Title: Electroplating baths for nickel and brightener-leveler compositions therefor

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; R.sub.3 is a hydrogen or an alkyl group; R.sub.4 and R.sub.5 are hydrogen or an alkyl group; X is halogen and N is an integer from 0 to 2.

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Inventors: Allan, John L. (Glen Rock, NJ, US)
Srinivasan, Kollengode V. (Saddle Brook, NJ, US)
Readio, Philip D. (Sparta, NJ, US)
Cestero, Judit (New York, NY, US)

Application Number: 589114
Filing Date: 1975-06-23
Publication_date: 1976-04-27
Assignee: Dart Industries Inc. (Los Angeles, CA)
Primary Class(es): 205/275 205/277, 205/279, 546/140, 546/174, 546/261, 546/263, 546/267
Other Classes:
US Patent Ref:

2658867	Nov, 1953	Little	204/49.
3190821	Jun, 1965	Todt	204/49.

Other Refs: 2,160,737932,843

Jul, 1973	FR
Jul, 1963	UK

Primary Examiner: Kaplan, G. L.
Assistant Examiner:
Attorney: Valles; Fred S., Brennan; Bryant W., LeMaire; Margareta