US4049509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plating
Assignee: MacDermid Europe Ltd
•
Filing: 1976-03-29
•
Granted: 1977-09-20
•
Expires: 1996-03-29
Abstract
Abstract The mixture present after reaction of an acetylenic diol and less than an equimolar amount of an alkylene oxide or the like oxirane compound, and comprising a proportion of unreacted acetylenic diol starting material together with proportions of the mono-substituted and di-substituted reaction products is used as a nickel-plating bath additive. Preferred ranges for the reaction mixture of diol/oxirane are 1 : 0.5. to 1 : 0.95, and a preferred combination is 2-butyne-1,4-diol and propylene oxide.
Inventors
- 👤 Tony Eugene Such
- 👤 Apoloniusz Wyszynski
- 👤 Barrie Sydney James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:32
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/12; C25D3/14; C25D3/16
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
51 words
A plating additive consisting essentially of: a. about 45.5 to about 50 parts of monopropoxylated 2-butyne-1, 4diol; b. about 11.5 to about 33.5 parts of dipropoxylated 2-butyne-1, 4-diol; and c. about 42.5 to about 17 parts of 2-butyne-1, 4-diol, all parts by weight based on 100 parts of the three components.
Claim 2
Dependent Claim
51 words
A plating additive consisting essentially of: a. about 45.5 to about 50 parts of monopropoxylated 2-butyne-1, 4diol; b. about 11.5 to about 33.5 parts of dipropoxylated 2-butyne-1, 4-diol; and c. about 42.5 to about 17 parts of 2-butyne-1, 4-diol, all parts by weight based on 100 parts of the three components.
Claim 3
Dependent Claim
35 words
In an acidic aqueous nickel plating bath containing at least one dissolved nickel salt and at least one additive, the improvement comprising: said at least one additive being an additive as defined in claim 1.
Claim 4
Dependent Claim
15 words
The acidic aqueous nickel plating bath of claim 2 and further comprising a sulpho-oxygen brightener.
Claim 5
Dependent Claim
27 words
The acid aqueous plating bath of claim 3 and further comprising a depolarizing agent selected from the group consisting of thiocarboxylic acids and water soluble salts thereof.
Claim 6
Dependent Claim
26 words
The acidic aqueous nickel plating bath of claim 4 wherein the sulpho-oxygen brightener is selected from the group consisting of sulphonates sulphimides, sulphonamides and mixtures thereof.
Claim 7
Dependent Claim
18 words
A composition for a plating bath, comprising: a plating additive as defined in claim 1; and o-mercaptobenzoic acid.
Claim 8
Dependent Claim
11 words
The composition of claim 6 and further comprising a sulpho-oxygen brightener.
Claim 9
Dependent Claim
38 words
The additive of claim 1 containing a three component mixture consisting essentially of about 50 parts of component (a), about 23.5 to about 28.5 parts of component (b) and about 26.5 to about 21.5 parts of component (c).
Claim 10
Dependent Claim
32 words
The additive of claim 1 containing a three component mixture consisting essentially of about 50 parts of component (a), about 26 parts of component (b) and about 23.5 parts of component (c).
Claim 11
Dependent Claim
19 words
A composition for a plating bath comprising: a plating additive as defined in claim 1 dissolved in a solvent.
Claim 12
Dependent Claim
46 words
In a process for electrodepositing nickel from an acidic aqueous bath containing at least one dissolved nickel salt and at least one additive, the improvement comprising: effecting said electrodeposition with a bath wherein said at least one additive is an additive as defined in claim 1.
Claim 13
Dependent Claim
16 words
The acid aqueous nickel plating bath of claim 5 wherein the depolarizing agent is o-mercaptobenzoic acid.
References Cited (Backward Citations)
US2863926A
Cited
US3366557A
Cited
GB970268A
Cited
GB970269A
Cited
US3041256A
Cited
US3268593A
Cited
US3644535A
Cited
US3839465A
Cited
US3711384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |