Water soluble wound dressing materials
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United States of America Patent
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Apr 7, 1998
Grant Date -
N/A
app pub date -
Feb 28, 1994
filing date -
Mar 3, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides water soluble wound dressing materials comprising from 5% to 50% of an alginate ester of a C.sub.1 -C.sub.6 polyhydric alcohol; from 50% to 95% of a humectant consisting of one or more C.sub.1 -C.sub.6 monohydric or polyhydric alcohols; and from 0% to 30% of water, the percentages being calculated by weight based on the weight of the material when anhydrous. The preferred alginate ester is propylene glycol alginate (PGA). The materials dissolve in water at temperatures below 40.degree. C. The materials are normally produced in the form of soft, conformable, wound-friendly films. The materials may also comprise medicaments or antiseptics.
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