Invention Grant
- Patent Title: Substrates providing multiple releases of active agents
- Patent Title (中): 提供活性剂多次释放的底物
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Application No.: US12336243Application Date: 2008-12-16
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Publication No.: US08551517B2Publication Date: 2013-10-08
- Inventor: Douglas Robert Hoffman , Andrea Jo Smiltneek , Sara Ann Carney , Scott W. Wenzel , David William Koenig , Jeffery Richard Seidling
- Applicant: Douglas Robert Hoffman , Andrea Jo Smiltneek , Sara Ann Carney , Scott W. Wenzel , David William Koenig , Jeffery Richard Seidling
- Applicant Address: US WI Neenah
- Assignee: Kimberly-Clark Worldwide, Inc.
- Current Assignee: Kimberly-Clark Worldwide, Inc.
- Current Assignee Address: US WI Neenah
- Agent Denise L. Stoker; R. Joseph Foster, III
- Main IPC: A61K9/70
- IPC: A61K9/70 ; A61L31/12 ; A61L2/232 ; A01N25/34

Abstract:
The present disclosure comprises a polymeric substrate that provides multiple releases of active agents. A substrate for multiple phase delivery of active agents is provided having a first polymer matrix layer having a first active agent disposed therein, a second polymer matrix layer having a second active agent disposed therein, and a coacervate layer disposed between the first polymer matrix layer and the second polymer matrix layer. Selected first and second active agents are included in the first and second polymer matrices such that as the first and second polymer matrices dissolve, the active agents are released. Multiple phase active agent release is achieved by constructing multiple layers of a polymer matrix containing an active agents formed with polymers having different solubility characteristics or with active agents at different concentration levels.
Public/Granted literature
- US20100150989A1 SUBSTRATES PROVIDING MULTIPLE RELEASES OF ACTIVE AGENTS Public/Granted day:2010-06-17
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