发明名称 |
Polyurethane elastomers |
摘要 |
A linear polymer is obtained by reacting together a polyethylene glycol or polypropylene glycol; a PEG-PPG-PEG or PPG-PEG-PPG block copolymer; a difunctional amine or diol; and a diisocyanate. A controlled release composition comprises the polymer together with an active agent. Active agents of molecular weight 200 to 20,000 may be used.
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申请公布号 |
US8361272(B2) |
申请公布日期 |
2013.01.29 |
申请号 |
US20070373002 |
申请日期 |
2007.06.27 |
申请人 |
FERRING B.V.;TUOMINEN JUKKA;ZURUTUZA AMAIA;LIVINGSTONE MARK;HALLIDAY JANET ANNE |
发明人 |
TUOMINEN JUKKA;ZURUTUZA AMAIA;LIVINGSTONE MARK;HALLIDAY JANET ANNE |
分类号 |
C09J4/00;A61K9/00;A61K47/00 |
主分类号 |
C09J4/00 |
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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