Preparation of diamine via the preparation of aminonitrile
    7.
    发明授权
    Preparation of diamine via the preparation of aminonitrile 有权
    通过制备氨基腈制备二胺

    公开(公告)号:US09079823B2

    公开(公告)日:2015-07-14

    申请号:US13982694

    申请日:2012-02-03

    申请人: Philippe Leconte

    发明人: Philippe Leconte

    IPC分类号: C07C209/48 C07C253/30

    摘要: A continuous method (P) for preparing diamine is described. The method includes reacting the corresponding alkene nitrile with the corresponding monoamine in order to form the corresponding aminonitrile. The monoamine can be introduced in molecular excess with respect to the alkene nitrile, wherein the unreacted monoamine is recirculated to the reaction; followed by reducing the aminonitrile produced by hydrogen in the presence of at least one alkali-metal hydroxide, water, and a hydrogenation catalyst; and purifying the diamine.

    摘要翻译: 描述了制备二胺的连续方法(P)。 该方法包括使相应的烯腈与相应的单胺反应以形成相应的氨基腈。 单胺可以相对于烯腈分子过量引入,其中未反应的单胺再循环到反应中; 然后在至少一种碱金属氢氧化物,水和氢化催化剂的存在下还原氢气产生的氨基腈; 并纯化二胺。

    Polyamine-based corrosion inhibitors
    9.
    发明申请
    Polyamine-based corrosion inhibitors 审中-公开
    多胺类腐蚀抑制剂

    公开(公告)号:US20060180794A1

    公开(公告)日:2006-08-17

    申请号:US11058007

    申请日:2005-02-15

    IPC分类号: C23F11/00

    摘要: Compounds having N-oxide, quaternary ammonium, and/or betaine functionality according to formulas (1)-(4) are effective corrosion inhibitors, suitable for use in any of a variety of applications such as automotive cooling systems, heating boilers, drilling of oil wells, and the handling, transportation and storage of crude petroleum and various petroleum fractions. The groups R1-R5 may be certain hydrocarbyl groups. In formulas (1) and (3), R3 may also be (CH2)p—COO− in which p is either 1 or 2, and R2 may also be (CH2)p—COO− in formulas (3) and (4). In the compounds of formulas (1) and (2), R2 may also be a polyhydroxyalkyl group of formula (A), shown below.

    摘要翻译: 具有式(1) - (4)的N-氧化物,季铵和/或甜菜碱功能的化合物是有效的缓蚀剂,适用于各种应用中的任何一种,如汽车冷却系统,加热锅炉, 油井,以及原油和各种石油馏分的处理,运输和储存。 基团R 1 -R 5可以是某些烃基。 在式(1)和(3)中,R 3也可以是(CH 2)2 - COO - >其中p是1或2,R 2也可以是(CH 2)2 - SUP(3)和(4))。 在式(1)和(2)的化合物中,R 2也可以是如下所示的式(A)的聚羟烷基。