ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,351, issued on Oct. 21, was assigned to TETRA Technologies Inc. (The Woodlands, Texas).
"Method of preparing ionic fluids" was invented by Arthur G. Mack (Conroe, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of preparing MEP including the steps of: (a) adding N-methylpyrrolidine to an excess amount of ethyl bromide located in a reactor, wherein the N-methylpyrrolidine will react with the ethyl bromide forming MEP, wherein the reaction will have a reaction temperature that can varies over time; (b) stopping addition of N-methylpyrrolidine when the excess of ethyl bromide to the N-methylpyrrolidine falls within a range of 3:1 to 1.5:1...