Chemistry: electrical and wave energy – Processes and products
Patent
1975-06-23
1976-04-27
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
204DIG2, 2602948R, 260295R, 260295A, 260295AM, C25D 316, C07D21355
Patent
active
039533042
ABSTRACT:
An aqueous acid nickel electroplating bath containing as a brightener-leveling agent the reaction product of an acetylenic diester of a halogenated saturated aliphatic acid with a heterocyclic compound containing a tertiary nitrogen atom. The brightener may have the general formula ##EQU1## wherein R.sub.1 and R.sub.2 are hydrogen, halogen or a hydroxy, carboxy, carboxyester, sulphoxy, alkyl, amino or amido group;
REFERENCES:
patent: 2658867 (1953-11-01), Little
patent: 3190821 (1965-06-01), Todt
Allan John L.
Cestero Judit
Readio Philip D.
Srinivasan Kollengode V.
Brennan Bryant W.
Dart Industries Inc.
Kaplan G. L.
LeMaire Margareta
Valles Fred S.
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