Process for treating aluminum oxide layers and use in the manufa

Details Process for treating aluminum oxide layers and use in the manufa Process for treating aluminum oxide layers and use in the manufa

1983-08-19

1985-01-08

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 38A, 204 58, 20412975, 101456, 101459, 430159, 430278, 430300, 430302, 430327, C25D 1116, C25D 1118

Patent

active

044926162

ABSTRACT:
A process is disclosed for manufacturing sheets, foils, or strips which involves chemically, mechanically, and/or electrochemically roughening and anodically oxidizing aluminum or aluminum alloy surfaces, followed by two post-treatment steps. In the first step, the metal surface is treated with an aqueous alkali metal silicate solution; thereafter, the surface is treated with an aqueous solution comprising alkaline earth metal ions. The materials produced according to this process are particularly used as supports for offset-printing plates.

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patent: 3902976 (1975-09-01), Walls
patent: 4153461 (1979-05-01), Berghauser et al.
patent: 4301229 (1981-11-01), Sakaki et al.

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