D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 11/20 (2006.01) A61L 15/28 (2006.01) A61L 15/60 (2006.01) C08B 15/10 (2006.01) D21C 9/00 (2006.01) D21H 17/06 (2006.01) D21H 17/53 (2006.01)
Patent
CA 2226218
An absorbent cellulose product includes cellulose fibres which are cross- linked by reaction with an effective quantity of one or more water-soluble polymers which are produced in advance, which have an average molecular weight of between 350 and 70,000 g/mol, and which possess free acid or aldehyde groups. When the product is being prepared, the cellulose fibres are impregnated with the polymers in aqueous solution. The impregnated substance is dried and defibered at the latest after drying, after which the defibered cellulose fibres are cross-linked in the dry state by means of heating the impregnated, dried and defibered cellulose product.
L'invention a trait à un produit absorbant à base de cellulose, comportant des fibres de cellulose réticulées par réaction avec une quantité efficace d'un ou de plusieurs polymères hydrosolubles déjà préparés, d'un poids moléculaire moyen compris entre 350 et 70 000 moles, et possédant des groupes acide ou aldhéhyde libres. En cours de préparation du produit, on imprègne les fibres de cellulose avec ces polymères dans une solution aqueuse. La substance imprégnée est séchée et défibrée, au plus tard, après séchage, à la suite de quoi les fibres de cellulose défibrées sont réticulées à l'état sec par chauffage du produit à base de cellulose imprégné, séché et défibré.
Borden Ladner Gervais Llp
Stora Enso Aktiebolag
Stora Kopparbergs Bergslags Aktiebolag
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