US4288262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun propellants containing polyglycidyl azide polymer
Assignee: Boeing North American Inc
•
Filing: 1979-05-07
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Granted: 1981-09-08
•
Expires: 1999-05-07
Abstract
Abstract A family of gun propellants formulated with polyglycidyl azide polymer (GAP) in conjunction with nitrocellulose (NC) to provide reduced flame temperatures while providing high mass impetus.
Inventors
- 👤 Joseph E. Flanagan
- 👤 John C. Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:17
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/105; C06B25/00; C06B25/18; C06B43/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
9 words
A propellant comprising nitrocellulose (NC) and polyglycidyl azide (GAP).
Claim 2
Dependent Claim
9 words
A propellant comprising nitrocellulose (NC) and polyglycidyl azide (GAP).
Claim 3
Dependent Claim
17 words
The propellant of claim 1 further comprising from about 0.2 to about 0.5 weight percent resorcinol stabilizers.
Claim 4
Dependent Claim
42 words
The propellant of claim 1 or 2 wherein said nitrocellulose and said polyglycidyl azide are combined in a ratio which ranges from about one part NC to about two parts GAP to from about four parts NC to about one part GAP.
Claim 5
Dependent Claim
29 words
The propellant of claim 3 wherein said NC ranges from about 55 to about 85 weight percent, said GAP ranges from about 45 to about 15 weight percent GAP.
Claim 6
Dependent Claim
18 words
The propellant of claim 3 which comprises about 60 weight percent NC and about 40 weight percent GAP.
Claim 7
Dependent Claim
18 words
The propellant of claim 3 which comprises about 80 weight percent NC and about 20 weight percent GAP.
Claim 8
Dependent Claim
38 words
The propellant of claims 1 or 2 which comprises from about 10 to about 40 weight percent NC, from about 15 to about 30 weight percent GAP, and from about 20 to about 70 weight percent cyclotetramethylene tetranitramine.
Claim 9
Dependent Claim
50 words
The propellant of claims 1 or 2 which comprises from about 10 to about 40 weight percent NC, from about 15 to about 30 weight percent GAP, from about 5 to about 35 weight percent cyclotetramethylene tetranitramine (HMX), and from about 20 to about 75 weight percent triaminoguanidine nitrate (TAGN).
Claim 10
Dependent Claim
28 words
The propellant of claim 8 which comprises about 38 weight percent NC, about 20 weight percent GAP, about 20 weight percent TAGN, and about 22 weight percent HMX.
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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |