Process for treating an acidic waste water stream
    1.
    发明授权
    Process for treating an acidic waste water stream 失效
    处理酸性废水流的方法

    公开(公告)号:US4035293A

    公开(公告)日:1977-07-12

    申请号:US596708

    申请日:1975-07-17

    摘要: Disclosed is a process for purifying an effluent containing acids such as phosphonic and phosphoric acids by the addition of CaO or Ca(OH).sub.2 in an amount ranging from 55-93 per cent by weight basis acids at a temperature of 35.degree. to 100.degree. C to a pH of 8 to 12. After removing the precipitated material, the effluent can be neutralized with CO.sub.2 gas. The precipitate can be calcined to tri calcium phosphate.

    摘要翻译: 公开了一种通过在35〜100℃的温度下添加量为55-93重量%的CaO或Ca(OH)2来纯化含有酸如膦酸和磷酸的流出物的方法。 C至pH为8至12.在除去沉淀的材料后,流出物可用CO 2气体中和。 可以将沉淀物煅烧成三磷酸钙。

    Conversion of 2-dialkylamino-3H-azepines into epsilon caprolactams
    3.
    发明授权
    Conversion of 2-dialkylamino-3H-azepines into epsilon caprolactams 失效
    2-二烷基氨基-3H-氮杂转化为ε己内酰胺

    公开(公告)号:US4110323A

    公开(公告)日:1978-08-29

    申请号:US741838

    申请日:1976-11-15

    IPC分类号: C07D201/02 C07D223/12

    CPC分类号: C07D201/02 C07D223/12

    摘要: This invention relates to a process of catalytically converting nitrobenzene to 2-amino-3H-azepines by the reaction of the nitrobenzene with trisaminophosphine and an amine of the formula HNR'.sub.2, where R' is lower alkyl containing 1 to 6 carbon atoms.In addition, this invention concerns the catalytic hydrogenation of 2-amino-3H-azepine to epsilon caprolactam.

    摘要翻译: 本发明涉及通过硝基苯与三氨基膦的反应和式HNR'2的胺反应将硝基苯催化转化为2-氨基-3H-吖庚因的方法,其中R'是含有1至6个碳原子的低级烷基。