Invention Grant
- Patent Title: Water absorbent polymer particles formed by polymerizing droplets of a monomer solution and coated with sulfinic acid, sulfonic acid, and/or salts thereof
- Patent Title (中): 通过聚合单体溶液的液滴并涂覆有亚磺酸，磺酸和/或其盐形成的吸水性聚合物颗粒
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Application No.: US13043816Application Date: 2011-03-09
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Publication No.: US08852742B2Publication Date: 2014-10-07
- Inventor: Norbert Herfert , Thomas Daniel , Rainer Dobrawa
- Applicant: Norbert Herfert , Thomas Daniel , Rainer Dobrawa
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Marshall, Gerstein & Borun LLP
- Main IPC: B29C44/00
- IPC: B29C44/00 ; B32B5/16 ; C08K5/36 ; C08K7/22 ; B01J2/16 ; B01J2/04 ; C08J7/04 ; B23B5/16 ; B32B5/02 ; C08F220/06 ; A61F13/53 ; 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, which comprises coating the water-absorbing polymer particles with at least one sulfinic acid, sulfonic acid and/or salts thereof.
Public/Granted literature
- US20110223413A1 Process for Producing Water Absorbent Polymer Particles by Polymerizing Droplets of a Monomer Solution Public/Granted day:2011-09-15
Information query
