Preparation of mixture of nitrogen and sulfur-nitrogen heterocyclics and use in corrosion inhibiting
AssigneePetrolite Corporation
InventorNeil E. S. Thompson
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Abstract
A process of preparing sulfur-containing compositions which comprises reacting hexahydrotriazines, or the precursors thereof, with sulfur or sulfur-containing compounds. The products of the reaction are useful as corrosion inhibitors. Additionally, ketones or the reaction products of ketones and ammonia are reacted with sulfur or sulfur-containing compounds to yield corrosion inhibitors.
Claims15
A process of preparing sulfur-containing compositions which comprises reacting hexahydrotriazines in the presence of a Lewis acid at a temperature between 80.degree. C. and 300.degree. C. for a period of about 0.5 to 24 hours, or the precursors thereof, with a member from the group consisting of sulfur and sulfur-containing compounds, where the precursors are aldehydes, except for acetaldehyde, reacted with ammonia.
A process of preparing sulfur-containing compositions which comprises reacting 2, 2, 4, 4-dipentamethylene 5, 6-tetramethylene 2, 2, 4, 4-tetrahydropyrimidine, or the cyclohexanone precursor thereof, with sulfur.
A composition containing alkyl or cycloalkylpyridines, N-substituted alkyl or cycloalkyl dihydropyridines and a member from the group consisting of thiazoles and thiazolines.
Dependencies are inferred from the claim text.