Aminic orthoester derivatives of the formulae
wherein R and R₁ independently are C₁-C₃₀alkyl, C₁-C₃₀ alkyl substituted by alkoxy of 1 to 12 carbon atoms, by amino, by aryl of 6 to 10 carbon atoms or by arylthio of 6 to 10 carbon atoms; C₅-C₁₂cycloalkyl, C₁-C₁₀ aryl or said aryl substituted by C₁-C₁₈ alkyl, halogen and/or -NHR₃ wherein R₃ is C₁-C₁₈ alkyl or phenyl;
R₂ is C₁-C₃₀ alkyl; and
A is hydrogen, C₁-C₃₀ alkyl, C₁-C₃₀ alkyl substituted by alkoxy of 1 to 12 carbon atoms, by amino, by aryl of 6 to 10 carbon atoms or by arylthio of 6 to 10 carbon atoms; C₅-C₁₂ cycloalkyl, C₆-C₁₀ aryl or C₆-C₁₀ aryl substituted by C₁-C₁₈ alkyl, are effective in stabilizing organic materials against oxidative, thermal and actinic degradation.
式中的
氨基原酯衍
生物
其中 R 和 R₁ 独立地是 C₁-C₃₀ 烷基、被 1 至 12 个碳原子的烷氧基、
氨基、6 至 10 个碳原子的芳基或 6 至 10 个碳原子的芳
硫基取代的 C₁-C₃₀ 烷基;C₅-C₁₂ 环烷基、C₁-C₁₀ 芳基或被 C₁-C₁₈ 烷基、卤素和/或 -NHR₃ 取代的芳基,其中 R₃ 是 C₁-C₁₈ 烷基或苯基;
R₂ 是 C₁-C₃₀ 烷基;以及
A 是氢、C₁-C₃₀ 烷基、被 1 至 12 个碳原子的烷氧基、
氨基、6 至 10 个碳原子的芳基或 6 至 10 个碳原子的芳
硫基取代的 C₁-C₃₀ 烷基;C₅-C₁₂环烷基、C₆-C₁₀ 芳基或被 C₁-C₁₈ 烷基取代的 C₆-C₁₀ 芳基,可有效稳定有机材料,防止氧化、热降解和光降解。