Modified superabsorbent polymer based on polyacrylonitrile emulsions
AssigneeBayer Aktiengesellschaft
InventorsSergej Schapowalov, Günter Sackmann, Rolf-Volker Meyer, Siegfried Korte
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Abstract
A process for modifying superabsorbent polymers is disclosed. The surface of a polymer containing hydrolyzed polyacrylonitrile in the form of particulates, is modified by crosslinking in a water/alcohol reaction mixture and in the presence of silica. The resulting product features improved absorbency under load and lesser degree of gel blocking.
Claims11
A process for modifying a superabsorbent polymer containing hydrolyzed polyacrylonitrile in the form of particulates comprising crosslinking of the surface of said superabsorbent polymer in a water/alcohol reaction mixture and in the presence of silica.
Dependencies are inferred from the claim text.