发明名称 |
Polymers with controlled physical state and bioerodibility |
摘要 |
Polymers useful as orthopedic implants or vehicles for the sustained delivery of pharmaceutical, cosmetic and agricultural agents are prepared in such a manner that the rate and degree to which they are hydrolyzed can be controlled without addition of exogenous acid. This control results from the incorporation of esters of short-chain alpha -hydroxy acids such as esters of glycolic acid, lactic acid or glycolic-co-lactic acid copolymer into the polymer chain and variation of the amount of these esters relative to the polymer as a whole.
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申请公布号 |
US5968543(A) |
申请公布日期 |
1999.10.19 |
申请号 |
US19970986035 |
申请日期 |
1997.12.05 |
申请人 |
ADVANCED POLYMER SYSTEMS, INC. |
发明人 |
HELLER, JORGE;NG, STEVEN Y. |
分类号 |
C08G63/664;C08G65/00;C08G65/34;(IPC1-7):A61F2/00;C08G2/00 |
主分类号 |
C08G63/664 |
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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