作者: Jie Zhang , James A. Roszell
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摘要: A cationic pharmaceutically active ingredient containing composition is provided. The includes a ingredient, hydrophobic polymer/hydrophilic polymer adduct comprising poly(vinylpyrrolidone/alkylene) and carboxylic acid groups, hydroxyl or mixture of groups compatibilizing amount long chain organic having carbon at least 8 atoms, about 50 wt. % water.