Substituted pyridines and dihydropyridines as corrosion inhibitors
AssigneePetrolite Corporation
InventorsBernardus A. Oude Alink, Neil E. S. Thompson
Life of this patent
Estimating the term…
Abstract
This invention relates to a process of preparing alkylpyridines and N-substituted alkyldihydropyridines from hexahydrotriazines. These products may be further reacted to form other compositions. The products of the reaction are useful as corrosion inhibitors.
Claims6
A process of inhibiting corrosion of metals in aqueous systems containing corrosive substances which comprises adding to said system 0.25 to 7500 p.p.m. of a mixture of an alkylpyridine and an N-substituted alkyl 1,2-dihydropyridine prepared by reacting a hexahydrotriazine 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.
Dependencies are inferred from the claim text.