Invention Grant
- Patent Title: Process for preparing color-stable water-absorbing polymer particles with a low degree of neutralization
- Patent Title (中): 具有低中和度的颜色稳定的吸水性聚合物颗粒的制备方法
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Application No.: US12438217Application Date: 2007-09-17
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Publication No.: US07960490B2Publication Date: 2011-06-14
- Inventor: Rüdiger Funk , Volker Braig
- Applicant: Rüdiger Funk , Volker Braig
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Marshall, Gerstein & Borun LLP
- Priority: EP06120881 20060919
- International Application: PCT/EP2007/059759 WO 20070917
- International Announcement: WO2008/034786 WO 20080327
- Main IPC: C08F20/06
- IPC: C08F20/06
Abstract:
The present invention relates to a process for producing water-absorbing polymeric particles by polymerizing a monomer solution comprising at least one ethylenically unsaturated acid-functional monomer less than 55 mol % neutralized and drying the resulting polymeric gel by means of a heated gas stream in at least two temperature zones.
Public/Granted literature
- US20100001233A1 Process for Preparing Color-Stable Water-Absorbing Polymer Particles with a Low Degree of Neutralization Public/Granted day:2010-01-07
Information query
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