US4134802A
Expired / Lapsed
US
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Electrolyte and method for electrodepositing bright metal deposits
Assignee: Oxy Metal Industries Corp
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Filing: 1977-10-03
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Granted: 1979-01-16
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Expires: 1997-10-03
Abstract
Abstract The present invention is directed to an aqueous bath for the electrodeposition of bright metal deposits, and is more particularly concerned with a bath composition which provides upon the basis metal an electrodeposit having improved brightness, superior adhesion to the substrate, and as well, a condition of ductility markedly better than that obtained from certain prior art baths. The electroplating bath composition of this invention includes therein a sulfamalkylated polyamine which is a reaction product containing nitrogen substituted alkyl sulfamate units represented by the general formulae: <IMAGE> or <IMAGE> WHERE M = H, Li, Na, K or NH4, R = aryl, alkyl of 1 - 4 carbons, N = 2 TO 3, M = 0 TO 3, AND X = 7 TO 2400.
Inventors
- 👤 Roy W. Herr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:08
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22; C25D3/38; C25D3/56; C25D3/562
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
49 words
An aqueous bath for the electrodeposition of bright zinc, copper, nickel-iron, and other metallic materials upon a substrate, which comprises a source of zinc, copper, nickel and iron ions or other metallic ions, and a sulfamalkylated polyamine for improving the brightness, ductility and leveling properties of the metallic electrodeposit.
Claim 2
Dependent Claim
49 words
An aqueous bath for the electrodeposition of bright zinc, copper, nickel-iron, and other metallic materials upon a substrate, which comprises a source of zinc, copper, nickel and iron ions or other metallic ions, and a sulfamalkylated polyamine for improving the brightness, ductility and leveling properties of the metallic electrodeposit.
Claim 3
Dependent Claim
28 words
A process for producing a bright metallic finish upon a substrate, comprising passing current through the bath of claim 1, and electrodepositing said finish upon a cathode surface.
Claim 4
Dependent Claim
85 words
An aqueous bath for the electrodeposition of bright zinc, copper, nickel-iron and other metallic materials upon a substrate, which comprises a source of zinc, copper, nickel and iron ions or other metallic ions, and at least 0.0001 g/l of a reaction product of a polyamine having the general empirical formula --[C 2 H 5 N] x --, an aldehyde and sulfamic acid, said reaction product containing nitrogen substituted alkyl sulfamate groups as an integral part of the polymer chain and X = 7 to 2400.
Claim 5
Dependent Claim
85 words
An aqueous bath for the electrodeposition of bright zinc, copper, nickel-iron and other metallic materials upon a substrate, which comprises a source of zinc, copper, nickel and iron ions or other metallic ions, and at least 0.0001 g/l of a reaction product of a polyamine having the general empirical formula --[C 2 H 5 N] x --, an aldehyde and sulfamic acid, said reaction product containing nitrogen substituted alkyl sulfamate groups as an integral part of the polymer chain and X = 7 to 2400.
Claim 6
Dependent Claim
36 words
An aqueous bath as defined in claim 3, in which the nitrogen substituted alkyl sulfamate of the reaction product is represented by the formula: ##STR7## where, M = H, Li, Na, K or NH 4 .
Claim 7
Dependent Claim
28 words
A process for producing a bright metallic finish upon a substrate, comprising passing current through the bath of claim 3, and electrodepositing said finish upon a cathode surface.
Claim 8
Dependent Claim
73 words
An aqueous bath for the electrodeposition of bright nickel-iron upon a substrate, which comprises a source of nickel and iron ions, about 10 to 100 g/l of a complexing agent, about 30 to 60 g/l of a buffering agent, approximately 0.5 to 10 g/l of a brightening agent, and a sulfamalkylated polyamine present in an amount of about 0.0001 to 1.0 g/l for improving the brightness, ductility and leveling properties of the electrodeposit.
Claim 9
Dependent Claim
73 words
An aqueous bath for the electrodeposition of bright nickel-iron upon a substrate, which comprises a source of nickel and iron ions, about 10 to 100 g/l of a complexing agent, about 30 to 60 g/l of a buffering agent, approximately 0.5 to 10 g/l of a brightening agent, and a sulfamalkylated polyamine present in an amount of about 0.0001 to 1.0 g/l for improving the brightness, ductility and leveling properties of the electrodeposit.
Claim 10
Dependent Claim
28 words
A process for producing a bright metallic finish upon a substrate, comprising passing current through the bath of claim 6, and electrodepositing said finish upon a cathode surface.
References Cited (Backward Citations)
DE819404C
Cited
US4022676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |