Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Reexamination Certificate
2007-10-16
2007-10-16
Klemanski, Helene (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
C106S001260
Reexamination Certificate
active
10509586
ABSTRACT:
The invention relates to an aqueous concentrate which is stable with respect to freezing and defrosting and which contains at least one water-soluble or water-dispersible copper compound and, optionally, also a water-soluble or water-dispersible tin compound for use in a diluted state as a bath for the currentless copper plating or bronze plating of objects, especially metal objects such as iron or steel wires, characterized in that it contains at least one complexed water-soluble or water-dispersed copper compound. The invention also relates to an aqueous bath which contains at least one aqueous or water-dispersible copper compound and, optionally, a water-soluble or water-dispersible tin compound for the currentless copper plating of objects in addition to at least one brightening agent and which has an adjusted pH value of less than 2.5. The invention also relates to a method for currentless copper plating or bronze plating of an object, especially a metallic object.
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Derwent abstract of DE 19918833, Oct. 2002.
Derwent abstract of DE 4111558, Jan. 1992.
Nittel Klaus-Dieter
Schneider Ralf
Chemetall GmbH
Fulbright & Jaworski L.L.P.
Klemanski Helene
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