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Superabsorbent polymers providing long-term generation of free volume in partially hydrated absorbent cores

  • US 20040215160A1
  • Filed: 01/20/2004
  • Published: 10/28/2004
  • Est. Priority Date: 04/10/2001
  • Status: Abandoned Application
First Claim
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1. A method for preparing an absorbent composition comprising:

  • providing a first layer of wettable fibers;

    distributing on the first layer of wettable fibers a layer of surface crosslinked polymer having a FVAUL value of at least about 60 cc after 10 minutes;

    providing a second layer of wettable fibers on top of the layer of surface crosslinked polymer; and

    calendaring said layers to form the wettable fibers into a fibrous matrix having the surface crosslinked polymer disbursed therein, said surface crosslinked polymer comprising about 70% by weight to about 95% by weight the absorbent composition and said wettable fibers comprising about 5% by weight to about 30% by weight of the absorbent composition.

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