Hydrophilic, swellable graft copolymers, their preparation...

Details Hydrophilic, swellable graft copolymers, their preparation... Hydrophilic, swellable graft copolymers, their preparation...

C - Chemistry, Metallurgy

08

G

2/112, 400/2014,

C08G 63/91 (2006.01) A61F 13/15 (2006.01) A61L 15/60 (2006.01) C08F 283/06 (2006.01)

Patent

CA 2013441

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 (see formula I) of 79 to 99 % by weight of radicals containing an acidic group, of the general formula II (see formula II) 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 R1 to R4 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.

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