The invention relates to new compounds of the general formula : ##STR1## wherein X represents a hydrogen or halogen atom, R.sub.1 and R.sub.2, which are the same or different, each represent a hydrogen atom or a methoxy radical and R.sub.3 represents an alkyl or aryl radical, with the proviso that at least one of the substituents R.sub.1 and R.sub.2 is not a hydrogen atom. The compounds of formula I are useful for preparing stabilizers for thermoplastic resins.
该发明涉及一般式为:##STR1##的新化合物,其中X代表氢或卤原子,R.sub.1和R.sub.2,相同或不同,各代表氢原子或甲氧基,R.sub.3代表烷基或芳基,但要求至少一个取代基R.sub.1和R.sub.2不是氢原子。式I的化合物可用于制备热塑性
树脂的稳定剂。