Invention Grant
- Patent Title: PH-dependent controlled release pharmaceutical composition for non-opioids with resistance against the influence of ethanol
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Application No.: US13120112Application Date: 2008-09-24
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Publication No.: US10933024B2Publication Date: 2021-03-02
- Inventor: Hans Baer , Thomas Fuerst , Gerhard Renner , Michael Gottschalk
- Applicant: Hans Baer , Thomas Fuerst , Gerhard Renner , Michael Gottschalk
- Applicant Address: DE Brombachtal; DE Frankfurt; DE Stockstadt am Rhein; DE Ober-Ramstadt
- Assignee: Hans Baer,Thomas Fuerst,Gerhard Renner,Michael Gottschalk
- Current Assignee: Hans Baer,Thomas Fuerst,Gerhard Renner,Michael Gottschalk
- Current Assignee Address: DE Brombachtal; DE Frankfurt; DE Stockstadt am Rhein; DE Ober-Ramstadt
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- International Application: PCT/EP2008/062767 WO 20080924
- International Announcement: WO2010/034344 WO 20100401
- Main IPC: A61K9/50
- IPC: A61K9/50 ; A61P25/32 ; A61P27/06 ; A61P11/06 ; A61P13/04

Abstract:
The invention relates to a pH-dependent controlled release pharmaceutical composition, comprising at least one pharmaceutical active ingredient, with the exception of opioids, wherein the core is coated at least by one coating layer, controlling the release of the pharmaceutical composition, wherein the coating layer comprises a polymer mixture of i) 40-95% by weight, based on dry weight of the polymer mixture, of at least one water insoluble essentially neutral vinyl polymer or copolymer, and ii) 5-60% by weight, based on dry weight of the polymer mixture, of at least one anionic polymer or copolymer, which is insoluble in a buffered medium below pH 4.0 and soluble at least in the range from pH 7.0 to pH 8.0, characterized in that the coating layer further comprises 110 to 250% by weight of a non-porous inert lubricant, 1 to 35% by weight of at least one neutral cellulosic compound and 1 to 25% by weight of at least one emulsifier, each calculated on dry weight of the polymer mixture.
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