Methods for inhibiting corrosion in aqueous media

Details Methods for inhibiting corrosion in aqueous media Methods for inhibiting corrosion in aqueous media

C - Chemistry, Metallurgy

23

F

C23F 11/10 (2006.01) C02F 5/10 (2006.01) C02F 5/12 (2006.01) C02F 5/14 (2006.01) C23F 11/08 (2006.01) C23F 11/12 (2006.01) C23F 11/173 (2006.01) C23F 14/02 (2006.01)

Patent

CA 2740692

Methods are provided to inhibit corrosion of metals in contact with aqueous systems such as cooling water systems. In accordance with the methods, a hydroxyacid compound and orthophosphates are used to treat the system. Additionally, an adjuvant including poly(epoxysuccinic acids), an additional hydroxy acid, and a polycarboxylic acid, may be added to the system water.

Cette invention concerne des procédés dinhibition de la corrosion de métaux en contact avec des systèmes aqueux tels que des systèmes de refroidissement par leau. Selon ces procédés un composé hydroxyacide et des orthophosphates sont utilisés pour traiter le système. De plus, un adjuvant comprenant des acides succiniques polyépoxydes, un hydroxy-acide supplémentaire, et un acide polycarboxylique, peut être ajouté à leau du système.

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