Method of making polyurethane foam

Details Method of making polyurethane foam Method of making polyurethane foam

1992-11-04

1996-11-05

Seidleck, James J.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Web, sheet or filament bases; compositions of bandages; or...

424443, 424447, 521117, 521130, 521159, 602 46, 206440, 53425, 53426, A61L 1526, A61F 1300, C08J 908, C08G 1810

Patent

active

055715290

ABSTRACT:
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 C.sub.1 to C.sub.3 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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