Composition emitting infra-red radiation |
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| 申请号 | US40098173 | 申请日 | 1973-09-26 | 公开(公告)号 | US3878396A | 公开(公告)日 | 1975-04-15 |
| 申请人 | EUROP PROPULSION; | 发明人 | VALLET ANDRE; | ||||
| 摘要 | A composition for emitting infra-red radiation is provided, comprising: I. AT LEAST TWO CHEMICAL COMPOUNDS WHICH, IN THE PRESENCE OF WATER, REACT WITH ONE ANOTHER EXOTHERMICALLY, AND II. AT LEAST ONE CHEMICAL COMPOUND WHICH RELEASES AMMONIA ON REACTION WITH WATER, THE EXOTHERMICITY OF EITHER OR BOTH REACTIONS BEING SUFFICIENT TO RAISE THE TEMPERATURE OF THE AMMONIA PRODUCED SUCH THAT IT EMITS INFRA-RED RADIATION. | ||||||
| 权利要求 | 1. A COMPOSITION FOR EMITTING INFRA-RED RADIATION IN THE PRESENCE OF WATER COMPRISING: A. A FIRST REACTIVE ENTITY COMPRISING AT LEAST TWO CHEMICAL COMPOUNDS WHICH REACT WITH EACH OTHER EXOTHERMICALLY IN THE PRESENCE OF WATER; B. A SECOND REACTIVE ENTITY COMPRISING AT LEAST ONE CHEMICAL COMPOUND WHICH REACTS WITH WATER TO RELEASE AMMONIA; C. THE HEAT GENERATED BY THE FIRST AND SECOND REACTIVE ENTITIES WHEN COMBINED WITH WATER BEING SUFFICIENT TO RAISE THE TEMPERATURE OF THE SAID RELEASED AMMONIA TO A TEMPERATURE AT WHICH IT EMITS INFRA-RED RADIATION. 2. A composition according to claim 1 in which component i) comprises an anhydride of a mineral acid and a metal oxide. 3. A composition according to claim 2 in which the mineral acid anhydride is phosphoric acid anhydride. 4. A composition according to claim 2 in which the metal oxide is an alkaline earth metal oxidE. 5. A composition according to claim 4 in which the metal oxide is barium oxide. 6. A composition according to claim 2 in which the compounds of component i) are used in amounts approximately corresponding to the stoichiometic amounts required for the production of the corresponding salt or salts. 7. A composition according to claim 1 in which component ii) comprises at least one nitride, urea or urea derivative. 8. A composition according to claim 7 in which component ii) comprises aluminium or magnesium nitride. 9. A composition according to claim 1 which is housed in a perforated container of insulating material. 10. A method of deflecting a missile which homes on the target by means of an infra-red detector which comprises: a. placing at an appropriate distance from the intended target of the missile a composition comprising: i. a first reactive entity comprising at least two chemical compounds which react with each other exothermically in the presence of water; ii. a second reactive entity comprising at least one chemical compound which reacts with water to release ammonia; iii. the heat generated by the first and second reactive entities when combined with water being sufficient to raise the temperature of the said released ammonia to a temperature at which it emits infra-red radiation; and b. putting said composition into contact with water. |
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