Biodegradable, Super Absorbent Polymer Hydrogels and a Method For Their Preparation
    3.
    发明申请
    Biodegradable, Super Absorbent Polymer Hydrogels and a Method For Their Preparation 审中-公开
    可生物降解,超吸收性聚合物水凝胶及其制备方法

    公开(公告)号:US20080227944A1

    公开(公告)日:2008-09-18

    申请号:US11722855

    申请日:2005-12-28

    IPC分类号: C08F251/02

    摘要: The invention relates to a method for the preparation of a superabsorbent polymer hydrogel, comprising the steps of (i) crosslinking a 3% overall aqueous solution of carboxymethylcellulose sodium salt and hydroxyethylcellulose with 5% carbodiimide, in the presence of an acid catalyst; (ii) washing the gel obtained at least once by swelling in a polar organic solvent; and (iii) drying the gel by phase inversion in a non-solvent for cellulose. The invention further concerns the superabsorbent hydrogels obtainable by said method and the uses thereof.

    摘要翻译: 本发明涉及一种制备超吸收聚合物水凝胶的方法,包括以下步骤:(i)在酸催化剂存在下,将3%总羧甲基纤维素钠盐和羟乙基纤维素水溶液与5%碳二亚胺交联; (ii)通过在极性有机溶剂中溶胀洗涤至少一次获得的凝胶; 和(iii)通过纤维素的非溶剂中的相转化干燥凝胶。 本发明还涉及通过所述方法获得的超吸收剂水凝胶及其用途。