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    Process for continuous preparation of diester of oxalic acid
    2.
    发明授权
    Process for continuous preparation of diester of oxalic acid 失效
    连续制备草酸二酯的方法

    公开(公告)号：US4467109A

    公开(公告)日：1984-08-21

    申请号：US495460

    申请日：1983-05-19

    申请人： Susumu Tahara ,  Kozo Fujii ,  Keigo Nishihira ,  Masaoki Matsuda ,  Katsuhiko Mizutare

    发明人： Susumu Tahara ,  Kozo Fujii ,  Keigo Nishihira ,  Masaoki Matsuda ,  Katsuhiko Mizutare

    IPC分类号： C07C69/36 ,  C07C69/34

    CPC分类号： C07C69/36

    摘要： There is provided a process for the continuous preparation of a diester of oxalic acid, which comprises a first step of reacting carbon monoxide with an ester of nitrous acid in the gaseous phase; a second step of condensing the gaseous reaction mixture to separate a non-condensed gas from a condensed liquid containing the diester of oxalic acid; a third step of introducing the non-condensed gas of the second step to a regeneration column, thereby contacting it with a gas containing molecular oxygen and an alcohol, and recycling the resulting gas containing an ester of nitrous acid to the reactor of the first step; a fourth step of distilling out an alcohol containing a diester of carbonic acid formed as a by-product of the first step and obtaining a liquid diester of oxalic acid; and a fifth step of introducing the distillate of the fourth step to a hydrolysis column thereby hydrolyzing the diester of carbonic acid in the gas and recycling the alcohol as an alcohol source for the third step.

    摘要翻译： 提供了一种用于连续制备草酸二酯的方法，其包括使一氧化碳与亚硝酸酯在气相中反应的第一步骤; 冷凝气态反应混合物以从含有草酸二酯的冷凝液分离非冷凝气体的第二步骤; 将第二步骤的非冷凝气体引入再生塔的第三步骤，由此使其与含有分子氧和醇的气体接触，并将产生的含有亚硝酸酯的气体再循环到第一步骤的反应器 ; 第四步骤，蒸馏出含有作为第一步副产物的碳酸二酯的醇，得到草酸的液体二酯; 以及第五步骤，将第四步骤的馏出物引入水解塔，由此使气体中的碳酸二酯水解并再循环醇作为第三步的醇源。

    Process for continuously preparing a diester of oxalic acid
    3.
    发明授权
    Process for continuously preparing a diester of oxalic acid 失效
    连续制备草酸二酯的方法

    公开(公告)号：US4461909A

    公开(公告)日：1984-07-24

    申请号：US495459

    申请日：1983-05-19

    申请人： Susumu Tahara ,  Kozo Fujii ,  Keigo Nishihira ,  Masaoki Matsuda ,  Katsuhiko Mizutare

    发明人： Susumu Tahara ,  Kozo Fujii ,  Keigo Nishihira ,  Masaoki Matsuda ,  Katsuhiko Mizutare

    IPC分类号： B01J23/44 ,  C07C69/36 ,  C07C69/34

    CPC分类号： C07C69/36

    摘要： There is provided a process for the continuous preparation of a diester of oxalic acid which comprises a first step of reacting carbon monoxide with an ester of nitrous acid in the gaseous phase; a second step of condensing the gaseous reaction mixture to separate a non-condensed gas from a condensed liquid containing the diester of oxalic acid; a third step of introducing the non-condensed gas of the second step to a regeneration column and thereby contacting it with a gas containing molecular oxygen and an alcohol to regenerate nitrogen monoxide in the non-condensed gas into an ester of nitrous acid so as to bring the concentration of nitrogen monoxide in the gas at the outlet of the column to a level of from 2 to 7% by volume; and a fourth step of recycling the gas of the third step containing the ester of nitrous acid and from 2 to 7% by volume of nitrogen monoxide to the reactor of the first step.

    摘要翻译： 提供了一种用于连续制备草酸二酯的方法，该方法包括使一氧化碳与亚硝酸酯在气相中反应的第一步骤; 冷凝气态反应混合物以从含有草酸二酯的冷凝液分离非冷凝气体的第二步骤; 将第二步骤的非冷凝气体引入再生塔的第三步骤，由此使其与含有分子氧和醇的气体接触，以将非冷凝气体中的一氧化氮再生成亚硝酸酯，以便 使塔的出口处的气体中的一氧化氮浓度达到2〜7体积％的水平; 以及将含有亚硝酸酯和2〜7体积％一氧化氮的第三步骤的气体再循环到第一步骤的反应器的第四步骤。

    Preparation of 2,3-dihydro-2-methyl-2,3-dialkyl-7-oxybenzofurans
    4.
    发明授权
    Preparation of 2,3-dihydro-2-methyl-2,3-dialkyl-7-oxybenzofurans 失效
    2,3-二氢-2-甲基-2,3-二烷基-7-氧代苯并呋喃的制备

    公开(公告)号：US4540800A

    公开(公告)日：1985-09-10

    申请号：US484237

    申请日：1983-04-12

    申请人： Yukio Inaba ,  Taisei Igarashi ,  Susumu Tahara ,  Takashi Miyatake

    发明人： Yukio Inaba ,  Taisei Igarashi ,  Susumu Tahara ,  Takashi Miyatake

    IPC分类号： C07D307/86

    CPC分类号： C07D307/86

    摘要： A process for the preparation of a 2,3-dihydro-2-methyl-2,3-dialkyl-7-oxybenzofuran having the formula (I): ##STR1## in which R and R' are the same or different and each represents a lower alkyl group or hydrogen atom, which comprises reacting catechol with an aldehyde having the formula (II):(RCH.sub.2)(R')CHCHO (II)or an alcohol having the formula (III):RCH.dbd.C(R')--CH.sub.2 OH (III)in a gaseous phase in the presence of a solid acid catalyst. The products are useful as intermediates in the preparation of insecticides.

    摘要翻译： 制备具有式（I）的2,3-二氢-2-甲基-2,3-二烷基-7-氧代苯并呋喃的方法：其中R和R'相同或不同 并且各自表示低级烷基或氢原子，其包括使儿茶酚与式（II）的醛反应：（RCH 2）（R'）CHCHO（II）或具有式（III）的醇：RCH = C（ R'）-CH 2 OH（III）在气相中在固体酸催化剂存在下反应。 该产品可用作制备杀虫剂的中间体。

    Vertically movable staircase
    5.
    发明授权
    Vertically movable staircase 失效
    垂直移动的楼梯

    公开(公告)号：US5213191A

    公开(公告)日：1993-05-25

    申请号：US887047

    申请日：1992-05-22

    申请人： Susumu Tahara ,  Satoshi Nakagawa ,  Misayo Nakamura

    发明人： Susumu Tahara ,  Satoshi Nakagawa ,  Misayo Nakamura

    IPC分类号： B66B9/08 ,  B66B21/06

    CPC分类号： B66B21/06 ,  B66B9/08

    摘要： A vertically movable staircase carries on a vertical pillar a plurality of steps sequentially secured to the pillar along a spiral line thereon, the pillar being vertically moved while being axially rotated by a driving device. The staircase is space saving and simple in structure.

    摘要翻译： 可垂直移动的楼梯沿着螺旋线顺序地固定在支柱上的多个台阶上承载有垂直支柱，该支柱在被驱动装置轴向旋转的同时垂直移动。 楼梯节省空间，结构简单。

    Process for continuously preparing ethylene glycol
    7.
    发明授权
    Process for continuously preparing ethylene glycol 失效
    连续制备乙二醇的方法

    公开(公告)号：US4453026A

    公开(公告)日：1984-06-05

    申请号：US459424

    申请日：1983-01-19

    申请人： Susumu Tahara ,  Kozo Fujii ,  Keig Nishihira ,  Masaoki Matsuda ,  Katsuhiko Mizutare

    发明人： Susumu Tahara ,  Kozo Fujii ,  Keig Nishihira ,  Masaoki Matsuda ,  Katsuhiko Mizutare

    IPC分类号： C07C31/20 ,  C07C29/149 ,  C07C29/80 ,  C07C203/00 ,  C07C29/136

    CPC分类号： C07C29/149 ,  C07C201/04 ,  C07C29/80

    摘要： There is disclosed a process for continuously preparing ethylene glycol, which comprises (1) a first step of contacting a gas containing carbon monoxide and an ester of nitrous acid with a solid catalyst of platinum group metal series in the gaseous phase thereby to obtain a product containing a diester of oxalic acid, (2) a second step of condensing the product of the first step thereby to separate a non-condensed gas containing nitrogen monoxide formed by the catalytic reaction of the first step from a condensed liquid containing the diester of oxalic acid, (3) a third step of contacting the non-condensed gas of the second step with a gas containing molecular oxygen and an alcohol, and recycling the resulting gas containing an ester of nitrous acid to the first step, (4) a fourth step of contacting the condensed liquid of the second step containing the diester of oxalic acid and hydrogen with a catalyst for hydrogenation in the gaseous phase thereby to obtain a product containing ethylene glycol, (5) a fifth step of distilling the product of the fourth step thereby to distill out the alcohol and to obtain ethylene glycol, and (6) a sixth step of recycling the alcohol of the fifth step as an alcohol source for the third step.

    摘要翻译： 公开了连续制备乙二醇的方法，其包括（1）在气相中使含有一氧化碳和亚硝酸酯的气体与铂族金属系固体催化剂接触的第一步骤，从而获得产物 含有草酸二酯的方法，（2）将第一步骤的产物冷凝的第二步骤，由第一步骤的催化反应形成的含有一氧化氮的非冷凝气体与含有草酸二酯的冷凝液分离 酸，（3）使第二步骤的非冷凝气体与含有分子氧和醇的气体接触的第三步骤，并将产生的含有亚硝酸酯的气体再循环至第一步骤，（4）第四步骤 将含有草酸和氢的二酯的第二步骤的冷凝液与气相中的氢化催化剂接触的步骤，从而获得含有eth的产物 （5）第五步骤，蒸馏第四步骤的产物，从而蒸馏出醇并获得乙二醇;和（6）将第五步骤的醇再循环作为醇源的第六步骤， 第三步。