US4119502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid zinc electroplating process and composition
Assignee: Arkema Inc
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Filing: 1977-08-17
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Granted: 1978-10-10
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Expires: 1997-08-17
Abstract
Abstract This invention relates to a method of producing lustrous to brilliant zinc electrodeposits, which comprises passing current from a zinc anode to a metal cathode for a time period sufficient to deposit a lustrous to brilliant zinc electrodeposit upon said cathode; the current passing through an aqueous acidic bath composition containing at least one zinc compound providing zinc cations for electroplating zinc, said zinc compound selected from the group consisting of zinc sulfate, zinc chloride and zinc sulfamate; chloride anions added as salts of bath compatible cations excepting ammonium; in the absence of complexing or chelating agents of organic nature; and containing as cooperating additives at least one alkyl propoxyethoxy polyether, at least one aromatic sulfonate emulsifying agent, and at least one aromatic carbonyl compound.
Inventors
- 👤 Donald A. Arcilesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
164 words
A method for producing lustrous to brilliant zinc electrodeposits which comprises passing current from a zinc anode to a metal cathode for a time period sufficient to deposit a lustrous to brilliant zinc electrodeposit upon said cathode, the current passing through an aqueous acidic bath compositing containing at least one zinc compound providing zinc cations for electroplating zinc, said zinc compound selected from the group consisting of zinc sulfate, zinc chloride and zinc sulfamate; chloride anions added as salts of bath compatible cations excepting ammonium; in the absence of complexing or chelating agents of organic nature; and containing as cooperating additives at least one alkyl propoxyethoxy polyether exhibiting the formula: C.sub.n H.sub.2n + 1 --OC.sub.3 H.sub.6).sub.m.sbsb.1 --(OC.sub.2 H.sub.4).sub.m.sbsb.2 --OH where n is an integer of from 6 to 14, m 1 is an integer of from 1 to 6, and m 2 is an integer of from 10 to 20, at least one aromatic sulfonate emulsifying agent, and at least one aromatic carbonyl compound.
Claim 2
Independent Claim
164 words
A method for producing lustrous to brilliant zinc electrodeposits which comprises passing current from a zinc anode to a metal cathode for a time period sufficient to deposit a lustrous to brilliant zinc electrodeposit upon said cathode, the current passing through an aqueous acidic bath compositing containing at least one zinc compound providing zinc cations for electroplating zinc, said zinc compound selected from the group consisting of zinc sulfate, zinc chloride and zinc sulfamate; chloride anions added as salts of bath compatible cations excepting ammonium; in the absence of complexing or chelating agents of organic nature; and containing as cooperating additives at least one alkyl propoxyethoxy polyether exhibiting the formula: C.sub.n H.sub.2n + 1 --OC.sub.3 H.sub.6).sub.m.sbsb.1 --(OC.sub.2 H.sub.4).sub.m.sbsb.2 --OH where n is an integer of from 6 to 14, m 1 is an integer of from 1 to 6, and m 2 is an integer of from 10 to 20, at least one aromatic sulfonate emulsifying agent, and at least one aromatic carbonyl compound.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein at least one zinc compound is selected from zinc sulfate, zinc chloride and mixtures thereof.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein said zinc compound is zinc sulfamate.
Claim 5
Dependent Claim
123 words
An aqueous acidic plating solution containing at least one zinc compound providing zinc cations for electroplating zinc, said zinc compound selected from the group consisting of zinc sulfate, zinc chloride and zinc sulfamate; chloride anions added as salts of bath compatible cations excepting ammonium; in the absence of complexing or chelating agents of organic nature; and containing as cooperating additives at least one alkyl propoxyethoxy polyether exhibiting the formula: C.sub.n H.sub.2n + 1 --OC.sub.3 H.sub.6).sub.m.sbsb.1 --(OC.sub.2 H.sub.4).sub.m.sbsb.2 --OH where n is an integer of from 6 to 14, m 1 is an integer of from 1 to 6, and m 2 is an integer of from 10 to 20, at least one aromatic sulfonate emulsifying agent, and at least one aromatic carbonyl compound.
Claim 6
Dependent Claim
123 words
An aqueous acidic plating solution containing at least one zinc compound providing zinc cations for electroplating zinc, said zinc compound selected from the group consisting of zinc sulfate, zinc chloride and zinc sulfamate; chloride anions added as salts of bath compatible cations excepting ammonium; in the absence of complexing or chelating agents of organic nature; and containing as cooperating additives at least one alkyl propoxyethoxy polyether exhibiting the formula: C.sub.n H.sub.2n + 1 --OC.sub.3 H.sub.6).sub.m.sbsb.1 --(OC.sub.2 H.sub.4).sub.m.sbsb.2 --OH where n is an integer of from 6 to 14, m 1 is an integer of from 1 to 6, and m 2 is an integer of from 10 to 20, at least one aromatic sulfonate emulsifying agent, and at least one aromatic carbonyl compound.
Claim 7
Dependent Claim
21 words
The composition of claim 4 wherein at least one zinc compound is selected from zinc sulfate, zinc chloride and mixtures thereof.
Claim 8
Dependent Claim
12 words
The composition of claim 4 wherein said zinc compound is zinc sulfamate.
References Cited (Backward Citations)
GB602591A
Cited
US2674619A
Cited
US3694330A
Cited
US3594291A
Cited
US3730855A
Cited
US3891520A
Cited
US3878069A
Cited
US3778359A
Cited
US3729394A
Cited
US3855085A
Cited
US3928149A
Cited
US3972788A
Cited
US4014761A
Cited
US4070256A
Cited
US4070256B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |