Propellant and process for producing a propellant
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C06B-025/00
C06B-025/18
C06B-025/02
D03D-023/00
D03D-043/00
출원번호
US-0110158
(2011-05-18)
등록번호
US-8795451
(2014-08-05)
우선권정보
DE-10 2010 020 776 (2010-05-18)
발명자
/ 주소
Müller, Dietmar
Langlotz, Walter
출원인 / 주소
Diehl BGT Defence GmbH & Co. KG
대리인 / 주소
Greenberg, Laurence A.
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
A propellant for guns includes at least one energy carrier, nitrocellulose and cellulose acetate butyrate. At least part of the nitrocellulose is alcohol-soluble nitrocellulose. The nitrocellulose serves as a binder and for that purpose is present in a concentration of at least 15% by weight in the
A propellant for guns includes at least one energy carrier, nitrocellulose and cellulose acetate butyrate. At least part of the nitrocellulose is alcohol-soluble nitrocellulose. The nitrocellulose serves as a binder and for that purpose is present in a concentration of at least 15% by weight in the propellant. A process for producing a propellant is also provided.
대표청구항▼
1. A propellant for guns, the propellant comprising: at least one energy carrier;cellulose acetate butyrate having a melting point of over 200° C. and a glass transition temperature of over 130° C., said cellulose acetate butyrate having a concentration of from 2% by weight to 14% by weight in the p
1. A propellant for guns, the propellant comprising: at least one energy carrier;cellulose acetate butyrate having a melting point of over 200° C. and a glass transition temperature of over 130° C., said cellulose acetate butyrate having a concentration of from 2% by weight to 14% by weight in the propellant; andnitrocellulose, at least part of said nitrocellulose being alcohol-soluble nitrocellulose, said nitrocellulose being present in a concentration of at least 15% by weight in the propellant to serve as a binder, and at least 80% by weight of said nitrocellulose being alcohol-soluble nitrocellulose; andat least one plasticizer formed of the following components:from 30% by weight to 50% by weight of 2,4-dinitro-2,4-diazapentane,from 35% by weight to 55% by weight of 2,4-dinitro-2,4-diazahexane, andfrom 0% by weight to 30% by weight of 2,4-dinitro-2,4-diazaheptane;said cellulose acetate butyrate and said nitrocellulose in combination reducing brittle fracture of the propellant. 2. The propellant according to claim 1, wherein said nitrocellulose is present in a concentration of from 15% by weight to 48% by weight in the propellant. 3. The propellant according to claim 1, wherein said nitrocellulose is present in a concentration of from 20% by weight to 35% by weight in the propellant. 4. The propellant according to claim 1, wherein said nitrocellulose is present in a concentration of from 22% by weight to 28% by weight in the propellant. 5. The propellant according to claim 1, wherein at least 90% by weight of said nitrocellulose is alcohol-soluble nitrocellulose. 6. The propellant according to claim 1, wherein at least 95% by weight of said nitrocellulose is alcohol-soluble nitrocellulose. 7. The propellant according to claim 1, wherein 100% by weight of said nitrocellulose is alcohol-soluble nitrocellulose. 8. The propellant according to claim 1, wherein said nitrocellulose has a nitrogen content of from 11.2% to 12.8%. 9. The propellant according to claim 1, wherein said nitrocellulose has a nitrogen content of from 11.6% to 12.7%. 10. The propellant according to claim 1, wherein said cellulose acetate butyrate is present in a concentration of from 3% by weight to 8% by weight in the propellant. 11. The propellant according to claim 1, wherein said cellulose acetate butyrate is present in a concentration of from 3.5% by weight to 6% by weight in the propellant. 12. The propellant according to claim 1, wherein said cellulose acetate butyrate has a melting point of over 230° C. and a glass transition temperature of over 160° C. 13. The propellant according to claim 1, wherein said energy carrier is present in crystalline form. 14. The propellant according to claim 1, wherein said energy carrier is hexogen (RDX), octogen (HMX), nitroguanidine, FOX-7 (1,1-diamino-2,2-dinitroethylene), FOX-12 (guanylurea dinitramide) or ADN (ammonium dinitramide). 15. The propellant according to claim 1, wherein said energy carrier is present in a concentration of from 11% by weight to 69% by weight in the propellant. 16. The propellant according to claim 1, wherein said energy carrier is present in a concentration of from 25% by weight to 55% by weight in the propellant. 17. The propellant according to claim 1, wherein said energy carrier is present in a concentration of from 35% by weight to 45% by weight in the propellant. 18. The propellant according to claim 1, which further comprises at least one stabilizer. 19. The propellant according to claim 18, wherein said at least one stabilizer is magnesium oxide, diphenylamine, diphenylurethane, N,N-diphenylurea (arkadit I), N-methyl-N,N-diphenylurea (arkadit II), 1,3-diethyl,-1′,3′-diphenylurea (centralite I), 1,3-dimethyl-1′,3′-diphenylurea (centralite II) or N-methyl-N′-ethyl-N,N′-diphenylurea (centralite III). 20. The propellant according to claim 1, which further comprises at least one muzzle flash suppressor. 21. The propellant according to claim 20, wherein said at least one muzzle flash suppressor is a cryolite, sodium oxalate, potassium sulphate, potassium nitrate, another potassium salt or a mixture of at least two of a cryolite, sodium oxalate, potassium sulphate, potassium nitrate or another potassium salt. 22. The propellant according to claim 1, which further comprises at least one energy-rich plasticizer. 23. The propellant according to claim 22, wherein said at least one energy-rich plasticizer is bis(2,2-dinitropropyl)acetal/formal (BDNPA/F) or a dinitrodiaza compound. 24. The propellant according to claim 1, wherein said at least one plasticizer is present in a concentration of from 9% by weight to 39% by weight in the propellant. 25. The propellant according to claim 1, wherein said at least one plasticizer is present in a concentration of from 14% by weight to 34% by weight in the propellant. 26. The propellant according to claim 1, wherein said at least one plasticizer is present in a concentration of from 29% by weight to 19% by weight in the propellant. 27. The propellant according to claim 1, which further comprises at least one energy-rich further binder. 28. The propellant according to claim 27, wherein said at least one energy-rich further binder is poly-3-nitratomethyl-3-methyloxetane (polyNIMMO), polyglycidyl nitrate ester (polyglyn), glycidyl azide polymer (GAP), poly-3-azidomethyl-3′-methyloxetane (AMMO), poly-3,3′-bisazidomethyloxetane (BAMO), a mixture thereof, or a further binder which is not energy-rich. 29. The propellant according to claim 28, wherein said further binder which is not energy-rich is polybutadiene having terminal hydroxyl groups (HTPB). 30. The propellant according to claim 1, wherein the propellant is present in the form of shaped bodies or a granular material. 31. A process for producing a propellant for guns, the process comprising the following steps: providing a mixture containing at least one energy carrier; andadding a prefabricated mixture containing cellulose acetate butyrate and alcohol-soluble nitrocellulose to the mixture containing at least one energy carrier to produce the propellant according to claim 1. 32. The process according to claim 31, wherein the mixture contains acetone-soluble nitrocellulose, at least one stabilizer, at least one muzzle flash suppressor, at least one plasticizer and/or at least one further binder which may be energy-rich or not energy-rich. 33. The process according to claim 13, which further comprises processing the mixture to be water-moist and have thermal plasticization.
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