A process for preparing certain quaternary ammonium compositions from tertiary amines selected from the group consisting of tertiary amines containing one or two long-chain aliphatic groups, and mixtures thereof, is disclosed. The process comprises reacting the tertiary amine with dimethyl sulfate, diethyl sulfate, or trimethyl phosphate. The reaction is performed in a reaction medium selected from the group consisting of compounds which have a melting point below about 100.degree. C., preferably are capable of dissolving the desired quaternary ammonium compound, and which contain either (i) an ester linkage derived from a fatty acid, (ii) a primary hydroxyl group, or (iii) both, and mixtures of said compounds. The reaction typically is performed at a temperature between about 50.degree. C. and about 150.degree. C., for a length of time sufficient to convert at least a portion of the tertiary amine to the desired quaternary ammonium compound.
本发明揭示了一种从选择自三级胺组中含有一个或两个长链脂肪基的三级胺及其混合物中制备某些季
铵化合物的方法。该方法包括将三级胺与
硫酸二甲酯、
硫酸二乙酯或
磷酸三甲酯反应。反应在反应介质中进行,所述反应介质选择自以下化合物组中:熔点低于约100℃的化合物,最好能够溶解所需的季
铵化合物,且含有来自
脂肪酸的酯键、一级羟基或两者的化合物以及上述化合物的混合物。反应通常在约50℃至约150℃的温度下进行,反应时间足以将至少一部分三级胺转化为所需的季
铵化合物。