US4054495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of nickel
Assignee: MANGRA Ltd 24 WADSWORTH ROAD PERIVALE MIDDLESEX UR6 7JD
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Filing: 1976-03-05
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Granted: 1977-10-18
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Expires: 1996-03-05
Abstract
Abstract The invention relates to aqueous solutions for bright and semi-bright nickel electroplating. The bath contains known ingredients such as nickel salts, boric acid ions together with three acetylenic compounds viz acetylenic alcohol, separated mono and/or di-alkoxylated derivative of acetylenic alcohol produced by reaction of acetylenic alcohol with ethylene oxide, propylene oxide or butylene oxide and N-di-substituted amino-propyne or its hydrochloride.
Inventors
- 👤 Malcolm John Law
- 👤 Peter James Hutchinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:48
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/12; C25D3/14; C25D3/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
75 words
An acidic aqueous solution for nickel electroplating comprising nickel sulphate, chloride and/or bromide, boric acid, at least 0.005 gms/liter of acetylene alcohol, at least 0.005 gms/liter of separated mono and/or di-alkoxylated derivative of an acetylenic alcohol produced by reaction of acetylenic alcohol with ethylene oxide, propylene oxide or butylene oxide, and at least 0.0005 gms/liter of N-di-substituted amino-propyne or its hydrochloride derivative, the total concentration of acetylenic materials being 0.01 to 0.5 grams per liter.
Claim 2
Dependent Claim
75 words
An acidic aqueous solution for nickel electroplating comprising nickel sulphate, chloride and/or bromide, boric acid, at least 0.005 gms/liter of acetylene alcohol, at least 0.005 gms/liter of separated mono and/or di-alkoxylated derivative of an acetylenic alcohol produced by reaction of acetylenic alcohol with ethylene oxide, propylene oxide or butylene oxide, and at least 0.0005 gms/liter of N-di-substituted amino-propyne or its hydrochloride derivative, the total concentration of acetylenic materials being 0.01 to 0.5 grams per liter.
Claim 3
Dependent Claim
22 words
A solution as claimed in claim 1 wherein the alcohol is butyne 1:4 diol, butyne 1-3 ol, propargyl alcohol or methyl pentynol.
Claim 4
Dependent Claim
21 words
A solution as claimed in claim 1 in which the separated derivative is mono-or di-ethoxylated butyne diol or ethoxylated propargyl alcohol.
Claim 5
Dependent Claim
39 words
A solution as claimed in claim 1 which includes naphthalene tri sulphonic acid up to 5 grams/liter or saccharin 0.5 to 5.0 grams/liter, and sodium allyl sulphonate up to 4 grams/liter or sodium vinyl sulphonate up to 4 grams/liter.
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) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |