Composition containing alkane sulfonic acid and ferric nitrate f

Details Composition containing alkane sulfonic acid and ferric nitrate f Composition containing alkane sulfonic acid and ferric nitrate f

1989-04-07

1990-09-18

Lieberman, Paul

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252 791, 252 792, 252 793, 252 794, 156656, 156666, C23F 100, C23G 102, C09K 1306, C11D 708

Patent

active

049576534

ABSTRACT:
A composition for stripping tin or solder, as well as any underlying copper-tin alloy, from copper surfaces, containing an alkane sulfonic acid, preferably methane sulfonic acid, and an inroganic nitrate, preferably ferric nitrate. The composition effects stripping without any appreciable formation of sludge or precipitate or suspended particles.

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patent: 4424097 (1984-01-01), Lipka et al.
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patent: 4673521 (1987-06-01), Sullivan et al.
patent: 4687545 (1987-08-01), Williams et al.
patent: 4713144 (1987-12-01), Schiller

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