Coating processes – With pretreatment of the base – Preapplied reactant or reaction promoter or hardener
Patent
1975-04-16
1977-01-04
Kendall, Ralph S.
Coating processes
With pretreatment of the base
Preapplied reactant or reaction promoter or hardener
427306, 106 1, C23C 302
Patent
active
040014703
ABSTRACT:
A process for the chemical coating of synthetic-resin bodies with nickel or copper utilizing an activation step in which the bath comprises:
0.1 to 20 g gelatin or gum arabic as the protective colloid, 1 to 5 g tartaric acid or citric acid, 1 to 5 g sulfuric acid or hydrochloric acid, 0.1 to 5 g palladium sulfate, 1 to 20 g maleic acid or 1 to 6 g fumaric acid as poly basic carboxylic acids, and water to a volume of 1 liter. The subsequent treatment with the chemical plating bath is carried out without an intervening acceleration treatment.
REFERENCES:
patent: 3011920 (1961-12-01), Shipley
Dubno Herbert
Kendall Ralph S.
Langbein-Pfanhauser Werke AG
Ross Karl F.
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