1 Referring to the molar ratio to neodecanoic acid
2 The feeding speed depends on the temperature rise, so as to ensure that the reaction is conducted in the appropriate temperature range.
3.2 Mechanisms of side reactions and control strategies
According to the results listed above, it has been found that the concentration of side-product dichloropropanol (DCP) is hard to be lower than 5%, and it always increases as the reaction proceeds. The results in Figure 3 and Figure 2 suggest a hint that the side reactions leading to the generation of DCP is mainly related to the concentration of ECH and the addition of tetramethylammonium chloride (TMAC). In order to illustrate the influence of these two factors more cogent, the experiments shown in Table 3 were designed.
Table 3. Effect of ECH concentration on the side reactions leading to the formation of DCP