Invention Grant
- Patent Title: Water-absorbing polymer particles with high free swell rate and high permeability
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Application No.: US13763029Application Date: 2013-02-08
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Publication No.: US09738769B2Publication Date: 2017-08-22
- Inventor: Matthias Weismantel , Ulrich Riegel , Thomas Gieger , Markus Braun , Michael A. Mitchell
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Marshall, Gerstein & Borun LLP
- Main IPC: C08J9/14
- IPC: C08J9/14 ; C08G18/63 ; C08J9/18 ; C08J9/06 ; C08J9/16
Abstract:
A process for producing water-absorbing polymer particles with high free swell rate and high permeability by polymerization of an aqueous monomer solution or suspension to give an aqueous polymer gel, wherein a thermal blowing agent essentially free of inorganic acid anions is mixed into the polymer gel, and subsequent thermal drying of the polymer gel.
Public/Granted literature
- US20130210947A1 Water-Absorbing Polymer Particles with High Free Swell Rate and High Permeability Public/Granted day:2013-08-15
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