Process for inhibiting corrosion of metals in aqueous systems

C - Chemistry – Metallurgy – 09 – K

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C09K 3/00 (2006.01) C02F 5/10 (2006.01) C02F 5/12 (2006.01) C23F 11/12 (2006.01)

Patent

CA 1071394

ABSTRACT OF THE DISCLOSURE A process for inhibiting corrosion of metals in contact with aqueous systems is provided by maintaining in contact with metals a corrosion inhibiting composition that contains a compound, e.g. dimers, trimers and resins, containing the quinomethide group represented as follows: Image This process is applicable to inhibiting corrosion of and scale deposi- tion on many metals, e.g., ferrous and non-ferrous, including mild steel, cast iron, zinc, copper, copper-based alloys and aluminum, which are subject to corrosion and/or scale deposition in circulating water systems.

276564

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