Patent US4033798A successfully refreshed from Google Patents.
US4033798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complex of nitrocellulose as propellant
Assignee: United States Department of the Army
•
Filing: 1976-03-29
•
Granted: 1977-07-05
•
Expires: 1996-03-29
Abstract
Abstract A solution comprising nitrocellulose and a nitramine consisting of either RDX (Hexahydro-1,3,5-trinitro-s-triazine), HMX (Octahydro-1,3,5,7-tetranitro-s-tetrazine), or mixtures thereof is dissolved in a volatile, liquid acetate ester, evaporated at room temperature to form a film, and then dried. The resulting material is a homogeneous, hydrogen-bonded complex of nitrocellulose and the nitramine, useful as an energetic propellant.
Inventors
- 👤 Bruce W. Brodman
- 👤 Michael P. Devine
- 👤 Stuart Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:34
CPC Classifications
C; C06; C06B; C06B25/00; C06B25/34; C06B21/00; C06B21/0033; C06B21/0066; C06B25/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
19 words
A chemical complex comprising nitrocellulose hydrogen-bonded to a member selected from the group of hexahydro-1,3,5-trinitro-s-triazine, octahydro-1,3,5,7-tetranitro-s-tetrazine, and mixtures thereof.
Claim 2
Dependent Claim
19 words
A chemical complex comprising nitrocellulose hydrogen-bonded to a member selected from the group of hexahydro-1,3,5-trinitro-s-triazine, octahydro-1,3,5,7-tetranitro-s-tetrazine, and mixtures thereof.
Claim 3
Dependent Claim
29 words
A chemical complex according to claim 1, wherein said member consists of hexahydro-1,3,5-trinitro-s-triazine, said complex comprising by weight about 15- 68% hexahydro-1,3,5-trinitro-s-triazine and about 85- 32% by weight nitrocellulose.
Claim 4
Dependent Claim
30 words
A chemical complex according to claim 1, wherein said member consists of octahydro-1,3,5,7-tetranitro-s-tetazine, said complex comprising by weight about 20- 74% octahydro -1,3,5,7-tetranitro-s-tetrazine and about 80- 26% by weight nitrocellulose.
Claim 5
Dependent Claim
25 words
A chemical complex according to claim 1, wherein said complex comprises by weight about 20-30% of said member, and about 80-70% by weight of nitrocellulose.
Claim 6
Dependent Claim
22 words
A chemical complex according to claim 1, wherein said nitrocellulose has a nitrogen content by weight in the range of about 5-13.5%.
Claim 7
Dependent Claim
22 words
A chemical complex according to claim 1, wherein said nitrocellulose has a nitrogen content by weight in the range of about 12-13%.
Claim 8
Dependent Claim
34 words
A chemical complex comprising nitrocellulose hydrogen-bonded to a member selected from the group consisting of hexahydro-1,3,5-trinitro-s-triazine, octahydro-1,3,5,7-tetranitro-s-tetrazine, and mixtures thereof, said complex comprising the product of evaporating a solution containing nitrocellulose and said member.
Claim 9
Dependent Claim
34 words
A chemical complex comprising nitrocellulose hydrogen-bonded to a member selected from the group consisting of hexahydro-1,3,5-trinitro-s-triazine, octahydro-1,3,5,7-tetranitro-s-tetrazine, and mixtures thereof, said complex comprising the product of evaporating a solution containing nitrocellulose and said member.
References Cited (Backward Citations)
US3925125A
Cited
US3943017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |