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公开(公告)号：EP1171403B1
公开(公告)日：2003-04-16
申请号：EP99965701.8
申请日：1999-12-29
申请人： Nexplo Bofors AB
发明人： SJÖBERG, Per
IPC分类号： C06D5/06 , C06B25/34 , C01B21/082 , B60R21/26
摘要： The present invention relates to a process for the preparation of gas-releasing pyrotechnical compositions that are intended primarily for use in gas-actuated car safety devices such as air-bag assemblies, safety-belt tighteners, inflatable neck supports, etc. and which can be recovered if they are not actively used. The invention also relates to these compositions themselves. The invention is mainly characterized by the use of guanidine dinitramide, possibly combined with guanyl urea dinitramide, as gas-generating substance(s) in products of the said type.
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公开(公告)号：EP0807241B1
公开(公告)日：2002-07-31
申请号：EP95944293.0
申请日：1995-12-22
申请人： Nexplo Bofors AB
发明人： NYQVIST, Jan-Olof
CPC分类号： C06B21/0091 , Y10S149/124
摘要： The present invention relates to a method of working up and recovering returned explosives which are principally of the military type and which contain both fusible and non-fusible crystalline substances. In accordance with the invention, the returned explosive is treated in a multi-stage process which includes a first leaching stage for removing the non-crystalline, preferably fusible, component of the explosive in the form of trotyl, wax or plastic. The substance used in the leaching stage, principally toluene, does not affect the crystalline components of the explosive. The collected leaching liquid is separated off and the toluene, together with its dissolved content of trotyl or wax, is conveyed onwards for working up. The toluene which is recovered during the working up is returned to the process while the remaining filtrate from the filtration stage is treated with solvent which dissolves the crystalline high-energy explosives octogen and hexogen, respectively, which are relevant in this connection, which explosives, in a subsequent process stage, are precipitated out in the form of new crystals which, after a possible recrystallization, are ready to be reused. The solvent which is used in this connection is returned to the process.
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公开(公告)号：EP1472199A1
公开(公告)日：2004-11-03
申请号：EP03700650.9
申请日：2003-01-13
申请人： Nexplo Bofors AB
发明人： JOHANSSON, Sven-Eric
摘要： There is provided a decoppering agent that is incorporated into the propellant to remove copper from the rifling of the internal bore of a gun barrel. The decoppering agent consists essentially of a lead-free pulverized additive mixed together with the other propellant compounds. We have found that a mixture of tin and bismuth is a very good decoppering agent. Especially in the ratio 42% Sn/58%Bi, the melting point for this combination is 138 degree C. Much lower than each of the components. It can be all kinds of suitable tin and bismuth compounds. The bismuth and tin either vaporizes or liquefies when the propellant is ignited and either embrittles or dissolves the copper deposits facilitating removal.
摘要翻译： 提供了一种消旋剂，并入推进剂中以从枪筒内孔的膛线中除去铜。 脱铜剂主要由与其他推进剂化合物混合在一起的无铅粉状添加剂组成。 我们发现锡和铋的混合物是非常好的脱铜剂。 特别是在42％Sn / 58％Bi的比例下，该组合的熔点为138℃。比各组分低得多。 它可以是各种合适的锡和铋化合物。 当推进剂被点燃时，铋和锡或者蒸发或者液化，并且使易于去除的铜沉积物变脆或溶解。
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公开(公告)号：EP1409437A1
公开(公告)日：2004-04-21
申请号：EP02717256.8
申请日：2002-03-28
申请人： Nexplo Bofors AB
发明人： DAHLBERG, Johan , SELIN, Lennart
CPC分类号： B26F1/24 , C06B21/0033 , C06B45/00 , F42B5/16
摘要： The present invention relates to a method and a device for producing perforated propellant in the geometric form of block, stick, slab, cylindrical or tubular propellant (2) with high charge density and high progressivity. The propellant as claimed in the present invention is characterised by a large number of perforations, densely and evenly distributed over the entire propellant segments, made by perforation members (6) that are pressed down into the propellant. The perforations are thereby made in a plurality of steps with a predetermined step feed between each perforation operation. The device as claimed in the present invention also comprises a mobile pin die (5) away from but facing the feed path (1) for the propellant (2), and containing at least one row of pins for perforation of the propellant whereby each such row of pins comprises the number of pins (6) required to cover the complete width of the propellant segment across its direction of advance. Between each perforation operation the propellant is step fed by a step feed device (15) a distance equivalent to the distance between two desired perforations multiplied by the number of rows of pins arranged across the direction of advance of the propellant. Additionally, in the propellant as claimed in the present invention the distance between two burning surfaces of the propellant shall be equal to double the desired burning length (2b).
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公开(公告)号：EP1379482A1
公开(公告)日：2004-01-14
申请号：EP02700974.5
申请日：2002-03-01
申请人： Nexplo Bofors AB
发明人： HAFSTRAND, Anders
IPC分类号： C06B45/02
摘要： The present invention relates to a method for producing propellant powder charges intended for heavy barrel weapons, such as canons and howitzers, and with a high degree of filling and a high energy content, and also to propellant powder charges produced in accordance with this method. The charges according to the invention are distinguished by the fact that 70 to 95% of their weight consists of a more coarsely grained powder and 30 to 5% consists of a granular powder with a smaller grain size. These two powders have the same of different chemical composition, and one or more of them can be surface-inhibited.
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公开(公告)号：EP1171403A1
公开(公告)日：2002-01-16
申请号：EP99965701.8
申请日：1999-12-29
申请人： Nexplo Bofors AB
发明人： SJÖBERG, Per
IPC分类号： C06D5/06 , C06B25/34 , C01B21/082 , B60R21/26
摘要： The present invention relates to a process for the preparation of gas-releasing pyrotechnical compositions that are intended primarily for use in gas-actuated car safety devices such as air-bag assemblies, safety-belt tighteners, inflatable neck supports, etc. and which can be recovered if they are not actively used. The invention also relates to these compositions themselves. The invention is mainly characterized by the use of guanidine dinitramide, possibly combined with guanyl urea dinitramide, as gas-generating substance(s) in products of the said type.
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