公开(公告)号：US20130200305A1

公开(公告)日：2013-08-08

申请号：US13759147

申请日：2013-02-05

Applicant: BASF SE

Inventor： Karin Flore ,  Thomas Daniel ,  Agnes Voitl ,  Gabriele Iffland

IPC: B01J20/30

CPC classification number: B01J20/30 ,  B01J20/267 ,  C08F220/06 ,  C08F222/1006

Abstract: A process for producing water-absorbing polymer particles by polymerizing an aqueous monomer solution or suspension comprising at least one ethylenically unsaturated monomer which bears acid groups and has been at least partly neutralized by addition of a neutralizing agent, wherein the neutralizing agent is filtered prior to the addition.

Abstract translation: 通过聚合包含至少一种具有酸性基团并至少部分通过加入中和剂中和的烯属不饱和单体的含水单体溶液或悬浮液来生产吸水聚合物颗粒的方法，其中中和剂在 添加。

公开(公告)号：US09073040B2

公开(公告)日：2015-07-07

申请号：US13870599

申请日：2013-04-25

Applicant: BASF SE

Inventor： Rainer Dobrawa ,  Thomas Daniel ,  Uwe Stueven ,  Marco Krüger ,  Francisco Javier Lopez Villanueva ,  Norbert Herfert ,  Karin Flore ,  Stefan Blei ,  Michael A. Mitchell

IPC: B32B5/16 ,  C08L31/02 ,  C08L33/04 ,  B01J20/26 ,  A61L15/60 ,  C08F2/10 ,  C08F220/06 ,  B01J20/30 ,  C08F222/10

CPC classification number: B01J20/26 ,  A61L15/60 ,  B01J20/264 ,  B01J20/3085 ,  C08F2/10 ,  C08F220/06 ,  C08F222/1006 ,  Y10T428/249958 ,  Y10T428/249981 ,  Y10T428/254 ,  Y10T428/2982 ,  Y10T428/31935

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.

Abstract translation: 本发明涉及一种通过在周围加热气相中聚合单体溶液的液滴并使气体并流通过聚合室流过气体聚合物颗粒的方法，其中离开聚合室的气体的温度为130℃ 聚合室内的气体速度为至少0.5m / s，通过使用具有多个孔的液滴板产生液滴。