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US 2026/0021470 A1Published application
Composition of Super Absorbent Polymer and Preparation Method Thereof
AssigneeLG Chem, Ltd.
InventorsJi Hong Min, Jun Kyu Kim
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Abstract
The present disclosure relates to a composition of super absorbent polymer and a preparation method thereof, and more specifically, a composition of super absorbent polymer and a preparation method thereof, that may improve deodorization capacity and odor masking capacity by using specific additives in combination, to effectively inhibit odor generated from urine, and the like, when applied to a product such as a diaper, and the like, and bacteria growth during wearing of a product.
Claims11
A composition of super absorbent polymer comprising:
- a super absorbent polymer comprising
- a base resin including a crosslinked polymer formed by crosslinking polymerization of acrylic acid-based monomers having at least partially neutralized acid groups and an internal crosslinking agent, and
- a surface crosslink layer formed on a surface of the base resin, wherein
- the crosslinked polymer is further crosslinked by a surface crosslinking agent;
- an amino acetate-based chelating agent;
- and
- cysteine,
- wherein the amino acetate-based chelating agent and the cysteine are each independently included inside the surface crosslink layer or on a surface of the surface crosslink layer.
5 more elements
A method for preparing a composition for a super absorbent polymer, comprising:
- subjecting acrylic acid-based monomers having at least partially neutralized acid groups to crosslinking polymerization, in the presence of an internal crosslinking agent and a polymerization initiator, to form a hydrogel polymer;
- preparing a base resin comprising a crosslinked polymer obtained by drying and grinding the hydrogel polymer;
- mixing a surface crosslinking composition with the base resin to prepare a mixture;
- and
- heat treating the mixture to prepare the super absorbent polymer, wherein a surface crosslink layer is formed on a surface of the base resin,
- wherein an amino acetate-based chelating agent and cysteine are each independently mixed in at least one steps of the preparing the base resin, the mixing the surface crosslinking composition with the base resin, or the heat treating the mixture or steps before or after these steps.
3 more elements
Dependencies are inferred from the claim text.