Hydrophilic swellable graft polymers from maleic anhydride-alkyl

Details Hydrophilic swellable graft polymers from maleic anhydride-alkyl Hydrophilic swellable graft polymers from maleic anhydride-alkyl

1988-10-28

1990-06-05

Henderson, Christopher

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

Synthetic resins

Ethylenically unsaturated reactant admixed with either...

525 48, 604358, C08L 6706

Patent

active

049314971

ABSTRACT:
The present invention relates to hydrophilic swellable graft polymers which consist, in random distribution, to the extent of 0.5 to 20% by weight of radicals of the general formula I ##STR1## 79 to 99% by weight of radicals containing an acid group, of the general formula II ##STR2## and 0.1 to 2% by weight of crosslinking structures originating from monomers with at least two olefinically unsaturated double bonds, wherein the radicals R.sup.1 to R.sup.4 and n have the meanings given in claim 1, these graft polymers being used as absorbants for water and aqueous solutions.

REFERENCES:
patent: 2957843 (1960-10-01), Anderson
patent: 3990459 (1976-11-01), Papantoniou
patent: 4100127 (1978-07-01), Fukusaki
patent: 4275176 (1981-06-01), Login

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