Super absorbent polymer and preparation method thereof

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United States of America Patent

PATENT NO 9808787
APP PUB NO 20170021334A1
SERIAL NO

15286764

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Abstract

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The present invention relates to a super absorbent polymer and a preparation method thereof. The super absorbent polymer includes surface crosslinked polymer particles prepared by surface crosslinking of particles of a base resin, wherein the base resin is polymerized from a monomer composition including water-soluble ethylene-based unsaturated monomers, and a water-soluble component, wherein the water-soluble component has a ratio (dwt/d(log M)) of 0.9 or less over molecular weights (M) ranging from 100,000 to 300,000 when measured from an eluted solution after swelling the super absorbent polymer for 1 hour, and wherein the content of the water-soluble component is 5% by weight or less, based on the total weight of the super absorbent polymer, when measured after swelling the super absorbent polymer for 1 hour. The super absorbent polymer has excellent liquid permeability even when swollen without a reduction in centrifuge retention capacity or absorbency under load while having improved permeability.

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Patent Owner(s)

Patent OwnerAddress
LG CHEM LTDSEOUL SOUTH KEREAN SEOUL

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lee, Hyemin Daejeon, KR 51 131
Ryu, Chul Hee Daejeon, KR 13 104

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