发明名称 |
Polymers containing pendant acid functionalities and labile backbone bonds |
摘要 |
The instant invention is directed to a polymer with at least one labile backbone bond per repeat unit and at least one pendant acid functionality per thousand repeat units. The instant invention is also directed to a controlled release device which comprises: (A) a polymer with at least one labile backbone bond per repeat unit and at least one pendant acid functionality per thousand repeat units; and (B) a beneficial substance incorporated within or surrounded by the matrix of said polymer.
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申请公布号 |
US4765973(A) |
申请公布日期 |
1988.08.23 |
申请号 |
US19860915348 |
申请日期 |
1986.10.06 |
申请人 |
MERCK & CO., INC. |
发明人 |
HELLER, JORGE |
分类号 |
A61K9/20;C08G65/34;C08G85/00;(IPC1-7):A61K31/74 |
主分类号 |
A61K9/20 |
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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