| 摘要 |
Novel ionically modified polysaccharides which contain alpha -glycosidic linkages, the ionic groups of which are attached to the polysaccharide component through the grouping of the formula -CO-NH-CH2-O-, the carbonyl group being attached to the ionic group and the oxygen atom being attached to the polysaccharide component, are prepared by reacting the polysaccharides with compounds that contain N-methylolamide groups, and are used for treating effluents and, in particular, for separating mixtures of substances containing ionic components by chromatography.
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