Mixtures of non-halogen salts of nitrogen heterocyclics and nitrogen-sulfur heterocyclics
AssigneePetrolite Corporation
InventorPatrick M. Quinlan
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Abstract
This invention relates to non-halogen salts of nitrogen and/or nitrogen-sulfur heterocyclics as corrosion inhibitors for stainless steel-containing systems. These are more effective as corrosion inhibitors when employed in combination with surfactants, preferably of the non-ionic type such as oxyalkylates.
Claims12
A corrosion inhibiting composition of matter comprising a mixture of non-halogen salts of nitrogen heterocyclics and nitrogen-sulfur heterocyclics where the nitrogen heterocyclics are selected from phenanthridines, tetrahydropyrimidines, pyridines, dihydropyridines and mixtures thereof and the sulfur-nitrogen heterocyclics are selected from thiazoles and thiazolenes and mixtures thereof.
Dependencies are inferred from the claim text.