Corrosion inhibitors

Details Corrosion inhibitors Corrosion inhibitors

1983-11-16

1985-05-07

Lieberman, Paul

Compositions

Preservative agents

Anti-corrosion

252146, 252148, 252394, C09K 300

Patent

active

045157081

ABSTRACT:
Corrosion inhibition of metals is obtained treating a system with a corrosion-inhibiting amount, preferably 1 to 10000 ppm, of an optionally-substituted .beta.-pyridyl-ethylamine or a salt thereof, which may be prepared by reacting an amine with a vinylpyridine, preferably in the presence of an acidic catalyst such as acetic acid. The .beta.-pyridyl-ethylamine is a compound of the general formula: ##STR1## wherein R is an alkyl, aryl, aralkyl, alkaryl, halo or amino group of a group --COX where X is hydrogen, alkyl, aryl, hydroxy, alkoxy, aryloxy, amino or halo group, n is zero or an integer from 1 to 4, and R.sup.1 and R.sup.2, which may be the same or different, each represent a hydrogen atom, an optionally substituted hydrocarbyl radical, an alkylamino radical, a heterocyclic radical or a group ##STR2## or R.sup.1 and R.sup.2 with the intervening nitrogen atom together represent a saturated or unsaturated heterocyclic ring optionally containing one or more additional heteroatoms.

REFERENCES:
patent: 3317550 (1967-05-01), Cislak et al.
patent: 3352870 (1967-11-01), Cislak et al.
patent: 3375255 (1968-03-01), Cislak et al.
patent: 3410861 (1968-11-01), McCloskey

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