发明名称 |
POLYMERIC CARRIER COMPOSITIONS AND METHODS FOR THEIR PREPARATION AND USE |
摘要 |
Polymeric delivery systems for active substances are prepared by suspension polymerization of a porogen and monomer mixture in an immiscible phase, typically an aqueous immiscible phase. By properly controlling the polymerization conditions and percentage of cross-linking, relatively rigid beads are formed having a non-collapsible pore network containing the porogen. The porogen is then extracted from the pore network, and an active substance, such as a UV absorbant, and insect repellant, a steroid, an emollient, or the like, is introduced into the beads. |
申请公布号 |
WO8801164(A1) |
申请公布日期 |
1988.02.25 |
申请号 |
WO1987US02013 |
申请日期 |
1987.08.14 |
申请人 |
ADVANCED POLYMER SYSTEMS, INC. |
发明人 |
WON, RICHARD;KATZ, MARTIN;CHENG, CHUNG, H. |
分类号 |
A61K8/00;A01N25/10;A01N25/18;A61K8/02;A61K8/11;A61K8/33;A61K8/34;A61K8/35;A61K8/37;A61K8/72;A61K8/81;A61K9/00;A61K9/16;A61Q17/00;A61Q17/02;A61Q17/04;(IPC1-7):A61K7/42;A61K31/74 |
主分类号 |
A61K8/00 |
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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