| abstract |
The invention discloses a preparation method of nylon multifunctional stabilizer of formula (I), which is carried out by condensing isophthaloyl dichloride and sterically hindered amine of tetraalkylpiperidinamine, and by selecting a suitable organic solvent , in the presence of NaOH solution at a temperature of 20-40°C, react under stirring conditions, recover the solvent through distillation, and isolate the nylon multifunctional stabilizer compound of formula (I). The beneficial effects of the invention are: by using the method of the invention, the reaction output can be increased to 94%, and the waste water consumption and load can be significantly reduced. |