IP Library Granted Patent US 8,575,074
Granted Patent B2
US 8,575,074 · App. 13/153,972 · Granted Nov 5, 2013

Insensitive explosive composition and method of fracturing rock using an extrudable form of the composition

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Quick Facts
Patent No.
US 8,575,074
App. No.
13/153,972
Granted
Nov 5, 2013
Kind
B2
Abstract

Insensitive explosive compositions were prepared by reacting di-isocyanate and/or poly-isocyanate monomers with an explosive diamine monomer. Prior to a final cure, the compositions are extrudable. The di-isocyanate monomers tend to produce tough, rubbery materials while polyfunctional monomers (i.e. having more than two isocyanate groups) tend to form rigid products. The extrudable form of the composition may be used in a variety of applications including rock fracturing.

Claims (13)

1. An insensitive explosive composition comprising an explosive oligomeric or polymeric reaction product of an explosive diamine monomer with a di-isocyanate monomer, a poly-isocyanate monomer, or mixtures thereof.

2. The insensitive explosive composition of claim 1 , wherein said di-isocyanate monomer is selected from an alkyl di-isocyanate monomer or an aryl di-isocyanate monomer, and wherein said poly-isocyanate monomer is selected from an alkyl poly-isocyanate monomer or an aryl poly-isocyanate monomer.

3. The insensitive explosive composition of claim 1 , wherein said insensitive explosive composition is extrudable.

4. The insensitive explosive composition of claim 1 , wherein said insensitive explosive composition is a cured, rubbery, tough, polymer.

5. The insensitive explosive composition of claim 1 , wherein said insensitive explosive composition is a rigid polymer.

6. The insensitive explosive composition of claim 2 , wherein said alkyl di-isocyanate monomer is 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl di-isocyanate.

7. The insensitive explosive composition of claim 2 , wherein said aryl di-isocyanate monomer is selected from 4-di-isocyanato-1-methyl-benzene, 1-isocyanato-4-[(4-isocyanatophenyl)methyl]benzene, 1-isocyanato-2-[(2-isocyanatophenyl)methyl]benzene, 1-isocyanato-2-[(4-isocyanatophenyl)methyl]benzene, or di-isocyanato-containing isomers thereof.

8. The insensitive explosive composition of claim 1 , wherein said explosive diamine monomer is 4,4′-diamino-3,3′-azoxyfurazan.

9. The insensitive explosive composition of claim 8 , wherein said insensitive explosive composition is extrudable.

10. The insensitive explosive composition of claim 8 , wherein the di-isocyanate monomer is 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl-di-isocyanate.

11. The insensitive explosive composition of claim 1 , wherein said explosive reaction product is a product of a condensation reaction of 4,4′diamino-3,3′-azoxyfurazan with a di-isocyanate monomer selected from 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl-di-isocyanate, 2,4-diisocyanato-1-methyl benzene, 1-isocyanato-4-[(4-isocyanatophenyl)methyl]benzene, 1-isocyanato-2-[(2-isocyanatophenyl)methyl]benzene, or 1-isocyanato-2-[(4-isocyanatophenyl)methyl]benzene.

12. The insensitive explosive composition of claim 1 , wherein the explosive reaction product is a product of a condensation of an explosive diamine monomer, a glycidyl azide polymer, and an isocyanate-containing monomer selected from a di-isocyanate monomer, a poly-isocyanate monomer, or mixtures thereof.

13. A polymer comprising 4,4-diamino-3,3′-azoxyfurazan monomer and a monomer selected from a di-isocyanate monomer, a poly-isocyanate monomer, or mixtures thereof.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 7, 2018
From: LOS ALAMOS NATIONAL SECURITY, LLC
To: TRIAD NATIONAL SECURITY, LLC
Reel/Frame 047447/0201 →
CONFIRMATORY LICENSE Recorded Oct 6, 2011
From: LOS ALAMOS NATIONAL SECURITY
To: U.S. DEPARTMENT OF ENERGY
Reel/Frame 027028/0832 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 6, 2011
From: DAVIS, LLOYD L.
To: LOS ALAMOS NATIONAL SECURITY, LLC
Reel/Frame 026395/0598 →