GEL-LIKE COATING FROM ELASTIC FOAM-POLYURETHANE FOR CLOSING WOUNDS OF VARIOUS ETIOLOGY Russian patent published in 2011 - IPC A61L15/26 A61F13/00 A61L15/18 B82B1/00 

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine, in particular, to polymer-based dressings, and can be applied in surgery for closing wounds of various etiology. Described is gel-like coating from elastic foam-polyurethane, which consists of polyol component including highly molecular simple oligoetherpolyol on the basis of propylene and ethylene oxide, water, urethane-formation activator, isocyanate component, which includes mixture of diphenylmethane diisocyanate isomers, activation additive, consisting of polyurethane chain extender, foam-opener, foam-hardener, in activation additive additionally introduced is foaming agent, as activator, used is "mixture of tertiary amines and tin-organic compounds with ratio 1:1 (wt fr.)", isocyanate component with content of isocyanate groups 26.0-32 wt % with the following ratio of ingredients in composition, wt fr.: highly molecular oligoetherpolyol - 100, water - 2.0-4.0, foaming agent - 2.0-4.0, urethane-formation catalyst (mixture of tertiary amines and tin-organic compounds with ratio 1:1 (wt fr.)), - 0.05-0.4, chain extender - 0.2-1.5, foam-opener - 0.2-1.5, foam-hardener - 0.2-1, isocyanate component with content of isocyanate groups 26.0-32 wt % - 30-60, and into composition of polyol component introduced are boehmite nanoparticles with size from 10 to 50 nm with its weight to 10% of polyol component weight.

EFFECT: improvement of sorbing properties of polyurethane coating due to strengthening capillary walls, reduction of their radius and extension of capillary system, which makes it possible to obtain sorbing volume of coating material exceeding 90%.

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