| abstract |
(57) Abstract: A corrosion inhibiting composition for protecting a metal surface is provided. SOLUTION: The following formula I: (E.g., R 1 = -OH or -COOH substituted C 5-11 alkyl, R 2, R 3 = H , R 4 = OH, R 5 = -CH 2 - A compound of PO (OH) 2 , m = 0) and a compound of formula II (For example, R 14 , R 15 = H, C 1-4 alkyl, —OH-substituted C 2-4 alkyl, or a heterocycle is formed with N atom and both, X = direct bond, a = 1, R 18 = C 1-4 alkyl,- OH-substituted C 2-4 alkyl, phenyl) salt with amine, Or a salt of zirconium, bismuth or calcium; and a coating composition containing the same and an organic film-forming binder. |