2-Phenyl-indole derivatives of the general formula: ##STR1## wherein R.sub.1 represents a hydroxy radical, a branched- or straight-chain alkyloxy group containing from 1 to 12 carbon atoms, an allyloxy or propargyloxy radical, a cylcoalkyloxy radical containing from 5 to 7 carbon atoms or a benzyloxy radical, R.sub.2 represents a hydroxy radical, an ethoxy, methylsulphonyloxy, benzenesulphonyloxy or toluenesulphonyloxy group and R.sub.3 represents a hydrogen atom, a hydroxy radical or a methoxy group. The said 2-phenyl-indole derivatives are useful in particular as stabilizers of polymers and co-polymers of vinyl chloride.
2-苯基吲哚衍
生物的一般
化学式为:其中R.sub.1代表一个羟基自由基,一个含有1到12个碳原子的支链或直链烷氧基团,一个烯丙氧基或
丙炔氧基自由基,一个含有5到7个碳原子的环烷氧基自由基或苄氧基自由基,R.sub.2代表一个羟基自由基,一个乙氧基,
甲磺酰氧基,苯磺酰氧基或
甲苯磺酰氧基团,R.sub.3代表一个氢原子,一个羟基自由基或一个甲氧基。所述的
2-苯基吲哚衍
生物特别适用于聚
氯乙烯的稳定剂和共聚物。