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US 10,471,410 B2Granted
Method for preparing superabsorbent polymer with improved anti-caking
AssigneeLG Chem, Ltd.
InventorsSu-Jin Kim, Young Sam Kim, Bo-Hee Park, Young-In Yang
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Abstract
The present invention relates to a method for preparing superabsorbent polymer with improved anti-caking, and according to the present invention, a method for preparing superabsorbent polymer that has properties equivalent to or more excellent than the existing superabsorbent polymer but has improved anti-caking, and thus, has excellent processability, and superabsorbent polymer prepared thereby, are provided.
Claims19
A method for preparing superabsorbent polymer, comprising:
- introducing water, particles having a BET specific surface area of 500 to 1500 m2/g and a porosity of 50% or more, and one or more selected from the group consisting of multivalent metal salts, organic acid and polyhydric alcohol into a superabsorbent polymer to prepare a hydrated superabsorbent polymer;
- and
- aging the hydrated superabsorbent polymer.
Dependencies are inferred from the claim text.