Corrosion protection of metals using diphenylamine compound(s)

Details Corrosion protection of metals using diphenylamine compound(s) Corrosion protection of metals using diphenylamine compound(s)

1998-09-28

2000-09-19

Medley, Margaret

Compositions

Preservative agents

Anti-corrosion

252391, 252395, 106 1437, 106 1438, 427340, 4273855, 428457, C23F 1110

Patent

active

061207055

ABSTRACT:
A metal article is protected from corrosion under prolonged exposure to normal ambient atmospheric conditions which cause such corrosion by coating the metal article, optionally in the presence of an adherent organic resinous coating, which comprises treating the metal with an effective amount of effective amount of one or more hydrocarbyl-substituted sulfonyl amido diphenylamine compounds for the corrosion protection of the metal article. These compound(s) are of the formula p-(R--SO.sub.2 --NH--C.sub.6 H.sub.4 --NH)--C.sub.6 H.sub.5, where R is a substituted or unsubstituted hydrocarbyl group selected from the group consisting of alkyl, aryl, alkaryl, aralkyl, alkenyl, and cycloalkyl. A particularly preferred compound is p-(p-toluene sulfonyl amido)-diphenylamine.

REFERENCES:
patent: 3770377 (1973-11-01), Scott et al.
patent: 3974323 (1976-08-01), Brouillette et al.
patent: 4778654 (1988-10-01), Bacskai et al.
patent: 4808441 (1989-02-01), Chattha et al.
Chemical Abstracts, vol. 103, 13499 (1984).
Chemical Abstracts, vol. 123, 35356 (1995).

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