发明公开
EP2984124A1 PARTICULATE SUPERABSORBENT POLYMER COMPOSITION HAVING IMPROVED STABILITY
审中-公开
颗粒状超吸收性聚合物组合物具有改进的稳定性
- 专利标题: PARTICULATE SUPERABSORBENT POLYMER COMPOSITION HAVING IMPROVED STABILITY
- 专利标题(中): 颗粒状超吸收性聚合物组合物具有改进的稳定性
-
申请号: EP14716810.8申请日: 2014-04-10
-
公开(公告)号: EP2984124A1公开(公告)日: 2016-02-17
- 发明人: TIAN, Gonglu , ONDISCO, Matthew T , BERGMAN JR, David L , MESSNER, Bernfried Andreas , SMITH, Scott
- 申请人: Evonik Corporation
- 申请人地址: 299 Jefferson Road Parsippany, NJ 07054 US
- 专利权人: Evonik Corporation
- 当前专利权人: Evonik Corporation
- 当前专利权人地址: 299 Jefferson Road Parsippany, NJ 07054 US
- 代理机构: Müller, Marion
- 优先权: US201313860019 20130410; US201414157769 20140117
- 国际公布: WO2014167040 20141016
- 主分类号: C08J3/12
- IPC分类号: C08J3/12 ; C08J3/24 ; A61L15/00 ; C08F220/06
摘要:
The present invention relates to a particulate superabsorbent polymer composition comprising a polymer comprising a neutralized aluminum salt solution applied to the surface of a particulate superabsorbent polymer; wherein an aqueous solution of the neutralized aluminum salt has a pH value from about 5.5 to about 8 and the particulate superabsorbent polymer composition has a mean particle size distribution of from 300 to 400 μm, an original Free Swell Gel Bed Permeability (FSGBP) of about 20×10−8 cm2 to about 200×10−8 cm2; and subsequent to subjecting the particulate superabsorbent polymer composition to the Processing Test, the particulate superabsorbent polymer composition has a permeability stability index of from about 0.60 to about 0.99 and having particles having a particle diameter of larger than 600 μm in an amount of less than about 15 wt % of the particulate superabsorbent polymer composition and as specified by standard sieve classification.
公开/授权文献
信息查询