Invention Grant
- Patent Title: Process for producing superabsorbents
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Application No.: US17046033Application Date: 2019-04-09
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Publication No.: US12083496B2Publication Date: 2024-09-10
- Inventor: Norbert Herfert , Bootsara Parchana , Sunantha Kaenthong , Stephan Bauer , Thomas Daniel , Katrin Baumann
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Element IP, PLC
- Priority: WO TCN2018083937 2018.04.20
- International Application: PCT/EP2019/058927 2019.04.09
- International Announcement: WO2019/201669A 2019.10.24
- Date entered country: 2020-10-08
- Main IPC: B01J20/26
- IPC: B01J20/26 ; B01J20/28 ; B01J20/30 ; C08F220/06
Abstract:
The invention relates to a process for producing long-term color stable superabsorbent polymer particles, comprising polymerization of a monomer solution, wherein the monomer solution comprises at least 0.01% by weight of 1-hydroxyethane-1,1-diphosphonic acid or a salt thereof and at least 0.01% by weight of 2-hydroxy-2-sulfonatoacetic acid or a salt thereof.
Public/Granted literature
- US20210121852A1 Process for Producing Superabsorbents Public/Granted day:2021-04-29
Information query
