发明名称 |
BIODEGRADABLE, SUPER ABSORBENT POLYMER HYDROGELS AND A METHOD FOR THEIR PREPARATION |
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 .
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申请公布号 |
WO2006070337(A9) |
申请公布日期 |
2007.06.21 |
申请号 |
WO2005IB54412 |
申请日期 |
2005.12.28 |
申请人 |
AMBROSIO, LUIGI;NICOLAIS, LUIGI;SANNINO, ALESSANDRO |
发明人 |
AMBROSIO, LUIGI;NICOLAIS, LUIGI;SANNINO, ALESSANDRO |
分类号 |
C08B15/00;C08B11/20;C08J3/075;C08J3/24;C08L1/28 |
主分类号 |
C08B15/00 |
代理机构 |
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