Chemistry: electrical and wave energy – Processes and products
Patent
1989-07-19
1990-04-17
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 42, C25D 1122
Patent
active
049177800
ABSTRACT:
Undesirable greenish tinges that normally result when coloring anodized aluminum by AC electrolysis in solutions of silver salts can be avoided by adding to the electrolytes an appropriate amount of p-toluenesulfonic acid and/or its salts. The coloring solution may also contain (i) sulfuric acid, (ii) alkali metal, ammonium and/or alkaline earth metal salts of sulfuric acid and/or (iii) alkali metal, ammonium and/or alkaline earth metal acetates.
REFERENCES:
patent: 3915813 (1975-10-01), Abe et al.
patent: 3929593 (1975-12-01), Sugiyama et al.
patent: 4115212 (1978-09-01), Patrie et al.
patent: 4128460 (1978-12-01), Nishimura et al.
patent: 4226680 (1980-10-01), Cooke et al.
patent: 4430169 (1984-02-01), Woods
S. Wernick et al., the Surface Treatment and Finishing of Aluminum and its Alloys, Fifth edition, vol. 1, ASM International, Metals Park, Ohio, p. 611.
Chem. Abstracts 105(10), Abstract No. 87431z.
Chem. Abstracts 93(20), Abstract No. 194174y.
Brodalla Dieter
de Riese-Meyer Loert
Lindener Juergen
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Leader William T.
Niebling John F.
Szoke Ernest G.
LandOfFree
Process for coloring anodized aluminum by AC electrolysis does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for coloring anodized aluminum by AC electrolysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for coloring anodized aluminum by AC electrolysis will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1050507