Invention Grant
- Patent Title: Process for producing water-absorbing polymer particles with low caking tendency and high absorption under pressure
- Patent Title (中): 用于生产低粘结倾向和高压吸收聚合物颗粒的方法
-
Application No.: US13378442Application Date: 2010-06-24
-
Publication No.: US08410221B2Publication Date: 2013-04-02
- Inventor: Thomas Daniel , Christophe Bauduin , Norbert Herfert
- Applicant: Thomas Daniel , Christophe Bauduin , Norbert Herfert
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Marshall, Gerstein & Borun LLP
- Priority: EP09008370 20090626
- International Application: PCT/EP2010/058987 WO 20100624
- International Announcement: WO2010/149735 WO 20101229
- Main IPC: C08F8/42
- IPC: C08F8/42 ; C08F222/00 ; C08K3/34
Abstract:
A process for producing water-absorbing polymer particles with low caking tendency and high absorption under pressure, comprising polymerization of a monomer solution or suspension, drying of the resulting polymer gel, grinding, classifying, thermal surface postcrosslinking and coating with silicon dioxide, wherein the water-absorbing polymer particles have been coated, before, during or after the surface postcrosslinking with aluminum cations.
Public/Granted literature
Information query
IPC分类:
