B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 13/02 (2006.01) A61L 15/60 (2006.01) B05D 3/02 (2006.01) C08F 220/04 (2006.01) C08J 3/12 (2006.01)
Patent
CA 2086002
21 A B S T R A C T The present invention relates to a powdery, water-in- soluble, cross-linked resin which absorbs aqueous or serous liquids as well as blood and is composed of a) 55 to 99.9%-wt. polymerized, unsaturated, polymeriza- ble, acid-groups-containing monomers which are neu- tralized to the extent of at least 25 mol-%, b) 0 to 40%-wt. polymerized. unsaturated monomers copolymer- izable with a), c) 0.1 to 5.0%-wt. of a cross-linking agent, and d) 0 to 30%-wt. of a water-soluble polymer, whereby the weight amounts a) to d) relate to anhy- drous polymer. The polymer is characterized by the fact that the resin powder has been coated with 0.1 to 5%-wt. of an alkylene carbonate, relative to resin powder, and heated to a temperature of 150 to 300°C. The present invention further relates to a method of producing said polymer and to the use thereof in sani- tary articles, such as diapers and the like, and in absorbent constructions consisting of hydrophilic fibers and absorbing resin.
Kurt Dahmen
Richard Mertens
Borden Ladner Gervais Llp
Chemische Fabrik Stockhausen Gmbh
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