Superabsorbent polymers having delayed water absorption characteristics

Abstract

A superabsorbent polymer comprising a delayed absorption superabsorbent polymer having a free water absorbency property of absorbing less than about 3 grams of aqueous saline per gram of superabsorbent polymer in about 6 seconds, for a full particle size distribution of superabsorbent polymer ranging from about 40 micrometers to about 890 micrometers.

1 - 29 . (canceled)  
     
     
         30 . An absorbent article comprising a delayed absorption, particulate superabsorbent polymer having a free water absorption property of absorbing less than about 3 grams of water per gram of superabsorbent polymer in about 6 seconds, for a full particle size distribution ranging from about 40 micrometers to about 890 micrometers.  
     
     
         31 . The absorbent article of  claim 30 , wherein the superabsorbent polymer has a free water absorption property of absorbing less than about 7 grams of water per gram of superabsorbent polymer in about 15 seconds, for a full particle size distribution ranging from about 40 micrometers to about 890 micrometers.  
     
     
         32 . The absorbent article of  claim 30 , wherein the superabsorbent polymer has a centrifuge retaining capacity property of retaining more than 28 grams of aqueous saline per gram of superabsorbent polymer.  
     
     
         33 . The absorbent article of  claim 30 , wherein the superabsorbent polymer has an absorbency under load property at 0.9 psi (60 g/cm2) of retaining more than 13 grams of aqueous saline per gram of superabsorbent polymer.  
     
     
         34 . The absorbent article of  claim 30 , wherein the superabsorbent polymer is surface cross-linked.  
     
     
         35 . The absorbent article of  claim 30 , wherein the absorbent article is a sanitary article.  
     
     
         36 . The absorbent article of  claim 30 , wherein the absorbent article is a diaper.  
     
     
         37 . The absorbent article of  claim 30 , wherein the absorbent article is a incontinence garment.  
     
     
         38 . The absorbent article of  claim 30 , wherein the absorbent article is a water blocking tape.  
     
     
         39 . The absorbent article of  claim 30 , wherein the absorbent article is a sheet.  
     
     
         40 . The absorbent article of  claim 30 , wherein the absorbent article is a carrier for insecticides, pesticides or herbicides.  
     
     
         41 . A core composite in a sanitary article comprising a delayed absorption, particulate superabsorbent polymer having a free water absorption property of absorbing less than about 3 grams of water per gram of superabsorbent polymer in about 6 seconds, for a full particle size distribution ranging from about 40 micrometers to about 890 micrometers.