Method for hydrophilizing absorbent foam materials

Details Method for hydrophilizing absorbent foam materials Method for hydrophilizing absorbent foam materials

C - Chemistry, Metallurgy

08

J

C08J 9/40 (2006.01) A61F 13/15 (2006.01) A61F 13/56 (2006.01) A61L 15/20 (2006.01) A61L 15/22 (2006.01) A61L 15/42 (2006.01) C08F 2/32 (2006.01) C08F 2/44 (2006.01) C08J 9/28 (2006.01) C08K 5/10 (2006.01) C09K 3/00 (2006.01)

Patent

CA 2114524

Normally hydrophobic foams, such as polyurethane foams and polymerized water-in-oil emulsion foams, are rendered hydrophilic by means of treatment with sorbitan monolaurate. Thus, a polymeric foam can be prepared or treated with sorbitan monolaurate and thereafter dried to leave a substantially uniformly distributed residue of sorbitan monolaurate on the internal foam surfaces. The resulting treated foams are rendered hydrophilic and are thus suitable for use in absorbent devices, including diapers, sanitary napkins, bandages, and the like.

Des mousses normalement hydrophobes, comme les mousses de polyuréthane et les mousses polymérisées par émulsion eau dans huile, sont rendues hydrophiles au moyen d'un traitement au monolaurate de sorbitane. Ainsi, une mousse polymérique peut être préparée ou traitée avec du monolaurate de sorbitane et séchée pour laisser, sur les surfaces internes de la mousse, des résidus de monolaurate de sorbitane dont la distribution est substantiellement uniforme. Les mousses traitées obtenues sont rendues hydrophiles et, par conséquent, conviennent pour utilisation dans les produits absorbants, comme les couches, les serviettes hygiéniques, les pansements et autres produits semblables.

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