Invention Grant
- Patent Title: Water-absorbent polymer particles
- Patent Title (中): 吸水性聚合物颗粒
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Application No.: US13870599Application Date: 2013-04-25
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Publication No.: US09073040B2Publication Date: 2015-07-07
- Inventor: Rainer Dobrawa , Thomas Daniel , Uwe Stueven , Marco Krüger , Francisco Javier Lopez Villanueva , Norbert Herfert , Karin Flore , Stefan Blei , 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: B32B5/16
- IPC: B32B5/16 ; C08L31/02 ; C08L33/04 ; B01J20/26 ; A61L15/60 ; C08F2/10 ; C08F220/06 ; B01J20/30 ; C08F222/10
Abstract:
The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase and flowing the gas cocurrent through the polymerization chamber, wherein the temperature of the gas leaving the polymerization chamber is 130° C. or less, the gas velocity inside the polymerization chamber is at least 0.5 m/s, and the droplets are generated by using a droplet plate having a multitude of bores.
Public/Granted literature
- US20130281594A1 WATER-ABSORBENT POLYMER PARTICLES Public/Granted day:2013-10-24
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