US4070212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High performance fast burning solid propellant
Assignee: ATK Launch Systems LLC
•
Filing: 1964-11-23
•
Granted: 1978-01-24
•
Expires: 1984-11-23
Abstract
Abstract 1. A solid composite propellant consisting of 7% to 15% of a carboxyl-terminated butadiene polymer binder, 66% to 82% of ammonium perchlorate, greater than 0% to 18% of aluminum and greater than 0% to 8% of n-butyl ferrocene as a burning rate catalyst, the ingredient amounts being in weight per cent, and wherein the particle size of the ammonium perchlorate is greater than 0 but less than 3 microns in size.
Inventors
- 👤 Johnny R. Mackey
- 👤 Earl T. Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:43
CPC Classifications
C; C06; C06B; C06B45/00; C06B29/00; C06B29/22; C06B45/04; C06B45/06; C06B45/10; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/112
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
A solid composite propellant consisting of 7% to 15% of a carboxyl-terminated butadiene polymer binder, 66% to 82% of ammonium perchlorate, greater than 0% to 18% of aluminum and greater than 0% to 8% of n-butyl ferrocene as a burning rate catalyst, the ingredient amounts being in weight percent, and wherein the particle size of the ammonium perchlorate is greater than 0 but less than 3 microns in size.
Claim 2
Dependent Claim
69 words
A solid composite propellant consisting of 7% to 15% of a carboxyl-terminated butadiene polymer binder, 66% to 82% of ammonium perchlorate, greater than 0% to 18% of aluminum and greater than 0% to 8% of n-butyl ferrocene as a burning rate catalyst, the ingredient amounts being in weight percent, and wherein the particle size of the ammonium perchlorate is greater than 0 but less than 3 microns in size.
Claim 3
Dependent Claim
56 words
In a method for increasing the burning rate of a composite solid propellant comprising the mixture of a carboxy-terminated butadiene polymer binder, a fuel, n-butyl ferrocene as a burning rate catalyst and an oxidizer, the improvement comprising using an oxidizer that has been ground to a particle size greater than 0 but less than 3 microns.
Claim 4
Dependent Claim
56 words
In a method for increasing the burning rate of a composite solid propellant comprising the mixture of a carboxy-terminated butadiene polymer binder, a fuel, n-butyl ferrocene as a burning rate catalyst and an oxidizer, the improvement comprising using an oxidizer that has been ground to a particle size greater than 0 but less than 3 microns.
Claim 5
Dependent Claim
18 words
A method, as in claim 2, wherein the particle size is varied to obtain the burning rate desired.
Claim 6
Independent Claim
72 words
A method for producing a high burning rate composite solid propellant, consisting of milling a mixture of carboxyl-terminated butadiene polymer and ammonium perchlorate through a 3-roll dispersion mill until the ammonium perchlorate in the mixture has achieved a particle size greater than 0 but less than 3 microns, adding aluminum and n-butyl ferrocene as a liquid burning rate catalyst, blending the mixture to yield a homogeneous propellant, and then curing said propellant.
Claim 7
Independent Claim
72 words
A method for producing a high burning rate composite solid propellant, consisting of milling a mixture of carboxyl-terminated butadiene polymer and ammonium perchlorate through a 3-roll dispersion mill until the ammonium perchlorate in the mixture has achieved a particle size greater than 0 but less than 3 microns, adding aluminum and n-butyl ferrocene as a liquid burning rate catalyst, blending the mixture to yield a homogeneous propellant, and then curing said propellant.
References Cited (Backward Citations)
US2990263A
Cited
US3022149A
Cited
US3109761A
Cited
US3044910A
Cited
US3022206A
Cited
US3087844A
Cited
US3255281A
Cited
US3386869A
Cited
US3447981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |