Composition of corrosion inhibitors for cooling water...

Details Composition of corrosion inhibitors for cooling water... Composition of corrosion inhibitors for cooling water...

C - Chemistry, Metallurgy

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C23F 11/173 (2006.01) C02F 5/12 (2006.01) C02F 5/14 (2006.01) C23F 11/10 (2006.01) C23F 11/167 (2006.01)

Patent

CA 1291635

ABSTRACT A composition and method for inhibiting corrosion in industrial cooling waters which contain hardness and have a pH of at least 8, which composition comprises a water-soluble organic phosphonate capable of inhibiting corrosion in an aqueous alkaline environment and a hydrocarbon polymer contain- ing an N-substituted acrylamide polymer unit having an amide structure as follows: Image where R2 is hydrogen or methyl, R1 is a hydrogen or an alkyl group, R is alkylene or phenylene, and X is sulfonate, or (poly) hydroxyl, and combinations thereof.

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