Chemistry: electrical and wave energy – Processes and products
Patent
1975-11-12
1977-06-28
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
204DIG2, C25D 302, C25D 344
Patent
active
040324133
ABSTRACT:
The invention provides an electroplating bath and a method for the electrodeposition of bright aluminum coatings on metals and conductive materials with aprotic oxygen- and water-free, organo-aluminum electrolytes which contain as a brightener at least one additive with at least one sulfonamide, sulfonimide and/or carbimide group. Particularly suitable brighteners are o-benzoic acid sulfonimide, N-benzoylbenzenesulfonamide and the reaction products of o-benzoic acid sulfonimide or N-benzoylbenzenesulfonamide with aluminum triethyl.
Using the method, a fast-adhering and corrosion-resistant bright aluminum coating is obtained which finds use for decorative purposes and, generally, for corrosion protection in surface finishing, e.g., also as mirrors and reflectors for light and heat radiators.
REFERENCES:
patent: 2389179 (1945-11-01), Brown
patent: 3418216 (1968-12-01), Dotzer
patent: 3672965 (1972-06-01), Harwood
patent: 3775260 (1973-11-01), Capuano et al.
Dotzer Richard
Hauschildt Hans-Georg
Todt, deceased Enno
Todt, legal heir by Ruth Katharina
Todt, legal heir by Susanne
Siemens Aktiengesellschaft
Tufariello T. M.
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