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