Method for the production of superabsorbers

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United States of America Patent

PATENT NO 12110351
APP PUB NO 20220235152A1
SERIAL NO

17717598

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Abstract

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A process for producing superabsorbents, comprising polymerization of a monomer solution and thermal surface postcrosslinking, wherein the monomer solution comprises at least 0.75% by weight of a hydroxyphosphonic acid or salts thereof, calculated on the basis of the total amount of monomer used, and at least 0.09% by weight of aluminum cations, calculated on the basis of the total amount of polymer particles used, is added to the polymer particles before, during or after the thermal surface postcrosslinking.

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Patent Owner(s)

Patent OwnerAddress
BASF SECARL-BOSCH-STRASSE 38 67056 LUDWIGSHAFEN AM RHEIN GERMANY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Daniel, Thomas Ludwigshafen, DE 192 4772
Gieger, Thomas Ludwigshafen, DE 10 34
Greene, Nathaniel Troy Charlotte, US 3 2
Hartnagel, Kristine Ludwigshafen, DE 8 15
Morano, Michelle Charlotte, US 4 11
Schroeder, Marcus Ludwigshafen, DE 2 2

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