Hydrophilic water swellable graft copolymers

European Patent Office Patent

PATENT NO 0545126
APP PUB NO EP-0545126-A2
SERIAL NO

92119513

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The invention relates to hydrophilic, swellable graft polymers which comprise, in a random distribution, from 0.5 to 50% by weight of radicals of the formula I and radicals of the general formula II from 49 to 99% by weight of acid group-containing radicals of the general formula III and from 0.1 to 2% by weight of radicals of a crosslinking agent which are derived from monomers containing at least two olefinically unsaturated double bonds, where the radicals R<1> to R<4>, X and Y and n and m are defined as indicated in claim 1, to their preparation, and to their use as absorbents for water and aqueous solutions.

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