Process for electrochemical roughening of aluminum useful for pr

Details Process for electrochemical roughening of aluminum useful for pr Process for electrochemical roughening of aluminum useful for pr

1985-01-04

1986-01-28

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25F 304

Patent

active

045669589

ABSTRACT:
In the electrochemical roughening of aluminum or its alloys useful for printing plate supports, an aqueous mixed electrolyte solution is employed, which contains hydrochloric acid (HCl) and hydrofluoric acid (HF), in particular in an amount of from about 0.5 to 10% by weight of HCl and of from about 0.05 to 5% by weight of HF. The very uniformly roughened support materials are used in the production of offset printing plates.

REFERENCES:
patent: 2775553 (1956-12-01), Kahan
patent: 3330745 (1967-07-01), Jestl et al.
patent: 3632486 (1972-01-01), Herrmann
patent: 3755116 (1973-08-01), Terai et al.
patent: 3766043 (1973-10-01), Herrmann et al.
patent: 3935080 (1976-01-01), Gumbinner
patent: 3963594 (1976-06-01), Brasko
patent: 4072589 (1978-02-01), Golda et al.
Dowell, A. J., Transactions of the Institute of Metal Finishing, vol. 57, p. 138, 1979.

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