Title:
PARTICULATE SUPERABSORBENT POLYMER COMPOSITION HAVING IMPROVED STABILITY
Document Type and Number:
Japanese Patent JP2019031691
Kind Code:
A
Abstract:
To provide a particulate superabsorbent polymer composition which is endurable against processes of production and working an absorbent product without greatly reducing characteristics.SOLUTION: A particulate superabsorbent polymer composition contains a polymer containing a neutralized aluminum salt solution applied onto a surface of a particulate superabsorbent polymer, where an aqueous solution of the neutralized aluminum salt has a pH value of approximately 5.5 to approximately 8; the particulate superabsorbent polymer composition has average particle size distribution of 300-400 μm and initial free swollen gel bed permeability (FSGBP) of approximately 20×10cmto approximately 200×10cm; the particulate superabsorbent polymer composition after the particulate superabsorbent polymer composition has been subjected to a treatment test has a permeability stability index of approximately 0.60 to approximately 0.99, and has less than approximately 15 wt.% of particles having a particle size specified by standard sieve classification of more than 600 μm based on the particulate superabsorbent polymer composition.SELECTED DRAWING: None
Inventors:
TIAN GONGLU
MATTHEW T ONDISCO
DAVID L BERGMAN JR
BERNFRIED ANDREAS MESSNER
SMITH SCOTT
MATTHEW T ONDISCO
DAVID L BERGMAN JR
BERNFRIED ANDREAS MESSNER
SMITH SCOTT
Application Number:
JP2018205238A
Publication Date:
February 28, 2019
Filing Date:
October 31, 2018
Export Citation:
Assignee:
EVONIK CORP
International Classes:
C08J3/24; B01J20/26; B01J20/30
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Naori Kota
Satoshi Deno
Masatoshi Takahashi
Shunsuke Mima
Shinji Mitsuhashi
Naori Kota
Satoshi Deno
Masatoshi Takahashi
Shunsuke Mima