Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1991-10-21
1993-01-26
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
106 111, 427306, B01J 3868, C23C 1600, B05D 304, C25D 554
Patent
active
051822415
ABSTRACT:
A process treats the waste water which accumulates as used activation solution in the one-step activation, on the basis of acidic palladium/tin solutions, of large-surface plastic substrates, in particular of non-woven fabric, needled felt or open-pored foam sheets, for the purpose of a subsequent chemical metallization. A concentrate composed of palladium chloride and sodium chloride and then a solid tin salt in a molar ratio of 1:1.5 to 1:4, based on the palladium, is added to the waste water. After a certain maturing time, a ready-to-use activation solution is again obtained for activating a plastic substrate and reduces the amount of the waste water hitherto accumulating after the activation has taken place.
REFERENCES:
patent: 4120822 (1978-10-01), Jameson
patent: 4717421 (1988-01-01), Frisby et al.
patent: 4933010 (1990-06-01), Okabayashi et al.
patent: 5089301 (1992-02-01), Kistrup et al.
Imhof Otwin
Kistrup Holger
Deutsche Automobilgesellschaft mbH
Konopka Paul E.
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