发明名称 |
Composite structure including a low vinyl acetate layer |
摘要 |
A composite structure suitable for making transdermal delivery devices includes in sequence: (a) a liner film layer; (b) a containment layer having from zero to 15 wt % content of vinyl acetate repeating units, the layer including either a thermal bonding copolyester resin or a combination of an ethylene-vinyl acetate component and a nonpolar polymer; and (c) a polyester film layer less than 20 mum in thickness. A drug layer lies either between the liner film layer and the containment layer or within a concave depression in the containment layer. A composition including an ethylene-vinyl acetate component and an ABA block copolymer, wherein the A segments of the block copolymer are styrenic segments, is also provided. The composition includes between 1 and 15 wt % of vinyl acetate repeating units, based on the total weight of composition exclusive of any solvents.
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申请公布号 |
US2006127463(A1) |
申请公布日期 |
2006.06.15 |
申请号 |
US20040013131 |
申请日期 |
2004.12.15 |
申请人 |
NUGARA PETER N;BEGNOCHE BRUCE C;FRANZYSHEN STEPHEN K;DENG FENGHUA;SANDERS DANIEL C;CREEGAN CHRISTINE A;COSENTINO STEVEN R |
发明人 |
NUGARA PETER N.;BEGNOCHE BRUCE C.;FRANZYSHEN STEPHEN K.;DENG FENGHUA;SANDERS DANIEL C.;CREEGAN CHRISTINE A.;COSENTINO STEVEN R. |
分类号 |
A61F13/02;A61L15/16 |
主分类号 |
A61F13/02 |
代理机构 |
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代理人 |
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地址 |
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