Moulded polyurethane hydrogels

Abstract

MOULDED POLYURETHANE HYDROGELS Abstract The technology relates to a method of producing a moulded polyurethane hydrogel, for example a condom. The method involves forming a solution of at least one polyurethane having a molecular weight of between about 40000 to about 500000 in a water:organic polar solvent comprising less than about 40% (v / v) water; applying a layer of the solution to a mould; drying the layer of the first solution to form a polyurethane film on the mould; and contacting the polyurethane film with a swelling agent under conditions such that the film forms a polyurethane hydrogel with a swelling agent content of between about 1% to about 95%. MOULDED POLYURETHANE HYDROGELS Abstract 95%. 20 26 21 68 55 14 A ug 2 02 6 M O U L D E D P O L Y U R E T H A N E H Y D R O G E L S 2 0 2 6 2 1 6 8 5 5 1 4 2 0 2 6 A u g A b s t r a c t 9 5 % .

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