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US 10,307,731 B2Granted
Attrition-resistant superabsorbent polymer and method for producing same
AssigneeLG Chem, Ltd.
InventorsYoung-In Yang, Young-Sam Kim, Kyoung-Shil Oh, Bo-Hee Park, Su-Jin Kim
Life of this patent
Estimating the term…
Abstract
Disclosed is an attrition-resistant superabsorbent polymer, including a superabsorbent polymer, porous superhydrophobic microparticles, and water, thus increasing moisture content of the superabsorbent polymer and a method of manufacturing the attrition-resistant superabsorbent polymer is also provided.
Claims37
An attrition-resistant hydrous superabsorbent polymer, comprising:
- a superabsorbent polymer (A), particles (B) having i) a BET specific surface area of 300-1500 m2/g and ii) a porosity of 50% or more, and water (C),
- wherein the particles (B) are contained in an amount of 0.0001-15 parts by weight based on 100 parts by weight of the superabsorbent polymer (A), and the water (C) is contained in an amount of 0.1-20.0 parts by weight based on 100 parts by weight of the superabsorbent polymer (A) and the particles (B).
A method of manufacturing an attrition-resistant hydrous superabsorbent polymer, comprising:
- a) adding a superabsorbent polymer (A) with 0.0001-15 parts by weight of particles (B) having i) a BET specific surface area of 300-1500 m2/g and ii) a porosity of 50% or more, based on 100 parts by weight of the superabsorbent polymer (A);
- and
- b) adding the superabsorbent polymer (A) and the particles (B) obtained in a) with 0.1-20.0 parts by weight of water (C), based on 100 parts by weight of the superabsorbent polymer (A) and the particles (B), thus preparing a hydrous superabsorbent polymer.
Dependencies are inferred from the claim text.