申请人:AMERICAN CYANAMID COMPANY
公开号:EP0481600A2
公开(公告)日:1992-04-22
There is provided a solid material useful in medicine, especially a film material for use as a wound dressing or as a drug delivery vehicle, which comprises a molecular mixture of (a) a compound which has film-forming properties, for example hydroxyethylcellulose, hydroxypropylmethylcellulose or polyvinyl alcohol, and (b) a polyoxyethylene-polyoxypropylene block copolymer or a tetrasubstituted derivative of ethylene-diamine in which the substituents are block copolymers of polyoxyethylene-polyoxypropylene, as a modifier. The molecular mixture may be formed, for example, by evaporating a solution of the two components (a) and (b) in a solvent, or by cooling a liquid composition comprising at least one of components (a) and (b) in molten form from an elevated temperature.
本发明提供了一种用于医药的固体材料,特别是一种用作伤口敷料或给药载体的薄膜材料,它包括以下物质的分子混合物:(a) 一种具有成膜特性的化合物,例如羟乙基纤维素、羟丙基甲基纤维素或聚乙烯醇,以及(b) 聚氧乙烯-聚氧丙烯嵌段共聚物或乙烯-二甲基纤维素的四代衍生物、(b) 作为改性剂的聚氧乙烯-聚氧丙烯嵌段共聚物或乙二胺的四取代衍生物,其中的取代基为聚氧乙烯-聚氧丙烯嵌段共聚物。分子混合物可通过以下方式形成:例如,蒸发两种组分(a)和(b)在溶剂中的溶液,或从高温下冷却包含至少一种熔融状态组分(a)和(b)的液体组合物。