A composition, in contact with a corrodable metal surface, comprising:
a) an aqueous-based or oil-based system; and
b) as an inhibitor for protecting the metal surface against corrosion, at least one compound having the formula I or II:
in which
R is C₄-C₂₀alkyl, C₄-C₂₀alkyl interrupted by one or more oxygen atoms, C₄-C₂₀alkenyl, C₆-C₁₀aryl, C₇-C₁₅alkaryl, C₇-C₁₅aralkyl or C₅-C₁₂cycloalkyl;
R¹, R² and R³ are the same or different and each is methyl or, preferably, hydrogen;
M is hydrogen, a metal ion, ammonium or substituted ammonium ion;
a is 0 or 1;
b is 0 or an integer from 1 to 6, preferably 0, 1, 2 or 3 especially 0 or 1; and
c is an integer from 1 to 6; and/or at least one compound having the formula II:
in which R, R³ and a are as defined above.
一种与易腐蚀
金属表面接触的组合物,包括
a)
水性或油性体系;以及
b) 至少一种具有式 I 或式 II 的化合物,作为保护
金属表面免受腐蚀的
抑制剂:
其中
R 是 C₄-C₂₀ 烷基、被一个或多个氧原子间断的 C₄-C₂₀ 烷基、C₄-C₂₀ 烯基、C₆-C₁₀芳基、C₇-C₁₅ 芳烷基、C₇-C₁₅ 芳烷基或 C₅-C₁₂cylo 烷基;
R¹、R² 和 R³ 既可以相同,也可以不同,并且各自是甲基,最好是氢;
M 是氢、
金属离子、
铵或取代的
铵离子;
a 是 0 或 1;
b 是 0 或 1 到 6 的整数,最好是 0、1、2 或 3,特别是 0 或 1;以及
c 是 1 至 6 的整数;和/或至少一种化合物具有式 II:
其中 R、R³ 和 a 如上定义。