| 摘要 |
<p>The invention provides a process of producing a superabsorbent polysaccharide derivative by oxidation of a α-glucan, glucomannan or galactomannan to introduce aldehyde functions, the oxidised poly-saccharide subsequently being reacted with sulphur dioxide or an equivalent thereof to produce a hydroxysulphonated polysaccharide. The polysaccharide may be crosslinked before or after the oxidation. The preferred polysaccharide is starch or guar.</p> |
