HYDROGEL MATRIX HAVING INCREASED ABSORPTION CAPACITY FOR LIQUIDS
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United States of America Patent
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Issued Date -
Aug 8, 2013
app pub date -
Dec 14, 2010
filing date -
Dec 24, 2009
priority date (Note) -
Abandoned
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Abstract
The invention relates to a multilayer wound dressing, in particular for moist wound treatment, comprising a first layer as an absorbent layer, which comprises a hydrogel matrix, and at least one second layer, which is applied to the first layer on the side facing away from the wound. The hydrogel matrix comprises 54 to 60 wt % of propylene glycol, a pre-polymer having isophorone diisocyanate end groups and a diamine based on polyethylene oxide in a quantity of a total of 38 to 42 wt %, 0 to 5 wt % of an inorganic chloride, and the remainder water, wherein the ratio of the reactive groups of isocyanate to the amine groups of the diamine is intended to be 1.25 to 1.35.
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