发明名称 |
PERMEABLE COMPOSITIONS AND METHODS FOR THEIR PREPARATION |
摘要 |
The present invention involves compositions having variable permeation and/or porosity and objects made therefrom. The compositions are prepared by dispersing a pore-forming agent in a polymer matrix by agitation. The composition is density developed resulting in a variable concentration in pore-forming agent throughout the mixture through application of an external force on the mixture with or without continued agitation. The pore-forming agent is then leached from the mixture to form a polymer matrix having variable permeability and/or porosity. |
申请公布号 |
WO9932204(A3) |
申请公布日期 |
1999.09.23 |
申请号 |
WO1998US27351 |
申请日期 |
1998.12.22 |
申请人 |
THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM |
发明人 |
AGRAWAL, C., MAULI;ATHANASIOU, KYRIACOS, A. |
分类号 |
A61L27/18;A61L27/56;B01D67/00;B01D69/02;B29C67/20;C08J9/26;C08J9/28 |
主分类号 |
A61L27/18 |
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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