Invention Grant
US08481159B2 Water-absorbent porous polymer particles having specific sphericity and high bulk density
有权
具有特定球形度和高堆积密度的吸水多孔聚合物颗粒
- Patent Title: Water-absorbent porous polymer particles having specific sphericity and high bulk density
- Patent Title (中): 具有特定球形度和高堆积密度的吸水多孔聚合物颗粒
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Application No.: US12868453Application Date: 2010-08-25
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Publication No.: US08481159B2Publication Date: 2013-07-09
- Inventor: Rainer Dobrawa , Thomas Daniel , Uwe Stueven , Marco Krüger , Francisco Javier Lopez Villanueva , Norbert Herfert , Karin Flore , Stefan Blei , Michael A. Mitchell
- Applicant: Rainer Dobrawa , Thomas Daniel , Uwe Stueven , Marco Krüger , Francisco Javier Lopez Villanueva , Norbert Herfert , Karin Flore , Stefan Blei , Michael A. Mitchell
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Marshall, Gerstein & Borun LLP
- Main IPC: B32B5/18
- IPC: B32B5/18 ; B29C67/20 ; B29C67/24
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
- US20110059329A1 Water-Absorbent Polymer Particles Public/Granted day:2011-03-10
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