METHOD FOR SYNTHESIZING AN N-UNSUBSTITUTED OR N-SUBSTITUTED AZIRIDINE
    84.
    发明申请
    METHOD FOR SYNTHESIZING AN N-UNSUBSTITUTED OR N-SUBSTITUTED AZIRIDINE 审中-公开
    合成N-取代或N-取代的AZIRIDINE的方法

    公开(公告)号:US20100191000A1

    公开(公告)日:2010-07-29

    申请号:US12665509

    申请日:2008-06-18

    IPC分类号: C07D203/08 C25B3/02

    CPC分类号: C07D203/08 C07D203/02

    摘要: Process for preparing an N-unsubstituted or N-substituted aziridine of the formula which comprises reacting an olefin of the formula I where R1 to R5 are each, independently of one another, hydrogen, a linear or branched alkyl radical having from 1 to 16 carbon atoms, a hydroxyalkyl radical having from 1 to 4 carbon atoms, a cycloalkyl radical having from 5 to 7 carbon atoms, a benzyl or phenyl radical which in each case may be substituted in the o, m or p position of the phenyl radical by methoxy, hydroxy, chlorine or alkyl radicals having from 1 to 4 carbon atoms and the radical R1 or R2 together with the radical R3 or R4 may be closed to form a 5- to 12-membered ring or the radicals R1 and R2 may be closed to form a 5- to 12-membered ring, with ammonia or a primary amine of the formula R5NH2 in the presence of iodine or bromine.

    摘要翻译: 制备下式的N-未取代的或N-取代的氮丙啶的方法,其包括使式I的烯烃(其中R 1至R 5)彼此独立地彼此独立地为氢,具有1至16个碳原子的直链或支链烷基 原子,具有1至4个碳原子的羟基烷基,具有5至7个碳原子的环烷基,苄基或苯基,其在每种情况下可以在苯基的o,m或p位置被甲氧基取代 ,羟基,氯或具有1至4个碳原子的烷基和基团R 1或R 2与基团R 3或R 4一起可以封闭以形成5至12元环,或者基团R 1和R 2可以被封闭 在碘或溴的存在下与氨或式R 5 NH 2的伯胺形成5-至12元环。

    Method for improving a piperazine colour stability
    85.
    发明授权
    Method for improving a piperazine colour stability 有权
    改善哌嗪颜色稳定性的方法

    公开(公告)号:US07758730B2

    公开(公告)日:2010-07-20

    申请号:US11659531

    申请日:2005-08-03

    IPC分类号: B01D3/42 C07D295/023

    CPC分类号: C07D295/02 Y10S203/20

    摘要: The present invention relates to a process for improving the color stability by postpurifying piperazine, the steps comprising preparing an aqueous piperazine solution by introducing solid or liquid piperazine having a degree of purity of at least 90% by weight in water; removing the water by distillation; isolating the piperazine with a predefined maximum residual content of water. The invention further provides a rapid test of aging for checking the improvement in the color stability.

    摘要翻译: 本发明涉及通过将哌嗪后期纯化来改善颜色稳定性的方法,包括通过在水中引入纯度至少为90重量%的固体或液体哌嗪来制备哌嗪水溶液的步骤; 通过蒸馏除去水分; 用预定的最大残留含量的水分离哌嗪。 本发明进一步提供了用于检验颜色稳定性改进的老化的快速测试。

    METHOD FOR PRODUCING ETHYLENEDIAMINE
    88.
    发明申请
    METHOD FOR PRODUCING ETHYLENEDIAMINE 有权
    生产乙烯二胺的方法

    公开(公告)号:US20100094057A1

    公开(公告)日:2010-04-15

    申请号:US12529107

    申请日:2008-02-28

    IPC分类号: C07C209/48

    CPC分类号: C07C209/48 C07C211/10

    摘要: The invention relates to a process for preparing ethylenediamine by hydrogenation of aminoacetonitrile over a catalyst, wherein the hydrogenation is carried out in a solution comprising aminoacetonitrile, water in a proportion of from 0 to 60% by weight and a solvent and the aminoacetonitrile comprised in the solution is fed into the reaction vessel at a rate which is not greater than the rate at which the aminoacetonitrile reacts with hydrogen in the hydrogenation.

    摘要翻译: 本发明涉及一种通过氨基乙腈在催化剂上氢化制备乙二胺的方法,其中氢化是在包含氨基乙腈的溶液中,以0至60重量%的比例的水和溶剂和包含在其中的氨基乙腈 溶液以不大于氨基乙腈在氢化中与氢反应的速率进料到反应容器中。

    Method of producing benzophenoneimines
    89.
    发明授权
    Method of producing benzophenoneimines 有权
    生产二苯甲酮亚胺的方法

    公开(公告)号:US07683214B2

    公开(公告)日:2010-03-23

    申请号:US12282277

    申请日:2007-03-01

    IPC分类号: C07C249/02

    CPC分类号: C07C249/02 C07C251/16

    摘要: A process for the preparation of benzophenonimine (BPI) of the general formula I where R1 and R2 are C1- to C4-alkoxy, C1- to C2-alkylamine and C2- to C4-dialkylamine and m and n are integers from 0 to 5 and R1 and R2, independently of one another, may be identical or different, by reacting benzophenone (BP) of the general formula II where R1, R2, m and n have the abovementioned meanings, in ammonia and in the presence of titanium dioxide, the titanium dioxide being present substantially in the anatase modification.

    摘要翻译: 制备通式I的二苯甲酮亚胺(BPI)的方法,其中R 1和R 2是C 1 -C 4 - 烷氧基,C 1至C 2 - 烷基胺和C 2 -C 4 - 二烷基胺,m和n是0至5的整数 并且R 1和R 2可以相同或不同,通过使其中R1,R2,m和n具有上述含义的通式II的二苯甲酮(BP)在氨和二氧化钛存在下反应, 二氧化钛基本上存在锐钛矿改性。