초록 ▼

A wound dressing has a wound-contact layer formed from a polyurethane foam. The foam comprises one part by weight of the reaction product of an isocyanate-capped prepolymer with water (and optionally other hydroxy-functional compounds), and from 0.03 to 0.3 parts by weight of a natural or synthetic

A wound dressing has a wound-contact layer formed from a polyurethane foam. The foam comprises one part by weight of the reaction product of an isocyanate-capped prepolymer with water (and optionally other hydroxy-functional compounds), and from 0.03 to 0.3 parts by weight of a natural or synthetic rubber. The isocyanate-capped prepolymer is preferably an isocyanate-capped ethyleneoxy/propyleneoxy copolymer, and the rubber is preferably an acrylic rubber.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of forming a polyurethane foam suitable for use as a wound-contacting layer, said method comprising the steps of:mixing 1 part by weight of an isocyanate-capped prepolymer having from 0.5 to 1.2 meq NCO groups/gm with from 0.012 to 0.21 parts by weight of rubbe

[ What is claimed is:] [1.]1. A method of forming a polyurethane foam suitable for use as a wound-contacting layer, said method comprising the steps of:mixing 1 part by weight of an isocyanate-capped prepolymer having from 0.5 to 1.2 meq NCO groups/gm with from 0.012 to 0.21 parts by weight of rubber solids in the form of a rubber latex and from 0.509 to 1.18 parts by weight of water, wherein the weight portion of water includes any water contained within the rubber latex;then driving water from the product thereby produced.