Production of water-absorbing polymeric particles by dropletization polymerization in the gas phase
AssigneeBASF SE
InventorsStefan Bruhns, Volker Frenz, Dennis Lösch, Volker Seidl, Uwe Stueven, Carolin Nadine Dücker, Matthias Weismantel, Wilfried Heide, Stefan Blei
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Abstract
A process for producing water-absorbing polymeric particles by dropletization polymerization in the gas phase, which comprises drying the polymeric particles after the polymerization in a fluidized bed, the water-absorbing polymeric particles themselves, hygiene articles comprising these water-absorbing polymeric particles and also apparatus for implementing the process.
Claims20
A process for producing water-absorbing polymeric particles by dropletization polymerization in a gas phase, wherein a monomer solution is dropletized at a speed of less than 0.2 m/s, which comprises the polymeric particles after the polymerization being dried and optionally agglomerated and/or postcrosslinked, the drying being carried out in a fluidized bed.
Apparatus for producing water-absorbing polymeric particles by a dropletization polymerization comprising an apparatus for generating droplets at a speed of less than 0.2 m/s in which the polymeric particles after the polymerization are dried and optionally agglomerated and/or postcrosslinked, wherein the apparatus for drying is a fluidized bed apparatus.
Dependencies are inferred from the claim text.