ANIONICALLY MODIFIED POLYSACCHARIDES, PROCESS FOR THEIR PREPARATION AND THE USE THEREOF

Anionically modified polysaccharides, process for their preparation and the use thereof Novel chemically modified anionic polysaccharides which contain acid radicals of the formula attached to the polysaccharide component, wherein R1? is carboxyalkyl or dicarboxyalkyl containing 1 to 5 carbon atoms...

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Bibliographische Detailangaben
1. Verfasser:	MERZ, JUERG
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS POLYSACCHARIDES SEPARATION TESTING THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Zusammenfassung:	Anionically modified polysaccharides, process for their preparation and the use thereof Novel chemically modified anionic polysaccharides which contain acid radicals of the formula attached to the polysaccharide component, wherein R1? is carboxyalkyl or dicarboxyalkyl containing 1 to 5 carbon atoms in the alkyl moiety, or is carboxyphenyl or ketocarboxymethyl, and Q1? is a water-soluble cation, are obtained by reacting the polysaccharides with compounds that contain N-methylolamide groups, in particular with novel compounds of formula , wherein R1? and Q1? have the given meanings, and are used for purifying effluents and, in particular, for the separation by chromatography of mixtures of substances which contain amphoteric or cationic components.