Neoacid corrosion inhibitors

Details Neoacid corrosion inhibitors Neoacid corrosion inhibitors

C - Chemistry, Metallurgy

23

F

C23F 11/12 (2006.01) C09K 5/00 (2006.01)

Patent

CA 2238174

This invention relates to organic acid corrosion inhibitors for use in antifreeze coolant compositions. The corrosion inhibitors comprise a C8 mono- carboxylic acid component, or isomers and/or salts thereof, and a neo-decanoic acid, or isomers and/or salts thereof. The corrosion inhibitors of this invention provide improved corrosion protection to metal surfaces as compared to conventional inhibitors and provide surprisingly improved corrosion protection as compared to inhibitors containing only a single mono-carboxylic acid component.

L'invention concerne des inhibiteurs de corrosion à base d'acide organique, destinés à être utilisés dans les compositions réfrigérantes anti-gel. Les inhibiteurs en question renferment un constituant acide monocarboxylique C¿8?, ou des isomères et/ou des sels de ce constituant, et un acide néo-décanoïque, ou des isomères et/ou des sels de cet acide. Les inhibiteurs considérés offrent une protection améliorée contre la corrosion des surfaces métalliques, par rapport aux inhibiteurs classiques, et ils offrent contre la corrosion une protection considérablement améliorée par rapport à des inhibiteurs renfermant uniquement un seul constituant acide monocarboxylique.

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