发明名称 |
Active ingredient patch for low-melting and/or volatile active ingredients |
摘要 |
A method of preparing a patch for the controlled release of readily available volatile active substances to the skin is disclosed. The patch comprises a back layer, and, bonded to the back layer, a water-insoluble adhesive film consisting of a pressure-sensitive fusion adhesive, plus a detachable film covering the adhesive film. The pressure-sensitive fusion adhesive contains a triple-block copolymer of polystyrene block copoly(ethylene/butylene) block polystyrene at a concentration of 10 to 80% by wt., and an active substance at a concentration of 2.5 to 25% by weight, which is a readily volatile liquid at the temperature at which the adhesive bonds.
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申请公布号 |
US5603948(A) |
申请公布日期 |
1997.02.18 |
申请号 |
US19950483312 |
申请日期 |
1995.06.07 |
申请人 |
SCHWARZ PHARMA AG |
发明人 |
MERKLE, HANS P.;NAGELS, KLAUS;SCHACHT, DIETRICH;WOLFF, HANS-MICHAEL |
分类号 |
A61K9/70;A61L15/58;(IPC1-7):A61F13/02 |
主分类号 |
A61K9/70 |
代理机构 |
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主权项 |
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地址 |
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