Corrosion inhibitor formulations with improved performance,...

Details Corrosion inhibitor formulations with improved performance,... Corrosion inhibitor formulations with improved performance,...

2011-07-19

2011-07-19

Ogden, Jr., Necholus (Department: 1761)

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

C252S072000, C252S073000, C252S074000, C252S075000, C252S077000

Reexamination Certificate

active

07981314

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

REFERENCES:
patent: 2758970 (1956-08-01), Saukaitis et al.
patent: 3634270 (1972-01-01), Engle et al.
patent: 4541945 (1985-09-01), Anderson et al.
patent: 2005/0123437 (2005-06-01), Cassidy et al.

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