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U.S. Department of Energy
Office of Scientific and Technical Information

Corrosion inhibitor

Patent ·
OSTI ID:6802638
A corrosion inhibitor is described which consists of a mixture containing (1) the reaction product of a nitrogen-containing compound containing at least one active hydrogen attached to the nitrogen atom per molecule; a ketone having at least one hydrogen atom attached to the carbon atom alpha to the carbonyl group; an aldehyde; a fatty acid; and a quaternary ammonium compound; and (2) a secondary quaternary compound which is different from the quaternary compound employed to prepare the reaction product. The inhibitor is added to acidic media which comes into contact with a metal to be protected. (5 claims)
Assignee:
Dow Chemical Co
Patent Number(s):
US 3932296
OSTI ID:
6802638
Country of Publication:
United States
Language:
English