| abstract |
Graft copolymers of monosaccharides, disaccharides and oligosaccharides, of the reaction products and derivatives thereof and of a monomer mixture, which are obtainable by radical graft copolymerization of a monomer mixture comprising (A) 45-96%-wt. of at least one monoethylenically unsaturated C3-C10 monocarboxylic acid and/or the salt thereof with a monovalent cation or mixtures of C3-C10 monocarboxylic acids and/or their salts with monovalent cations, (B) 4-55%-wt. of at least one monoethylenically unsaturated, sulfonic- acid-groups-containing monomer, one monoethylenically unsaturated sulfuric acid ester, and/or vinylphosphonic acid and/or their salts with nomovalent cations, (C) 0-30%-wt. of at least one water- soluble, mono-ethylenically unsaturated compound modified with 2-50 moles of alkylene oxide per mole, (D) 0-45%-wt. of at least one further water-soluble, radically polymerizable monomer, (E) 0-30%-wt. other radically polymerizable monomers which are slightly soluble or insoluble in water, with the sum of A to E amounting to 100%-wt., in the presence of mono-, di- and oligosaccharides, their reaction products and derivatives or mixtures thereof, whereby the content of said saccharide components in the total mixture amounts to 5-60%-wt. |