16-02-2017 дата публикации
Номер: US20170043319A1
Принадлежит:
LG CHEM, LTD.
Disclosed herein are a superabsorbent polymer resin incorporated with a particles meeting the following properties i) to ii): i) a BET specific surface area of 300 to 1500 m/g, ii) a porosity of 50% or more, and a method for preparing the same. 1. A superabsorbent polymer resin , meeting both the conditions represented by the following Mathematical Formulas 1 and 2:{'br': None, 'i': RA', 'D', 'D, 'sub': am', 'bm, '1=(850 μm+)/(850 μm+)≧0.2\u2003\u2003[Math Formula 1]'}{'br': None, 'i': RA', 'D', 'D, 'sub': am', 'bm, '2=(600 μm+)/(600 μm+)≧0.65\u2003\u2003[Math Formula 2]'}{'sub': am', 'bm, '(wherein, D(x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater after milling and D(x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater before milling.)'}2. The superabsorbent polymer resin of claim 1 , further meeting the condition represented by the following Mathematical Formula 3:{'br': None, 'i': D', 'D, 'sub': bm', 'bm, 'RA3=[(850 μm+)/(150˜850 μm)]*100≦4.0\u2003\u2003[Math Formula 3]'}{'sub': bm', 'bm, '(wherein, D(x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater before milling, and D(y˜z μm) is a proportion of superabsorbent polymer resins having a particle size of from y μm to z μm before milling.)'}3. The superabsorbent polymer resin of claim 1 , further meeting the condition represented by the following Mathematical Formula 4:{'br': None, 'i': D', 'D, 'sub': bm', 'bm, 'RA4=[(850 μm+)/(300˜850 μm)]*100≦4.5\u2003\u2003[Math Formula 4]'}{'sub': bm', 'bm, '(wherein, D(x μm+) is a proportion of superabsorbent polymer resins having a particle size of x μm or greater before milling, and D(y˜z μm) is a proportion of superabsorbent polymer resins having a particle size of from y μm to z μm before milling.)'}4. The superabsorbent polymer resin of claim 1 , wherein the superabsorbent polymer resin is incorporated with a particle meeting the ...
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