Abstract: Fine-particle, water-swellable polysaccharide graft copolymers by prepared inverse suspension polymerization of 5 to 40 parts of polysaccharide and 95 to 60 parts of an olefinically unsaturated carboxylic acid, in which an aqueous phase which contains the olefinically unsaturated carboxylic acid, polymerization initiator and 100 to 75 wt. % of the polysaccharide is metered into a hydrophobic solvent which contains 0 to 25 wt. % of the polysaccharide at 40.degree. to 100.degree. C., exhibit improved absorptivity properties and particle size distribution.

Abstract: Polysaccharide graft polymers are prepared by semi-continuous reverse-phase suspension polymerization, partial dewatering and crosslinking, wherein during and after the suspension polymerization, in which an aqueous solution of an at least partially neutralized, olefinically unsaturated carboxylic acid is added to a suspension of a polysaccharide in a nonpolar organic solvent, the viscosity is reduced by adding amphoteric ammonium compounds or quaternary imidazolinium salts to the reaction medium.

Abstract: Finely divided polysaccharide graft polymers having a high absorption capacity for urine and water are prepared by semi-continuous reverse-phase suspension polymerization, in which an aqueous solution of an unsaturated carboxylic acid and an initiator is metered continuously into a suspension of a polysaccharide in an organic solvent and the polymer obtained is subsequently partial dehydrated and the crosslinked.

Abstract: The invention relates to a single-stage method of producing polysaccharide g FD-water/g polymers. Fine particulate graft polymers with very high water absorption capacity can be prepared by employing a nonionic lipophilic surface active agent and a nonionic hydrophilic surface active agent.