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US 2026/0233196 A1Published application
Super Absorbent Polymer
AssigneeLG Chem, Ltd.
InventorsHeeChang WOO, Sung Soo Park, Junwye Lee
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Abstract
The present disclosure herein relates to a super absorbent polymer, and more particularly, to a super absorbent polymer exhibiting excellent absorption behavior with respect to water having a low ion concentration and a low electrical conductivity, and particularly, having quick initial absorption speed, and a large maximum absorption capacity.
Claims6
A super absorbent polymer, which is a polyacrylic acid (salt)-based super absorbent polymer,
- wherein the super absorbent polymer has a centrifuge retention capacity (CRC) of 35 g/g or more as measured according to the method of EDANA WSP 241.3, and wherein the super absorbent polymer has a Se/r value of 3.0 g/g/sec or more according to Equation 1 below:
- S
- t
- =
- S
- e
- ×
- (
- 1
- -
- e
- -
- t
- /
- r
- )
- [
- Equation
-
- 1
- ]
- wherein in Equation 1 above, t represents swelling time (s), St represents the free-swelling capacity (g/g) of the super absorbent polymer in water having an electrical conductivity of 100 μS/cm to 130 μS/cm at the swelling time (s) t, and Se and r are constants, and
- wherein the Se value is 310 g/g or more and the r value is 110 seconds or less.
20 more elements
Dependencies are inferred from the claim text.