N-ALKYL-N'-POLY(OXYALKYLENYL)HEXAHYDROPYRIMIDINE DERIVATIVES AND METHOD OF PREPARATION THEREOF, CORROSION INHIBITOR APPLIED ON OIL PRODUCTION AND PROCESSING PLANTS Russian patent published in 1999 - IPC

FIELD: industrial organic synthesis. SUBSTANCE: derivatives with general formula I: (I), where R' are alkyl groups - statistical mixture of homologs and isomers with average C atoms' number 1 to 30, R" hydrogen or C₁-C₃-alkyl, A C₂-C₁₀-1,2-alkylene, and p integer from 3 to 50, are prepared by epoxide-oxyalkenylation of N-substituted hexahydropyrimidines with general formula II: (II). Compounds I are excellent corrosion inhibitors for water-in-oil emulsions. EFFECT: increased corrosion-protection activity. 8 cl, 4 tbl, 10 ex