Decoating titanium and other metallized glass surfaces

Cleaning and liquid contact with solids – Processes – For metallic – siliceous – or calcareous basework – including...

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134 41, 252 792, 252 794, 510245, 510269, 510270, C23G 102, C09K 1304

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active

059320249

ABSTRACT:
Glass surfaces having titanium, stainless steel and/or other metals metallized thereon are denuded or reconditioned for a repeat of the initial metallization by contacting the initially metallized surface with an aqueous mixture of one or more strong mineral acids and various of the transition metal salts containing cerium, vanadium, niobium, praseodymium, zirconium, or hafnium, with the optional inclusion of a surfactant to effect removal of the titanium, stainless steel, or whatever metals that are present in or involved in the coating. Oxidation can usually be entirely completed within minutes at modest temperatures of about 20 to about 90 degrees Celsius. The resultants are then water washed, and flushed or scrubbed from the glass surface which can then be processed the same as new glass for repeating metallization with titanium or other metals.

REFERENCES:
patent: 3951547 (1976-04-01), Fujinami et al.
patent: 3960560 (1976-06-01), Sato
patent: 4110114 (1978-08-01), Sato
patent: 4246328 (1981-01-01), Sato et al.
patent: 4725375 (1988-02-01), Fujii et al.

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