Wound dressing having a polyurethane foam layer and a cover...

G - Physics – 06 – F

Patent

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Details

G06F 19/00 (2011.01) A61L 15/26 (2006.01) A61F 13/00 (2006.01) C08G 18/10 (2006.01)

Patent

CA 2737468

The present invention relates to a layer composite, suited as a wound dressing, comprising a foam layer (10) and a cover layer (20), wherein the cover layer (20) comprises thermoplastic polymer, preferably polyurethane, and is at least partially directly connected to the foam layer (10), and wherein the foam layer (10) comprises a polyurethane foam which is obtained by foaming and drying a composition comprising an aqueous, anionically hydrophilized polyurethane dispersion (I). The foam can be stabilized using ethylene oxide/propylene oxide block copolymers. The invention further relates to a method for producing a layer composite of said kind and to the use thereof, for example as a wound dressing.

L'invention concerne un pansement en couches, utilisé en tant que pansement pour plaies, comprenant une couche de mousse (10) et une couche de couverture (20), la couche de couverture (20) contenant un polymère thermoplastique, de préférence du polyuréthane, et cette couche est au moins partiellement reliée directement à la couche de mousse (10). La couche de mousse (10) comprend une mousse de polyuréthane, obtenue par moussage puis séchage d'une composition comprenant une dispersion de polyuréthane (I) aqueuse et hydrophile à l'état anionique. La mousse peut être stabilisée avec des blocs d'oxyde d'éthylène/ oxyde propylène copolymères. L'invention concerne également un procédé de production dudit pansement en couches ainsi que son utilisation en tant que pansement pour plaies, par exemple.

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