C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
C23G 1/12 (2006.01) C23F 1/20 (2006.01) C25D 5/44 (2006.01) C25D 11/16 (2006.01) C25F 3/20 (2006.01)
Patent
CA 2337374
This invention provides an improved composition and process for pretreatment aluminum prior to electroplating. The invention is an aqueous composition comprised of an acid, an oxidizing agent, and, optionally, a halogenated compound. This composition is useful in a process that effectively removes smut that results from the etching step of the aluminum pretreatment process. Alternatively, the composition can be used in a process which combines the etch and desmut steps in Al pretreatment.
Butkovsky Paul A.
Mehta Maulik Dhanesh
Atotech Deutschland Gmbh
Borden Ladner Gervais Llp
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