Patent ID: 6176973
Filing Date: 2001-01-23
Classification: A61L,C08B,D21C,D21H,Y10T

Abstract:
Method for preparing an absorbent cellulose product having improved compressibility and decreased emissions during production of the product, which method comprises the steps of:defibering the cellulose fibers;impregnating the cellulose fibers with a quantity, which is effective for crosslinking, of one or more water-soluble polymers which are produced in advance, which have an average molecular weight, Mw, of between 350 and 70,000 g/mol, and which possess free acid or aldehyde groups; wherein said water-soluble polymers have been produced by reacting a first di-, tri- or poly-functional compound with one or more di-, tri- or poly-functional alcohols and wherein said product has a density of at least 230 kg/m.sup.3 following application of a pressure of at most 50 bar;drying the impregnated substance;defibering the impregnated substance at the latest after drying; andcrosslinking the defibered cellulose fibers, in the dry state, by heating the impregnated, dried and defibered cellulose product.