公开(公告)号：US06765042B1

公开(公告)日：2004-07-20

申请号：US09868139

申请日：2001-09-19

申请人： Jeffrey Wilson Thornton ,  Bas Schraven ,  Harm Jan Thiewes ,  Dorine Lisa Van Brussel-Verreast ,  Luca Bemporad ,  Anne-Mieke Yvonne Wilhelmina Verwiiligen ,  Arie Cornelis Besemer ,  Pia Kalentuin

发明人： Jeffrey Wilson Thornton ,  Bas Schraven ,  Harm Jan Thiewes ,  Dorine Lisa Van Brussel-Verreast ,  Luca Bemporad ,  Anne-Mieke Yvonne Wilhelmina Verwiiligen ,  Arie Cornelis Besemer ,  Pia Kalentuin

IPC分类号： C08J324

CPC分类号： C08B15/005 ,  A61L15/28 ,  A61L15/60 ,  Y10S526/903 ,  C08L1/26 ,  C08L3/04

摘要： A process is disclosed for producing an acidic superabsorbent polysaccharide derivative, comprising the steps of: (a) crosslinking at least one polysaccharide containing acidic groups, such as carboxymethyl cellulose and/or 6-carboxy starch, with a crosslinking agent to produce a gel; (b) if necessary, adjusting the pH of the polysaccharide to a value between 3.5 and 5.5; (c) comminuting the acidified polysaccharide gel; and (d) drying the comminuted polysaccharide at elevated temperature. The superabsorbent polysaccharide obtainable by this process has a pH below 5 and provides odour control when contacted with malodorous fluids.

摘要翻译： 公开了一种制备酸性超吸收性多糖衍生物的方法，其包括以下步骤：（a）将至少一种含酸性基团的多糖例如羧甲基纤维素和/或6-羧基淀粉与交联剂交联以产生凝胶; （b）如果需要，将多糖的pH调节至3.5至5.5之间的值; （c）粉碎酸化多糖凝胶; 和（d）在升高的温度下干燥经粉碎的多糖。 通过该方法可获得的超吸收性多糖具有低于5的pH，并且当与恶臭液体接触时提供气味控制。