Hydrophilic, swellable graft copolymers, their preparation and u

Details Hydrophilic, swellable graft copolymers, their preparation and u Hydrophilic, swellable graft copolymers, their preparation and u

1990-03-19

1991-08-20

Short, Patricia

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ethylenically unsaturated reactant admixed with either...

525 42, 525404, 525445, C08F28302, C08F28306

Patent

active

050414968

ABSTRACT:
The present invention relates to hydrophilic, swellable graft copolymers composed, in random distribution, of 0.5 to 20% by weight of radicals of the general formula I ##STR1## of 79 to 99% by weight of radicals containing an acidic group, of the general formula II ##STR2## and of 0.1 to 2% by weight of radicals of a crosslinking agent which are derived from monomers having at least two olefinically unsaturated double bonds, and the radicals X, Z, m, n, z and also R.sup.1 to R.sup.4 are defined as given in the description, a process for the preparation of these graft copolymers and also their use as absorbents for water and aqueous solutions.

REFERENCES:
patent: 3900378 (1975-08-01), Yen
patent: 4931497 (1990-06-01), Engelhardt

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