- 专利标题: Color-stable superabsorbent polymer composition
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申请号: US10547353申请日: 2004-03-19
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公开(公告)号: US20060089611A1公开(公告)日: 2006-04-27
- 发明人: Norbert Herfert , Michael Azad , Peter Carrico , Guy Woodrum , Michael Mitchell , Ma-Ikay Kikama
- 申请人: Norbert Herfert , Michael Azad , Peter Carrico , Guy Woodrum , Michael Mitchell , Ma-Ikay Kikama
- 国际申请: PCT/EP04/02874 WO 20040319
- 主分类号: A61F13/15
- IPC分类号: A61F13/15
摘要:
A color-stable superabsorbent polymer having long-term color stability, and methods of manufacturing the polymer, are disclosed. The superabsorbent polymer is prepared using a sulfinic acid derivative, like 2-hydroxy-2-sulfinatoacetic acid, a salt thereof, or a mixture thereof, as the reducing agent in a polymerization initiator system for the preparation of a superabsorbent polymer from monomers. The resulting superabsorbent polymer resists color degradation during periods of extended storage, even at an elevated temperature and humidity.
公开/授权文献
- US07504551B2 Color-stable superabsorbent polymer composition 公开/授权日:2009-03-17
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