Patent US2393891A successfully refreshed from Google Patents.
Patent US4445948A successfully refreshed from Google Patents.
US4445948A
Expired / Lapsed
US
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Polymer modified TNT containing explosives
Assignee: United States Department of the Navy
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Filing: 1982-09-07
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Granted: 1984-05-01
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Expires: 2002-09-07
Abstract
Abstract The present invention relates to an improved explosive TNT based composit consisting of TNT, HDX, RDX, aluminum and a small amount of an elastomeric linear polymer having polar groups dissolved or dispersed throughout, said composition having improved properties. Such improved properties include: reduced cracking and exudation, improved friction sensitivity, sympathetic detonation and enhanced cook-off hazard properties.
Inventors
- 👤 Horace D. Stanton
- 👤 Russell Reed, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:47
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B21/00; C06B21/0033; C06B21/005
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
45 words
A melt cast explosive composition consisting essentially of trinitrotoluene, a cyclic nitramine explosive selected from the group consisting of cyclotrimethylenetrinitramine and cyclotetramethylenetetranitramine, aluminum powder, and a polymer selected from the group consisting of ethylene vinyl acetate copolymer and an ethylene, vinyl acetate, vinyl alcohol terpolymer.
Claim 2
Dependent Claim
45 words
A melt cast explosive composition consisting essentially of trinitrotoluene, a cyclic nitramine explosive selected from the group consisting of cyclotrimethylenetrinitramine and cyclotetramethylenetetranitramine, aluminum powder, and a polymer selected from the group consisting of ethylene vinyl acetate copolymer and an ethylene, vinyl acetate, vinyl alcohol terpolymer.
Claim 3
Dependent Claim
34 words
A composition as in claim 1 wherein said composition consists essentially of by weight about 30 percent trinitrotoluene, about 45 percent cyclic nitramine explosive, about 5 percent polymer, and about 20 percent aluminum powder.
Claim 4
Dependent Claim
26 words
A composition as in claim 1 wherein said polymer is ethylene vinyl acetate copolymer made from about 70 percent ethylene and about 30 percent vinyl acetate.
Claim 5
Dependent Claim
34 words
A composition as in claim 1 wherein said polymer is an ethylene, vinyl acetate, vinyl alcohol terpolymer, made from about 10 percent ethylene, about 85 percent vinyl acetate, and about 5 percent vinyl alcohol.
Claim 6
Independent Claim
83 words
A method of making a melt cast explosive composition comprising: (a) to molten trinitrotoluene during agitation adding aluminum powder and particles of a cyclic nitramine explosives selected from the group consisting of cyclotrimethylenetrinitramine and cyclotetramethylenetetranitramine, said cyclic nitramine explosive particles having a coating of a polymer selected from the group consisting of ethylene vinyl acetate copolymer and an ethylene, vinyl acetate, vinyl alcohol terpolymer; and (b) casting the resulting composition of step (a) and allowing it to solidify to form the explosive product.
Claim 7
Independent Claim
83 words
A method of making a melt cast explosive composition comprising: (a) to molten trinitrotoluene during agitation adding aluminum powder and particles of a cyclic nitramine explosives selected from the group consisting of cyclotrimethylenetrinitramine and cyclotetramethylenetetranitramine, said cyclic nitramine explosive particles having a coating of a polymer selected from the group consisting of ethylene vinyl acetate copolymer and an ethylene, vinyl acetate, vinyl alcohol terpolymer; and (b) casting the resulting composition of step (a) and allowing it to solidify to form the explosive product.
Claim 8
Dependent Claim
57 words
The method of claim 5 wherein said cyclic nitramine explosive particles are coated with said polymer according to the following steps: (a) dissolving said polymer in a solvent to form a solution; (b) adding said solution with stirring to a slurry of said cyclic nitramine particles in water; and (c) separating and drying polymer coated explosive particles.
Claim 9
Dependent Claim
82 words
The melt cast explosive composition of claim 1 wherein said composition is produced by: adding aluminum powder and particles of a cyclic nitramine explosive selected from the group consisting of cyclotrimethylenetrinitramine and cyclotetramethylenetetranitramine to molten trinitrotoluene during agitation, said cyclic nitramine explosive particles having a coating of a polymer selected from the group consisting of ethylene vinyl acetate copolymer and an ethylene, vinyl acetate, vinyl alcohol terpolymer; and casting the resulting composition and allowing it to solidify to form the explosive composition.
Claim 10
Independent Claim
96 words
A method of making a melt cast explosive composition comprising: (a) to molten trinitrotoluene during agitation adding a polymer in latex form selected from the group consisting of ethylene vinyl acetate copolymer and an ethylene, vinyl acetate, vinyl alcohol terpolymer; (b) to the resulting mixture of step (a) while mixing, adding aluminum powder and a cyclic nitramine explosive selected from the group consisting of cyclotrimethylenetrinitramine and cyclotetramethylenetetranitramine; and (c) subjecting the resulting mixture of step (b) to vacuum to remove water therefrom and casting the resulting composition allowing it to solidify to form the explosive product.
Claim 11
Independent Claim
96 words
A method of making a melt cast explosive composition comprising: (a) to molten trinitrotoluene during agitation adding a polymer in latex form selected from the group consisting of ethylene vinyl acetate copolymer and an ethylene, vinyl acetate, vinyl alcohol terpolymer; (b) to the resulting mixture of step (a) while mixing, adding aluminum powder and a cyclic nitramine explosive selected from the group consisting of cyclotrimethylenetrinitramine and cyclotetramethylenetetranitramine; and (c) subjecting the resulting mixture of step (b) to vacuum to remove water therefrom and casting the resulting composition allowing it to solidify to form the explosive product.
Claim 12
Dependent Claim
105 words
The melt cast explosive composition of claim 1 wherein said composition is produced by: adding a polymer in latex form selected from the group consisting of ethylene vinyl acetate copolymer and and ethylene, vinyl acetate, vinyl alcohol terpolymer to molten trinitrotoluene during agitation to form a first resulting mixture; adding aluminum powder and a cyclic nitramine explosive selected from the group consisting of cyclotrimethylenetrinitramine and cyclotetramethylenetetranitramine to the first resulting mixture while mixing to form a second resulting mixture; and subjecting the second resulting mixture to vacuum to remove water therefrom, casting the resulting composition and allowing it to solidify to form the explosive composition.
Claim 13
Dependent Claim
58 words
The melt cast explosive composition according to claim 7 wherein said cyclic nitramine explosive particles are coated with said polymer according to the following steps: dissolving said polymer in a solvent to form a solution; adding said solution with stirring to a slurry of said cyclic nitramine particles in water; and separating and drying polymer coated explosive particles.
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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) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |