C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 8/12 (2006.01) B01J 19/02 (2006.01) C07C 273/04 (2006.01) C23C 8/14 (2006.01) C23C 8/16 (2006.01)
Patent
CA 2063344
A system for the passivation of metal surfaces, and more especially those of stainless steel, titanium, etc., in equipment used for chemical processes, where elements and compounds are formed which have a corrosive action, in particular where temperature and pressure are higher than ambient conditions. In the system the main passivating agent is oxygen (air) combined with at least a second auxiliary agent, characterized by the fact that the latter is ozone (03).
Oyen Wiggs Green & Mutala Llp
Urea Casale S.a.
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