A vinyl monomer inhibitor systems is disclosed which includes 2,6-dinitro-4-alkylated phenols and mixtures of 2,6-dinitro-4-alkylated phenols and 2,4-dinitro-6-alkylated phenols as well as vinyl monomer stabilized composition including an effective amount of the inhibitor systems. A method for the preparation and use is also disclosed where phenol is first alkylated under conditions that afford predominately monoalkylated phenols having a high para alkylation preference, followed by nitration of the alkylated phenols to form a dinitrated, monoalkylated product.
本发明揭示了一种
乙烯基单体
抑制剂体系,其中包括2,6-二硝基-4-烷基化
酚和2,6-二硝基-4-烷基化
酚和2,4-二硝基-6-烷基化
酚的混合物,以及含有效量
抑制剂体系的
乙烯基单体稳定组合物。本发明还揭示了一种制备和使用的方法,其中
苯酚首先在条件下烷基化,产生具有高邻位烷基化优先性的主要是单烷基化
苯酚,然后对烷基化
苯酚进行硝化,形成二硝基化,单烷基化产物。