DE1022139B - Process for the production of porous low-smoke powder - Google Patents
Process for the production of porous low-smoke powderInfo
- Publication number
- DE1022139B DE1022139B DEW20372D DEW0020372D DE1022139B DE 1022139 B DE1022139 B DE 1022139B DE W20372 D DEW20372 D DE W20372D DE W0020372 D DEW0020372 D DE W0020372D DE 1022139 B DE1022139 B DE 1022139B
- Authority
- DE
- Germany
- Prior art keywords
- production
- powder
- temperature
- porous
- porous low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000779 smoke Substances 0.000 title description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 210000002268 wool Anatomy 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- DQYBDCGIPTYXML-UHFFFAOYSA-N ethoxyethane;hydrate Chemical compound O.CCOCC DQYBDCGIPTYXML-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0091—Elimination of undesirable or temporary components of an intermediate or finished product, e.g. making porous or low density products, purifying, stabilising, drying; Deactivating; Reclaiming
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Peptides Or Proteins (AREA)
Description
Verfahren zur Herstellung von porösem rauchschwachem Pulver Bekannt ist ein Verfahren zur Herstellung von Treibmitteln auf der Grundlage gelatinierter Nitrocellulose, bei dem die Gelatinierung bei gewöhnlichen Druck und gewöhnlicher Temperatur mit Hilfe von Methanol oder Äthanol an darin löslichen Kollodiumwollen vorgenommen wird. Das auf diese Weise unter Verwendung eines Gemisches von Schießwolle und Kollodiumwolle hergestellte Pulvergel wird dann in der üblichen Weise durch Pressen: und Schneiden zu Röhren, Streifen oder Blättchen verformt.Process for the production of porous low-smoke powder is known is a process for the production of propellants based on gelatinized Nitrocellulose, which undergoes gelatinization at ordinary pressure and ordinary Temperature with the help of methanol or ethanol on soluble collodion wool is made. This in this way using a mixture of gunwool Powder gel made from collodion wool is then processed in the usual manner Pressing: and cutting formed into tubes, strips or sheets.
Es wurde nun gefunden, daß sich aus derartigen Massen in einfacher Weise poröse Pulver gewinnen lassen, indem man sie nach geeigneter Formgebung in Wasser oder wässerige Lösungen einer solchen Temperatur einträgt, die oberhalb, des Siedepunktes des zur Gelatinierung verwendeten Alkohols liegt.It has now been found that from such masses it is easier Wise porous powder can be obtained by shaping them into Enters water or aqueous solutions at a temperature above, the boiling point of the alcohol used for gelatinization.
Den Grad der hierbei erzielten Porosität kann man, wie weiter gefunden wurde, in gewünschter Weise durch die Menge des angewandten: Alkohols und durch die Temperatur der wässerigen Flüssigkeit ein. stellen.The degree of porosity achieved here can be found, as further found was, in a desired manner by the amount of applied: alcohol and by the temperature of the aqueous liquid. place.
Gegenüber der heute ausschließlich benutzten Arbeitsweise zur Herstellung poröser Pulver, bei der in das Pulvergel Kalisalpeter eingearbeitet und nach der Formgebung wieder ausgelaugt wird, besitzt das Verfahren der Erfindung den Vorteil, da13 es wesentlich einfacher und weniger kostspielig ist.Compared to the method of production used exclusively today porous powder in which potassium nitrate is incorporated into the powder gel and after Shaping is leached out again, the method of the invention has the advantage since it is much simpler and less expensive.
In der französischen Patentschrift 643 857 wird zur Herstellung poröser Pulver vorgeschlagen, die in üblicher Weise mit einem Gemisch von Äther und Alkohol gelatinierten. Massen in heißes Wasser einzutragen. Dieses Verfahren. liefert aber kein brauchbares Ergebnis. Die plötzliche Verdampfung des nicht wasserlöslichen Äthers führt zu einer völligen. Deformierung der Pulverteile und zu sehr ungleichmäßiger Porosität. Im Gegensatz dazu wird nach dem Verfahren der Erfindung ein gleichmäßig fein poröses Pulver, dessen einzelne Elemente nicht deformiert sind, erhalten.In the French patent specification 643 857 porous is used for the production Powder proposed in the usual way with a mixture of ether and alcohol gelatinized. To enter masses in hot water. This method. but delivers no useful result. The sudden evaporation of the insoluble in water Ether leads to a complete. Deformation of the powder parts and very unevenly Porosity. In contrast, according to the method of the invention, a becomes uniform finely porous powder, the individual elements of which are not deformed, obtained.
In der genannten französischen Patentschrift wird unter anderem auch Aceton als verwendbares Lösungsmittel genannt. Aceton hat aber den Nachteil, daß es im Gegensatz zu den erfindungsgemäß verwendeten Alkoholen nicht nur die Kollodium.wodle, sondern auch die Schießwolle gelatiniert und da.ß daher sehr spröde Pulver erhalten werden. Außerdem ist Aceton ein wesentlich wertvolleres Lösungsmittel als Methanol oder Äthanol, so daß durch die unvermeidlichen Lösungsmittelverluste größere wirtschaftliche Einbußen entstehen.In the French patent mentioned, among other things Acetone mentioned as a usable solvent. But acetone has the disadvantage that In contrast to the alcohols used according to the invention, it is not only the Kollodium.wodle, but also the gunwool gelatinizes and the powder is therefore very brittle will. In addition, acetone is a much more valuable solvent than methanol or ethanol, so that the inevitable loss of solvents makes them more economical There are losses.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEW20372D DE1022139B (en) | 1941-01-22 | 1941-01-22 | Process for the production of porous low-smoke powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEW20372D DE1022139B (en) | 1941-01-22 | 1941-01-22 | Process for the production of porous low-smoke powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1022139B true DE1022139B (en) | 1958-01-02 |
Family
ID=7596740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEW20372D Pending DE1022139B (en) | 1941-01-22 | 1941-01-22 | Process for the production of porous low-smoke powder |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1022139B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR643857A (en) * | 1927-02-24 | 1928-09-25 | Process for the production of smokeless gunpowder, hunting and exercise powders, using machines for making rifle powder | |
| US1889462A (en) * | 1927-02-24 | 1932-11-29 | Bazylewicz-Kniazykow Eugeniusz | Method of producing smokeless gunpowder |
| US1965362A (en) * | 1929-09-16 | 1934-07-03 | Hercules Powder Co Ltd | Method of producing smokeless powder |
-
1941
- 1941-01-22 DE DEW20372D patent/DE1022139B/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR643857A (en) * | 1927-02-24 | 1928-09-25 | Process for the production of smokeless gunpowder, hunting and exercise powders, using machines for making rifle powder | |
| US1889462A (en) * | 1927-02-24 | 1932-11-29 | Bazylewicz-Kniazykow Eugeniusz | Method of producing smokeless gunpowder |
| US1965362A (en) * | 1929-09-16 | 1934-07-03 | Hercules Powder Co Ltd | Method of producing smokeless powder |
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