Abstract: A barrier film is provided for a product used for retaining body fluids. The barrier film comprises a cationic polyurethane having an ionic charge density sufficient to render the film dispersible in aqueous solutions of relatively low ionic strength yet resistant to body fluids.

Abstract: A binder for nonwoven fabrics is provided comprising a cationic polyurethane having an ionic charge density sufficient to render the fabric dispersible in aqueous solutions of relatively low ionic strength yet resistant to body fluids. The water-dispersible nonwoven fabrics comprise one or more layers of substantially uniformly laid fibers bound with the cationic polyurethane; exhibit good tensile strength in the presence of body fluids such as urine, blood and menstrual fluid; and can be incorporated in body fluid-retaining products such as sanitary napkins, disposable diapers, surgical dressings and the like. Binders containing condensation residues of a polyisocyanate with an aliphatic polyester polyol are biodegradable.