Ciba-geigy Corporation

Ciga-geigy Corporation

David C Parker

Brian G Clubley

David W Cartmell

A composition, in contact with a corrodable metal surface, comprising:

Corrosion inhibiting compositions

A composition, in contact with a corrodable metal surface, which composition comprises: (A) an aqueous-based or oil-based system; and (B) as inhibitor for protecting the metal surface against corrosion, a mixture comprising at least one compound of formula I and at least one compound of formula II: ##STR1## wherein R is a monoalkylglycol ether of formula II

Corrosion inhibitor

New compounds have the formula I: ##STR1## wherein R is a C.sub.1 -C.sub.12 straight or branched chain alkyl residue, a C.sub.2 -C.sub.12 straight or branched chain alkenyl residue, a C.sub.5 -C.sub.12 cycloalkyl residue, a C.sub.6 -C.sub.10 aryl residue or a C.sub.7 -C.sub.12 aralkyl residue; and X is a C.sub.1 -C.sub.10 straight or branched alkylene residue, a C.sub.2 -C.sub.10 straight or branched chain alkenylene residue or a C.sub.6 -C.sub.10 arylene residue; as well as derivatives of the compounds of formula I; and enantiomers, racemic mixtures, and mixtures of diastereomers. The new compounds are useful e.g. as corrosion inhibitors in aqueous systems.

Growing community of inventors

Macclesfield, United Kingdom

David C Parker