Process for producing an absorbent polymer by means of spread-drying

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United States of America Patent

PATENT NO 7728045
APP PUB NO 20080021150A1
SERIAL NO

11578918

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Abstract

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The process according to the invention for production of an absorbent polymer comprising the following process steps: i) polymerization of an aqueous monomer solution to obtain a polymer gel; ii) comminution of the polymer gel to obtain a gel granulate; and iii) drying of the gel granulate, and is characterized in that the gel granulate after step ii) has a spread behavior. The production process of an absorbent polymer distinguishes itself by a particularly efficient drying step iii), which enables a particularly gentle and uniform drying of the gel granulate. The obtained absorbent polymers and products and items produced therefrom have a particularly uniform product quality and constant physical-chemical properties.

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Patent Owner(s)

Patent OwnerAddress
EVONIK SUPERABSORBER GMBHRELLINGHAUSER STRASSE 1-11 ESSEN 45128

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Becker, Volker Dinslaken, DE 31 402
Grupe, Heinz-Peter Krefeld, DE 3 18
Jung, Detlef Tönlsvorst, DE 5 31
Reimann, Armin Willich, DE 9 184

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