- Các phản ứng xảy ra:

$nHOOC{{[C{{H}_{2}}]}_{4}}COOH\ ({{X}_{3}})+nN{{H}_{2}}{{[C{{H}_{2}}]}_{6}}N{{H}_{2}}\ ({{X}_{4}})\xrightarrow{{{t}^{o}}}NH{{[C{{H}_{2}}]}_{6}}NHCO{{[C{{H}_{2}}]}_{4}}CO{{}_{n}}+2n{{H}_{2}}O$

                      axit ađipic                   hexametylenđiamin                           tơ nilon 6,6

$\text{Na}OOC{{[C{{H}_{2}}]}_{4}}COONa\ ({{X}_{1}})+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}HOOC{{[C{{H}_{2}}]}_{4}}COOH\ ({{X}_{3}})+N{{a}_{2}}S{{O}_{4}}$

$\,HOOCC{{H}_{2}}{{[C{{H}_{2}}]}_{2}}C{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\ +NaOH\xrightarrow{{}}NaOOC{{[C{{H}_{2}}]}_{4}}COONa\ ({{X}_{1}})+{{C}_{2}}{{H}_{5}}OH\ ({{X}_{2}})\ +\ {{H}_{2}}O$