US4011114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linked nitrocellulose propellant formulation
Assignee: United States Department of the Navy
•
Filing: 1964-04-09
•
Granted: 1977-03-08
•
Expires: 1984-04-09
Abstract
Abstract 1. A propellant formulation comprising the following ingredients: Nitrocellulose Prepolymer of polyglycoladipate and 2,4-tolylene diisocyanate Nitroglycerin Cyclotetramethylenetetranitramine Aluminum 2-Nitrodiphenylamine. 6. A propellant composition consisting essentially of: The prepolymer of polyglycoladipate and 2,4-tolylene diisocyanate; Nitrocellulose, and Nitroglycerin.
Inventors
- 👤 John C. Allabashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:19
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0058; C06B25/00; C06B25/18; C06B25/24; C06B25/26; C06B25/34; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6484
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
18 words
A propellant formulation comprising the following ingredients: Nitrocellulose Prepolymer of polyglycoladipate and 2,4-tolylene diisocyanate Nitroglycerin Cyclotetramethylenetetranitramine Aluminum 2-Nitrodiphenylamine.
Claim 2
Dependent Claim
18 words
A propellant formulation comprising the following ingredients: Nitrocellulose Prepolymer of polyglycoladipate and 2,4-tolylene diisocyanate Nitroglycerin Cyclotetramethylenetetranitramine Aluminum 2-Nitrodiphenylamine.
Claim 3
Dependent Claim
31 words
A propellant formulation comprising the following ingredients: ______________________________________
Ingredients Percent by weight
______________________________________
Nitrocellulose 9
Prepolymer of polyglycoladipate and
2,4-tolylene diisocyanate
6
Nitroglycerin 26
Cyclotetramethylenetetranitramine
40
Aluminum 18
2-Nitrodiphenylamine 1.
______________________________________
Claim 4
Dependent Claim
31 words
A propellant formulation comprising the following ingredients: ______________________________________
Ingredients Percent by weight
______________________________________
Nitrocellulose 9
Prepolymer of polyglycoladipate and
2,4-tolylene diisocyanate
6
Nitroglycerin 26
Cyclotetramethylenetetranitramine
40
Aluminum 18
2-Nitrodiphenylamine 1.
______________________________________
Claim 5
Independent Claim
84 words
A method for the preparation of a crosslinked propellant which comprises the following steps: 1. Dissolving polyglycoladipate and tolylene diisocyanate in nitroglycerin containing 2-nitrodiphenylamine; 2. Evacuating the resultant solution to remove air; 3. Mixing dry nitrocellulose into said solution until a viscous mixture results; 4. Adding cyclotetramethylenetetranitramine to said mixture and stirring thoroughly; 5. Stirring aluminum into the mixture for about 15 minutes until a slurry results; 6. Vacuum casting said slurry into molds; and 7. Curing for about five days at 120° F.
Claim 6
Independent Claim
84 words
A method for the preparation of a crosslinked propellant which comprises the following steps: 1. Dissolving polyglycoladipate and tolylene diisocyanate in nitroglycerin containing 2-nitrodiphenylamine; 2. Evacuating the resultant solution to remove air; 3. Mixing dry nitrocellulose into said solution until a viscous mixture results; 4. Adding cyclotetramethylenetetranitramine to said mixture and stirring thoroughly; 5. Stirring aluminum into the mixture for about 15 minutes until a slurry results; 6. Vacuum casting said slurry into molds; and 7. Curing for about five days at 120° F.
Claim 7
Independent Claim
63 words
A method for the preparation of a propellant grain which comprises 1. reacting polyglycoladipate and tolylene diisocyanate to form a prepolymer; 2. dissolving said prepolymer in nitroglycerin containing 2-nitrodiphenylamine; 3. mixing into the resultant solution nitrocellulose, cyclotetramethylenetetranitramine, and aluminum in the order named until a homogenous slurry results; 4. casting said slurry into molds; and 5. curing for five days at 120° F.
Claim 8
Independent Claim
63 words
A method for the preparation of a propellant grain which comprises 1. reacting polyglycoladipate and tolylene diisocyanate to form a prepolymer; 2. dissolving said prepolymer in nitroglycerin containing 2-nitrodiphenylamine; 3. mixing into the resultant solution nitrocellulose, cyclotetramethylenetetranitramine, and aluminum in the order named until a homogenous slurry results; 4. casting said slurry into molds; and 5. curing for five days at 120° F.
Claim 9
Independent Claim
29 words
A method for the preparation of crosslinked nitrocellulose which comprises: reacting the prepolymer of polyglycoladipate and 2,4-tolylene diisocyanate with nitrocellulose and nitroglycerin at ambient temperature for about three minutes.
Claim 10
Independent Claim
29 words
A method for the preparation of crosslinked nitrocellulose which comprises: reacting the prepolymer of polyglycoladipate and 2,4-tolylene diisocyanate with nitrocellulose and nitroglycerin at ambient temperature for about three minutes.
Claim 11
Dependent Claim
16 words
A propellant composition consisting essentially of: the prepolymer of polyglycoladipate and 2,4-tolylene diisocyanate; nitrocellulose, and nitroglycerin.
Claim 12
Dependent Claim
16 words
A propellant composition consisting essentially of: the prepolymer of polyglycoladipate and 2,4-tolylene diisocyanate; nitrocellulose, and nitroglycerin.
Claim 13
Dependent Claim
24 words
A propellant composition consisting essentially of: ______________________________________
Ingredients Percent by weight
______________________________________
Prepolymer of polyglycoladipate and
2,4-tolylene diisocyanate and
nitrocellulose; 35
Nitroglycerin 65.
______________________________________
Claim 14
Dependent Claim
24 words
A propellant composition consisting essentially of: ______________________________________
Ingredients Percent by weight
______________________________________
Prepolymer of polyglycoladipate and
2,4-tolylene diisocyanate and
nitrocellulose; 35
Nitroglycerin 65.
______________________________________
Claim 15
Dependent Claim
23 words
A composition comprising a crosslinking agent consisting of a prepolymer which is a solvent for nitrocellulose and miscible with nitroglycerin; nitrocellulose; and, nitroglycerin.
Claim 16
Dependent Claim
23 words
A composition comprising a crosslinking agent consisting of a prepolymer which is a solvent for nitrocellulose and miscible with nitroglycerin; nitrocellulose; and, nitroglycerin.
References Cited (Backward Citations)
US3036939A
Cited
US3002830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |