEZAKI HIROSHI;KOBAYASHI HIROSHI;SAITO MAKIKO;ASANO ITARU;TORAY INDUSTRIES, INC. |
发明人 |
TAKEZAKI HIROSHI;KOBAYASHI HIROSHI;SAITO MAKIKO;ASANO ITARU |
分类号 |
A61K8/85;C08G63/08;G03G9/08 |
主分类号 |
A61K8/85 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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