C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
253/130, 31/64
C10M 129/38 (2006.01) C07C 59/185 (2006.01) C07C 59/347 (2006.01) C10M 129/46 (2006.01) C23F 11/12 (2006.01)
Patent
CA 1161633
ABSTRACT OF THE DISCLOSURE Corrosion-inhibited compositions are described comprising a functional fluid in contact with a ferrous metal and, as corrosion inhibitor, a compound having the formula: Image wherein X is H, an alkali- or alkaline earth metal, NH4, the residue of a protonated amine, or the group -OX is the residue of an alkanol having from 1 to 20 carbon atoms or of di-, tri- or tetra-ol having from 2 to 12 carbon atoms; R1, R2 and R4 are the same or different and each is H or -CH2CH2COOX wherein X has its previous meaning; R3 and R5 are the same or different and each is H, -CH2CH2COOX wherein X has its previous meaning, or R3 or R5 is a straight- or branched chain alkyl group having from 3 to 16 carbon atoms; or R3 and R5, together with the carbon atom to which they are each attached, may form a cycloalkanone ring containing from 5 to 15 carbon atoms.
379369
Ag Ciba-Geigy
Fetherstonhaugh & Co.
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