Manufacture of web superabsorbent polymer and fiber

Details Manufacture of web superabsorbent polymer and fiber Manufacture of web superabsorbent polymer and fiber

A - Human Necessities

61

L

A61L 15/60 (2006.01) A61F 13/49 (2006.01)

Patent

CA 2376866

A web of superabsorbent polymer and fiber made by an <i>in situ</i> neutralization, wet-laid process, wherein the degree of neutralization of the superabsorbent polymer is partial, preferably less than about 80 mol %. The web exhibits an excellent centrifuge retention capacity property, as compared to prior webs of superabsorbent polymer and cellulosic fiber made by <i>in situ</i> neutralization, wherein the degree of neutralization is total, such as 100 mol % or more.

L'invention concerne une bande continue en polymère et fibre superabsorbants, fabriquée selon un procédé au mouillé avec neutralisation <i>in situ</i>, dans laquelle le degré de neutralisation du polymère superabsorbant est partiel, de préférence inférieur à environ 80 % molaire. La bande continue présente une excellente capacité de rétention à la centrifugation par comparaison avec des bandes continues existantes en polymère et fibre cellulosique superabsorbants, qui sont obtenues par neutralisation <i>in situ</i> et présentent un degré de neutralisation total, par exemple d'au moins 100 % molaire.

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