US3770524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite propellants containing polymers of trinitratopentaerythrityl acrylate
Assignee: Rohm and Haas Co
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Filing: 1958-10-22
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Granted: 1973-11-06
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Expires: 1978-10-22
Abstract
Abstract Polymerizable combustible compositions, suitable for the manufacture of propellants, consisting essentially of a mixture of (1) 14 to 31 parts of trinitratopentaerythrityl acrylate, (2) 1 to 3 parts of a polymerizable monoacrylic alkyl ester having an alkyl group of four to twelve carbon atoms, (3) 10 to 26 parts of a plasticizer for poly(trinitratopentaerythrityl acrylate), said plasticizer consisting essentially of a major proportion of compounds containing nitro groups, (4) 0.1 to 2.5 parts of a soluble multiply olefinically unsaturated polyester, (5) 30 to 65 parts of a solid powdered oxidizer and (6) 0 to 25 parts of a finely particled, readily combustible solid selected from the group consisting of carbon, aluminum, magnesium, zinc, zirconium and boron.
Inventors
- 👤 R Walker
- 👤 P Gehlhaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:45
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/105
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
Polymerizable combustible compositions, suitable for the manufacture of propellants, consisting essentially of a mixture of (1) 14 to 31 parts of trinitratopentaerythrityl acrylate, (2) 1 to 3 parts of a polymerizable monoacrylic alkyl ester having an alkyl group of four to twelve carbon atoms, (3) 10 to 26 parts of a liquid plasticizer for poly(trinitratopentaerythrityl acrylate), said plasticizer consisting essentially of a major proportion of compounds containing nitro groups, (4) 0.1 to 2.5 parts of a soluble multiply olefinically unsaturated polyester, (5) 30 to 65 parts of a powdered oxidizer selected from the group consisting of the ammonium, sodium, nd potassium salts of nitric and perchloric acids and mixtures thereof, (6) 0 to 25 parts of a finely particled, readily combustible solid selected from the group consisting of carbon, aluminum, magnesium, zinc, zirconium and boron.
Claim 2
Dependent Claim
17 words
Polymerizable combustible compositions as set forth in claim 2 in which the plasticizer is triethylene glycol dinitrate.
Claim 3
Dependent Claim
20 words
Compositions as set forth in claim 2 which contain 0.01 to 2 parts of a chemical stabilizer for nitro compounds.
Claim 4
Dependent Claim
24 words
Compositions as set forth in claim 2 which cOntain 0.01 to 2 parts of a compound which inhibits the polymerization of ethylenically unsaturated compounds.
Claim 5
Dependent Claim
140 words
Propellant compositions consisting essentially of, as binder, a copolymer of (a) 14 to 31 parts of trinitratopentaerythrityl acrylate, (b) 1 to 3 parts of a monoacrylic alkyl ester having an alkyl group of four to twelve carbon atoms, (c) 0.1 to 2.5 parts of a soluble multiply olefinically unsaturated polyester, said copolymer being plasticized with 10 to 26 parts of a liquid plasticizer for poly(trinitratopentaerythrityl acrylate), said plasticizer consisting essentially of a major proportion of compounds containing nitro groups, having dispersed uniformly therethrough 30 to 65 parts of a powdered oxidizer selected from the group consisting of the ammonium, sodium and potassium salts of nitric and perchloric acids and mixtures thereof, and also having dispersed therethrough 0 to 25 parts of a finely particled, readily combustible solid selected from the group consisting of carbon, aluminum, magnesium, zinc, zirconium and boron.
Claim 6
Dependent Claim
19 words
Propellant compositions as set forth in claim 6 in which there is present 1 to 25 parts of aluminum.
Claim 7
Dependent Claim
22 words
Compositions as set forth in claim 7 in which the aluminum is a mixture of a leafing powder and an atomized powder.
Claim 8
Dependent Claim
16 words
Propellant compositions as set forth in claim 6 in which the plasticizer is triethylene glycol dinitrate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |