The new N-[3-(3-hydroxyaryl)-2-hydroxypropyl]-imides may be prepared by reacting 3-(3-hydroxyaryl)-propenoxides with cyclic imides. These hydroxy compounds as well as their esters with carboxylic acids are highly effective in the stabilisation of polymers, preferably of polyolefins, against thermal-oxydative attack. The compounds themselves exhibit a good stability against discoloration by radiation or gas fading.
新的N-[3-(3-羟基芳基)-2-羟基丙基]-
苯并咪唑可以通过将3-(3-羟基芳基)-
丙烯氧化物与环状
苯并咪唑反应来制备。这些羟基化合物以及它们与
羧酸的
酯类在聚合物的稳定化方面表现出高效性,特别是对聚烯烃的热氧化攻击。这些化合物本身对辐射或气体褪色表现出良好的稳定性。