Material for the absorption of water, aqueous solutions and aqueous body fluids
AssigneeChemische Fabrik Stockhausen GmbH
InventorsMiroslav Chmelir, Alois Kunschner
Life of this patent
Estimating the term…
Abstract
An absorption material is produced by applying directly to a support in the presence of liquid an absorbent which is at least partially water-softened, and drying to remove the liquid so as to leave the absorbent directly on the support. The support may be fibrous or particulate like sawdust or it may be a textile sheet or paper. The absorbent may be an acrylic based polymer. Because the absorbent directly contacts the support the product has increased absorptive capacity and is stronger, making it especially useful as a diaper, tampon, sanitary napkin, surgical dressing, battery separator and/or filter for cigarette smoke or for liquids.
Claims12
A process for producing an absorption material comprising applying directly to a cellulosic fibrous support a suspension in a liquid of a water-insoluble cross-linked absorbent polymer or copolymer of acrylic, methacryclic or acrylamidomethylpropanesulfonic acid or of a salt thereof, or of acrylic amide or methacrylic amide with one another or with at least one of vinylpyrrolidone and vinyl acetate, and drying to remove the liquid so as to leave the absorbent directly on the support.
Dependencies are inferred from the claim text.