Aqueous solutions containing dithionic acid and/or metal dithionate
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United States of America Patent
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Issued Date -
Jan 3, 2002
app pub date -
Feb 22, 2001
filing date -
Mar 1, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention relates to solutions of dithionic acid and/or dithionate salts for use in metal finishing processes such as those used for the cleaning, activating, electroplating, electroless plating, conversion coating and/or other pre-treatment or post-treatment of a metallic surface. In particular the solutions are a useful electrolyte for the electroplating of metallic coatings, especially, Sn, Cu, Ni, Zn and precious metals, onto metal or plastic substrates and/or other surfaces.
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