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Superabsorbent polymers having anti-caking characteristics

  • US 6,124,391 A
  • Filed: 08/18/1998
  • Issued: 09/26/2000
  • Est. Priority Date: 08/18/1998
  • Status: Expired due to Term
First Claim
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1. A particulate material composition comprising an inorganic powder intermixed with particles of superabsorbent polymer, said polymer particles being of such size that less than about 60% of said polymer particles, by weight, will pass through a U.S. Standard 50 mesh sieve with 300 micrometer openings, and wherein the composition exhibits anti-caking characteristics in that more than about 90% of the composition particles, by weight, will pass through a U.S. Standard 12 mesh sieve with 1700 micrometer openings after at least about 3 hours at about 36±



  • C. and about 77±

    3% relative humidity.

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