Alkaline earth metal salts, transition metal salts and...

C - Chemistry – Metallurgy – 07 – C

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C07C 59/76 (2006.01) C07C 59/84 (2006.01) C07C 59/88 (2006.01) C07C 59/90 (2006.01) C07C 205/56 (2006.01) C07C 229/42 (2006.01) C07C 255/57 (2006.01) C07C 323/62 (2006.01) C07F 7/00 (2006.01) C08K 5/09 (2006.01) C08K 5/56 (2006.01) C09D 5/08 (2006.01)

Patent

CA 2120589

Alkaline earth metal salts. transition metal salts and transition metal complexes of ketocarboxylic acids as corrosion inhibitors Abstract There are described novel alkaline earth metal salts, transition metal salts and transition metal complexes of compounds of the formula I Image (I) in which R1, R2, R3, R4 and R5 are, independently of one another, hydrogen, halogen, nitro, cyano, CF3, C1-C15alkyl, C5-C12cycloalkyl, C2-C15alkenyl, C1,C12haloalkyl, C1-C12alkoxy, C1-C12alkylthio, C6-C10aryl which is unsubstituted or substituted by C1-C4alkyl; C6-C10aryloxy which is unsubstituted or substituted by C1-C4alkyl; C7-C12 arylalkyl which is unsubstituted or substituted on the aryl radical by from 1 to 3 C1-C4- alkyl groups; -CO2R6, -COR6 or Image , where at least one of the radicals R1 to R5 is hydrogen, halogen or C1-C15alkyl, in addition the radicals R1 and R2, R2 and R3, R3 and R4 or R4 and R5 form, together with the carbon atoms to which they are bound, a benzo or cyclohexenyl ring, R6 is C1-C20alkyl, C2-C20alkyl interrupted by oxygen, sulfur or Image ; C7-C12arylalkyl which is unsubstituted or substituted on the aryl radical by from 1 to 3 C1-C4alkyl groups, R7 and R8 are, independently of one another, hydrogen, C1-C24alkyl or C2-C24alkyl inter- rupted by oxygen, sulfur or Image , R9 is hydrogen or C1-C8alkyl, and n is an integer in the range from 1 to 10 for use, as corrosion inhibitors in coating compo- sitions for protecting metal surfaces.

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