Chemistry: electrical and wave energy – Processes and products
Patent
1989-08-29
1990-03-27
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
204 47, C25D 352, C25D 356
Patent
active
049117998
ABSTRACT:
A process for electroplating palladium containing deposits from baths comprising a combination of a surfactant and a brightener combination. The surfactant is an alkyl, ammonium-type salt containing 4 to 35 carbon atoms. The brightener is 0-benzaldehydesulfonic acid, 1-naphthalene sulfonic acid, 2-naphthalenesulfonic acid, benzenesulfinic acid, oxy-4,4-bis (benzene) sulfinic acid, p-toluene sulfinic acid, 3-trifluoromethyl benzene sulfinic acid, allyl phenyl sulfone, 0-benzoic sulfamide, benzylsulfonyl propionamide, phenylsulfonyl acetamide, 3-(phenylsulfonyl) propionamide, benzene sulfonamide, bis (phenylsulfonyl) methane, guanidine carbonate, sulfaguanidine or nicotinic acid. This combination provides deposits having superior adhesion and ductility.
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Abys Joseph A.
Chinchankar Vijay
Eckert Virginia T.
Kadija Igor V.
Kudrak, Jr. Edward J.
AT&T Bell Laboratories
Kaplan G. L.
Nilsen Walter G.
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