METHOD AND COMPOSITION FOR PREVENTING CORROSION OF METAL SURFACES

摘要

The present invention provides a corrosion inhibitor composition comprising: a carrier; at least one compound of formulae (ll)-(VII) or a salt or quaternised derivative thereof: wherein R is C5-21 alkyl or alkenyl, preferably alkyl; each R1 is independently an optionaliy substituted group of formula -(CH2)nX wherein n is an integer from 1 to 6 and X is C(O)OZ or SO3Z and Z is H or a cation; and R' is C4-20 alkyl or alkenyl, preferably alkyl; and a quaternary ammonium compound.