Invention Grant
US09302248B2 Particulate superabsorbent polymer composition having improved stability
有权
具有改进的稳定性的颗粒状超吸收性聚合物组合物
- Patent Title: Particulate superabsorbent polymer composition having improved stability
- Patent Title (中): 具有改进的稳定性的颗粒状超吸收性聚合物组合物
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Application No.: US13860019Application Date: 2013-04-10
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Publication No.: US09302248B2Publication Date: 2016-04-05
- Inventor: Gonglu Tian , Matthew Thomas Ondisco , David L. Bergman , Bernfried Messner , Scott J. Smith
- Applicant: EVONIK CORPORATION
- Applicant Address: US NJ Parsippany
- Assignee: Evonik Corporation
- Current Assignee: Evonik Corporation
- Current Assignee Address: US NJ Parsippany
- Agency: Smith Moore Leatherwood LLP
- Agent Philip P. McCann; John P. Zimmer
- Main IPC: B01J20/32
- IPC: B01J20/32 ; B01J20/26 ; C08J3/12 ; C08J3/24 ; C08F220/06 ; A61L15/18 ; A61L15/60

Abstract:
The present invention relates to a particulate superabsorbent polymer composition having improved stability comprising a polymer comprising from about 0.01 wt % to about 5 wt % of 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 an original Free Swell Gel Bed Permeability (FSGBP) of about 20×10−8 cm2 to about 200×10−8 cm2 and a compressibility of from about 1.30 mm2/N to about 4 mm2/N prior to subjecting the particulate superabsorbent polymer composition to a Processing Test; 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.
Public/Granted literature
- US20140306155A1 PARTICULATE SUPERABSORBENT POLYMER COMPOSITION HAVING IMPROVED STABILITY Public/Granted day:2014-10-16
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