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    Liquid propellant
    2.
    发明授权
    Liquid propellant 有权
    液体推进剂

    公开(公告)号：US06254705B1

    公开(公告)日：2001-07-03

    申请号：US09258390

    申请日：1999-02-26

    Applicant: Kjell Anflo ,  Niklas Wingborg

    Inventor： Kjell Anflo ,  Niklas Wingborg

    IPC: C06B4700

    CPC classification number: C06B47/00 ,  C06B25/34 ,  C06B31/00 ,  C06D5/08

    Abstract: Liquid propellants for the purpose of generating hot gases are described, which propellants comprise solution of a dinitramide compound and a fuel, and are especially suited for space applications, and exhibit the following properties exhibit the following properties: low toxicity; no toxic or combustible vapors; high theoretical specific impulse (as compared to hydrazine); high density (as compared to hydrazine); easily ignitable; storable at a temperature between +10° C. and +50° C.; low sensitivity.

    Abstract translation: 描述了用于产生热气体的液体推进剂，其中推进剂包括二硝化合物和燃料的溶液，并且特别适用于空间应用，并且具有以下性质：低毒性; 无有毒或可燃蒸气; 高理论比冲（与肼相比）; 高密度（与肼相比）; 容易点燃; 可在+ 10℃和+ 50℃之间的温度下储存。 灵敏度低。

    Method of preparing dinitramidic acid and salts thereof
    3.
    发明授权
    Method of preparing dinitramidic acid and salts thereof 失效
    制备二硝酸的方法及其盐

    公开(公告)号：US5976483A

    公开(公告)日：1999-11-02

    申请号：US983462

    申请日：1998-01-13

    Applicant: Abraham Langlet ,  Henric Ostmark ,  Niklas Wingborg

    Inventor： Abraham Langlet ,  Henric Ostmark ,  Niklas Wingborg

    IPC: C01B21/087 ,  C01B21/082 ,  C06B25/00 ,  C06B31/00 ,  C06B41/00 ,  C01B21/20

    CPC classification number: C06B41/00 ,  C01B21/082 ,  C06B25/00 ,  C06B31/00

    Abstract: The invention relates to a method of preparing dinitramidic acid HN(NO.sub.2).sub.2 and salts thereof having the formula M.sup.+n (.sup.- N(NO.sub.2).sub.2).sub.n, wherein M is a metal cation or a nitrogen-containing cation and n=1-3. The dinitramide salt can be used as oxidiser in solid propellants. Dinitramidic acid is prepared by nitration of a compound selected from a group consisting of NH.sub.2 NO.sub.2, NH.sub.4 NH.sub.2 CO.sub.2 ; NH.sub.2 SO.sub.3 H, NH(SO.sub.3 H).sub.2, N(SO.sub.3 H).sub.3, and its salts with metal cations or organic cations, e.g. NH(SO.sub.3 NH.sub.4).sub.2, and other products formed when ammonia is reacted with sulphuric trioxide, with a common nitrating acid such as nitric acid/sulphuric acid or nitric acid/acetic anhydride. The invention also relates to a method of preparing dinitramide salt, comprising neutralisation of dinitramidic acid with a neutralising agent, e.g. ammonia, and recovery of the dinitramide salt from a mixture of salts formed in the neutralisation. An aqueous solution of the salt mixture is passed through a column containing an adsorbing agent which adsorbs the dinitramide salt and is selected from a class consisting of activated carbon, silica gel and zeolites. The dinitramide salt is eluted with an elution agent consisting of hot water and/or a polar organic solvent, e.g. acetone, acetonitrile, 2-propanol and other lower alcohols and mixtures thereof.

    Abstract translation: PCT No.PCT / SE96 / 00976 Sec。 371日期1998年1月13日 102（e）1998年1月13日PCT PCT 1996年7月26日PCT公布。 出版物WO97 / 06099 日期1997年2月20日本发明涉及制备具有式M + n（-N（NO 2）2）n的二硝基酸HN（NO 2）2及其盐的方法，其中M为金属阳离子或含氮 阳离子，n = 1-3。 二硝酸盐可用作固体推进剂中的氧化剂。 二硝基甲酸通过硝化选自由NH 2 NO 2，NH 4 NH 2 CO 2， NH 2 SO 3 H，NH（SO 3 H）2，N（SO 3 H）3及其与金属阳离子或有机阳离子的盐。 NH（SO3NH4）2，和氨与三氧化硫反应形成的其他产物与硝酸/硫酸或硝酸/乙酸酐等常见硝酸反应生成。 本发明还涉及一种制备二硝酸盐的方法，其包括用中和剂中和二硝基甲酸，例如， 氨和从中和形成的盐的混合物中回收二硝酸盐。 将盐混合物的水溶液通过含有吸附二硝酸盐的吸附剂的柱，并且选自活性炭，硅胶和沸石。 用由热水和/或极性有机溶剂组成的洗脱剂洗脱二硝
    化盐，例如， 丙酮，乙腈，2-丙醇等低级醇及其混合物。

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