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Method for the secondary crosslinking of hydrogels with bicyclic amide acetals

  • US 7,754,822 B2
  • Filed: 07/07/2004
  • Issued: 07/13/2010
  • Est. Priority Date: 07/28/2003
  • Status: Expired due to Fees
First Claim
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1. A process for postcrosslinking a water-absorbing polymer, which process comprises treating said polymer with a postcrosslinker and, during or after said treating, postcrosslinking and drying by temperature elevation, said postcrosslinker being a compound of a formula (I)

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