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US 12,616,956 B2Granted
Super absorbent polymer based on polyacrylic acid or its salts
AssigneeLG Chem, Ltd.
InventorsTaewan Kim, Seokhyeon Baek, Sung Soo Park, Kwangin Shin, Kyung Inn Kim, Jung Eun Song, Minhwa Shin
Life of this patent
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Abstract
A super absorbent polymer may have a capillary constant of 0.4 mm5 or more as derived using n-hexane. The super absorbent polymer may be a polyacrylic acid (salt)-based super absorbent polymer. The super absorbent polymer may have a fast absorption rate and an improved absorption capacity, resulting in improved performance.
Claims11
A polyacrylic acid (salt)-based super absorbent polymer,
- wherein the polyacrylic acid (salt)-based super absorbent polymer has a capillary constant of 0.4 mm5 or more as derived using n-hexane, and
- wherein when the polyacrylic acid (salt)-based super absorbent polymer is swelled in water having an electrical conductivity value of 100 to 130 μS/cm for 1 minute, a maximum capacity of water that the polyacrylic acid (salt)-based super absorbent polymer is able to hold (free swelling capacity) is 130 g/g or more.
Dependencies are inferred from the claim text.