Elastomers are very effectively stabilized against thermal and oxidative degradation at elevated temperatures with a blend of an N,N,N',N'-tetrasubstituted 1,4-diamino-2-butene, where the substituents are alkyl, cycloalkyl, aralkyl, aryl or mixtures thereof, in combination with a mercaptoimidazole of formula IV
where E is hydrogen, alkyl, cycloalkyl, aryl or phenylalkyl.
弹性体在高温下通过使用N,N,N',N'-四取代的1,4-二
氨基-
2-丁烯与一种巯基
咪唑的混合物(其中取代基为烷基、环烷基、芳基、苄基或它们的混合物)进行稳定,可以有效防止热氧化降解。