ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,767,766, issued on Oct. 20, was assigned to LG Chem Ltd. (Seoul, South Korea).
"Method of preparing superabsorbent polymer" was invented by Ji Hong Min (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method of preparing a superabsorbent polymer, which includes carrying out a polymerization of a water-soluble ethylene-based unsaturated monomer to form a water-containing gel polymer, and a step of pulverizing the water-containing gel polymer. In the method of preparing a superabsorbent polymer, an interpenetrating polymer network (IPN) is formed on the surface of the superabsorbent polymer during formation of a surface-c...