PROCESSO PARA A PREPARACAO DE UM MATERIAL ORTOPEDICO PARA MOLDACAO A BASE DE UM PRE-POLIMERO DE POLI-ISOCIANATO QUE POSSUI UMA REDUZIDA ADERENCIA E UM REDUZIDO DESLIZAMENTO

摘要

An orthopaedic dressing material which contains a sheet-like textile structure which is coated or impregnated with a mixture of a polyisocyanate prepolymer and of an effective anti-adhesive amount of one or more hydrophilic bisurethanes is disclosed. In a preferred embodiment, the hydrophilic bisurethane is derived from the reaction of a polyethylene glycol with a molecular weight of about 4000 and methylene-4,4'-bis(phenyl isocyanate) to form a prepolymer terminating in isocyanate, which is then reacted with ethanol.