公开(公告)号：DE2259096A1

公开(公告)日：1973-06-14

申请号：DE2259096

申请日：1972-12-02

Applicant: MITSUI TOATSU CHEMICALS

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

IPC: C07C233/09 ,  C07C103/12

公开(公告)号：CA2029361C

公开(公告)日：1997-01-21

申请号：CA2029361

申请日：1990-11-06

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HONDA TADATOSHI ,  KOTANI MAKOTO

IPC: C07D209/68 ,  B01J23/50 ,  B01J23/89 ,  C07B61/00 ,  C07D209/04 ,  C07D209/08

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 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.

公开(公告)号：DE69119035D1

公开(公告)日：1996-05-30

申请号：DE69119035

申请日：1991-11-14

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HONDA TADATOSHI ,  HORIUCHI NOBUNHIKO ,  KITAGAWA JUN ,  MURAKAMI MASAMI ,  KAWAHARA KAZUNORI ,  IO HIROFUMI

IPC: B01J27/199 ,  B01J27/24 ,  C07C51/25 ,  F16G5/16

Abstract: A composite oxide catalyst represented by the general formula: Mo-V-P-X-Y (wherein X represents at least one element selected from the group consisting of Sb, Cu, Co, Bi and As; Y represents at least one element selected from the group consisting of K, Rb, Cs and Tl) and a method for preparing methacrylic acid through gas phase catalytic oxidation of methacrolein with molecular oxygen in the presence of the foregoing catalyst are herein disclosed. The catalyst exhibits excellent catalytic activity, selectivity to methacrylic acid, catalytic stability and lifetime.

公开(公告)号：DE69019301T2

公开(公告)日：1996-01-25

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.

公开(公告)号：CA1223700A

公开(公告)日：1987-06-30

申请号：CA384593

申请日：1981-08-25

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HONDA TADATOSHI ,  ITOH HIROSHI ,  SAITO JUN ,  MITSUISHI TAKATOSHI

IPC: B01D21/01 ,  C07C233/09 ,  C08F2/00 ,  C08F2/10 ,  C08F2/16 ,  C08F20/52 ,  C08F20/56 ,  C08F220/56

Abstract: TITLE OF THE INVENTION PROCESS FOR PRODUCING ACRYLAMIDE-TYPE CATIONIC POLYMERIC FLOCCULANT Polyacrylamide useful as a high-molecular-weight, well water-soluble flocculant, especially cationic polymeric flocculant, is produced by rendering crude acrylamide substantially free from N-acryloyl acrylamide, said crude acrylamide being obtained by catalytic hydration of acrylonitrile with water in the presence of a metallic copper catalyst at a pH in the range of from 4 to 10, and then polymerizing the acrylamide.

公开(公告)号：GB2123822B

公开(公告)日：1986-02-12

申请号：GB8317676

申请日：1983-06-29

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KUDOH AKIHIDE ,  HONDA TADATOSHI ,  KOTANI MAKOTO ,  TERADA KAZUHIRO ,  TSUDA TAKESHI ,  KIYONO SHINJI

IPC: C07D209/04 ,  B01J21/00 ,  B01J23/00 ,  B01J27/00 ,  C07B61/00 ,  C07D209/08

Abstract: Disclosed herein is a preparation process for an indole, which process comprises subjecting an N-( beta -hydroxy)-alkylaniline, in the presence of a catalyst and at a super-atmospheric pressure, to a gas-phase catalytic reaction. The present process improves the selectivity of the reaction and the service life of the catalyst.

公开(公告)号：GB2123820B

公开(公告)日：1985-11-27

申请号：GB8316911

申请日：1983-06-22

Applicant: MITSUI TOATSU CHEMICALS

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

IPC: C07D209/08 ,  C07D209/12

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：CA1182424A

公开(公告)日：1985-02-12

申请号：CA413119

申请日：1982-10-08

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HONDA TADATOSHI

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

Abstract: SPECIFICATION Title of the Invention METHOD FOR THE SEPARATION OF INDOLE 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：DE3123936A1

公开(公告)日：1982-04-29

申请号：DE3123936

申请日：1981-06-16

Applicant: MITSUI TOATSU CHEMICALS

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

IPC: C07C231/24 ,  B01J23/00 ,  C07C233/09 ,  C07C253/34 ,  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：DE3135149A1

公开(公告)日：1982-04-08

申请号：DE3135149

申请日：1981-09-04

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HONDA TADATOSHI ,  ITOH HIROSHI ,  SAITO JUN ,  MITSUISHI TAKATOSHI

IPC: B01D21/01 ,  C07C233/09 ,  C08F2/00 ,  C08F2/10 ,  C08F2/16 ,  C08F20/52 ,  C08F20/56 ,  C08F220/56 ,  C08F120/56

Abstract: Polyacrylamide useful as a high- molecular-weight, water-soluble cationic flocculant, is produced by polymerizing acrylamide which is substantially free from N-acryloyl acrylamide with a minor amount of cationic monomer. Crude acrylamide is preferably obtained by catalytic hydration of acrylonitrile with water in the presence of a metallic copper catalyst at a pH in the range of from 4 to 10, and then rendered substantially free from N-acryloyl acrylamide by physical adsorption, reactive adsorption, decomposition by a chemical reaction or a solvent extraction.