Aluminum foil cleaning process

Details Aluminum foil cleaning process Aluminum foil cleaning process

1974-10-03

1976-05-04

Wolk, Morris O.

Cleaning and liquid contact with solids

Processes

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

252 791, C23G 100

Patent

active

039544982

ABSTRACT:
A process for preparing an aluminum foil for coating with photoresist for the purpose of preparing an etched strip for semiconductor assembly utilizing the step of cleaning said aluminum surface with a water solution comprising one to five percent ammonium persulfate, one to five percent sodium chlorate and one to three percent of a surfactant selected from the group consisting of dioctyl sodium sulfo succinate and dodecyl benzene sulfonate.

REFERENCES:
patent: 2567835 (1951-09-01), Alquist et al.
patent: 2678876 (1954-05-01), Burnside
patent: 2795490 (1957-06-01), Newman et al.
patent: 3048547 (1962-08-01), Vosbigian
patent: 3051603 (1962-08-01), Michaels
patent: 3140203 (1964-07-01), Grunwald
patent: 3345217 (1967-10-01), Wollgien et al.
patent: 3634262 (1972-01-01), Grunwald et al.

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