US3886173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted hexanitrobiphenyls
Assignee: United States Department of the Navy
•
Filing: 1963-12-30
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Granted: 1975-05-27
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Expires: 1983-12-30
Abstract
Abstract 1. The compound which is the dipyridinium salt of dipicric acid. 2. The compound 3,3''-dichloro-2,2'',4,4'',6,6''-hexanitrobiphenyl. 3. The compound 3,3''-diamino-2,2'',4,4'',6,6''-hexanitrobiphenyl. 4. The method of preparing the compound of claim 3 which comprises: A. FORMING THE DIPYRIDINIUM SALT OF DIPICRIC ACID BY REACTING DIPICRIC ACID WITH PYRIDINE, B. REACTING THE SAID SALT SO FORMED WITH PHOSPHORUS OXYCHLORIDE TO PRODUCE 3,3''-DICHLORO-2,2'',4,4'',6,6''-HEXANITROBIPHENYL, AND C. AMINATING SAID 3,3''-DICHLORO-2,2'',4,4'',6,6''-HEXANITROBIPHENYL AND RECOVERING THE RESULTING PRODUCT.
Inventors
- 👤 Joseph C Dacons
- 👤 Horst G Adolph
- 👤 Mortimer J Kamlet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:33
CPC Classifications
C; C06; C06B; C06B25/00; C06B25/04; C07; C07C; C07C205/00; C07C205/13; C07C205/20; C07C205/21; C07C205/24; C07C205/26; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
10 words
THE COMPOUND WHICH IS THE DIPYRIDINIUM SALT OF DIPICRIC ACID.
Claim 2
Dependent Claim
10 words
THE COMPOUND WHICH IS THE DIPYRIDINIUM SALT OF DIPICRIC ACID.
Claim 3
Dependent Claim
3 words
The compound 3,3''-dichloro-2,2'',4,4'',6,6''-hexanitrobiphenyl.
Claim 4
Dependent Claim
3 words
The compound 3,3''-dichloro-2,2'',4,4'',6,6''-hexanitrobiphenyl.
Claim 5
Dependent Claim
3 words
The compound 3,3''-diamino-2,2'',4,4'',6,6''-hexanitrobiphenyl.
Claim 6
Dependent Claim
3 words
The compound 3,3''-diamino-2,2'',4,4'',6,6''-hexanitrobiphenyl.
Claim 7
Dependent Claim
48 words
The method of preparing the Compound of claim 3 which comprises: a. forming the dipyridinium salt of dipicric acid by reacting dipicric acid with pyridine, b. reacting the said salt so formed with phosphorus oxychloride to produce 3,3''-dichloro-2,2'',4,4'',6,6''-hexanitrobiphenyl, and c. aminating said 3,3''-dichloro-2,2'',4,4'',6,6''-hexanitrobiphenyl and recovering the resulting product.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |