US2012217326A1PendingUtilityA1

Separation of materials comprising super absorbent polymers using reduced water

48
Individually held — no corporate assignee on recordPriority: May 16, 2009Filed: May 2, 2012Published: Aug 30, 2012
Est. expiryMay 16, 2029(~2.8 yrs left)· nominal 20-yr term from priority
Inventors:David B. Grimes
B29B 17/02B29L 2031/4878Y02W30/52C08J 11/06C08J 2300/14B29K 2001/00Y02W30/62B29B 2017/0224
48
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Claims

Abstract

Embodiments of the present disclosure include a method for separating a material comprising a super absorbent polymer, a fiber and a plastic to separate the material into components thereof, one method comprising shredding the material, adding salt to the material, and agitating the material, wherein the material does not comprise a slurry.

Claims

exact text as granted — not AI-modified
1 . A method for separating the component parts of a material comprising a super absorbent polymer (SAP), a fiber component and a plastic component, the method comprising:
 shredding the material;   adding a salt to the material; and   agitating the material,   wherein the material is not a slurry or part of a slurry.   
     
     
         2 . The method of  claim 1 , further comprising:
 heating the material.   
     
     
         3 . The method of  claim 2 , wherein heating comprises heating with steam. 
     
     
         4 . The method of  claim 2 , further comprising:
 pressurizing the material; and   depressurizing the material.   
     
     
         5 . The method of  claim 4 , wherein the heating, pressurizing and agitating are performed in an autoclave. 
     
     
         6 . The method of  claim 1 , wherein the salt comprises aluminum sulfate. 
     
     
         7 . The method of  claim 1 , wherein the salt comprises a salt solution. 
     
     
         8 . The method of  claim 1 , wherein less than 10% water by weight of material is added to the material. 
     
     
         9 . The method of  claim 1 , wherein less 200 liters of water per ton of material is added to the material. 
     
     
         10 . The method of  claim 9 , wherein the material comprises substantially no free water. 
     
     
         11 . The method of  claim 1 , further comprising:
 using a dry process to separate the material into:
 a fiber and SAP component, and 
 a plastic component. 
   
     
     
         12 . A method for separating the component parts of a material comprising a super absorbent. polymer (SNP), a fiber component and a plastic component, the method comprising:
 heating the material; and   pressurizing the material,   wherein the material is not a slurry or part of a slurry.   
     
     
         13 . The method of  claim 12 , further comprising:
 shredding the material.   
     
     
         14 . The method of  claim 13 , further comprising:
 agitating the material.   
     
     
         15 . The method of  claim 14 , further comprising:
 depressurizing the material.   
     
     
         16 . The method of  claim 15 , wherein the heating, pressurizing, depressurizing and agitating are performed in an autoclave. 
     
     
         17 . The method of  claim 12 , further comprising:
 separating the material into:
 a fiber and SAP component, and 
 a plastic component.

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