US4293352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degradable binder explosives
Assignee: United States Department of the Navy
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Filing: 1979-08-23
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Granted: 1981-10-06
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Expires: 1999-08-23
Abstract
Abstract Explosive compositions containing a polyurethane binder which will degradepon contact with dilute mineral acids or aqueous ammonia.
Inventors
- 👤 Benjamin Y. S. Lee
- 👤 Russell Reed, Jr.
- 👤 Roger L. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:23
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4244
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
An easily degradable explosive composition containing about 82 percent explosive solids and about 18 weight percent of a polyurethane binder made from the reaction of from 16.56 weight percent polyester and from 1.44 weight percent of said curative; said binder being prepared by reaction of a hydroxyl terminated polyester having a functionality of 2.33 with a curative comprising Lysine diisocyanate methyl ester; and said binder being degradable in aqueous ammonia or dilute acid, yielding reusable explosive solids and non-toxic binder-degradation products, and being not degradable upon contact with water.
Claim 2
Dependent Claim
89 words
An easily degradable explosive composition containing about 82 percent explosive solids and about 18 weight percent of a polyurethane binder made from the reaction of from 16.56 weight percent polyester and from 1.44 weight percent of said curative; said binder being prepared by reaction of a hydroxyl terminated polyester having a functionality of 2.33 with a curative comprising Lysine diisocyanate methyl ester; and said binder being degradable in aqueous ammonia or dilute acid, yielding reusable explosive solids and non-toxic binder-degradation products, and being not degradable upon contact with water.
References Cited (Backward Citations)
US3132976A
Cited
US3778320A
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US3909497A
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US3968723A
Cited
US4018636A
Cited
US4098627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |