Corrosion inhibited aqueous compositions containing...

Details Corrosion inhibited aqueous compositions containing... Corrosion inhibited aqueous compositions containing...

C - Chemistry, Metallurgy

09

K

31/34

C09K 5/00 (2006.01) C09K 15/30 (2006.01)

Patent

CA 1150043

CORROSION INHIBITED AQUEOUS COMPOSITIONS CONTAINING TERTIARY, BICYCLIC, OR TRICYCLIC AMINES Abstract of the Disclosure Tertiary, cyclic, bridgehead amines are dis- closed as useful corrosion inhibitors for metals in contact with aqueous alkaline liquids. The disclosed amines have been found to be strongly resistant to thermal decomposition, to chemical attack, and to nitrosation. The use of these corrosion inhibitors is particularly desirable in aqueous alcohol compositions useful as a heat exchange liquid in the cooling systems of an internal combustion engine wherein said aqueous solutions are ethylene glycol-based compositions. The disclosed amines are useful under alkaline conditions alone or in combination with conventional corrosion inhibitors such as water-soluble metal salts of tolyltriazole and phosphoric acid, alkali metal nitrites and nitrates, and alkali metal phosphates.

362292

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