Surgery – Respiratory method or device – Ozone or ion generation
Patent
1975-03-17
1977-01-11
Lesmes, George F.
Surgery
Respiratory method or device
Ozone or ion generation
128287, 128290R, 260 775Q, 428284, 428286, 428425, 428290, 428303, A61F 1316, C07C 8730
Patent
active
040021718
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.
REFERENCES:
patent: 3479310 (1969-11-01), Dietrich et al.
patent: 3527221 (1970-09-01), Croon et al.
patent: 3640967 (1972-02-01), Konig et al.
patent: 3714095 (1973-01-01), Reischl et al.
patent: 3753826 (1973-08-01), Plummer
patent: 3778476 (1973-12-01), Rembaum et al.
patent: 3804092 (1974-04-01), Tune
Lesmes George F.
Lipow Jason
Personal Products Company
Roche R. J.
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