发明名称 |
Polymersomes and production method thereof |
摘要 |
It is an object of the invention to provide a polymersome excellent in the safety and feeling in use; in particular, there is no sticky feeling but there is a good refreshing feeling; and with excellent base-agent stability. A polymersome of the present invention comprises a block-type alkylene oxide derivative represented by the following formula (I) as the membrane component: R1O-[(EO)l(AO)m(EO)n]-R2(I) wherein AO is an oxyalkylene group having 3 to 4 carbon atoms, EO is an oxyethylene group, m and 1+n are the average addition mole numbers for the oxyalkylene group and the oxyethylene group, respectively, and 1@m@70, 1@l+n@70; the percentage of the oxyethylene groups with respect to the sum of the oxyalkylene groups having 3 to 4 carbon atoms and the oxyethylene groups is 20 to 80 mass %; the addition pattern of the oxyalkylene groups having 3 to 4 carbon atoms and the oxyethylene groups is block-type; and R1 and R2 are identical or different hydrocarbon groups having 1 to 4 carbon atoms. |
申请公布号 |
US8603533(B2) |
申请公布日期 |
2013.12.10 |
申请号 |
US201013512375 |
申请日期 |
2010.07.12 |
申请人 |
SUGIYAMA YUKI;OHMORI TAKASHI;KOGA NOBUYOSHI;SHISEIDO COMPANY, LTD. |
发明人 |
SUGIYAMA YUKI;OHMORI TAKASHI;KOGA NOBUYOSHI |
分类号 |
A61K8/14;A61K8/11;A61K8/86;A61K9/14;A61Q19/00;C08G18/48 |
主分类号 |
A61K8/14 |
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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