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US08557281B2 Water-swellable polymers 有权
水溶胀性聚合物

Water-swellable polymers
摘要:
A pharmaceutical controlled release composition in solid dosage form is provided which comprises (I) a water-swell able linear polymer obtainable by reacting together: (a) a polyethylene oxide; (b) a C5 to C20 diol; and (c) a diisocyanate; and (II) a releasable pharmaceutically active agent.
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