Synthesizing an organic high explosive in a flow reactor
US-2025223243-A1 · Jul 10, 2025 · US
Flow synthesis of rdx
US2024051927A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024051927-A1 |
| Application number | US-202118256548-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 1, 2021 |
| Priority date | Dec 9, 2020 |
| Publication date | Feb 15, 2024 |
| Grant date | — |
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Abstract
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The invention relates to a method for the flow synthesis manufacture of RDX, comprising the steps of preparing input flow reagent A, comprising hexamine dissolved in nitric acid with a concentration less than 92%, preparing input flow reagent B comprising 99% concentration nitric acid, causing the input flow reagents A and B to enter a flow reactor at a flow rate, so as to cause a total nitric acid concentration of greater than 93%, in said flow reactor, cooling the reaction chamber to less than 30° C., causing the output mixed flow to be quenched.
First claim
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1 . A method for the flow synthesis manufacture of RDX, the method comprising: preparing input flow reagent A, comprising hexamine dissolved in nitric acid with a concentration less than 92%; preparing input flow reagent B, comprising greater than 95% concentration nitric acid; causing the input flow reagents A and B to enter a reaction chamber of a flow reactor at a flow rate, so as to cause a total nitric acid concentration of greater than 93%, in said flow reactor; cooling the reaction chamber to less than 30° C.; and causing an output mixed flow to be quenched, to cause precipitation of RDX. 2 . The method according to claim 1 , wherein the hexamine is dissolved in nitric acid with a concentration in the range of from 88% to 90%. 3 . The method according to claim 1 , wherein the hexamine is dissolved in nitric acid to achieve a saturated solution. 4 . The method according to claim 1 , wherein the input flow reagent B is 99% concentration nitric acid. 5 . The method according to claim 1 , wherein the total nitric acid concentration is in the range of 90-99%, in said flow reactor. 6 . The method according to claim 1 , wherein the flow rate ratio of input flow reagent A to input flow reagent B (A:B) is greater than 1:3 (A:B). 7 . The method according to claim 1 , wherein the temperature in said flow reactor is in the range of from 20° C. to 27° C. 8 . The method according to claim 1 , wherein the nitric acid in input flow reagent B further comprises oleum or NaNO 2 . 9 . The method according to claim 1 , wherein the quench is caused by mixing the output mixed flow and a quenching agent. 10 . The method according to claim 9 , wherein the quenching agent is an aqueous solution, so as to cause precipitation of RDX. 11 . The method according to claim 9 , wherein the quenching agent is cooled below 10° C. 12 . Apparatus for carrying out the process according to claim 1 , wherein the apparatus is configured for explosive compatibility. 13 . A method comprising the use of flow synthesis for providing explosive material from hexamine. 14 . A method for the flow synthesis manufacture of RDX, the method comprising: preparing input flow reagent A, comprising hexamine dissolved in nitric acid with a concentration less than 92%; preparing input flow reagent B, comprising a nitration reagent; causing the input flow reagents A and B to enter a reaction chamber of a flow reactor at a flow rate, so as to cause nitration of RDX in said flow reactor; cooling the reaction chamber to less than 30° C.; and causing an output mixed flow to be quenched, to allow precipitation of RDX. 15 . The method according to claim 14 , wherein the nitration reagent is selected from at least 70% concentration nitric acid and NaNO 2 , or containing only 99% concentration nitric acid. 16 . The method according to claim 14 , wherein causing the output mixed flow to be quenched includes causing the output mixed flow to come into contact with an aqueous solution. 17 . The method according to claim 14 , wherein the nitration reagent comprises at least 70% concentration nitric acid and NaNO 2 . 18 . The method according to claim 14 , wherein the nitration reagent comprises 99% concentration nitric acid. 19 . The method according to claim 1 , wherein the total nitric acid concentration is in the range of 93% to 95%, in said flow reactor. 20 . The method according to claim 1 , wherein the total nitric acid concentration is in the range of 93% to 99%, in said flow reactor.
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Classifications
- C07D251/06Primary
with hetero atoms directly attached to ring nitrogen atoms · CPC title
- C06B25/34Primary
the compound being a nitrated acyclic, alicyclic or heterocyclic amine · CPC title
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- What does patent US2024051927A1 cover?
- The invention relates to a method for the flow synthesis manufacture of RDX, comprising the steps of preparing input flow reagent A, comprising hexamine dissolved in nitric acid with a concentration less than 92%, preparing input flow reagent B comprising 99% concentration nitric acid, causing the input flow reagents A and B to enter a flow reactor at a flow rate, so as to cause a total nitric …
- Who is the assignee on this patent?
- Bae Systems Plc
- What technology area does this patent fall under?
- Primary CPC classification C07D251/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Feb 15 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).