Coating processes – With post-treatment of coating or coating material – Heating or drying
Reexamination Certificate
2005-08-16
2005-08-16
Green, Anthony J. (Department: 1755)
Coating processes
With post-treatment of coating or coating material
Heating or drying
C106S014110, C106S014150, C106S014410, C106S014420, C427S386000, C427S421100, C427S435000
Reexamination Certificate
active
06929826
ABSTRACT:
An aqueous composition for applying to and treating metallic substrates that does not include chrome or chromium-containing compounds, does not include an organic solvent, and promotes adhesion of overcoat layers that are applied to the metallic substrate. The composition is an aqueous solution that includes of two hydrolyzed silanes, and water, wherein the composition has a pH of less than or equal to 5 and is substantially free of organic solvent and any chromium-containing compound.Also provided is a method for applying a chromium-free treatment on a metallic substrate comprising mixing a cross-liking agent with the above-described composition and applying the resulting mixture to the metallic substrate, and drying the metallic substrate.
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A.J. Vreugdenhil, V.N. Balbyshev, M.S. Donley, SNAP: Characterization of the solution chemistry and film performance of a silicon sol-gel surface treatment for AI 2024-T3, Polymer Preprint, (Accepted May 2000).
A.J. Vreugdenhil, V.N. Balbyshev, M.S. Donley, Nanostructured Silicon Sol-Gel Surface Treatments For AI 2024-T3 Protection, Journal of Coatings Technology, vol. 73, No. 915, Apr. 2001, pp 35-43.
Balbyshev Vsevolod N.
Donley Michael S.
Parkhill Robert L.
Vreugdenhil Andrew J.
Bricker Charles E.
Green Anthony J.
Kundert Thomas L.
The United States of America as represented by the Secretary of
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