Method for dissolution of soft metals from a substrate of a hard

Details Method for dissolution of soft metals from a substrate of a hard Method for dissolution of soft metals from a substrate of a hard

1995-08-11

1996-10-15

El-Arini, Zeinab

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 3, 134 41, 134 28, 134 2214, 134 2219, 252 791, B08B 308, C23G 100, C23G 102, C23G 5036

Patent

active

055650392

ABSTRACT:
A method for selectively dissolving a soft metal from a substrate of a harder metal by application thereto of an organic nitrocompound and a carboxylic acid. The organic nitrocompound, upon exposure to the soft metal, oxidizes the soft metal to form a first soft metal salt. The carboxylic acid, upon exposure to the soft metal salt, reacts with the first soft metal salt to form a second soft metal salt that is soluble in the composition.

REFERENCES:
patent: 3667949 (1972-07-01), Brindisi, Jr. et al.
patent: 3853618 (1974-12-01), Smith
patent: 4004956 (1977-01-01), Brindisi, Jr.
patent: 4397753 (1983-08-01), Czaja
patent: 4439338 (1984-03-01), Tomaiuolo et al.
patent: 4687545 (1987-08-01), Williams et al.
patent: 5030427 (1991-07-01), Monzyk
patent: 5035749 (1991-07-01), Haruta et al.
Fritz et al. (1981), The Reduction of CBr.sup.2 F.sup.2 by Lead--a Novel Pathway to Difluorocarbene, Z. Naturforsch 36b:1375-1380.
Kokkinidis et al. (1981), The Electrocatalytic Influence of Underpotential Lead Adsorbates on the Reduction of Nitrobenzene and Nitrosobenzene on Silver Single Crystal Surfaces in Methanolic Solutions, Electrochimica Acta 26:971-977.
Udupa et al. (1976), Electrosynthesis of Organic Compounds Employing Dissolving Type of Cathodes, Transaction of the SAEST 11:153-157.
Azoo et al. (1968), Lead as a Reducing Agent in the Preparation of Bibenzyls and Aromatic Aoxy-Compounds, J. Chem. Soc. C:2403-2405.

Affiliated with

Also associated with

Rating

Method for dissolution of soft metals from a substrate of a hard does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for dissolution of soft metals from a substrate of a hard, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for dissolution of soft metals from a substrate of a hard will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1242716