N,N'-Di-(hydroxy-phenyl)-derivatives of piperazine having the general formula:
are disclosed. These compounds are useful for stabilizing thermoplastic polymers, in particular polyolefins, against sunlight, heat and oxidation.
Polymeric compositions stabilized with said compounds are also disclosed.
本发明公开了具有通式的 N,N'-二-(羟基苯基)-
哌嗪衍
生物:
的
哌嗪衍
生物。这些化合物可用于稳定热塑性聚合物,特别是聚烯烃,使其免受阳光、热量和氧化的影响。
还公开了用上述化合物稳定的聚合物组合物。