Coating compositions

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C - Chemistry, Metallurgy

07

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C07C 59/84 (2006.01) C07C 59/185 (2006.01) C07C 59/347 (2006.01) C07C 59/80 (2006.01) C07C 59/90 (2006.01) C07C 61/22 (2006.01) C07C 62/30 (2006.01) C07C 65/34 (2006.01) C07C 69/738 (2006.01) C07C 211/03 (2006.01) C07C 257/14 (2006.01) C07C 279/00 (2006.01) C07C 333/24 (2006.01) C07D 213/55 (2006.01) C07F 9/38 (2006.01) C07F 17/02 (2006.01) C09D 5/08 (2006.01) C09D 5/44 (2006.01) C09D 201/00 (2006.01)

Patent

CA 2059739

A coating composition comprising a) an organic film-forming binder; and b) a corrosion-inhibiting amount of a substantially water-insoluble mono- or poly- basic salt of: i) a ketoacid having the formula I: Image in which m and n, independently, are 0 or an integer from 1 to 10 provided that the sum of m and n is at least 1; A is C1-C15 alkyl, C2-C15 alkenyl, optionally substituted C3-C12 cycloalkyl, C2-C15 alkyl interrupted by one or more O-, N- or S-atoms, optionally substituted C6-C10 aryl, optionally substituted C7-C12 aralkyl, optionally substituted C7-C12 aralkenyl, a heterocyclic residue or a ferrocenyl residue; R1, R2, R3 and R4 are the same or different and each is a substituent A, hydrogen, OH, O-C1-C15 alkyl, NH2, NH(C1-C15 alkyl), N(C1-C15 alkyl)2, CO2H, CO2(C1-C15 alkyl),SO3H, P(O)(OH)2 P(O)(OH)(O-C1C15 alkyl),P(O)(O-C1-C15 alkyl)2, SH, S(C1-C15 alkyl), nitro, cyano, halogen or two of R1,R2 R3 and R4, together with the carbon atoms to which they are attached, form a C3-C12 cycloalkyl ring or C6- or C10 aryl ring, or one of R1, R2, R3 and R4 together with the carbon atom to which it is attached, and with the group A- C(=O)-, forms a ring, or R1 and R2; or R3 and R4 form a carbonyl group or a C=C double bond, provided that A is not optionally substituted C6-C10 aryl when R1, R2, R3 and R4 are simultaneously hydrogen and provided that R1 and R2, or R3 and R4, respectively, are not simultaneously both OH or both NH2; and ii) a base selected from a) a cation of Group Ia, Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, VIa, VIIa or VIIIa of the Periodic Table of Elements; b) an amine of formula II: Image in which X, Y and Z are the same or different and each is hydrogen, C1-C24 alkyl optionally interrupted by one or more 0-atoms, phenyl, C7-C9 phenylalkyl, C7- C9 alkylphenyl, or two or 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 O-, N- or S- 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 one of X, Y and Z is hydrogen, provided that X, Y and Z are not simultaneously hydrogen; c) a guanidine of formula R-N=C(NH2)2 in which R is hydrogen or C1-C15 alkyl; and d) an amidine of formula R-C(=NH) NH2 in which R is hydrogen or C1-C15 alkyl.

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