Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...
Patent
1996-03-28
1998-03-10
Silverberg, Sam
Metal treatment
Process of modifying or maintaining internal physical...
Processes of coating utilizing a reactive composition which...
156325, 148549, 148552, 148691, 148257, C22F 104, C23C 2237
Patent
active
057256837
ABSTRACT:
A process for making an aluminum alloy lighting sheet product having a reflective surface protected by a UV-stable polymer coating. An aluminum alloy sheet is chemically brightened in an aqueous acidic solution, conversion coated, and then coated with a UV-stable polymer. Alternatively, an aluminum alloy sheet is chemically etched in an aqueous alkaline solution, conversion coated, and then coated with a UV-stable polymer. Preferably, the UV-stable polymer contains about 0.5-10 wt. % amorphous silica particles. In another embodiment, an aluminum alloy sheet surface is cleaned, chemically conversion coated and then coated with a coating composition containing a UV-stable polymer and 0.5-10 wt. % of about 0.5-5 microns.
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Askin Albert L.
Bombalski Robert E.
Hinds Paula
Linde David A.
Schultz Paul B.
Aluminum Company of America
Klepac Glenn E.
Silverberg Sam
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