US4421578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Castable high explosive compositions of low sensitivity
Assignee: United States Department of the Army
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Filing: 1982-07-19
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Granted: 1983-12-20
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Expires: 2002-07-19
Abstract
Abstract A high explosive composition comprising 2 to 57% ammonium nitrate 2 to 50% ethylenediamine dinitrate 1 to 10% potassium nitrate 1 to 80% nitroguanidine These explosive compositions possess physical and explosive properties comparable to those of explosive compositions based on TNT (2,4,6-trinitrotoluene); but they are relatively insensitive and less costly to manufacture and can be loaded into projectiles with existing melt/cast loading facilities.
Inventors
- 👤 Wallace E. Voreck, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:13
CPC Classifications
C; C06; C06B; C06B31/00; C06B31/28; C06B31/32; C06B25/00; C06B25/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
38 words
A castable high explosive composition comprising a mixture of about from: 2 to 57 wt. % ammonium nitrate 2 to 50 wt. % ethylenediamine dinitrate 1 to 10 wt % potassium nitrate 1 to 80 st % nitroguanidine.
Claim 2
Dependent Claim
38 words
A castable high explosive composition comprising a mixture of about from: 2 to 57 wt. % ammonium nitrate 2 to 50 wt. % ethylenediamine dinitrate 1 to 10 wt % potassium nitrate 1 to 80 st % nitroguanidine.
Claim 3
Dependent Claim
28 words
The explosive composition according to claim 1, wherein the amount of potassium nitrate is approximately 15% based on the combined weight of the ammonium nitrate and potassium nitrate.
Claim 4
Dependent Claim
23 words
The explosive composition according to claim 1, comprising a eutectic mixture of 57% ammonium nitrate 25% ethylenediamine dinitrate 10% potassium nitrate 8% nitroguanidine
Claim 5
Dependent Claim
23 words
The explosive composition according to claim 1, comprising a mixture of about 39% ammonium nitrate 46% ethylenediamine dinitrate 7% potassium nitrate 8% nitroguanidine.
Claim 6
Dependent Claim
41 words
The explosive composition of claim 1, 2 or 3, which additionally contains up to about 95% by weight of said mixture of at least one crystalline high explosive selected from the group consisting of 1,3,5-trinitro-1,3,5-triazacyclohexane, 1,3,5,7-tetranitro-1,3,5,7-tetraazacylooctane, nitroguanidine, pentaerythritol tetranitrate and 2,4,6-trinitrotoluene.
Claim 7
Dependent Claim
20 words
The explosive composition of claim 4, which additionally contains up to about 25% powdered aluminum by weight of said mixture.
Claim 8
Dependent Claim
9 words
A cast explosive of the composition of claim 1.
Claim 9
Dependent Claim
9 words
A pressed explosive of the composition of claim 1.
Claim 10
Dependent Claim
41 words
A process for preparing a composition according to claim 1, which comprises slowly adding ethylenediamine to a mixture including aqueous nitric acid, ammonium nitrate and potassium nitrate, to form ethylenediamine dinitrate, adding nitroguanidine and removing water from the composition by distillation.
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) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |