Flame retardant intumescent polyamides comprising repeating structural units of the formulas ##STR1## wherein X is independently chloro or bromo, and n and n' are each independently a positive integer are disclosed.
本发明揭示了由结构重复单元公式##STR1##组成的阻燃膨胀聚酰胺,其中X独立地为
氯或
溴,n和n'各自独立地为正整数。