Patent US3678055A successfully refreshed from Google Patents.
US3678055A
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US
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N-2,3-dibromopropenyl pyridinium, quinolinium and isoquinolinium derivatives
Assignee: M&T Chemicals Inc
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Filing: 1969-06-12
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Granted: 1972-07-18
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Expires: 1989-06-12
Abstract
Abstract This invention is directed to N-2,3-dibromopropenyl pyridinium salts which find use in nickel electroplating baths and processes. The present invention relates to novel compositions of matter and to improved nickel electroplating baths and processes.
Inventors
- 👤 Frank Passal
- 👤 Arthur J Tomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:34
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07D213/24; C07D213/28; C07D213/30; C07D213/60; C07D213/61; C07D213/62; C07D213/70; C07D213/71; C07D213/72; C07D213/73; C07D213/78; C07D213/84; C07D213/85; C25; C25D; C25D3/00; C25D3/02; C25D3/12; C25D3/14; C25D3/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
4 words
N-2,3-dibromopropenyl 2-p-methoxybenzylamino pyridinium bromide.
Claim 2
Dependent Claim
3 words
N-2,3-dibromopropenyl 2,6-diaminopyridinium bromide.
Claim 3
Dependent Claim
3 words
N-2,3-dibromopropenyl 2-amino-6-methylpyridinium bromide.
Claim 4
Dependent Claim
22 words
The process for preparing a member selected from the group consisting of N-2,3-dibromopropenyl pyridinium bromide and N-2,3-dibromopropenyl quinolinium bromide having the formula
Claim 5
Dependent Claim
17 words
The process claimed in claim 5 wherein said bromine and said compound are contacted in stoichiometric quantities.
Claim 6
Dependent Claim
19 words
The process claimed in claim 5 wHerein said and said propargyl bromide are mixed together in substantially equimolar quantities.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |