A process of preparation of water soluble wound dressing materials

摘要

The invention provides water soluble wound dressing materials comprising from 5% to 50% of an alginate ester of a C1-C6 polyhydric alcohol; from 50% to 95% of a humectant consisting of one or more C1-C6 monohydric or polyhydric alcohols; and from 0% to 30% of water, the percentages being calculated by weight based on the weight of the material when anhydrous. The preferred alginate ester is propylene glycol alginate (PGA). The materials dissolve in water at temperatures below 40 DEG C. The materials are normally produced in the form of soft, conformable, wound-friendly films. The materials may also comprise medicaments or antiseptics.