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 |
US2008227944(A1) |
申请公布日期 |
2008.09.18 |
申请号 |
US20050722855 |
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 |
C08F251/02 |
主分类号 |
C08F251/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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