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 stabilization 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]-
咪唑酰亚胺可以通过将3-(3-羟基芳基)-
丙烯氧基化合物与环状
咪唑酰亚胺反应制备而成。这些羟基化合物及其与
羧酸的
酯对
聚合物,尤其是聚
烯烃的热
氧化攻击具有高度的稳定性。这些化合物本身对辐射或气体褪色具有良好的稳定性。