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    Synthesis of energetic thermoplastic elastomers containing both polyoxirane and polyoxetane blocks
    8.
    发明申请
    Synthesis of energetic thermoplastic elastomers containing both polyoxirane and polyoxetane blocks 审中-公开
    合成含有聚氧化乙烯和聚氧乙烯嵌段的高能热塑性弹性体

    公开(公告)号：US20060157173A1

    公开(公告)日：2006-07-20

    申请号：US11354191

    申请日：2006-02-14

    申请人： Andrew Sanderson ,  Wayne Edwards ,  Louis Cannizzo ,  Robert Wardle

    发明人： Andrew Sanderson ,  Wayne Edwards ,  Louis Cannizzo ,  Robert Wardle

    IPC分类号： C06B45/20

    CPC分类号： C08G18/3206 ,  C06B45/105 ,  C08G18/48 ,  C08G18/4833 ,  C08G18/5021 ,  C08G18/7621 ,  C08G65/18 ,  C08G65/22

    摘要： This thermoplastic elastomer is present in a substantially solid state suitable for use as a binder for a propellant, explosive, and/or gas generant of a supplemental restraint system. The thermoplastic elastomer is formed from a composition including A blocks which are crystalline at temperatures below about 75° C. and B blocks which are amorphous at temperatures above about −20° C. The A blocks are derived from oxetane derivatives and the B blocks are derived from oxiranes and derivatives thereof. The A blocks and B-blocks are end-capped with a diisocyanate having a first isocyanate moiety that is substantially more reactive with the terminal groups of the blocks than the second isocyanate moiety, whereby the more reactive first isocyanate moiety is capable of reacting with the terminal groups of the blocks, leaving the less reactive second isocyanate moiety free and unreacted. The end-capped A blocks and the end-capped B blocks are linked together with a linking compound having two isocyanate-reactive groups which are sufficiently unhindered to react with the free and unreacted isocyanate moieties of the end-capped polymers.

    摘要翻译： 该热塑性弹性体以基本固态的形式存在，适合用作补充约束系统的推进剂，爆炸物和/或气体发生剂的粘合剂。 热塑性弹性体由包括在低于约75℃的温度下结晶的A嵌段的组合物形成，以及在高于约-20℃的温度下是无定形的B嵌段.A嵌段衍生自氧杂环丁烷衍生物，B嵌段是 衍生自环氧乙烷及其衍生物。 A嵌段和B嵌段用具有第一异氰酸酯部分的二异氰酸酯封端，所述第一异氰酸酯部分与第二异氰酸酯部分的嵌段端基基本上更具反应性，由此反应性较高的第一异氰酸酯部分能够与 这些嵌段的末端基团，使较少反应性的第二异氰酸酯部分游离并未反应。 封端的A嵌段和封端的B嵌段与具有两个异氰酸酯反应性基团的连接化合物连接在一起，这两个异氰酸酯反应性基团充分地不受阻碍地与封端的聚合物的游离的和未反应的异氰酸酯部分反应。

    Extraction and recovery of nitramines from propellants, explosives, and pyrotechnics
    9.
    发明授权
    Extraction and recovery of nitramines from propellants, explosives, and pyrotechnics 失效
    从推进剂，爆炸物和烟火中萃取和回收硝胺

    公开(公告)号：US06414143B1

    公开(公告)日：2002-07-02

    申请号：US09505872

    申请日：2000-02-17

    申请人： Louis Cannizzo ,  Lew Huntsmann

    发明人： Louis Cannizzo ,  Lew Huntsmann

    IPC分类号： C07D25502

    CPC分类号： A62D3/35 ,  A62D2101/06 ,  C06B21/0091 ,  Y10S149/124

    摘要： Nitramine oxidizers are recovered from propellant, explosive, and pyrotechnic materials with a concentrated mineral acid bath, preferably comprising 70 to 90 wt. % nitric acid, that serves to dissolve the nitramine oxidizers into solution and permit filtration of the binder therefrom. The recovery process is conducted in the absence of organic solvents.

    摘要翻译： 使用浓缩的无机酸浴从推进剂，爆炸物和烟火材料中回收硝胺氧化剂，优选包含70至90wt。 硝酸，用于将硝胺氧化剂溶解在溶液中，并允许过滤粘合剂。 回收过程在没有有机溶剂的情况下进行。