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 400μm, an original Free Swell Gel Bed Permeability (FSGBP) of about 20x10-8 cm2 to about 200 x10-8 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 600μm in an amount of less than about 15wt% of the particulate superabsorbent polymer composition and as specified by standard sieve classification.本發明係關於包含聚合物之微粒超吸收性聚合物組成物，該聚合物包含塗覆至微粒超吸收性聚合物表面的中和鋁鹽溶液；其中該中和鋁鹽之水溶液具有約5.5至約8之pH值，且該微粒超吸收性聚合物組成物具有300μm至400μm之平均粒徑分佈、約20×10-8cm2至約200×10-8cm2的原始自由膨脹凝膠床滲透性(FSGBP)；且對該微粒超吸收性聚合物組成物進行處理測試之後，該微粒超吸收性聚合物組成物具有約0.60至約0.99之滲透性穩定指數；且具有顆粒直徑大於600μm、含量為微粒超吸收性聚合物組成物之小於約15wt%的顆粒，如依據標準篩分級所說明。
