EP0034849B2 - Agent propulsif pour des générateurs de gaz du type à "base-bleed" et procédé pour sa fabrication - Google Patents
Agent propulsif pour des générateurs de gaz du type à "base-bleed" et procédé pour sa fabrication Download PDFInfo
- Publication number
- EP0034849B2 EP0034849B2 EP81200144A EP81200144A EP0034849B2 EP 0034849 B2 EP0034849 B2 EP 0034849B2 EP 81200144 A EP81200144 A EP 81200144A EP 81200144 A EP81200144 A EP 81200144A EP 0034849 B2 EP0034849 B2 EP 0034849B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- procedure according
- solid
- mixture
- styrene
- granular
- 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.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000003380 propellant Substances 0.000 title abstract description 31
- 239000007787 solid Substances 0.000 claims abstract description 32
- 239000002904 solvent Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000011230 binding agent Substances 0.000 claims abstract description 21
- 229920001971 elastomer Polymers 0.000 claims abstract description 17
- 239000000806 elastomer Substances 0.000 claims abstract description 17
- 239000007800 oxidant agent Substances 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract 5
- 239000000203 mixture Substances 0.000 claims description 32
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 30
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 26
- 238000002485 combustion reaction Methods 0.000 claims description 14
- 229920001577 copolymer Polymers 0.000 claims description 13
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 10
- 229920001169 thermoplastic Polymers 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 230000008030 elimination Effects 0.000 claims description 6
- 238000003379 elimination reaction Methods 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 6
- 239000004014 plasticizer Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 5
- 230000001141 propulsive effect Effects 0.000 claims 4
- 229920002725 thermoplastic elastomer Polymers 0.000 claims 4
- 239000000470 constituent Substances 0.000 claims 2
- 239000002491 polymer binding agent Substances 0.000 claims 2
- 239000000654 additive Substances 0.000 claims 1
- 238000010908 decantation Methods 0.000 claims 1
- 238000007738 vacuum evaporation Methods 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 15
- 239000004416 thermosoftening plastic Substances 0.000 description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 5
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 4
- IDCPFAYURAQKDZ-UHFFFAOYSA-N 1-nitroguanidine Chemical compound NC(=N)N[N+]([O-])=O IDCPFAYURAQKDZ-UHFFFAOYSA-N 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- YEVQZPWSVWZAOB-UHFFFAOYSA-N 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(I)C(CBr)=C1 YEVQZPWSVWZAOB-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- XTFIVUDBNACUBN-UHFFFAOYSA-N 1,3,5-trinitro-1,3,5-triazinane Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)C1 XTFIVUDBNACUBN-UHFFFAOYSA-N 0.000 description 1
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 239000000028 HMX Substances 0.000 description 1
- TZRXHJWUDPFEEY-UHFFFAOYSA-N Pentaerythritol Tetranitrate Chemical compound [O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O TZRXHJWUDPFEEY-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- NDEMNVPZDAFUKN-UHFFFAOYSA-N guanidine;nitric acid Chemical compound NC(N)=N.O[N+]([O-])=O.O[N+]([O-])=O NDEMNVPZDAFUKN-UHFFFAOYSA-N 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- UZGLIIJVICEWHF-UHFFFAOYSA-N octogen Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)CN([N+]([O-])=O)C1 UZGLIIJVICEWHF-UHFFFAOYSA-N 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 239000011800 void material 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
- C06B21/0008—Compounding the ingredient
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/04—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
- C06B45/06—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
- C06B45/10—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
Definitions
- the present invention relates to a propellant for gas generators of the “base-bleed” type, that is to say for generators comprising a gas-generating charge to increase the range of the projectiles which are equipped with it and containing one or more granular or pulverulent solid bodies, at least one of which is an oxidant, and a binder, as well as a propellant of this kind.
- gas generators of the base-bleed type means gas-producing motor devices intended to increase the range of the projectiles which are equipped with it, and this without this effect being obtained by active acceleration of the projectile.
- base-bleed gas generators are used exclusively in the form of solid molded blocks ready for use; more often than not without the compositions from which they are made suitable for storage.
- Base-bleed gas generators are described in Belgian patent n ° 834903.
- the manufacture of the propellant masses or charges for “base-bleed” gas generators is carried out by known methods as follows.
- An oxidant such as ammonium perchlorate, and possibly other solid bodies, such as aluminum as fuel or the like, are mixed with a liquid binding agent, such as, for example, butadiene, so as to form a very viscous mass or paste, which is then optionally, after the addition of a hardener, molded and left to harden for 4-7 days at a temperature of 50-80 ° C.
- a disadvantage of this known process is that the composition from which the manufacture is carried out, that is to say the mixture of oxidant and binder, does not keep and therefore cannot be put into use. reserved as a result of spontaneous segregation of the mixture, on the one hand, and the risk of hardening, on the other.
- Another drawback consists in that the filling of the molds with the viscous composition for the formation of propellant charges of reduced dimensions proves to be rather laborious and is therefore not very economical, so that the molding of the composition in the form is preferred. large blocks, which are then cut into smaller blocks, worked in turn to give them the final shape, which, after all, is also very laborious and very uneconomical.
- the present invention aims to remedy the aforementioned drawbacks and aims, for this purpose, to make available to the interested parties a propellant of the kind concerned, i.e. for gas generators of the “base-bleed” type - or in other words generators provided with a gas-generating charge to increase the range of projectiles containing one or more granular or pulverulent solid bodies of which at least one is an oxidant, and a polymeric binder - which does not have the disadvantages and which can easily be stored for later use.
- a propellant of the kind concerned i.e. for gas generators of the “base-bleed” type - or in other words generators provided with a gas-generating charge to increase the range of projectiles containing one or more granular or pulverulent solid bodies of which at least one is an oxidant, and a polymeric binder - which does not have the disadvantages and which can easily be stored for later use.
- the propellant proposed is characterized in that said binder is an elastomer with thermoplastic deformation in the form of a triple block polymer chosen permi butadiene and styrene copolymers or isopropene and styrene with butadiene groups or isopropene and styrene regularly ordered, in that the propellant is in the form of a granular mass and in that the solid particles are coated with said elastomer thermoplastic deformation.
- Another object of the invention consists in the development of a process which lends itself to the manufacture of said propellant.
- This method according to the invention for the manufacture of propellants is characterized in that the binder is an elastomer with thermoplastic deformation in the form of a triple block polymer as defined above and in that this elastomer is supplemented with solvents, then intimately mixed with the solid ingredients and finally deposited on the latter by elimination of the solvents, so as to form a granular product.
- the invention also relates to a method for manufacturing propellant charges for “base-bleed” gas generators, that is to say generators provided with a gas-generating charge for increasing the range of the projectiles concerned, containing one or more granular or powdery solid ingredients, at least one of which is an oxidant and another is a binder, polymer characterized in that the mixture of said granulated solid ingredients and of said binder in the form of deformation elastomer thermoplastic is molded at high temperature and the body thus obtained is provided with an insulating jacket.
- the solvents used in implementing the method according to the invention are trichloroethane and trichlorethene.
- the oxidant is, for example, ammonium perchlorate, ammonium nitrate or another analogous compound.
- the essence of the invention therefore consists in that the solid components of the propellants in question are incorporated therein by coating by means of an elastomer with thermoplastic deformation, which allows the composition obtained to be preserved with a view to putting it in subsequent work for the manufacture of bodies of any suitable shape at high temperature and under high pressure, which is made possible by the presence of this elastomer with thermoplastic deformation in the form of a triple block polymer as defined above.
- the advantages of the solution according to the invention are as follows.
- the propellant can easily be produced in the form of granules for storage for later use.
- the grainy ingredients are easily mixed and their dispersion in a solvent does not present any problems. It is also a question of the subsequent transformation of the composition thus prepared into bodies of suitable shape, which also presents no difficulties.
- any risk of separation of the solid components is excluded thanks to the fact that the transformation of the granular composition into propellant charge by compression excludes any risk of sedimentation, and this contrary to the usual process based on the use of liquid binders, or phenomena of segregation by sedimentation are always to be feared.
- the triple block polymer is a copolymer of butadiene and styrene or isoprene and styrene with regularly ordered groups. The best results are obtained with elastomers with thermoplastic deformation which are soluble in the above-mentioned solvents.
- Another preferred embodiment of the invention provides that the removal of the solvent is carried out by evaporation.
- the elimination of the solvent results in the deposition of the thermoplastic deformation elastomer on the grains of the solid components, such as in particular the grains of the oxidant so that, according to this embodiment, the elimination of the solvent and the deposition of the elastomer takes place simultaneously.
- these two processes namely the deposition of the estomer and the elimination of the solvent, take place successively, the elastomer being precipitated on the particles of the solid components by addition of a liquid. non-solvent and the mixture of the solvent and non-solvent liquid then being removed by suction.
- This embodiment is therefore characterized in that the elastomer is first precipitated in the suspension so as to deposit on the grains of the solid bodies and the mixture of the liquid bodies present in the composition is then removed by suction, for example by means of a suction filter.
- the non-dissolving liquid is for example acetone.
- the mixture of solid bodies in the composition according to the invention contains, in addition to the oxidant, also other bodies rich in energy to regulate the rate of combustion of the propellant charges produced from the composition.
- these are, for example, nitroguanidine, guanidine nitrate, hexogen, octogen or pentaerythrite tetranitrate.
- composition according to the invention may, alongside combustion moderators and stabilizers added at one or the other stage of its preparation, also contain a plasticizer for the binder, such as trioctylphosphate.
- a plasticizer for the binder such as trioctylphosphate.
- the mixing of all the components of the composition according to the invention is preferably carried out at high temperature, the final homogeneous kneading at the last stage must in any case be carried out at a temperature of approximately 80 ° C.
- 550 g of granular ammonium perchlorate (oxidizing agent) and 250 g of granular nitroguanidine (auxiliary fuel) are intimately mixed in a horizontal duplicating mixer.
- a 10% solution of butadiene and styrene copolymer in trichloroethane is added to the mixture thus obtained, the total amount of butadiene and styrene copolymer thus added being equal to about 180 g.
- the mixture of granular solids and the 10% solution of butadiene and styrene copolymer in the trichloroethane thus obtained is then made homogeneous by thorough kneading.
- the suspension thus obtained is, after the addition of 20 g of trioctylphosphate as plasticizer, again kneaded at a temperature of about 80 ° C, after which the solvent is removed by evaporation under vacuum.
- Another method of removing the solvent, other than removing it by evaporation consists in adding a sufficient amount of a non-dissolving liquid, such as acetone, to cause the precipitation of the copolymer of butadiene and styrene. dissolved and its deposition on the grains of the solid components of the dispersion, after which the mixture of trichloroethane and acetone is separated from the solid components by suction filtration.
- a non-dissolving liquid such as acetone
- said granular composition according to the invention is obtained, the grains of which are coated with a layer of binder, that is to say with a layer of butadiene and styrene copolymer.
- the last remnants of solvent still present in the granular mass with grains wrapped in copolymer are eliminated by drying continued for at least 12 hours at a temperature of approximately 50 ° C., which, in this case, that is to say to say in the presence of the relatively small quantities obtained in the example of implementation described here, is carried out for example in a dryer for lacquers. After this drying, the content of volatile body composition is less than 0.1%.
- the granular composition according to a particular embodiment of the invention consists of solid ingredients, such as ammonium perchlorate as an oxidant and nitroguanidine as an auxiliary fuel and speed regulator combustion, the grains of which are coated with a layer of butadiene and styrene copolymer as a binder with a low content of trioctylphosphate as a plasticizer.
- the percentages of the various components of the preparation are as follows: 55% of ammonium perchlorate, 25% of nitroguanidine, 2% of tricotylphosphate and 18% of copolymer of butadiene and styrene or isoprene and styrene.
- composition according to the invention intended for the manufacture of propellant charges lends itself to practically unlimited conservation without risk of alteration of its properties. It is recommended to homogenize it by mixing before its subsequent use. According to the invention, it lends itself to the production of propellant charges for gas generators of the “base-bleed” type by compression in a mold and coating with an insulating envelope, applied thereto either by compression in the mold, or by application. later after leaving the mold.
- the bodies thus obtained have, for example, a length of 130 mm and a diameter of 120 mm and are provided with an axial channel with a diameter of 43.5 mm, intended for the evacuation by regular jet of the gases formed by the combustion of the propellant charge during the flight of the projectile which is equipped with it.
- the propellant charge may consist of two semi-cylindrical bodies, each provided with a longitudinal groove of semi-circular section, and this so that the two grooves of the two semi-cylindrical bodies joined in the gas generator form the aforesaid channel. gas evacuation.
- gas flow pressure approximately 0.22 MPa at a combustion speed of 1.11 mm / second; 0.89 MPa at a combustion speed of 3.0 mm / second; 1.37 MPa at a combustion speed of 3.4 mm / second, etc.
- the maximum tensile strength of the product according to the invention is, at 20 ° C and an elongation speed of 50 m / second, equal to 0.51 N / mm 2 with a corresponding elongation which is greater than 150%.
- Specific weight at 100-140 ° C under a pressure of 20-50 MPa about 1.52 g / cm3.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Molecular Biology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Glanulating (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Cosmetics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Glass Compositions (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Catalysts (AREA)
- Air Bags (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT81200144T ATE7687T1 (de) | 1980-02-21 | 1981-02-06 | Treibladung fuer gaserzeuger des ''base-bleed''typs und verfahren zu ihrer herstellung. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3006475 | 1980-02-21 | ||
| DE3006475A DE3006475C2 (de) | 1980-02-21 | 1980-02-21 | Treibstoff für Base-Bleed-Gasgeneratoren, Verfahren zu seiner Herstellung sowie zur Herstellung eines Treibsatzes aus diesem Treibstoff |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0034849A2 EP0034849A2 (fr) | 1981-09-02 |
| EP0034849A3 EP0034849A3 (en) | 1982-08-04 |
| EP0034849B1 EP0034849B1 (fr) | 1984-05-30 |
| EP0034849B2 true EP0034849B2 (fr) | 1989-11-29 |
Family
ID=6095176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81200144A Expired EP0034849B2 (fr) | 1980-02-21 | 1981-02-06 | Agent propulsif pour des générateurs de gaz du type à "base-bleed" et procédé pour sa fabrication |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4452145A (ja) |
| EP (1) | EP0034849B2 (ja) |
| AT (1) | ATE7687T1 (ja) |
| BR (1) | BR8101052A (ja) |
| CA (1) | CA1173653A (ja) |
| DE (1) | DE3006475C2 (ja) |
| ES (1) | ES499651A0 (ja) |
| GR (1) | GR71625B (ja) |
| IL (1) | IL62123A (ja) |
| IN (1) | IN154057B (ja) |
| NO (1) | NO150678C (ja) |
| PT (1) | PT72555B (ja) |
| SG (1) | SG83186G (ja) |
| TR (1) | TR21297A (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3625412A1 (de) * | 1986-07-26 | 1988-02-04 | Messerschmitt Boelkow Blohm | Verfahren zur herstellung eines kunststoffgebundenen explosivstoffs |
| US5056436A (en) * | 1988-10-03 | 1991-10-15 | Loral Aerospace Corp. | Solid pyrotechnic compositions for projectile base-bleed systems |
| GB2310427B (en) * | 1996-02-22 | 2000-06-28 | John Douglas Michael Wraige | Energetic compositions |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2999743A (en) * | 1960-08-17 | 1961-09-12 | Du Pont | Deformable self-supporting explosive composition |
| GB1082641A (en) * | 1963-03-14 | 1967-09-06 | Secr Defence | Explosive compositions |
| US3480488A (en) * | 1966-08-01 | 1969-11-25 | United Aircraft Corp | Self-regulating coating process for propellant materials |
| US3449179A (en) * | 1966-09-07 | 1969-06-10 | Asahi Chemical Ind | Flexible explosive compositions containing block copolymers |
| US3539377A (en) * | 1968-05-07 | 1970-11-10 | Us Army | Method for coating oxidizer particles with a polymer |
| DE1796118C3 (de) * | 1968-09-04 | 1978-08-17 | Dynamit Nobel Ag, 5210 Troisdorf | Hülsenloser Treibladungs-Preßling und Verfahren zu dessen Herstellung |
| US3954526A (en) * | 1971-02-22 | 1976-05-04 | Thiokol Corporation | Method for making coated ultra-fine ammonium perchlorate particles and product produced thereby |
| DE2221216C3 (de) * | 1972-04-29 | 1980-09-25 | Dynamit Nobel Ag, 5210 Troisdorf | Verfahren zur Herstellung von Pulverkörpern fur Treibladungen |
| US4124418A (en) * | 1973-04-19 | 1978-11-07 | Thiokol Corporation | Siloxane-coated ammonium perchlorate and propellant compositions made therewith |
| FR2328938A1 (fr) * | 1975-10-22 | 1977-05-20 | Gunners Nils Eric | Projectile lance par canon et pourvu d'un systeme reduisant la trainance de base |
-
1980
- 1980-02-21 DE DE3006475A patent/DE3006475C2/de not_active Expired
-
1981
- 1981-02-06 AT AT81200144T patent/ATE7687T1/de active
- 1981-02-06 EP EP81200144A patent/EP0034849B2/fr not_active Expired
- 1981-02-11 IN IN154/CAL/81A patent/IN154057B/en unknown
- 1981-02-12 IL IL62123A patent/IL62123A/xx not_active IP Right Cessation
- 1981-02-17 US US06/234,603 patent/US4452145A/en not_active Expired - Lifetime
- 1981-02-17 GR GR64164A patent/GR71625B/el unknown
- 1981-02-19 NO NO810563A patent/NO150678C/no unknown
- 1981-02-19 TR TR21297A patent/TR21297A/xx unknown
- 1981-02-20 ES ES499651A patent/ES499651A0/es active Granted
- 1981-02-20 CA CA000371396A patent/CA1173653A/fr not_active Expired
- 1981-02-20 BR BR8101052A patent/BR8101052A/pt unknown
- 1981-02-20 PT PT72555A patent/PT72555B/pt unknown
-
1986
- 1986-10-14 SG SG831/86A patent/SG83186G/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3006475C2 (de) | 1986-10-30 |
| EP0034849A2 (fr) | 1981-09-02 |
| NO810563L (no) | 1981-08-24 |
| DE3006475A1 (de) | 1981-10-22 |
| NO150678C (no) | 1984-11-28 |
| BR8101052A (pt) | 1981-08-25 |
| SG83186G (en) | 1989-09-29 |
| IL62123A (en) | 1985-06-30 |
| ATE7687T1 (de) | 1984-06-15 |
| TR21297A (tr) | 1984-03-22 |
| US4452145A (en) | 1984-06-05 |
| CA1173653A (fr) | 1984-09-04 |
| EP0034849A3 (en) | 1982-08-04 |
| PT72555A (fr) | 1981-03-01 |
| IN154057B (ja) | 1984-09-15 |
| ES8201513A1 (es) | 1981-12-16 |
| EP0034849B1 (fr) | 1984-05-30 |
| GR71625B (ja) | 1983-06-20 |
| PT72555B (fr) | 1982-02-11 |
| ES499651A0 (es) | 1981-12-16 |
| NO150678B (no) | 1984-08-20 |
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