Method of making polyurethane foam

Details Method of making polyurethane foam Method of making polyurethane foam

C - Chemistry, Metallurgy

08

G

C08G 18/10 (2006.01) A61L 15/26 (2006.01) A61L 15/42 (2006.01) A61L 26/00 (2006.01) C08G 18/12 (2006.01) C08G 18/48 (2006.01) C08J 9/28 (2006.01)

Patent

CA 2082364

A polyurethane foam suitable for use as a wound-contact layer in a wound dressing is made by mixing 1 part by weight of an isocyanate-capped prepolymer having from 0.5 to 1.2 meq NCO groups/g with from 0.4 to 1.0 parts by weight of water in the presence of from 0.05 to 0.4 parts by weight of a C1 to C3 monohydric alcohol, and then drying the product. The monohydric alcohol is preferably methanol, and the isocyanate-capped prepolymer is preferably an isocyanate-capped ethyleneoxy/propyleneoxy copolymer.

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