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

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Claims: What is claimed is:

1. A plating bath for the electroplating of nickel comprising an aqueous acidic solution of at least one nickel salt and from about 0.01 to about 1.0 grams per liter of a quaternary compound having the general formula ##EQU5## 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 hydrogen or an alkyl group;

R.sub.4 and R.sub.5 are hydrogen or an alkyl group;

X is a halogen and

n is an integer from 0 to 2.

2. The plating bath of claim 1 wherein X is a chlorine or a bromine.

3. The plating bath of claim 1, wherein R.sub.1 and R.sub.2 each is a hydrogen.

4. The plating bath of claim 1, wherein R.sub.3 is a hydrogen and n is 0.

5. The plating bath of claim 1 wherein R.sub.4 and R.sub.5 each is a hydrogen.

6. The plating bath of claim 1, wherein the quaternary compound is the reaction product of pyridine and 1,4 bis(chloroacetoxy)-2-butyne and having the formula ##EQU6##

7. The plating bath of claim 1, wherein the quaternary compound is added in concentrations from about 0.01 to about 0.5 grams per liter primarily as a leveling agent in cooperations with at least one other brightener.

8. The plating bath of claim 1 wherein saccharin is present in concentrations from about 0.2 to about 5.0 grams per liter.

9. The plating bath of claim 8 wherein the quaternary compound is present in concentrations of from about 0.1 to about 1.0 grams per liter.

10. The plating bath of claim 9 also containing at least one other organic sulfoxy compound.

11. The plating bath of claim 10 wherein the organic sulfoxy compound is sodium naphthalene-1,3,6-trisulfonate.

12. The plating bath of claim 10, wherein the organic sulfoxy compound is sodium vinyl sulfonate.

13. The plating bath of claim 10, wherein the organic sulfoxy compound is sodium allyl sulfonate.

14. A quaternary compound having the general formula ##EQU7## 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 hydrogen or an alkyl group;

R.sub.4 and R.sub.5 are hydrogen or an alkyl group;

X is a halogen and

n is an integer from 0 to 2.

15. The quaternary compound of claim 14 wherein X is a chlorine or a bromine.

16. The quaternary compound of claim 14 wherein R.sub.1 and R.sub.2 each is a hydrogen.

17. The quaternary compound of claim 14 wherein R.sub.3 is a hydrogen and n is 0.

18. The quaternary compound of claim 14 wherein R.sub.4 and R.sub.5 each is a hydrogen.

19. The quaternary compound of claim 14 wherein the quaternary compound is the reaction product of pyridine and 1,4 bis(chloroacetoxy)-2-butyne and having the formula ##EQU8##

Other info:

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