IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0894503
(1992-06-05)
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발명자
/ 주소 |
- Lukasavage William S. (Succasunna NJ) Portnoy Seymour (Livingston NJ) Alster Jack (Fair Lawn NJ) Nicolich Steven M. (Saddlebrook NJ)
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출원인 / 주소 |
- The United States of America as represented by the Secretary of the Army (Washington DC 06)
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인용정보 |
피인용 횟수 :
5 인용 특허 :
0 |
초록
▼
The invention provides a continuous moving bed reactor, useful for the preparation of 3,7-diacetyl-1,3,5,7-tetraazabicyclo-3.3.1-nonane (DAPT). The reactor makes novel use of water, a known catalyst for said reaction. However, in this invention, the water is present as ice. The ice is made to automa
The invention provides a continuous moving bed reactor, useful for the preparation of 3,7-diacetyl-1,3,5,7-tetraazabicyclo-3.3.1-nonane (DAPT). The reactor makes novel use of water, a known catalyst for said reaction. However, in this invention, the water is present as ice. The ice is made to automatically promote and moderate the reaction as well as regulate the flow of hexamine into the reactor. These automatic functions are achieved by mixing ice with hexamine, the latter is one of two principle reactants used, to generate a standing bed of slurry. When melted at its base, the slurry advanced under the influence of gravity. The melting of the ice being caused by local application of the second principle reactant, acetic anhydride, which is a liquid. The apparatus is constructed in the following way. A tube shaped reservoir for containing the cited slurry is open at the top end and terminates at its bottom end by a porous compartment. The latter compartment openly retains the slurry. A fluid delivery device, i.e. a nozzle, is contained within the porous compartment. The functions of the nozzle is to deliver acetic anhydrid to the hexamine contained in said slurry. The porous compartment is contained within a larger nonporous vessel. The vessel is equipped with a stirrer, an ammonia inlet and a temperature sensing device. This vessel functions as a secondary reaction zone, in which more hexamine, and hece more DAPT, is prepared by an in-situ mechanism commonly known as resynthesis.
대표청구항
In the improved process of making 3,7-diacetyl-1,3,5,7-tetraaza bicyclo-3,3,1-nonane wherein an exotherm is a rate limiting factor, the improvement comprising absorbing said exotherm by a change of phase from the frozen solid state to a liquid state of common ice.
In the improved process of making 3,7-diacetyl-1,3,5,7-tetraaza bicyclo-3,3,1-nonane wherein an exotherm is a rate limiting factor, the improvement comprising absorbing said exotherm by a change of phase from the frozen solid state to a liquid state of common ice.
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