Corrosion inhibitors for aqueous systems

C - Chemistry – Metallurgy – 02 – F

Patent

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C02F 5/00 (2006.01) C02F 5/14 (2006.01) C07F 9/30 (2006.01) C07F 9/48 (2006.01) C09K 5/10 (2006.01) C09K 8/54 (2006.01) C09K 15/06 (2006.01) C09K 15/32 (2006.01) C23F 11/10 (2006.01) C23F 11/167 (2006.01) C23F 11/173 (2006.01)

Patent

CA 2442474

A method of inhibiting corrosion in aqueous systems comprising adding to the system a composition comprising mono, bis and oligomeric phosphinosuccinic acid adducts and a method of preparing a composition comprising mono, bis and oligomeric phosphinosuccinic acid adducts comprising adding hypophosphite to fumaric acid slurry or solution in water to create a reaction mixture; and effecting a reaction by introducing a free radical initiator to the reaction mixture.

L'invention concerne un procédé permettant d'inhiber la corrosion dans des systèmes aqueux. Ce procédé consiste à ajouter au système une composition comprenant des adduits d'acide monophosphinosuccinique, bisphosphinosuccinique et phosphinosuccinique oligomère. L'invention concerne également un procédé permettant de préparer une composition comprenant des adduits d'acide monophosphinosuccinique, bisphosphinosuccinique et phosphinosuccinique oligomère, lequel procédé consiste à ajouter de l'hypophosphite à une suspension d'acide fumarique ou une solution d'acide fumarique dans l'eau afin de créer un mélange de réaction, et à effectuer une réaction par introduction d'un initiateur radical libre dans le mélange de réaction.

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