Stephan Bauer,Yvonne Hagen,Katrin Baumann,Christophe Bauduin,Thomas Daniel,Thomas Pfeiffer
申请号：
US15552849
公开号：
US20180043052A1
申请日:
2016.01.26
申请国别(地区):
US
年份:
2018
代理人:
摘要：
The present invention relates to a process for producing surface-postcrosslinked water-absorbent polymer particles comprising polymerizing droplets of a monomer solution, wherein water-absorbent polymer particles having an average particle diameter from 420 to 700 μm, an amount of water-absorbent polymer particles having a particle size of less than 300 μm of less than 5% by weight and an amount of water-absorbent polymer particles having a particle size of more than 800 μm of less than 5% by weight are coated with at least one surface-postcrosslinker and thermal surface-postcrosslinked.
