C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 5/14 (2006.01) C23F 11/167 (2006.01)
Patent
CA 2218797
This invention relates to the use of iminoalkylenephosphonic acids to prevent corrosion, including both localized corrosion and general corrosion on iron based metal surfaces in contact with a corrosive system water in an aqueous system. The invention also relates to the use of the iminoalkylenephosphonic acids to control formation, deposition and adherence of scale at the surfaces of metals in contact with a scale-forming system water in an aqueous system.
La présente invention concerne l'utilisation d'acides iminoalkylènephosphoniques pour prévenir la corrosion, aussi bien la corrosion localisée que la corrosion générale, des surfaces métalliques à base de fer en contact avec un milieu aqueux corrosif. L'invention concerne également l'utilisation des acides iminoalkylènephosphoniques pour limiter la formation, le dépôt et l'adhésion du tartre sur les surfaces métalliques en contact avec un milieu aqueux favorisant la formation de tartre.
Tang Jiansheng
Yang Bo
Nalco Chemical Company
Smart & Biggar
LandOfFree
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