Process for preparing a non-conductive substrate for...

Details Process for preparing a non-conductive substrate for... Process for preparing a non-conductive substrate for...

2007-05-08

2007-05-08

Wong, Edna (Department: 1753)

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Coating selected area

C205S125000, C205S210000, C205S223000

Reexamination Certificate

active

10964212

ABSTRACT:
A process for preparing a non-conductive substrate for electroplating is proposed. The proposed process comprises contacting the substrate, after desmear, with a combined neutralization/sacrificial coating solution followed by treatment with a carbon dispersion solution. The combined neutralization/sacrificial coating solution neutralizes permanganate residues from the desmear step and applies a sacrificial coating to metallic surfaces on the substrate. The sacrificial coating allows for easy and reliable removal of unwanted carbon residues from the metallic surfaces prior to electroplating.

REFERENCES:
patent: 4724005 (1988-02-01), Minten et al.
patent: 4964959 (1990-10-01), Nelsen et al.
patent: 5139642 (1992-08-01), Randolph et al.
patent: 5674372 (1997-10-01), Kukanskis et al.
patent: 6146701 (2000-11-01), Ferrier
patent: 6565731 (2003-05-01), Couble et al.

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