US4457791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New plasticizer for nitropolymers
Assignee: United States Department of the Navy
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Filing: 1982-06-25
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Granted: 1984-07-03
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Expires: 2002-06-25
Abstract
Abstract A novel composition of matter comprising a mixture of a nitrocellulose polymer and a plasticizer comprising N,N' dimethyl methylene dinitramine.
Inventors
- 👤 Robert C. Gill
- 👤 George W. Nauflett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:39
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/105
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
16 words
A composition of matter comprising a mixture of nitrocellulose and N,N'dimethyl-N,N' dinitro-methanediamine as a plasticizer therefore.
Claim 2
Dependent Claim
16 words
A composition of matter comprising a mixture of nitrocellulose and N,N'dimethyl-N,N' dinitro-methanediamine as a plasticizer therefore.
Claim 3
Dependent Claim
25 words
The composition of claim 1 where the nitrocellulose has a molecular weight in the range of 10,000 to 50,000 and nitrogen content 11% to 13%.
Claim 4
Dependent Claim
34 words
The composition of claim 2 wherein the nitrocellulose is present in an amount of 50% to 95% by weight and the N,N'-dimethyl-N,N'-dinitro methanediamine is present in an amount of 5% to 50% by weight.
Claim 5
Dependent Claim
36 words
A composition of matter comprising a mixture of nitrocellulose and N,N'-dimethyl-N,N'-dinitro-methanediamine as a plasticizer thereof, and further comprising an energetic coplasticizer selected from the group consisting of bis(2,2 dinitropropyl) formal, bis(2,2,2-trinitroethyl) formal, bis(2-fluoro-2,2-dinitroethyl)amine, and bis(2,2-fluoro-2,2-dinitroethyl) formal.
Claim 6
Dependent Claim
36 words
A composition of matter comprising a mixture of nitrocellulose and N,N'-dimethyl-N,N'-dinitro-methanediamine as a plasticizer thereof, and further comprising an energetic coplasticizer selected from the group consisting of bis(2,2 dinitropropyl) formal, bis(2,2,2-trinitroethyl) formal, bis(2-fluoro-2,2-dinitroethyl)amine, and bis(2,2-fluoro-2,2-dinitroethyl) formal.
Claim 7
Dependent Claim
27 words
The composition of claim 4 wherein the ratio of N,N' dimethyl-N,N' dinitro-methanediamine dinitramine to energetic co-plasticizer varies from about 10 to 1 to about 1 to 10.
Claim 8
Dependent Claim
24 words
The composition of claim 4 wherein the composition is filled with a high melting nitramine from the group comprising HMX (cyclotetramethylenetetranitramine) and RDX (cyclotrimethylenetrinitramine).
Claim 9
Dependent Claim
27 words
A novel composition of matter comprising a mixture of nitrocellulose, N,N'-dimethyl-N,N'-dinitro methanediamine as a plasticizer and a filler selected from the group consisting of RDX and HMX.
Claim 10
Dependent Claim
27 words
A novel composition of matter comprising a mixture of nitrocellulose, N,N'-dimethyl-N,N'-dinitro methanediamine as a plasticizer and a filler selected from the group consisting of RDX and HMX.
Claim 11
Dependent Claim
20 words
A rocket propellant comprising a mixture of nitrocellulose, N,N'-dimethyl-N,N' dinitro-methanediamine as a plasticizer and a filler comprising a cyclic nitramine.
Claim 12
Dependent Claim
20 words
A rocket propellant comprising a mixture of nitrocellulose, N,N'-dimethyl-N,N' dinitro-methanediamine as a plasticizer and a filler comprising a cyclic nitramine.
References Cited (Backward Citations)
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US4085123A
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US4288262A
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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) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |