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US 2008/0287631 A1Published application
Process for Preparing Water-Absorbing Polymer Particles
AssigneeBASF SE
InventorMeinhard Nitschke
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Abstract
A process for producing water-absorbing polymeric particles comprises the steps of i) drying a hydrogel to produce a dried hydrogel, ii) separating incompletely dried polymeric particles from the dried hydrogel, and iii) drying the separated-off incompletely dried polymeric particles, wherein the separated incompletely dried polymeric particles are comminuted before said drying iii).
Claims21
A process for producing water-absorbing polymeric particles comprising the steps of
- i) drying a hydrogel to produce a dried hydrogel,
- ii) separating incompletely dried polymeric particles from the dried hydrogel, and
- iii) drying the separated incompletely dried polymeric particles,
- wherein the separated incompletely dried polymeric particles are comminuted before said drying iii).
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(canceled)
Dependencies are inferred from the claim text.