公开(公告)号：DE3322153A1

公开(公告)日：1983-12-29

申请号：DE3322153

申请日：1983-06-21

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KUDOH AKIO ,  HONDA TADATOSHI ,  KONTANI MAKOTO ,  TERADA KAZUHIRO ,  TSUDA TAKESHI ,  KIYONO SHINJI

IPC: C07D209/08 ,  C07D209/04

Abstract: Disclosed herein is to react an aniline and an ethylene glycol at a superatmospheric pressure in preparing an indole by subjecting the aniline and ethylene glycol to a gas-phase catalytic reaction in the presence of a catalyst, thereby improving the selectivity of the reaction and the service life of the catalyst.

公开(公告)号：GB2116558A

公开(公告)日：1983-09-28

申请号：GB8310651

申请日：1982-08-25

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HONDA TADATOSHI ,  TERADA KAZUHIRO

IPC: C07B61/00 ,  C07D209/08

Abstract: PCT No. PCT/JP82/00337 Sec. 371 Date Apr. 22, 1983 Sec. 102(e) Date Apr. 22, 1983 PCT Filed Aug. 25, 1982 PCT Pub. No. WO83/00691 PCT Pub. Date Mar. 3, 1983.Preparation process of indole from aniline and ethylene glycol. Upon preparing indole by reacting aniline and ethylene glycol in a gas phase and in the presence of a catalyst, ethylene glycol is charged in portions to a multiplicity of catalyst stages formed by dividing a catalyst bed and connected in series. This divided supply of ethylene glycol permits the suppresing of the decomposition of ethylene glycol, even if the molar ratio of feed aniline to total feed ethylene glycol is small. The above process permits making the yield of indole large and reducing the amount of unreacted aniline to be separated and recovered from the reaction effluent.

公开(公告)号：GB2108496A

公开(公告)日：1983-05-18

申请号：GB8227303

申请日：1982-09-24

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HONDA TADATOSHI

IPC: C07D209/08 ,  C07C209/04 ,  C07D209/04

Abstract: A method for the separation of indole by distilling an indole-containing reaction fluid obtained by the reaction of aniline with ethylene glycol or by the reaction of N-( beta -hydroxyethyl)aniline, which comprises bringing the reaction fluid into contact with a basic substance prior to and/or during the distillation. This method can prevent the deterioration of indole during the distillation procedure.

公开(公告)号：FR2514351A1

公开(公告)日：1983-04-15

申请号：FR8216915

申请日：1982-10-08

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HONDA TADATOSHI

IPC: C07D209/08 ,  C07C209/04 ,  C07D209/04 ,  B01D3/00

Abstract: A method for the separation of indole by distilling an indole-containing reaction fluid obtained by the reaction of aniline with ethylene glycol or by the reaction of N-( beta -hydroxyethyl)aniline, which comprises bringing the reaction fluid into contact with a basic substance prior to and/or during the distillation. This method can prevent the deterioration of indole during the distillation procedure.

公开(公告)号：DE3236765A1

公开(公告)日：1983-04-14

申请号：DE3236765

申请日：1982-10-05

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HONDA TADATOSHI

IPC: C07D209/08 ,  C07C209/04 ,  C07D209/04

Abstract: A method for the separation of indole by distilling an indole-containing reaction fluid obtained by the reaction of aniline with ethylene glycol or by the reaction of N-( beta -hydroxyethyl)aniline, which comprises bringing the reaction fluid into contact with a basic substance prior to and/or during the distillation. This method can prevent the deterioration of indole during the distillation procedure.

公开(公告)号：DE3141173A1

公开(公告)日：1982-05-19

申请号：DE3141173

申请日：1981-10-16

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HASHIMOTO MASAO ,  HONDA TADATOSHI

IPC: B01J27/18 ,  C07C51/06 ,  C07C57/03 ,  C07C57/05 ,  C07C57/065 ,  C07C67/327 ,  C07C69/533 ,  C07C69/54 ,  C07C67/20

Abstract: A process for producing an alpha , beta -unsaturated carboxylic acid or esters thereof which comprises bringing an alpha -hydroxycarboxylic acid amide into contact with a solid acid catalyst independently or along with water, or along with water and an aliphatic alcohol, or along with an aliphatic alcohol.

公开(公告)号：FR2485002A1

公开(公告)日：1981-12-24

申请号：FR8112008

申请日：1981-06-18

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SHIZUKA SHIRO ASANO ET KOHEI ,  KAMBARA YOSHIHIKO ,  MIKAMI JUNJI ,  KATO HIROSHI ,  HONDA TADATOSHI

IPC: B01J23/00 ,  C07C233/09 ,  C07C253/34 ,  C07C231/24 ,  C08F20/52 ,  C08F120/56 ,  C07C103/133 ,  C07C102/08

Abstract: 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.

公开(公告)号：AU4966372A

公开(公告)日：1974-06-06

申请号：AU4966372

申请日：1972-12-05

Applicant: MITSUI TOATSU CHEMICALS

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

IPC: C07C231/00 ,  C07C67/00 ,  C07C231/06 ,  C07C231/24 ,  C07C233/09 ,  C07C103/12

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.

公开(公告)号：DE2259796A1

公开(公告)日：1973-06-14

申请号：DE2259796

申请日：1972-12-06

Applicant: MITSUI TOATSU CHEMICALS

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

IPC: C07C231/00 ,  C07C67/00 ,  C07C231/06 ,  C07C231/24 ,  C07C233/09 ,  C07C103/12

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.

公开(公告)号：DE2259750A1

公开(公告)日：1973-06-07

申请号：DE2259750

申请日：1972-12-06

Applicant: MITSUI TOATSU CHEMICALS

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

IPC: C07C231/22 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C233/09 ,  C07C103/12