US4040916A
Expired / Lapsed
US
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Zinc plating bath and method of forming a non-dendritic zinc layer
Assignee: General Electric Co
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Filing: 1976-08-18
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Granted: 1977-08-09
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Expires: 1996-08-18
Abstract
Abstract A method is described for forming a non-dendritic zinc layer which includes providing a deposition solution containing a zinc compound and from 0.001 to 10 weight percent of a non-ionic surfactant additive of oxaalkyl or polyoxaalkyl perfluoroalkane sulfonamide, positioning a pair of spaced apart electrodes within the solution, applying an electric current to the electrodes, and depositing a non-dendritic zinc layer on the negative electrode.
Inventors
- 👤 Fritz G. Will
- 👤 Fred F. Holub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:21
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22; H; H01; H01M; H01M10/00; H01M10/02; H01M10/36; H01M10/365; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
A method for forming a non-dendritic zinc layer which comprises providing a deposition solution containing a zinc compound and from 0.001 to 10 weight percent of a non-ionic surfactant additive which has the formula: ##STR4## where m is a number from 3 to 15, R is alkyl radical having from 1 to 10 carbon atoms, R 1 is a member of a group consisting of hydrogen and methyl radical, n is a number for the group from 0 to 30, and the surfactant additive has a molecular weight range of approximately 550-1500; positioning a pair of spaced apart electrodes within the deposition solution, applying an electric current to the electrodes, and depositing a non-dendritic zinc layer on the negative electrode.
Claim 2
Independent Claim
120 words
A method for forming a non-dendritic zinc layer which comprises providing a deposition solution containing a zinc compound and from 0.001 to 10 weight percent of a non-ionic surfactant additive which has the formula: ##STR4## where m is a number from 3 to 15, R is alkyl radical having from 1 to 10 carbon atoms, R 1 is a member of a group consisting of hydrogen and methyl radical, n is a number for the group from 0 to 30, and the surfactant additive has a molecular weight range of approximately 550-1500; positioning a pair of spaced apart electrodes within the deposition solution, applying an electric current to the electrodes, and depositing a non-dendritic zinc layer on the negative electrode.
Claim 3
Dependent Claim
26 words
A method for forming a non-dendritic zinc layer as in claim 1, in which there is present one percent by weight of the non-ionic surfactant additive.
Claim 4
Dependent Claim
26 words
A method for forming a non-dendritic zinc layer as in claim 1, in which there is present one-tenth percent by weight of the non-ionic surfactant additive.
Claim 5
Dependent Claim
20 words
A method for forming a non-dendritic zinc layer as in claim 1, in which the zinc compound is zinc bromide.
Claim 6
Dependent Claim
20 words
A method for forming a non-dendritic zinc layer as in claim 1, in which the zinc compound is zinc chloride.
Claim 7
Dependent Claim
83 words
A deposition solution comprising a solution containing a zinc compound, and from 0.001 to 10 weight percent of a non-ionic surfactant additive having the formula: ##STR5## where m is a number from 3 to 15, R is alkyl radical having from 1 to 10 carbon atoms, R 1 is a member of a group consisting of hydrogen and methyl radical, n is a number for the group from 0 to 30, and the surfactant additive has a molecular weight range of approximately 550-1500.
Claim 8
Dependent Claim
83 words
A deposition solution comprising a solution containing a zinc compound, and from 0.001 to 10 weight percent of a non-ionic surfactant additive having the formula: ##STR5## where m is a number from 3 to 15, R is alkyl radical having from 1 to 10 carbon atoms, R 1 is a member of a group consisting of hydrogen and methyl radical, n is a number for the group from 0 to 30, and the surfactant additive has a molecular weight range of approximately 550-1500.
Claim 9
Dependent Claim
15 words
A deposition solution as in claim 6, in which the zinc compound is zinc bromide.
Claim 10
Dependent Claim
15 words
A deposition solution as in claim 6, in which the zinc compound is zinc chloride.
Claim 11
Dependent Claim
49 words
A deposition solution as in claim 6, in which the solution contains on a weight basis 62.4% H 2 O, 15.9% Z n Br 2 , 15.9%, KBr, 3.2% Al 2 (SO 4 ) 3 and 1.6% H 3 BO 3 , and 1.0% of the non-ionic surfactant additive.
Claim 12
Dependent Claim
47 words
A deposition solution as in claim 6 in which the solution contains on a weight basis 63.3% H 2 O, 15.9% ZnBr 2 , 15.9% KBr, 3.2% Al 2 (SO 4 ) 3 and 1.6% H 3 BO 3 , and 0.1% of the non-ionic surfactant additive.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |