EP0424490B1 - Procede et dispositif pour produire une poudre de charge propulsive tribasique - Google Patents

Procede et dispositif pour produire une poudre de charge propulsive tribasique Download PDF

Info

Publication number
EP0424490B1
EP0424490B1 EP90906180A EP90906180A EP0424490B1 EP 0424490 B1 EP0424490 B1 EP 0424490B1 EP 90906180 A EP90906180 A EP 90906180A EP 90906180 A EP90906180 A EP 90906180A EP 0424490 B1 EP0424490 B1 EP 0424490B1
Authority
EP
European Patent Office
Prior art keywords
solvent
extruder
powder
energy carrier
moist
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.)
Revoked
Application number
EP90906180A
Other languages
German (de)
English (en)
Other versions
EP0424490A1 (fr
Inventor
Klaus-Dieter Mogendorf
Wolfgang Miehling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WNC Nitrochemie GmbH
Nitrochemie Aschau GmbH
Original Assignee
WNC Nitrochemie GmbH
Nitrochemie Aschau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6380472&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0424490(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by WNC Nitrochemie GmbH, Nitrochemie Aschau GmbH filed Critical WNC Nitrochemie GmbH
Publication of EP0424490A1 publication Critical patent/EP0424490A1/fr
Application granted granted Critical
Publication of EP0424490B1 publication Critical patent/EP0424490B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

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
    • 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
    • C06B21/0033—Shaping the mixture
    • 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
    • C06B21/0033—Shaping the mixture
    • C06B21/0075—Shaping the mixture by extrusion

Definitions

  • the invention relates to a method for producing a three-base propellant charge powder from nitrocellulose, explosive oil and a third, crystalline energy source and additives using a solvent, and to an apparatus for carrying out this method.
  • the three-base propellant powders are also known as "cold" powders. Compared to the usual, "hot” powders that do not contain a third, crystalline energy source, they have the advantage of greater protection of the pipe.
  • the explosive oil acts as a gelatinator for the nitrocellulose.
  • the amount of the explosive oil is often not sufficient for complete gelatinization of the nitrocellulose and a uniform, homogeneous incorporation of the third, crystalline energy carrier into the powder mass, especially if the proportion of the crystalline energy carrier is high.
  • three-base propellant powder is produced using an organic solvent as a gelatinization aid.
  • the solvent for example a mixture of acetone and alcohol, is added when mixing the raw powder mass and is finally removed from the finished powder.
  • a continuously feasible process for the production of three-base propellant powder with solvent has also become known (DE-PS 24 61 646 and US-PS 4,051,207).
  • a solvent-moist mixture of all components of the propellant charge powder is pre-plastified on an open, continuously working kneader, ie partially gelatinized.
  • the mass usually passes through the kneader several times.
  • the pre-plasticized, solvent-containing mass is then gelatinized in an extruder and converted into granulate form.
  • the extruder should also be used several times be run through.
  • the granules are then pressed in a further extruder to the desired powder strands, which are then cut to length and dried.
  • This process is very complex in terms of the necessary mechanical equipment and in the process management, ie the setting and monitoring of the process parameters.
  • the invention is based on the object of specifying an improved, continuously executable method of the type mentioned at the outset which, in particular, requires less mechanical effort than previously and the course of which is easily adjustable and controllable.
  • a device for performing this method is to be specified.
  • Explosive oil in the context of this application is to be understood as the explosive oils usually used for propellant charge powder, in particular nitroglycerin and diglycol dinitrate, as well as mixtures of the aforementioned explosive oils.
  • the third, crystalline energy source is usually nitroguanidine (Nigu; NQ).
  • nitroguanidine Nigu; NQ
  • RDX hexogen
  • HMX octogen
  • PETN nitropenta
  • the additives are those customary in powder production, in particular plasticizers and stabilizers, which are present in the powder mixture in relatively small proportions by weight.
  • Drying the powder strands means any measure customary in powder production with which the solvent can be removed from the powder strands practically completely.
  • the process according to the invention is characterized in that not all components of the three-base propellant charge powder are mixed with one another from the outset. Rather, a finished gelatinized intermediate product is initially only produced from nitrocellulose and explosive oil, which are premixed into a water-moist raw mass, in a single pass on an open kneading device without the use of solvent.
  • This gelatinized and therefore dry intermediate product is granulated and fed as granules together with the third, crystalline energy source to a closed extruder, the solvent being added only now. Kneading in a closed extruder creates a homogeneous, doughy mass in which the crystalline energy source is uniformly and finely distributed. This solvent-moist mass is extruded from the kneading into powder strands in the same extruder, which are then cut to length and dried in the usual manner.
  • the method according to the invention can be carried out continuously. To carry it out, it only requires two essential machines, namely the open kneading device and the closed extruder, in addition a pelletizing device downstream of the open kneading device and a means for transporting the pellets to the extruder.
  • the procedure is simple. Each machine only needs to be run once. Even if the recipes are changed frequently, it is not difficult to adjust the respective process parameters in a new and correct manner and to monitor their compliance.
  • An advantage in this context is the fact that the first part of the process, the processing of the raw mass on the open kneading device, runs little differently than in the usual production of dibasic propellant powders, so that the routines and experience of this production method can be used in this respect .
  • This also guarantees a high level of security.
  • the nitrocellulose is completely gelatinized by the Explosive oil is particularly at high risk of self-ignition of the powder mass in every production, for example due to excretion of explosive oil from the raw mass.
  • the method according to the invention only works on the open kneading device, where the consequences of any self-ignition are far more harmless than in a closed processing device, for example an extruder.
  • the risk of explosion is significantly reduced by the addition of the solvent in the process according to the invention.
  • the method according to the invention manages with a significantly smaller amount than the solvent in terms of the production volume than the conventional manufacturing method and the losses of solvent during drying of the extruded powder strands are correspondingly lower, which increases the economy and makes a contribution to environmental protection. For the same reason, the drying effort compared to the usual method is considerably lower.
  • a shear roller mill which is known per se for the homogenization and plasticization of non-explosive thermoplastic materials, for example plastics, is preferably used as the open kneading device (EP-A 0 148 966 or US Pat. No. 4,605,309).
  • the shear roller mill has two independently drivable rollers, between which there is an adjustable roller gap.
  • the rollers are provided with spiral grooves, which ensure that the processed material is securely drawn into the gap and at the same time generate an axial transport movement in the nip from one end of the pair of rollers to the other end.
  • the water-moist raw mass is continuously fed onto the two rollers of the shear roller mill at one end and then gradually transported to the other end of the two rollers with kneading and intensive shearing.
  • the raw material arriving at the other end is then gelatinized.
  • the water must be removed from the raw mass. This is done by squeezing in the roller gap and also by evaporating the water, since the rollers of the shear roller mill are heated.
  • the raw powder mass fed to the shear roller mill preferably has a water moisture content of 20% to 30%. The removal of this water and thus the increasing gelatinization of the raw material takes place gradually during the migration of the raw material along the rollers.
  • the process can be controlled in such a way that the raw mass at the discharge end of the roller pair is practically dry and thus gelatinized, which means that the residual water content is less than 3% and preferably less than 1%, for example 0.5%.
  • the finished gelatinized raw material is located on one of the two rollers and can be removed there continuously with simultaneous granulation, for example with a granulating head.
  • the process according to the invention also has the advantage that the recipes can be adhered to very precisely and the production of various propellant powders can therefore be reproduced exactly because Both the intermediate product due to its granular form and the third crystalline energy source can both be fed to the extruder in precisely metered form, for example with the aid of suitable metering devices.
  • the extruder requires a first filling opening for the granules in the working direction, then an opening for the supply of the solvent and then an opening for the supply of the crystalline energy source under pressure, which is technically somewhat more complex.
  • the additives can already be fed to the kneading device together with the premixed water-moist raw material.
  • the joint application of both options can be done in In individual cases, ie depending on the particular recipe, it may be useful, for example, in such a way that certain additives are only fed to the kneading device and the remaining additives to the extruder.
  • the raw mass fed to the shear roller usually comprises 40% to 60% and preferably 45% to 55% nitrocellulose.
  • the crystalline energy source is metered into the extruder in an amount of 10% to 55% and preferably in an amount between 40% and 55% of the granules supplied.
  • the solvent is expediently fed to the extruder in an amount of 60 to 130 grams per kilogram of the solids fed (granules + crystalline energy source). This means a saving in solvent of 30% to 60% compared to conventional manufacturing processes.
  • solvents are Alcohol or acetone in question. The selection depends, among other things. on the degree of nitration of the nitrocellulose used. The higher the degree of nitration, the more or the sharper the solvent is generally necessary.
  • a device for carrying out the method according to the invention is characterized by an open shear roller mill, a downstream granulating device, a transport device and a closed extruder.
  • the device shown comprises an open shear roller mill 1, as is known, for example, from US Pat. No. 4,605,309.
  • the shear roller mill has two independently drivable rollers, between which a roller gap is formed.
  • the pre-mixed, water-moist raw powder mixture of water-moist nitrocellulose and explosive oil is fed to the shear roller mill.
  • the feed is indicated in the drawing by a feed hopper and an arrow.
  • the raw mass is kneaded in the shear roller mill and thereby gelatinized while removing the water.
  • a pelletizing device 2 is assigned to this end of the two rolls, with which the gelatinized raw material or the intermediate product is removed from one of the two rolls and thereby pelletized.
  • the granulated intermediate product reaches the input opening 5 of a closed extruder 4 by means of a transport device 3.
  • the third, crystalline energy carrier is fed to the same input opening 5.
  • the granulate and the third energy carrier are expediently supplied in each case via a metering device (not shown in more detail).
  • an addition device 6 is provided on the extruder 4 for the addition of solvent.
  • a further filling opening 7 can be provided behind the feed device 6, via which the crystalline energy carrier is introduced into the extruder separately from the granulate. This must then be done under pressure because a pressure has already built up in the area of the filling opening 7 inside the extruder.
  • the extruder 4 is provided in the usual way with one or two screws 8, which are rotatably mounted in the housing of the extruder and are only indicated schematically here.
  • a die not shown
  • the material is extruded into powder strands.
  • the solvent e.g. Alcohol
  • This solvent-containing mass is finally passed through the die of the extruder e.g. extruded into a 7-hole powder strand.
  • the powder strands emerging from the extruder are cut to length in a conventional manner, not shown, and suitably, e.g. in a drying facility, freed from the solvent.
  • the two rollers of the shear roller mill can be heated to temperatures between 80 o C and 120 o C.
  • the adjustable speed range of the two rollers is between 40 and 70 rpm.
  • the gap between the two rollers is usually set to less than 2 mm .
  • the granulating device 2 delivers a granulate in the size of 3 to 6 mm.
  • the extruder 4 is typically designed with a length to diameter ratio of 20 to 24.
  • the temperature inside is between 20 o C and 50 o C.
  • the screw speed can be set between 30 and 80 rpm.
  • the dry granules and nitroguanidine as the third energy source are metered into the extruder in a weight ratio of 45% granules and 55% nitroguanidine, where they are homogenized with the aid of solvents and extruded into a 7-hole powder.
  • the throughput here is 40 kilograms per hour at a screw speed of 60 rpm and an extruder head pressure of 23 bar.
  • a mixed raw mass of 62% nitrocellulose, 37% nitroglycerin, 0.3% centralite, 0.5% acardite, 0.1% magnesium oxide and 0.1% graphite with an initial water content is placed on the shear roller mill 1 processed by 28%.
  • the temperature of the first roller is 110 ° C. and its speed is 50 rpm, the temperature the second roller 90 o C and its speed 45 rpm. This results in a throughput of 42 kilograms of dry mass per hour with a water content of approx. 0.7% at the granulating device.
  • the granules and nitroguanidine are metered into the extruder in a weight ratio of 60%: 40% and processed there with acetone as solvent in an amount of 3 liters per hour and extruded to form a 7-hole bulk powder.
  • the screw speed is 40 rpm
  • the head pressure is 27 bar
  • the head temperature is 48 o C.
  • the throughput is 30 kg per hour.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Medicinal Preparation (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Glanulating (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Formation And Processing Of Food Products (AREA)

Abstract

Pour obtenir un processus ininterrompu et de fonctionnement sûr, on a prévu de fabriquer dans un laminoir à cisaillement (1), sans solvant pour commencer, un produit intermédiaire complètement gélatinifié bibasique consistant en de la nitrocellulose et de la nitroglycérine. On granule ce produit intermédiaire et on l'introduit dans une extrudeuse (4), où l'on introduit également le troisième porteur d'énergie cristallin et des solvants. La masse pulvérulente est alors homogénéisée et extrudée, et l'on obtient ainsi des barres de poudre humidifiées par solvants.

Claims (9)

  1. Procédé pour la fabrication d'une poudre tribasique de charge propulsive à partir de nitrocellulose, d'huile explosive et d'un troisième vecteur d'énergie cristallin ainsi que d'additifs, en utilisant un solvant, caractérisé par les étapes suivantes :
    a) la masse brute humectée d'eau prémélangée à partir de nitrocellulose humectée d'eau et d'huile explosive est gélatinisée sur un dispositif malaxeur ouvert travaillant en continu et est en même temps séchée, le processus de malaxage étant réglé de manière que la masse brute au moment de quitter le dispositif malaxeur soit transformée en un produit intermédiaire gélatinisé avec une teneur résiduelle en eau inférieure à 3 % ;
    b) le produit intermédiaire est transformé en granulat au moment de quitter le dispositif malaxeur ;
    c) le produit intermédiaire granulé (granulat) et le troisième vecteur d'énergie cristallin ainsi que le solvant sont amenés à une extrudeuse fermée travaillant en continu pour y être homogénéisés par malaxage et être extrudés sous forme de barres de poudre humectées de solvant, auquel cas on mélange, dans le sens de travail de l'extrudeuse, tout d'abord le granulat et le vecteur d'énergie cristallin et ensuite le solvant ;
    d) les barres de poudres humectées de solvant sont coupées à la longueur et séchées.
  2. Procédé selon la revendication 1,
    caractérisé en ce qu'
    un laminoir broyeur ouvert à cylindres est utilisé comme dispositif malaxeur.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    les additifs sont délivrés, ensemble avec la masse brute prémélangée humectée en eau, au dispositif malaxeur.
  4. Procédé selon la revendication 1, 2 ou 3,
    caractérisé en ce que
    les additifs sont délivrés, ensemble avec le granulat et le troisième vecteur d'énergie cristallin, à l'extrudeuse.
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé en ce que
    la masse brute amenée au cylindre broyeur comprend 40 % à 60 % de nitrocellulose.
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé en ce que
    la masse brute amenée au cylindre broyeur présente une humidité de 20 % à 30 %.
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce que
    le vecteur d'énergie cristallin est délivré à l'extrudeuse dans une proportion de 10 % à 55 % du granulat fourni.
  8. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que
    le solvant est amené à l'extrudeuse dans une proportion de 60 à 130 g par kg de matière solide fournie (granulat + vecteur d'énergie cristallin).
  9. Dispositif pour la mise en oeuvre du procédé selon l'une des revendications 1 à 8,
    caractérisé par
    un laminoir broyeur ouvert à cylindres, un dispositif de granulation placé après, un dispositif de transport et une extrudeuse fermée qui présente une première ouverture de remplissage dans le sens de travail pour le granulat et le vecteur d'énergie cristallin et ensuite une ouverture pour l'amenée du solvant.
EP90906180A 1989-05-11 1990-04-17 Procede et dispositif pour produire une poudre de charge propulsive tribasique Revoked EP0424490B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3915437 1989-05-11
DE3915437 1989-05-11
PCT/EP1990/000616 WO1990013528A2 (fr) 1989-05-11 1990-04-17 Procede et dispositif pour produire une poudre de charge propulsive tribasique

Publications (2)

Publication Number Publication Date
EP0424490A1 EP0424490A1 (fr) 1991-05-02
EP0424490B1 true EP0424490B1 (fr) 1995-03-08

Family

ID=6380472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906180A Revoked EP0424490B1 (fr) 1989-05-11 1990-04-17 Procede et dispositif pour produire une poudre de charge propulsive tribasique

Country Status (19)

Country Link
US (1) US5266242A (fr)
EP (1) EP0424490B1 (fr)
JP (1) JPH0777992B2 (fr)
KR (1) KR940004634B1 (fr)
CN (1) CN1042324C (fr)
AR (1) AR242765A1 (fr)
AT (1) ATE119512T1 (fr)
AU (1) AU632562B2 (fr)
BR (1) BR9006751A (fr)
CA (1) CA2031517C (fr)
DE (1) DE59008631D1 (fr)
EG (1) EG21067A (fr)
FI (1) FI97802C (fr)
GR (1) GR1003566B (fr)
IL (1) IL94193A (fr)
NO (1) NO175936C (fr)
PT (1) PT94013A (fr)
WO (1) WO1990013528A2 (fr)
ZA (1) ZA903514B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501223C2 (sv) * 1992-08-28 1994-12-12 Bofors Explosives Ab Sätt och anordning för att framställa pyrotekniska satser genom valsning
US5487851A (en) * 1993-12-20 1996-01-30 Thiokol Corporation Composite gun propellant processing technique
FR2723086B1 (fr) * 1994-07-29 1996-09-13 Poudres & Explosifs Ste Nale Procede continu de fabrication sans solvant de produits pyrotechniques composites
WO1998042640A1 (fr) 1997-03-21 1998-10-01 Cordant Technologies, Inc. Procede de fabrication de poudre noire et de substitut de poudre noire
ATE298736T1 (de) 1999-02-23 2005-07-15 Gen Dynamics Ordnance & Tactic Perforierter treibstoff und verfahren zu seiner herstellung
US6315930B1 (en) 1999-09-24 2001-11-13 Autoliv Asp, Inc. Method for making a propellant having a relatively low burn rate exponent and high gas yield for use in a vehicle inflator
DE102010020776B4 (de) * 2010-05-18 2015-03-05 Diehl Bgt Defence Gmbh & Co. Kg Treibladung und Verfahren zu ihrer Herstellung
CN102826942B (zh) * 2012-09-18 2013-07-31 湖南省浏阳金生花炮有限公司 一种无烟烟花发射药
US9539752B2 (en) * 2013-08-09 2017-01-10 General Dynamics Ordnance and Tactical Systems—Canada Valleyfield, Inc. Continuous celluloid twin screw extrusion process
CN103980071A (zh) * 2014-05-06 2014-08-13 西安近代化学研究所 一种用于炸药捏合碾片的滚筒装置
JP6472628B2 (ja) * 2014-09-30 2019-02-20 カーリットホールディングス株式会社 液体推進薬の製造方法
CN104950056B (zh) * 2015-07-14 2017-03-01 西安近代化学研究所 一种叠氮硝胺吸收药样品制备方法
CN105367360B (zh) * 2015-12-28 2017-09-29 中国科学院沈阳自动化研究所 一种制备炮弹发射药自动上料装置
CN110540484B (zh) * 2019-10-14 2021-06-15 北方化学工业股份有限公司 一种烟花用硝化棉连续制备工艺

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086896A (en) * 1961-01-19 1963-04-23 Russell L Trask Nitroguanidine propellant composition and process of preparation
DE2316538C3 (de) * 1973-04-03 1982-05-06 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zur Herstellung von Gudol- Pulver
US4076773A (en) * 1974-11-25 1978-02-28 W. R. Grace & Co. Process for prilling ammonium nitrate
DE2461646C2 (de) * 1974-12-27 1984-01-05 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zur Herstellung von Treibladungspulvern
DE2825567B1 (de) * 1978-06-10 1979-11-15 Dynamit Nobel Ag Verfahren zur kontinuierlichen Herstellung von Explosivstoffgemischen
DE2900020C2 (de) * 1979-01-02 1982-12-09 WNC-Nitrochemie GmbH, 8261 Aschau Verfahren zur Herstellung eines mehrbasigen Treibladungspulvers
NO144666C (no) * 1980-02-29 1981-10-14 Dyno Industrier As Fremgangsmaate for fremstilling av aluminiumholdige hoeyenergisprengstoffblandinger
DE3042697C2 (de) * 1980-11-12 1986-02-20 WNC-Nitrochemie GmbH, 8261 Aschau Verfahren zum kontinuierlichen Herstellen einbasiger Pulver
DE3242301A1 (de) * 1982-11-16 1984-05-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Verfahren und vorrichtung zur herstellung ein- oder mehrbasiger treibladungspulver
US4726919A (en) * 1985-05-06 1988-02-23 Morton Thiokol, Inc. Method of preparing a non-feathering nitramine propellant
US4650617A (en) * 1985-06-26 1987-03-17 Morton Thiokol Inc. Solvent-free preparation of gun propellant formulations
DE3532525A1 (de) * 1985-09-12 1987-03-19 Fraunhofer Ges Forschung Dreibasiges treibladungspulver und verfahren zu seiner herstellung
DE3635296C2 (de) * 1986-10-16 1995-12-21 Nitrochemie Gmbh Verfahren zum Herstellen von Treibladungspulver

Also Published As

Publication number Publication date
FI97802C (fi) 1997-02-25
EG21067A (en) 2000-10-31
CA2031517A1 (fr) 1990-11-12
ZA903514B (en) 1991-02-27
CA2031517C (fr) 1999-08-24
KR920701080A (ko) 1992-08-11
PT94013A (pt) 1991-01-08
BR9006751A (pt) 1991-08-06
AR242765A1 (es) 1993-05-31
GR900100307A (el) 1991-10-10
DE59008631D1 (de) 1995-04-13
EP0424490A1 (fr) 1991-05-02
FI906423A0 (fi) 1990-12-28
ATE119512T1 (de) 1995-03-15
WO1990013528A2 (fr) 1990-11-15
US5266242A (en) 1993-11-30
IL94193A0 (en) 1991-01-31
GR1003566B (el) 2001-04-10
AU632562B2 (en) 1993-01-07
WO1990013528A3 (fr) 1990-12-27
JPH03505199A (ja) 1991-11-14
AU5424490A (en) 1990-11-29
CN1042324C (zh) 1999-03-03
CN1047072A (zh) 1990-11-21
IL94193A (en) 1994-11-28
NO175936B (no) 1994-09-26
NO910139D0 (no) 1991-01-11
FI97802B (fi) 1996-11-15
JPH0777992B2 (ja) 1995-08-23
NO175936C (no) 1995-01-04
KR940004634B1 (ko) 1994-05-27
NO910139L (no) 1991-01-11

Similar Documents

Publication Publication Date Title
EP0424490B1 (fr) Procede et dispositif pour produire une poudre de charge propulsive tribasique
EP1324869B1 (fr) Extrudeuse a plusieurs vis et procede de preparation et / ou de traitement d'elastomeres a matiere de charge ajoutee
EP0288505B1 (fr) Procede pour fabriquer de la poudre de charge propulsive
DE2461646C2 (de) Verfahren zur Herstellung von Treibladungspulvern
DE69010790T2 (de) Verfahren zur Herstellung von Explosivstoffen.
EP0113402B1 (fr) Procédé et dispositif pour la fabrication d'un propergol mono- ou multi-base
DE2316538C3 (de) Verfahren zur Herstellung von Gudol- Pulver
EP0157911B1 (fr) Procédé de fabrication de poudres propulsives composites et d'explosifs
EP0203260B1 (fr) Machine à pétrir
DE19528052C2 (de) Verfahren zur kontinuierlichen, lösungsmittelfreien Herstellung pyrotechnischer Composit-Produkte
DE4012294C1 (fr)
EP1743905B1 (fr) Procédé et appareil pour la préparation de nitrate de cellulose stabilisé
EP2332894A1 (fr) Procédé et fabrication de matières explosives
CH372581A (de) Verfahren zur Herstellung von Schiesspulvern und Treibsätzen und Apparatur zur Durchführung dieses Verfahrens
DE3448139C2 (en) Device for producing plastics-bound propellant powders and explosives
DE4300298C2 (de) Verfahren zur Herstellung von mit Hartstoff- und/oder Metallpulvern versetzten flexiblen Kunststoffbändern
DE1646285A1 (de) Kontinuierliche Herstellung von Pulver ohne Loesungsmittel
DE2446021C2 (de) Verfahren zum Formen von Pulver, insbesondere von Schieß- oder explosiven Pulver
EP0051881B1 (fr) Procédé de production en continu d'une poudre simple base
DE2017225A1 (de) Verwendung eines Planetwalzen-Extruders zum kontinuierlichen Überführen von Elastomeren-Mischungen in die Granulatform
WO2020089028A1 (fr) Fabrication continue de graphène
DE1099418B (de) Verfahren zur Herstellung von Pulverkoernern
CH354248A (de) Verfahren zur Herstellung feiner Kügelchen aus härtbarem plastischem Material

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910206

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19930111

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Effective date: 19950308

Ref country code: BE

Effective date: 19950308

REF Corresponds to:

Ref document number: 119512

Country of ref document: AT

Date of ref document: 19950315

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: DR. ING. AUSSERER ANTON

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950309

REF Corresponds to:

Ref document number: 59008631

Country of ref document: DE

Date of ref document: 19950413

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19950417

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950430

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19950609

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960201

26 Opposition filed

Opponent name: SOCIETE NATIONALE DES POUDRES ET EXPLOSIFS (SNPE)

Effective date: 19951208

NLR1 Nl: opposition has been filed with the epo

Opponent name: SOCIETE NATIONALE DES POUDRES ET EXPLOSIFS (SNPE)

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000403

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000417

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20000425

Year of fee payment: 11

Ref country code: CH

Payment date: 20000425

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20000427

Year of fee payment: 11

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 20001115

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 20001115

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLR2 Nl: decision of opposition
APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO