| abstract |
An improved process for producing a water-absorbing / water-insoluble polymer. A method for producing a water-absorbing / water-insoluble polymer comprising continuously polymerizing monomers in a reactor system comprising at least three zones, wherein the first zone comprises monomers, An initiator zone and water are continuously fed under conditions such that monomer polymerization is initiated, the second zone is the gel phase zone, and the third zone is granulated. Zone, the reactor system has at least two axes of rotation in the second and third zones, the highest temperature in the second and third zones is 50-100 ° C, and the first Wherein at least a portion of the water supplied to the zone is optionally in the form of steam. [Selection] Figure 1 |