ALKYL(OR ARYL)BENZYLPYRIDINIUM CHLORIDES AS STEEL CORROSION INHIBITOR IN MINERALIZED MEDIA Russian patent published in 1999 - IPC

FIELD: corrosion protection. SUBSTANCE: new alkyl(or aryl)benzylpyridinium chlorides with general formula I: (I), where R is ethyl, propyl, butyl, pentyl, hexyl, heptyl, or with general formula II: (II), where R is ethyl, propyl, butyl, pentyl, or with general formula III: (III), where (i) R₁= R₄ is methyl and R₂= R₃ is methyl, (ii) R₁= R₄ is methyl, R₂ ethyl, and R₃ methyl, (iii) R₁= R₄ is propyl, R₂= R₃ is methyl, and (iv) R₁= R₄ propyl, R₂ ethyl, and R₃ methyl, are prepared by interaction of benzyl chloride with substituted pyridines at 80-130 C. EFFECT: extended resource of corrosion inhibitors. 2 tbl, 2 ex