Method of retarding corrosion of metal surfaces in contact...

Details Method of retarding corrosion of metal surfaces in contact... Method of retarding corrosion of metal surfaces in contact...

C - Chemistry, Metallurgy

23

F

C23F 11/14 (2006.01) C23F 11/04 (2006.01) C23F 11/08 (2006.01) C23F 11/10 (2006.01)

Patent

CA 2053814

66530-500 ABSTRACT OF THE DISCLOSURE New oxygen scavengers for boiler waters have been discovered, which oxygen scavengers are based upon N, N, N', N'-tetra substituted phenylenediamines. These compounds pro- vide oxygen scavenging capabilities, metal passivating cap- abilities, volatility such that condensate systems in an operating boiler are protected, and may be formulated with other oxygen scavengers and other common treatment agents used in boiler waters. The preferred tetra substituted phenylene- diamines are N, N, N', N'-tetramethyl-1,4-phenylenediamines, or its precursors.

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