Process for making caprolactam
    1.
    发明授权
    Process for making caprolactam 失效
    制备己内酰胺的方法

    公开(公告)号:US07060820B1

    公开(公告)日:2006-06-13

    申请号:US11083728

    申请日:2005-03-18

    IPC分类号: C07D201/02

    CPC分类号: C07D201/08

    摘要: Lactams, in particular ε-caprolactam, are produced by the hydrolytic cyclization of aminonitriles, in particular 6-aminocapronitrile, in the vapor phase in a plurality of adiabatic fixed bed reaction zones arranged in succession wherein at least a portion of the heat of the exothermic reaction is removed between each of the successive reaction zones. Conducting the reaction in such a manner requires less capital for the reactor itself. It has also been found that the product exiting such a reaction system can be directly fed to a distillation unit without the need of additional cooling or storing.

    摘要翻译: 内酰胺,特别是ε-己内酰胺,是通过氨基腈,特别是6-氨基己腈在气相中水解环化生成的,所述多个绝热固定床反应区依次布置,其中放热的至少一部分热量 在每个连续反应区之间除去反应。 以这种方式进行反应需要较少的反应堆本身资本。 还已经发现,离开这种反应体系的产物可以直接进料到蒸馏装置,而不需要额外的冷却或储存。

    Method for making caprolactam from impure 6-aminocapronitrile
    2.
    发明授权
    Method for making caprolactam from impure 6-aminocapronitrile 失效
    从不纯的6-氨基己腈制备己内酰胺的方法

    公开(公告)号:US07390897B2

    公开(公告)日:2008-06-24

    申请号:US11083715

    申请日:2006-02-10

    IPC分类号: C07D201/08

    CPC分类号: C07D223/10

    摘要: The invention relates to the field of production of lactams from aminonitriles, and in particular to the production of ε-caprolactam by the vapor phase hydrolytic cyclization of 6-aminocapronitrile. A crude liquid caprolactam comprising ε-caprolactam (CL), 6-aminocapronitrile (ACN) and water obtained from a vapor phase cyclization reaction of ACN is contacted with hydrogen in the presence of a hydrogenation catalyst to convert the ACN in the crude liquid caprolactam to a product comprising hexamethylenediamine (HMD) and hexamethyleneimine (HMI). Tetrahydroazepine (THA) in the crude liquid caprolactam is converted to HMI during this hydrogenation. The HMD and HMI have lower boiling points compared to ACN and thus they are more easily separated from CL in the subsequent distillation operations. Thus a process to make CL from ACN with fewer distillation stages, and with lower pressure drop and lower base temperature, is accomplished.

    摘要翻译: 本发明涉及由氨基腈生产内酰胺的领域,特别涉及通过6-氨基己腈的气相水解环化生产ε-己内酰胺。 包含ε-己内酰胺(CL),6-氨基己腈(ACN)和由ACN的气相环化反应获得的水的粗液体己内酰胺在氢化催化剂存在下与氢气接触,将粗液体己内酰胺中的ACN转化为 包含六亚甲基二胺(HMD)和六亚甲基亚胺(HMI)的产品。 粗制液体己内酰胺中的四氢吖庚因(THA)在该氢化期间转化为HMI。 与ACN相比,HMD和HMI具有较低的沸点,因此在随后的蒸馏操作中它们更容易与CL分离。 因此,实现了具有较少蒸馏阶段以及较低压降和较低基础温度的来自ACN的CL的方法。

    Nickel compositions for preparing nickel metal and nickel complexes
    6.
    发明授权
    Nickel compositions for preparing nickel metal and nickel complexes 有权
    用于制备镍金属和镍络合物的镍组合物

    公开(公告)号:US09024049B2

    公开(公告)日:2015-05-05

    申请号:US13821174

    申请日:2011-06-13

    IPC分类号: C07F15/04

    摘要: Nickel(II) compositions for use in manufacturing nickel metal (Ni(0)) compositions, and specifically to methods of making basic nickel carbonates used to produce nickel metal compositions are disclosed. By varying the molar ratios of carbonates and bicarbonates to nickel salts, the methods provide basic nickel carbonates that produce superior nickel metal-containing solids that are well-suited to forming nickel-ligand complexes with phosphorus-containing ligands. The phosphorus-containing ligands can be monodentate or bidentate phosphorus-containing ligands.

    摘要翻译: 公开了用于制造镍金属(Ni(0))组合物的镍(II)组合物,并且具体涉及制备用于生产镍金属组合物的碱式碳酸镍的方法。 通过改变碳酸盐和碳酸氢盐与镍盐的摩尔比,该方法提供碱性镍碳酸盐,其产生优良的含镍金属的固体,其非常适于与含磷配体形成镍 - 配体络合物。 含磷配体可以是单齿或二齿含磷配体。

    NICKEL COMPOSITIONS FOR PREPARING NICKEL METAL AND NICKEL COMPLEXES
    7.
    发明申请
    NICKEL COMPOSITIONS FOR PREPARING NICKEL METAL AND NICKEL COMPLEXES 有权
    用于制备镍金属和镍复合物的镍组合物

    公开(公告)号:US20130317242A1

    公开(公告)日:2013-11-28

    申请号:US13821174

    申请日:2011-06-13

    IPC分类号: C07F15/04

    摘要: Nickel(II) compositions for use in manufacturing nickel metal (Ni(0)) compositions, and specifically to methods of making basic nickel carbonates used to produce nickel metal compositions are disclosed. By varying the molar ratios of carbonates and bicarbonates to nickel salts, the methods provide basic nickel carbonates that produce superior nickel metal-containing solids that are well-suited to forming nickel-ligand complexes with phosphorus-containing ligands. The phosphorus-containing ligands can be monodentate or bidentate phosphorus-containing ligands.

    摘要翻译: 公开了用于制造镍金属(Ni(0))组合物的镍(II)组合物,并且具体涉及制备用于生产镍金属组合物的碱式碳酸镍的方法。 通过改变碳酸盐和碳酸氢盐与镍盐的摩尔比,该方法提供碱性镍碳酸盐,其产生优良的含镍金属的固体,其非常适于与含磷配体形成镍 - 配体络合物。 含磷配体可以是单齿或二齿含磷配体。

    PROCESS FOR MAKING TRIPHENYLBORON-PYRIDINE COMPOUND
    8.
    发明申请
    PROCESS FOR MAKING TRIPHENYLBORON-PYRIDINE COMPOUND 失效
    制备三苯硼烷 - 吡啶化合物的方法

    公开(公告)号:US20080154039A1

    公开(公告)日:2008-06-26

    申请号:US12027432

    申请日:2008-02-07

    IPC分类号: C07F5/02

    CPC分类号: C07F5/027

    摘要: A process for improving the recovery of solid triphenylboron-pyridine compound (TPBP), while retaining desirable particle characteristics comprises the addition of an acid to neutralize at least a portion of the alkali contained in the aqueous mother liquor. By adjusting the pH of the product slurry to between about 8.5 and about 12, it is possible to increase product recovery by more than 10%, while maintaining desirable particle characteristics.

    摘要翻译: 改善固体三苯基硼 - 吡啶化合物(TPBP)回收率的方法同时保留所需的颗粒特性包括加入酸以中和含水母液中的至少一部分碱。 通过将产品浆料的pH调节至约8.5至约12之间,可以在保持理想的颗粒特性的同时将产品回收率提高10%以上。