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US 12,006,405 B2Granted
Super absorbent polymer and method for producing same
AssigneeLG Chem, Ltd.
InventorsKyu Pal Kim, Gi Cheul Kim, Sung Soo Park
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Abstract
The present invention relates to a super absorbent polymer and a method for producing same. The super absorbent polymer can achieve a high deodorizing function while exhibiting excellent absorption properties. As such, by using the super absorbent polymer, adult diapers having a thin thickness and high deodorizing function can be provided.
Claims14
A super absorbent polymer comprising:
- a base resin powder including a cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups;
- a surface cross-linked layer that is further cross-linked from the cross-linked polymer and is formed on the base resin powder;
- and an inorganic material, wherein the super absorbent polymer has an ammonia removal efficiency of 92% to 98%, a centrifuge retention capacity (CRC) for a physiological saline solution of 32.9 to 35.8 g/g, and an absorbency under load (AUL) under 0.9 psi for a physiological saline solution of 21.1 to 23.4 g/g,
- wherein the inorganic material is laponite,
- wherein the superabsorbent polymer has a pH of 5.40 to 5.67, and
- wherein the inorganic material is present in an amount of 0.1 to 1.0 parts by weight with respect to 100 parts by weight of the base resin powder.
3 more elements
Dependencies are inferred from the claim text.