CORROSION INHIBITOR FORMULATIONS WITH IMPROVED PERFORMANCE, LOWER TOXICITY AND REDUCED MANUFACTURING HAZARDS

摘要

Aqueous corrosion inhibitor compositions, preferably storage-stable, useful inacidic cleaning solutions for cleaning the surfaces of metal, comprisingreaction products of at least one rosin amine component, at least one non-flammable liquid ketone component, at least one carboxylic acid component, atleast one paraformaldehyde component and water; aqueous acidic cleanersprepared therefrom; and methods of their use. The inventive corrosioninhibitor compositions are made by a simple process which reduces the presenceof toxic and/or flammable raw materials, co-products, residual reactants andchloride ion while providing acid inhibition in aqueous acidic cleaners.