Method for the production of superabsorbents

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United States of America

PATENT NO 12239947
APP PUB NO 20210154637A1
SERIAL NO

17264093

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Abstract

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A process for producing superabsorbent particles by polymerizing a monomer solution, comprising the steps of continuously polymerizing the monomer solution on the continuous belt of a belt reactor, comminuting the polymer gel obtained, rinsing the polymer gel obtained on the underside of the belt reactor into a separation unit with water, separating the polymer gel from the water in the separation unit and recycling the polymer gel into the comminution, wherein the polymer gel has a swelling capacity in water of at least 100 g/g, the dwell time of the polymer gel in the rinse water is less than 40 minutes, and the separation unit has openings with a clear width of at least 1 mm.

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Patent Owner(s)

  • BASF SE

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Funk, Ruediger Ludwigshafen, DE 13 2
Krueger, Marco Ludwigshafen, DE 9 3
Pfeiffer, Thomas Ludwigshafen, DE 188 1377
Possemiers, Karl Antwerp, BE 15 8
Schroeder, Juergen Ludwigshafen, DE 49 449
Weismantel, Matthias Ludwigshafen, DE 135 2701

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