Invention Grant
- Patent Title: Method for belching water from swollen superabsorbent polymers and method for recycling sanitary absorbent articles using the same
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Application No.: US14443246Application Date: 2013-11-15
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Publication No.: US09650488B2Publication Date: 2017-05-16
- Inventor: Jik Hwan Park , Jea Seung Chin , Ho Sun Lee , Won Young Lee
- Applicant: KIMBERLY-CLARK WORLDWIDE, INC. , YUHAN-KIMBERLY, LIMITED
- Applicant Address: US WI Neenah
- Assignee: Kimberly-Clark Worldwide, Inc.
- Current Assignee: Kimberly-Clark Worldwide, Inc.
- Current Assignee Address: US WI Neenah
- Agency: Kimberly-Clark Worldwide, Inc.
- Priority: KR10-2012-0130094 20121116
- International Application: PCT/KR2013/010400 WO 20131115
- International Announcement: WO2014/077619 WO 20140522
- Main IPC: C08J9/00
- IPC: C08J9/00 ; C08J11/06 ; B09B3/00 ; C08J9/12 ; A61F13/15 ; A61F13/53

Abstract:
The present invention relates to a method for removing water from swollen superabsorbent polymers in a gel state, and a method for recycling sanitary absorbent articles using the same. According to the method of the present invention, water is removed from swollen superabsorbent polymers by immersing swollen superabsorbent polymers in a gel state into a composition wherein sea water that is readily available and calcium chloride that is readily available at low cost are mixed for a specified period of time. The method makes it possible to easily and economically remove water from swollen SAPs in a gel state. Thus, the method provides an economical and environmentally-friendly means for recycling sanitary absorbent articles comprising an absorbent that consists of SAP and cellulose pulp, after being used for absorbing human waste.
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