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    Acrylamid aqueous solution refining process
    1.
    发明授权
    Acrylamid aqueous solution refining process 失效
    丙烯酰胺水溶液精制工艺

    公开(公告)号：US3923741A

    公开(公告)日：1975-12-02

    申请号：US31233772

    申请日：1972-12-05

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： ASANO SHIRO ,  YOSHIMURA KIYOTAKA ,  TSUCHIYA RYOJI ,  HONDA TADATOSHI

    IPC: C07C233/09 ,  C07C103/08

    CPC classification number: C07C233/09

    Abstract: There is disclosed an acrylamide aqueous solution refining process wherein an acrylamide aqueous solution obtained through a catalytic hydration process etc. is distilled to remove acrylonitrile when necessary; then is treated with active carbon, which has been arranged to adsorb cupric ion before use so that the polymerization of acrylamide that tends to take place around active carbon can be prevented thereby; and, if necessary, deionization is carried out by means of ion-exchange resin.

    Abstract translation: 公开了丙烯酰胺水溶液精制方法，其中通过催化水合方法等获得的丙烯酰胺水溶液在需要时蒸馏除去丙烯腈; 然后用活性炭处理，其被布置成在使用前吸附铜离子，从而可以防止倾向于在活性炭周围发生的丙烯酰胺的聚合; 并且如果需要，通过离子交换树脂进行去离子。

    Method for concentrating an acrylamide aqueous solution
    2.
    发明授权
    Method for concentrating an acrylamide aqueous solution 失效
    浓缩丙烯酰胺水溶液的方法

    公开(公告)号：US3917693A

    公开(公告)日：1975-11-04

    申请号：US31183072

    申请日：1972-12-04

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： ASANO SHIRO ,  YOSHIMURA KIYOTAKA ,  TSUCHIYA RYOJI ,  HONDA TADATOSHI

    IPC: C07C231/00 ,  C07C67/00 ,  C07C231/06 ,  C07C231/24 ,  C07C233/09 ,  C07C103/08

    CPC classification number: C07C233/09

    Abstract: A method for economically concentrating an acrylamide aqueous solution by catalytic hydration without substantial deterioration in the product. According to the method, an acrylamide aqueous solution obtained from catalytic hydration, is concentrated by distillation while maintaining the solution in good contact with at least 0.1 mole. or more of air per mole. of water distilled from the acrylamide aqueous solution.

    Abstract translation: 通过催化水合而经济地浓缩丙烯酰胺水溶液的方法，而不会使产物显着劣化。 根据该方法，通过蒸馏浓缩由催化水合获得的丙烯酰胺水溶液，同时保持溶液与至少0.1摩尔良好的接触。 或更多的空气。 从丙烯酰胺水溶液中蒸馏出的水。

    PROCESS FOR THE PREPARATION OF INDOLES
    4.
    发明授权
    PROCESS FOR THE PREPARATION OF INDOLES 失效

    公开(公告)号：KR860001601B1

    公开(公告)日：1986-10-13

    申请号：KR820002627

    申请日：1982-06-12

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： HONDA TADATOSHI ,  MATSUDA FUJIO ,  TERADA KAZUHIRO ,  KIYOURA TADAMITSU

    IPC: B01J23/00 ,  B01J23/66 ,  C07B61/00 ,  C07D209/08

    Abstract: Indoles were prepd. by reacting aniline or its derivs. with 1,2- glycol under catalysts. Thus, a soln. contg. 30 g cadmium nitrate and 19 g 60%-HNO3 in 300 ml H2O was mixed with 130 g glass fiber contg. 29% SiO2 and 9% Na2O in 2 liters H2O to give a matrix (10-28 mesh; specific surface area=240 m2/g). This material was soaked in 25 wt.% AgNO3, dried at 80≦̸C, and reduced by boiling at 150≦̸C for 2 hrs. to give a catalyst. A mixt. contg. 7 M aniline and 1 M ethylene glycol was introduced into the reactor contg. a catalyst at the rate of 0.3 liter-mixt./1 liter-catalyst. At the same time, a mixt. contg. aniline and N2-gas (aniline; N2=1M:10M) was passed through the reactor. After reaction, the yield of ethylene glycol produced was 63% between 1 and 3 hrs. and 28% between 25 and 27 hrs.

    PROCESS FOR PREPARATION OF INDOLE
    7.
    发明授权
    PROCESS FOR PREPARATION OF INDOLE 失效

    公开(公告)号：KR860001577B1

    公开(公告)日：1986-10-10

    申请号：KR820003832

    申请日：1982-08-25

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： HONDA TADATOSHI ,  TERADA KAZUHIRO

    IPC: C07B61/00 ,  C07D209/08

    Abstract: An improved prepn. of indole comprises reacting aniline with ethylene glycol in the gas phase in the presence of a catalyst. Ethylene glycol is fed to satisfy a condition that n is (M-1)/(A-1) or more. In the formula, n is the number of divided supply ports; M is the min. number of aniline per mol. of ethylene glycol in the catalytic bed; and A is the mol. number of aniline per mol. of total ethylene glycol fed into the reactor. The process gives a large yield of indole, while reducing the amt. of unreacted aniline.

    10.
    发明专利
    未知

    公开(公告)号：DE69019301D1

    公开(公告)日：1995-06-14

    申请号：DE69019301

    申请日：1990-11-09

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： HONDA TADATOSHI ,  KOTANI MAKOTO

    IPC: C07D209/68 ,  B01J23/50 ,  B01J23/89 ,  C07B61/00 ,  C07D209/04

    Abstract: A process is provided for the preparation of an indole from aniline or a derivative thereof and a polyhydric alcohol. The reaction is carried out in the presence of a catalyst composed of a carrier having a specific surface area of at least 10 m /g and silver supported on the carrier. The catalyst also contains as an additional component a specific amount of at least one element selected from Co, Fe and Ni. Deterioration in catalytic performance of the catalyst during the reaction and its regeneration are therefore minimized.

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