Synergistic corrosion inhibitors for ferrous metals

Details Synergistic corrosion inhibitors for ferrous metals Synergistic corrosion inhibitors for ferrous metals

C - Chemistry, Metallurgy

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C23F 11/00 (2006.01) C02F 5/14 (2006.01) C09K 3/00 (2006.01) C09K 15/32 (2006.01) C23F 11/08 (2006.01)

Patent

CA 1122393

Abstract of the Disclosure Compositions useful for inhibiting the corrosion of ferrous metals in contact with aqueous systems comprise (a) a telomeric compound of formula Image I or salt thereof, wherein R11 is hydrogen or a methyl or ethyl residue; R is hydrogen, a straight- or branched alkyl residue having from 1-18 carbon atoms, a cycloalkyl residue having from 5-12 carbon atoms, an aryl residue, an aralkyl residue, a residue of formula: Image II Wherein R11 has its previous significance; and the sum of n + m is an integer of at most 100; or a residue -OX wherein X is hydrogen or a straight- or branched alkyl residue having 1-4 carbon atoms and R1 is a residue -OX, wherein X has its previous significance, and (b) one or more compounds selected from (i) a zinc salt (ii) a polyphosphate (iii) a silicate and/or (iv) a molybdate.

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