Low toxicity corrosion inhibitor

Details Low toxicity corrosion inhibitor Low toxicity corrosion inhibitor

1997-10-31

2000-01-11

McAvoy, Ellen M.

Compositions

Preservative agents

Anti-corrosion

5483245, 508272, 508284, C09K 300, C07D23330

Patent

active

060132000

ABSTRACT:
A water soluble corrosion inhibitor containing a compound having at least one five-membered heterocyclic ring having at least one thione group and at least one other pendant group is described. Such a corrosion inhibiting compound can be made by reacting together a thiourea and a polyalkylene polyamine. A specific example includes preparing 1-(2-aminoethyl)-2-imidazolidinethione by reacting thiourea, per se, and diethylenetriamine. These corrosion inhibition compounds have greatly reduced aquatic toxicity, and may be employed as corrosion inhibitors in hydrocarbon streams.

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