Patent ID: 8853454
Filing Date: 2014-10-07
Classification: A01N,C07C,D21H

Abstract:
1. A method for preparing quaternary ammonium cations, wherein the quaternary ammonium cations have the formula: wherein: comprising: taking one mole equivalent of an alcohol, R cooling the alcohol to below 10° C. to give a cooled alcohol; mixing the cooled alcohol with sufficient strong acid, also cooled below 10° C., to give about 1 mole equivalent of hydrogen ions; adding to the alcohol-strong acid mixture a metal halide solution containing about 1 mole equivalent of halide ions in sufficient water to facilitate mixing, and stirring the resultant mixture until it is homogeneous or uniform: adding about 1 mole equivalent to the mixture with stirring of a tertiary amine, R heating the resultant mixture to at least 60° C. to complete the reaction.