发明申请
- 专利标题： Polymer Particles Containing Active Agents
- 专利标题（中）： 含有活性剂的聚合物颗粒
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申请号： US10594365申请日： 2005-04-02
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公开(公告)号： US20070224274A1公开(公告)日： 2007-09-27
- 发明人: Werner Siol
- 申请人： Werner Siol
- 优先权： DE102004016685.4 20040405
- 国际申请： PCT/EP05/03493 WO 20050402
- 主分类号： A61K47/32
- IPC分类号： A61K47/32 ; A61K47/48 ; C08F220/12
摘要：
The invention relates to active ingredient-containing polymer particles comprising a vinyl polymer from 10-80% by weight monomers comprising amino and/or carboxyl groups, which is insoluble in one part of the pH range 0-10 and is soluble in another part of the range, wherein these active ingredient-containing polymer particles comprise 3-1000 parts of active ingredient per part of vinyl polymer, have a particle size in the range 20 nm-8 μm and the vinyl polymer is >50% by weight composed of polymers having a molecular weight of
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