Method for Producing Water-Absorbing Polymer Particles with High Swelling Rate and High Centrifuge Retention Capacity with Simultaneously High Permeability of the Swollen Gel Bed

A process for producing water-absorbing polymer particles having high free swell rate and high centrifuge retention capacity with simultaneously high permeability of the swollen gel bed by polymerization of an aqueous monomer solution in a polymerization reactor having at least two shafts (kneaders)...

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Bibliographic Details
Main Authors KRAUSS ROLAND, HAAG MONICA, KLOCK VOLKER, GIEGER THOMAS, WEISMANTEL MATTHIAS
Format Patent
LanguageEnglish
Published 31.12.2015
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:A process for producing water-absorbing polymer particles having high free swell rate and high centrifuge retention capacity with simultaneously high permeability of the swollen gel bed by polymerization of an aqueous monomer solution in a polymerization reactor having at least two shafts (kneaders) which rotate in an axially parallel manner, subsequent extrusion at high temperatures and thermal surface postcrosslinking.
Bibliography:Application Number: US201414763185