Coating compositions

US5277709A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• William Armstrong · Bolton, GB
• Emyr Phillips · Treville, GB

Key dates

• Filing date: Jan 16, 1992
• Grant date: Jan 11, 1994
• Expiry date: Jan 16, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/086
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

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: ##STR1## 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 C.sub.1 -C.sub.15 alkyl, C.sub.2 -C.sub.15 alkenyl, optionally substituted C.sub.3 -C.sub.12 cycloalkyl, C.sub.2 -C.sub.15 alkyl interrupted by one or more O-, N- or S-atoms, optionally substituted C.sub.6 -C.sub.10 aryl, optionally substituted C.sub.7 -C.sub.12 aralkyl, optionally substituted C.sub.7 -C.sub.12 aralkenyl, a heterocyclic residue or a ferrocenyl residue; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and each is a substituent A, hydrogen, OH, O-C.sub.1 -C.sub.15 alkyl, NH.sub.2, NH(C.sub.1 -C.sub.15 alkyl), N(C.sub.1 -C.sub.15 alkyl).sub.2, CO.sub.2 H, CO.sub.2 (C.sub.1 -C.sub.15 alkyl), SO.sub.3 H, P(O) (OH).sub.2 P(O)(OH)(O-C.sub.1 -C.sub.15 alkyl), P(O) (O-C.sub.1 -C.sub.15 alkyl).sub.2, SH, S(C.sub.1 -C.sub.15 alkyl), nitro, cyano, halogen or two of R.sub.1, R.sub.2 R.sub.3 and R.sub.4, together with the carbon atoms to…