Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1993-09-29
1995-08-15
Dudash, Diana
Coating processes
With post-treatment of coating or coating material
Heating or drying
427386, 4273882, B05D 714
Patent
active
054417724
ABSTRACT:
Carbon steel substrates are protected from corrosive environments by a coating of nonconductive poly(aniline) which has been chemically prepared and cast onto the substrate from solution. The coating can also include other polymers which are miscible with the poly(aniline) but do not protonate it so as to make it conductive. Such polymers can include polyimides, epoxies, and urethane linked diisocyanates, among others. In these blends, a weight composition of at least 5% poly(aniline) to the other polymer is preferred. Overall, the nonconductive form of polyaniline has been found to be more effective in this service than the conductive form. Air oxidation of the poly(aniline) coating before exposure to a corrosive environment enhances the benefits.
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Gilicinski Andrew G.
McAndrew Thomas P.
Robeson Lloyd M.
Air Products and Chemicals Inc.
Dudash Diana
Marsh William F.
Rodgers Mark L.
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