US4090894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moldable ethylene/vinyl acetate copolymer
Assignee: United States Department of the Navy
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Filing: 1977-03-21
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Granted: 1978-05-23
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Expires: 1997-03-21
Abstract
Abstract Ethylene vinyl acetate copolymer resins are used as desensitizers and binders of moldable explosive compositions of cyclic nitramines, such as RDX. 82 - 98 weight percent binder is used and various ratios of ethylene to vinyl acetate moieties in the resin are used to modify molding and extrusion properties.
Inventors
- 👤 Russell Reed
- 👤 Horace D. Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
56 words
An explosive composition consisting essentially of from 2 to 18 weight percent of a pliable, adhesive, desensitizing ethylene/vinyl acetate copolymer having a ratio of ethylene groups to vinyl acetate groups in the range of from 70:30 to 40:60; and from 82 to 98 weight percent cyclic nitramine explosive; said composition having the property of being moldable.
Claim 2
Dependent Claim
56 words
An explosive composition consisting essentially of from 2 to 18 weight percent of a pliable, adhesive, desensitizing ethylene/vinyl acetate copolymer having a ratio of ethylene groups to vinyl acetate groups in the range of from 70:30 to 40:60; and from 82 to 98 weight percent cyclic nitramine explosive; said composition having the property of being moldable.
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein said cyclic nitramine explosive is cyclotrimethylenetrinitramine.
Claim 4
Dependent Claim
24 words
The composition of claim 2 consisting essentially of 9 weight percent ethylene/vinyl acetate copolymer having approximately 30% vinyl acetate moisties and 70% ethylene moieties.
Claim 5
Dependent Claim
20 words
The composition of claim 1 wherein said ethylene/vinyl acetate copolymer has approximately 60% vinyl acetate moieties and 40% ethylene moieties.
Claim 6
Dependent Claim
18 words
The composition of claim 4 having approximately 9 weight percent ethylene/vinyl acetate copolymer and 91 weight percent cyclotrimethylenetrinitramine.
Claim 7
Dependent Claim
54 words
In a method of loading an explosive composition, the improvement residing in using, as the explosive composition, a composition consisting essentially of from 2 to 18 weight percent of a pliable, adhesive, desensitizing ethylene/vinyl acetate copolymer and from 82 to 98 weight percent cyclic nitramine explosive and pressing the composition into a desired shape.
Claim 8
Dependent Claim
54 words
In a method of loading an explosive composition, the improvement residing in using, as the explosive composition, a composition consisting essentially of from 2 to 18 weight percent of a pliable, adhesive, desensitizing ethylene/vinyl acetate copolymer and from 82 to 98 weight percent cyclic nitramine explosive and pressing the composition into a desired shape.
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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |