C - Chemistry – Metallurgy – 08 – B
Patent
C - Chemistry, Metallurgy
08
B
260/133, 260/212
C08B 15/06 (2006.01) B01J 39/22 (2006.01) C02F 1/28 (2006.01) C08B 11/14 (2006.01) C08B 30/18 (2006.01) C08B 31/12 (2006.01) C08B 37/00 (2006.01) C08B 37/02 (2006.01)
Patent
CA 1277658
Anionically modified polysaccharides, process for their preparation and the use thereof Abstract of the Disclosure Novel chemically modified anionic polysaccharides which contain acid radicals of the formula Image attached to the polysaccharide component, wherein R1? is carboxy- alkyl 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 Image , 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.
499874
Ciba-Geigy Investments Ltd.
Fetherstonhaugh & Co.
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