US4358327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas generant propellants
Assignee: United States Department of the Navy
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Filing: 1980-10-14
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Granted: 1982-11-09
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Expires: 2000-10-14
Abstract
Abstract A gas generant propellant composition having low flame temperatures comprising (a) an elastomeric binder consisting of a mixture of polyethylene capped polypropylene glycol and a dihydroxy tetrazole selected from the group having the formulas: <IMAGE> <IMAGE> (b) a curative agent such as the biuret trimer of hexamethylene diisocyanate; (c) a plasticizer agent such as 1-methyl-5 (methoxyethyl) tetrazole; (d) a coolant agent such as oxamide; and (e) a deflagrating agent selected from the group consisting of: dihydrazinium 3,6-bis(5-tetrazolyl)-1,2-dihydrotetrazine, dinitrosopentamethylenetetramine, the reaction product of glyoxal and hydrazine and the ammonium salt of 5-nitramino tetrazole.
Inventors
- 👤 Russell Reed, Jr.
- 👤 Benjamin Y. S. Lee
- 👤 Ronald A. Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:33
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B23/00; C06B23/04; C06D; C06D5/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
A gas generant propellant containing: A. a mixture of (1) polyethylene capped polypropylene glycol and a dihydroxy tetrazole selected from the group having the formulas: ##STR3## which has been cured by means of a diisocyanate; B. a plasticizer; and C. a deflagrating agent selected from the group consisting of: dihydrazinium 3,6-bis(5-tetrazolyl)-1,2-dihydrotetrazine, dinitrosopentamethylenetetramine, the reaction product of glyoxal and hydrazine and the ammonium salt of 5-nitramino tetrazole.
Claim 2
Dependent Claim
66 words
A gas generant propellant containing: A. a mixture of (1) polyethylene capped polypropylene glycol and a dihydroxy tetrazole selected from the group having the formulas: ##STR3## which has been cured by means of a diisocyanate; B. a plasticizer; and C. a deflagrating agent selected from the group consisting of: dihydrazinium 3,6-bis(5-tetrazolyl)-1,2-dihydrotetrazine, dinitrosopentamethylenetetramine, the reaction product of glyoxal and hydrazine and the ammonium salt of 5-nitramino tetrazole.
Claim 3
Dependent Claim
24 words
A gas generant propellant according to claim 1 which contains, in addition to the components set forth in claim 1, an oxamide coolant agent.
Claim 4
Dependent Claim
18 words
A gas generant composition according to claim 2 wherein said diisocyanate is the biuret trimer of hexamethylene diisocyanate.
Claim 5
Dependent Claim
19 words
A gas generant composition according to claim 3 wherein the deflagrating agent is the ammonium salt of 5-nitramino tetrazole.
Claim 6
Dependent Claim
13 words
A gas generant composition according to claim 4 wherein the plasticizer is 1-methyl-5-(methoxyethyl)tetrazole.
Claim 7
Dependent Claim
45 words
A gas generant propellant according to claim 5 which contains 2.06 wt. % of said dihydroxyethyl tetrazole, 10.62 wt. % of said glycol, 7.32 wt. % of said plasticizer, 25.00 wt. % of said deflagrating agent and 35.00 wt. % of said oxamide coolant agent.
Claim 8
Dependent Claim
51 words
A gas generant propellant according to claim 5 which contains 2.58 wt. % of said dihydroxyethyl tetrazole, 13.27 wt. % of said glycol, 9.15 wt. % of said diisocyanate, 25.00 wt. % of said plasticizer, 20.00 wt. % of said deflagrating agent and 30.00 wt. % of said oxamide coolant agent.
References Cited (Backward Citations)
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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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |