US4555277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion cast explosive
Assignee: ENERGY United States, Department of
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Filing: 1985-01-29
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Granted: 1985-11-26
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Expires: 2005-01-29
Abstract
Abstract Improved, multiphase, high performance, high energy, extrusion cast explosive compositions, comprising, a crystalline explosive material; an energetic liquid plasticizer; a urethane prepolymer, comprising a blend of polyvinyl formal, and polycaprolactone; a polyfunctional isocyanate; and a catalyst are disclosed. These new explosive compositions exhibit higher explosive content, a smooth detonation front, excellent stability over long periods of storage, and lower sensitivity to mechanical stimulants.
Inventors
- 👤 Kenneth J. Scribner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:11
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/80; B29B7/84; C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0075; C06B45/00; C06B45/04; C06B45/06; C06B45/10; B29L; B29L2031/00; B29L2031/777
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
33 words
A multiphase extrusion cast explosive composition comprising: a crystalline explosive material; an energetic liquid plasticizer; a urethane prepolymer mixture, comprising a blend of polyvinyl formal and polycaprolactone; a polyfunctional isocyanate; and a catalyst.
Claim 2
Dependent Claim
33 words
A multiphase extrusion cast explosive composition comprising: a crystalline explosive material; an energetic liquid plasticizer; a urethane prepolymer mixture, comprising a blend of polyvinyl formal and polycaprolactone; a polyfunctional isocyanate; and a catalyst.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein said crystalline explosive is selected from the group consisting of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine, hexahydro-1,3,5-trinitro-1,3,5-triazene, 2,2-bis[(nitro oxy)methyl]-1,3-propanediol-dinitrate, and 2,4,6-trinitro-1,3,5-benzene triamine.
Claim 4
Dependent Claim
11 words
The composition of claim 2 wherein said crystalline explosive is octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine.
Claim 5
Dependent Claim
11 words
The composition of claim 2 wherein said crystalline explosive is hexahydro-1,3,5-trinitro-1,3,5-triazene.
Claim 6
Dependent Claim
37 words
The composition of claim 1 wherein said plasticizer is selected from the group consisting of bis(2-fluoro-2,2,-dinitroethyl) formal, a mixture of bis(2,2-dinitro propyl) formal and bis(2,2-dinitro propyl) acetal, 1,2,4-butanetriol trinitrate, trimethylol ethane trinitrate, diethyleneglycol dinitrate, and ethyleneglycol dinitrate.
Claim 7
Dependent Claim
11 words
The composition of claim 5 wherein said plasticizer is bis(2-fluoro-2,2,-dinitroethyl) formal.
Claim 8
Dependent Claim
19 words
The composition of claim 5 wherein said plasticizer is a mixture of bis(2,2-dinitro propyl) formal and bis(2,2-dinitro propyl) acetal.
Claim 9
Dependent Claim
12 words
The composition of claim 5 wherein said plasticizer is trimethylol ethane trinitrate.
Claim 10
Dependent Claim
20 words
The composition of claim 1 wherein said crystalline explosive has an average particle size of less than about 100μ .
Claim 11
Dependent Claim
13 words
The composition of claim 1 wherein said cross-linking agent is a trifunctional isocyante.
Claim 12
Dependent Claim
28 words
The composition of claim 3 wherein said crystalline explosive is octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine, said plasticizer is bis(2-fluoro-2,2,-dinitroethyl) formal, said polyfunctional isocyante is trifunctional, and said catalyst is ferric acetyl acetonate.
Claim 13
Dependent Claim
41 words
The composition of claim 3 wherein said crystalline explosive is octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine, said plasticizer is trimethylol ethane trinitrate, said prepolymer is a mixture of polyvinyl formal 5/95 and polycaprolactone PCL-240, said polyfunctional isocyante is trifunctional, and said catalyst is ferric acetyl acetonate.
Claim 14
Dependent Claim
48 words
The composition of claim 3 wherein said crystalline explosive is octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine, said plasticizer is a mixture of bis(2,2-dinitro propyl) formal and bis(2,2-dinitro propyl) acetal, said prepolymer is a mixture of polyvinyl formal 5/95 and polycaprolactone PCL-240, said polyfunctional isocyante is trifunctional, and said catalyst is ferric acetyl acetonate.
Claim 15
Dependent Claim
12 words
The composition of claim 11 further including therein ammonium perchlorate and aluminum.
Claim 16
Dependent Claim
40 words
The composition of claim 4 wherein said crystalline explosive is hexahydro-1,3,5-trinitro-1,3,5-triazene, said plasticizer is bis(2-fluoro-2,2,-dinitroethyl) formal, said prepolymer is a mixture of polyvinyl formal 5/95 and polycaprolactone PCL-240, said polyfunctional isocyante is trifunctional, and said catalyst is ferric acetyl acetonate.
Claim 17
Dependent Claim
12 words
The composition of claim 15, further including therein ammonium perchlorate and aluminum.
Claim 18
Dependent Claim
48 words
The composition of claim 3 wherein said crystalline explosive is octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine, said plasticizer is a mixture of bis(2,2-dinitro propyl) formal and bis(2,2-dinitro propyl) acetal, said prepolymer is a mixture of polyvinyl formal 5/95 and polycaprolactone PCL-240, said polyfunctional isocyante is trifunctional, and said catalyst is dibutyl tin dilaurate.
Claim 19
Dependent Claim
9 words
The composition of claim 17 further comprising 2,4,6-trinitro-1,3,5-benzene triamine.
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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) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |