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12 条记录 (耗时 0.012 秒)

    Preparation process of (meth)acrylamide
    3.
    发明授权
    Preparation process of (meth)acrylamide 失效
    （甲基）丙烯酰胺的制备方法

    公开(公告)号：US5041656A

    公开(公告)日：1991-08-20

    申请号：US565900

    申请日：1990-08-10

    申请人： Shiro Asano ,  Mareo Tokunaga ,  Yoshihiko Kambara

    发明人： Shiro Asano ,  Mareo Tokunaga ,  Yoshihiko Kambara

    IPC分类号： C07B61/00 ,  B01J25/00 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C233/09

    CPC分类号： C07C233/09 ,  Y02P20/584

    摘要： A catalyst useful in the practice of a process, in which (meth)acrylamide is prepared through the hydration reaction between (meth)acrylonitrile and water in a suspended liquid-phase bed of a Raney copper catalyst, has been obtained by leaching a Raney copper alloy in the presence of the Raney copper catalyst which has been deteriorated. The above useful catalyst has higher performances, compared with a catalyst obtained by conventionally leaching the Raney copper alloy alone, has satisfactory handling properties in settling and filtering, and can significantly reduced the amount of catalyst to be discarded.

    摘要翻译： 通过在阮内铜催化剂的悬浮液相床中通过（甲基）丙烯腈和水之间的水合反应制备（甲基）丙烯酰胺的方法的实践中有用的催化剂是通过浸出阮内铜 在已经劣化的阮内铜催化剂存在下合金。 与通过常规浸提阮内铜合金而获得的催化剂相比，上述有用的催化剂具有更高的性能，在沉降和过滤中具有令人满意的处理性能，并且可以显着降低待抛弃的催化剂的量。

    Process for purifying an aqueous solution of acrylamide
    4.
    发明授权
    Process for purifying an aqueous solution of acrylamide 失效
    纯化丙烯酰胺水溶液的方法

    公开(公告)号：US4345101A

    公开(公告)日：1982-08-17

    申请号：US269602

    申请日：1981-06-02

    申请人： Shiro Asano ,  Kohei Shizuka ,  Yoshihiko Kambara ,  Junji Mikami ,  Hiroshi Kato ,  Tadatoshi Honda

    发明人： Shiro Asano ,  Kohei Shizuka ,  Yoshihiko Kambara ,  Junji Mikami ,  Hiroshi Kato ,  Tadatoshi Honda

    IPC分类号： C07C231/24 ,  B01J23/00 ,  C07C233/09 ,  C07C253/34 ,  C08F20/52 ,  C08F120/56 ,  C07C103/133

    CPC分类号： C07C253/34 ,  C07C231/24

    摘要： An aqueous solution of acrylamide obtained by catalytic hydration of acrylonitrile in the presence of a copper-based catalyst is purified by the steps, in sequence, of (a) removal of the unreacted acrylonitrile, (b) removal of copper, (c) treatment under basic conditions, (d) cation exchanging treatment and (e) weakly basic anion exchanging treatment. The acrylamide obtained by this process has good storage stability. An acrylamide polymer produced from this monomer is useful as a flocculant having a reduced content of the unreacted monomer, a high molecular weight and excellent solubility in water.

    摘要翻译： 通过在（a）去除未反应的丙烯腈，（b）去除铜，（c）处理（c）处理的步骤中，按照以下步骤来纯化在铜基催化剂存在下通过丙烯腈的催化水合获得的丙烯酰胺水溶液 在碱性条件下，（d）阳离子交换处理和（e）弱碱性阴离子交换处理。 通过该方法获得的丙烯酰胺具有良好的储存稳定性。 由该单体制备的丙烯酰胺聚合物可用作具有降低的未反应单体含量，高分子量和优异的在水中的溶解度的絮凝剂。

    Process for production of acrylamide
    5.
    发明授权
    Process for production of acrylamide 失效
    丙烯酰胺生产工艺

    公开(公告)号：US4365090A

    公开(公告)日：1982-12-21

    申请号：US264949

    申请日：1981-05-18

    申请人： Shiro Asano

    发明人： Shiro Asano

    IPC分类号： C07C231/06 ,  B01J23/00 ,  B01J23/72 ,  C07C67/00 ,  C07C231/00 ,  C07C233/09 ,  C07C102/08

    CPC分类号： C07C231/065

    摘要： In a process for producing acrylamide by hydrating acrylonitrile in the presence of a copper-based catalyst, the reaction is carried out in the presence of 30 to 10,000 ppm of acetone in the reaction solution. According to this process, the activity of the copper-based catalyst is maintained and the economic advantage of acrylamide production is enhanced.

    摘要翻译： 在铜基催化剂存在下使丙烯腈水合制备丙烯酰胺的方法中，反应在反应溶液中的丙酮30〜10000ppm的存在下进行。 根据该方法，维持铜基催化剂的活性，提高丙烯酰胺生产的经济效益。

    Transplanting equipment
    7.
    发明授权
    Transplanting equipment 失效
    移植设备

    公开(公告)号：US5215019A

    公开(公告)日：1993-06-01

    申请号：US892645

    申请日：1992-06-02

    申请人： Eiichiro Kinoshita ,  Shiro Asano ,  Tamaki Kubo

    发明人： Eiichiro Kinoshita ,  Shiro Asano ,  Tamaki Kubo

    IPC分类号： A01C11/02

    CPC分类号： A01C11/025

    摘要： A transplanting machine or equipment for taking seedlings of vegetables or the like from a seedling table 13 and planting them in a field. The machine has a transmission mechanism including a transmission case, a first rotary case (32) driven by a driving device and a second rotary case (33) which rotates reversely to the first rotary case. The rotary cases are linearly extended in a vertical direction while they overlap in contracted form in a longitudinal or horizontal direction. A seedling transplanting tool is carried by the second rotary case. The seedlings are easily removed from a seedling table located at a high position on the machine and transplanted without extending the length of the transplanting equipment in the longitudinal or horizontal direction.

    摘要翻译： 一种用于从幼苗台13取蔬菜等的幼苗的移栽机器或设备，并将其种植在野外。 机器具有变速机构，该变速机构包括变速箱，由驱动装置驱动的第一旋转壳体（32）和与第一旋转壳体相反地旋转的第二旋转壳体（33）。 旋转壳​​体在垂直方向上线性地延伸，同时它们在纵向或水平方向上以收缩的形式重叠。 第二旋转壳体承载幼苗移栽工具。 幼苗容易从位于机器上高位置的幼苗台移除，并且移植而不延长移植设备的纵向或水平方向的长度。