Cleaning and passivating treatment for metals

Details Cleaning and passivating treatment for metals Cleaning and passivating treatment for metals

C - Chemistry, Metallurgy

23

G

C23G 1/19 (2006.01) C23F 11/08 (2006.01) C23G 1/24 (2006.01)

Patent

CA 2143471

A cleaning and passivating treatment for metals comprising an amphoteric surfactant which is a caprylic acid derivative of imidazoline compounds. The treatment is substantially free of amines, alkanolamines and phosphates. The preferred treatment includes small quantities of borate ions and molybdate ions. In addition a nonionic surfactant may be added as a foam control agent.

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