Invention Grant
US08703876B2 Process for producing water absorbing polymer particles with improved color stability
有权
用于生产具有改善的颜色稳定性的吸水聚合物颗粒的方法
- Patent Title: Process for producing water absorbing polymer particles with improved color stability
- Patent Title (中): 用于生产具有改善的颜色稳定性的吸水聚合物颗粒的方法
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Application No.: US13041033Application Date: 2011-03-04
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Publication No.: US08703876B2Publication Date: 2014-04-22
- Inventor: Norbert Herfert , Thomas Daniel , Bootsara Parchana
- Applicant: Norbert Herfert , Thomas Daniel , Bootsara Parchana
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Marshall, Gerstein & Borun LLP
- Priority: EP10156480 20100315
- Main IPC: C08F8/40
- IPC: C08F8/40 ; C08F4/40 ; C08F20/18
Abstract:
A process for producing water-absorbing polymer particles, wherein at least one inorganic phosphoric acid and/or salt thereof and at least one organic 2-hydroxy acid and/or salt thereof is added, where the phosphorus in the inorganic phosphoric acid has an oxidation number of less than +V and the organic 2-hydroxy acid does not have any ethylenically unsaturated groups, and also the water-absorbing polymer particles obtainable by the process according to the invention.
Public/Granted literature
- US20110224381A1 Process for Producing Water Absorbing Polymer Particles with Improved Color stability Public/Granted day:2011-09-15
Information query
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