Method for preparing a non-fibrous porous material
AssigneeColoplast A/S
InventorsLARS SCHOENFELDT, BRIAN NIELSEN, JOSEF AYZMA
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Abstract
A method for preparing a non-fibrous porous material essentially consisting of one or more hydrophilic polymeric components(s) or one or more hydrophilic polymeric component(s) and one or more pharmaceutical medicaments, the method comprising forming an aqueous solution, sol or gel comprising one or more hydrophilic polymers and/or pharmaceutical medicaments, freezing or foaming the solution, dehydrating the frozen or foamed solution leaving a non-fibrous porous material in a solid, porous form, and optionally subjecting the resulting porous material to a dry heat treatment.
Claims10
A method for preparing a wound dressing comprising a non-fibrous porous material being swellable but not soluble in water, said material essentially consisting of one or more natural or semi-synthetic hydrophilic polymers or one or more hydrophilic polymeric component(s) and one or more pharmaceutical medicaments characterised in that the method comprises forming an aqueous solution or sol gel comprising at least two hydrophilic, polyionic/polyfunctional polymers having opposite charges, forming an object of the solution or sol gel having a desired shape and dehydrating the same leaving a non-fibrous porous material in a solid, porous form, and subjecting the resulting porous material to a dry heat treatment of an elevated temperature of from 40 to 220° C. for a period of from 1 minute to several hours.
Dependencies are inferred from the claim text.