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Hydrocarbon‐soluble alkylaniline/formaldehyde oligomers as corrosion inhibitors
Author(s) -
Bacskai R.,
Schroeder A. H.,
Young D. C.
Publication year - 1991
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1991.070420909
Subject(s) - monomer , methylene , formaldehyde , chemistry , aniline , polymer chemistry , alkylation , aqueous solution , oligomer , organic chemistry , condensation polymer , ring (chemistry) , catalysis , polymer
Hydrocarbon‐soluble oligomers were prepared by the acid‐catalyzed condensation of alkylanilines with formaldehyde. Highest molecular weight oligomers (MW ∼ 6000) were obtained from alkylanilines prepared by the Friedel‐Crafts alkylation of aniline with α‐olefins. By NMR, it was shown that the oligomers contain structures corresponding to methylene‐linked aromatic rings and methylene linked to both an aromatic ring and a nitrogen atom. The oligomers exhibit very good initial inhibition of metal corrosion in aqueous environment; and the inhibition is more persistent than that observed with monomeric analogs.