申请人:CIBA-GEIGY AG
公开号:EP0412933A1
公开(公告)日:1991-02-13
The present invention provides coating compositions comprising
a) an organic film-forming binder; and
b) a corrosion-inhibiting amount of a salt of
i) a ketoacid having the formula (I):
wherein a is 1,2,3,4 or 5; the R substituents are the same or different and each is hydrogen; halogen; nitro; cyano; CF₃; C₁-C₁₅ alkyl; C₅-C₁₂ cycloalkyl; C₂-C₁₅ alkenyl; C₁-C₁₂ halogenoalkyl; C₁-C₁₂ alkoxy; C₁-C₁₂ thioalkyl; C₆-C₁₂ aryl; C₆-C₁₀ aryloxy; C₇-C₁₂ alkaryl; -CO₂R₁ in which R₁ is a) hydrogen, b) C₁-C₂₀ alkyl optionally interrupted by one or more O-, N- or S-atoms, c) C₇-C₁₂ alkaryl or d) C₆-C₁₂ aryl optionally substituted with one or more carboxy groups; -COR₁ in which R₁ has its previous significance; NR₂R₃ in which R₂ and R₃ are the same or different and each is hydrogen or C₁-C₂₄ alkyl optionally interrupted by one or more O, S or NH moieties; or when a is 2, 3, 4 or 5, two adjacent groups R may be the atoms required to form a fused benzene or cyclohexyl ring; and n is an integer from 1 to 10; and
ii) an amine of formula II:
wherein X, Y and Z are the same or different, and are hydrogen; C₄-C₂₄ alkyl optionally interrupted by one or more O-atoms; phenyl; C₇-C₉ phenylalkyl; C₇-C₉ alkylphenyl; or two of X, Y and Z together with the N-atom to which they are attached form a 5-, 6- or 7-membered heterocyclic residue, which optionally contains a further oxygen, nitrogen or sulphur atom and which is optionally substituted by one or more C₁-C₄ alkyl, amino, hydroxy, carboxy or C₁-C₄ carboxy alkyl groups, and the other of X, Y and Z is hydrogen; provided that X, Y and Z are not simultaneously hydrogen.
The salts derived from ketoacids of formula I and amines of formula II are new compounds.
本发明提供的涂料组合物包括
a) 有机成膜粘合剂;和
b) 一种盐的腐蚀抑制剂。
i) 具有式(I)的酮酸:
其中 a 为 1、2、3、4 或 5;R 取代基相同或不同,且各自为氢;卤素;硝基;氰基;CF₃;C₁-C₁₅ 烷基;C₅-C₁₂ 环烷基;C₂-C₁₅ 烯基;C₁-C₁₂ 卤代烷基;C₁-C₁₂ 烷氧基;C₁-C₁₂ 硫代烷基;C₆-C₁₂ 芳基;C₆-C₁₀ 芳氧基; C₇-C₁₂ 烷芳基;-CO₂R₁,其中 R₁ a) 氢; b) C₁-C₂₀烷基,可选被一个或多个 O-、N- 或 S 原子间断、c) C₇-C₁₂烷芳基或 d) C₆-C₁₂芳基,可选地被一个或多个羧基取代;-COR₁,其中 R₁ 具有其先前的意义; NR₂R₃ ,其中 R₂ 和 R₃ 相同或不同,并且各自为氢或 C₁-C₂₄烷基,可选择被一个或多个 O、S 或 NH 分子打断;或当 a 为 2、3、4 或 5 时,两个相邻基团 R 可为形成融合苯环或环己基环所需的原子;且 n 为 1 至 10 的整数;以及
ii) 式 II 的胺
其中 X、Y 和 Z 相同或不同,并且是氢;C₄-C₂₄ 烷基,可选被一个或多个 O 原子打断;苯基;C₇-C₉ 苯基烷基;C₇-C₉ 烷基苯基;或 X、Y 和 Z 中的两个与它们所连接的 N 原子一起形成 5、6 或 7 元杂环残基,该残基可选地含有另一个氧原子、氮原子或硫原子,并可选地被一个或多个 C₁-C₄ 烷基、氨基、羟基、羧基或 C₁-C₄ 羧基烷基取代,而 X、Y 和 Z 中的另一个是氢;条件是 X、Y 和 Z 不能同时是氢。
由式 I 的酮酸和式 II 的胺衍生的盐是新化合物。