Coating processes – Immersion or partial immersion – Metal base
Patent
1988-07-21
1990-03-13
Beck, Shrive P.
Coating processes
Immersion or partial immersion
Metal base
427436, 4274431, B05D 118
Patent
active
049082418
ABSTRACT:
The present invention provides a process for the currentless deposition of lectropositive metal layers on to appropriate less electropositive metals by contacting an object to be coated with a coating bath, wherein a coating bath is used which contains a metal complex obtained by reacting a monovalent electropositive metal halide with a base, which is capable of complex formation with the electropositive metal, and a hydrohalic acid.
The present invention also provides a coating bath for the currentless deposition of electropositive metal layers on to less electropositive metals, wherein said bath contains an electropositive metal complex obtained by reacting a monovalent electropositive metal halide with a base which is capable of complex formation with the electropositive metal and a hydrohalic acid.
Furthermore, the present invention provides an electropositive metal complex, obtainable by the reaction of a monovalent electropositive metal halide with a base which is capable of complex formation with the electropositive metal and a hydrohalic acid, followed by precipitation from the reaction mixture.
REFERENCES:
patent: 2836515 (1958-05-01), McNally
patent: 3250784 (1966-05-01), Gensheimer
patent: 3294528 (1966-12-01), Popick
patent: 4650691 (1987-03-01), Kinoshita
Ott Walter
Peters Karl
Quast Helmut
Raber Johannes
von Schnering Hans-Georg
Beck Shrive P.
Dang Vi D.
Max-Planck-Gesellschaft zur Foederung der Wissenschaften e.V.
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