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PROCEDE DE PREPARATION D'UN STRATIFIE EXTRUDE A CHAUD
专利权人:
INC.;AUXILIUM INTERNATIONAL HOLDINGS
发明人:
CROWLEY, MICHAEL, M.,KEEN, JUSTIN, M.,KOLENG, JOHN, J.,ZHANG, FENG
申请号:
EP07759187
公开号:
EP2010366A4
申请日:
2007.03.22
申请国别(地区):
EP
年份:
2013
代理人:
摘要:
A process for the preparation of a bioadhesive laminate comprising a hot-melt extruded reservoir layer and a hot-melt extruded backing layer is provided. The reservoir layer comprises a thermoplastic bioadhesive composition containing an active agent. An active agent-containing thermoplastic bioadhesive hydrophilic composition is hot-melt coextruded with a hydrophobic composition to form at least a bi-layered laminate. The hydrophilic composition and the hydrophobic composition have at least one polymer in common. In addition, the melt flow index of the hydrophobic composition is within 50% of the melt flow index of the hydrophilic composition. As a result, the laminate has a uniform transverse cross-section and/or a uniform longitudinal cross-section throughout a major of the length of the laminate. Moreover, when the laminate is divided into unit doses of approximately the same size, they have a high degree of content uniformity with respect to the active agent(s) present therein.
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中国工程科技知识中心
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