Process for the preparation of quaternary ammonium salts of hydroxycarboxylic acids and quaternary ammonium salts of inorganic acids
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP1254889A1
公开(公告)日:2002-11-06
A quaternary ammonium hydroxycarboxylate is produced by quaternizing a tertiary amine with a hydroxycarboxylic ester represented by the following Formula 1:
wherein R1 to R3 are as defined in the disclosure. By using only one tertiary amine having at least one substituent different from R1 of the ester moiety of the hydroxycarboxylic ester and by controlling the reaction conditions, a mixture of quaternary ammonium hydroxycarboxylates having different quaternary ammonium ions is produced. By reacting an inorganic acid with the quaternary ammonium hydroxycarboxylate or its mixture, a quaternary ammonium salt of inorganic acid or its mixture is produced.
羟基羧酸季铵是通过将叔胺与下式 1 所代表的羟基羧酸酯季铵化而制得:
其中 R1 至 R3 如本公开中所定义。只使用一种叔胺,该叔胺至少有一个取代基不同于羟基羧酸酯的酯基 R1,并控制反应条件,就能生成具有不同季铵离子的羟基羧酸季铵混合物。将无机酸与羟基羧酸季铵盐或其混合物反应,可生成无机酸季铵盐或其混合物。