Patent US3976522A successfully refreshed from Google Patents.
US3976522A
Expired / Lapsed
US
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Nitroplasticized amine perchlorate flexible explosives
Assignee: United States Department of the Navy
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Filing: 1971-07-26
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Granted: 1976-08-24
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Expires: 1991-07-26
Abstract
Abstract A sheet explosive employing a fine particle size filler in which a portion thereof is replaced by a plasticizer diluent providing castability at moderate temperatures while maintaining high rates of detonation. The material is crosslinked under mild conditions to eliminate thermoplasticity.
Inventors
- 👤 Julius Rothenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:44
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B25/00; C06B25/34; C06B45/105; Y; Y10; Y10S; Y10S149/00; Y10S149/119
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A castable, thermally stable, non-thermoplastic flexible explosive comprising an explosive filler consisting of a mixture of methylamine perchlorate and cyclotrimethylene trinitramine and a binder, said binder consisting of a mixture of a readily curable prepolymer from the group consisting of a polyurethane, a copolymer of dinitroropyl acrylate and a copolymer of hydroxyalkylacrylates, a crosslinking agent and a curing agent.
Claim 2
Dependent Claim
59 words
A castable, thermally stable, non-thermoplastic flexible explosive comprising an explosive filler consisting of a mixture of methylamine perchlorate and cyclotrimethylene trinitramine and a binder, said binder consisting of a mixture of a readily curable prepolymer from the group consisting of a polyurethane, a copolymer of dinitroropyl acrylate and a copolymer of hydroxyalkylacrylates, a crosslinking agent and a curing agent.
Claim 3
Dependent Claim
21 words
The composition recited in claim 1 wherein said binder includes an energetic plasticizer diluent of a mixture of bis(2,2-dinitropropyl)formal and bis(2,2-dinitropropyl)acetal.
Claim 4
Dependent Claim
21 words
The composition recited in claim 1 wherein said mixture is from about 55% to about 75% by weight of said composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |