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：CA1022944A

公开(公告)日：1977-12-20

申请号：CA201343

申请日：1974-05-31

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANO SHIRO ,  YOSHIMURA KIYOTAKA ,  HASHIMOTO MASAO

IPC: C07D213/82 ,  B01J23/00 ,  B01J23/72 ,  B01J25/00 ,  B01J27/00 ,  B01J27/24 ,  C07B61/00 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C233/09 ,  C07D213/81 ,  C07C102/08

Abstract: An improved process for converting acrylonitrile to the corresponding amide by hydrating said nitrile in the presence of a metallic copper catalyst and aluminum nitrate as promoter for said catalyst.

公开(公告)号：CA2004004A1

公开(公告)日：1990-05-29

申请号：CA2004004

申请日：1989-11-28

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAKANISHI TAKEHISA ,  MIURA TOSHIZUMI ,  HASHIMOTO MASAO

IPC: C07C51/15 ,  C07C65/03

Abstract: of the Invention A process for the preparation of aromatic hydroxycarboxylic acids by reacting alkali metal salts of phenol with carbon dioxide in organic phosphine oxides containing straight or branched alkyl groups having from 1 to B carbon atoms or phenyl groups. By this process, p-hydroxybenzoic can be obtained in a high yield. The product is useful as an antiseptic and also as an intermediate of a variety of agricultural, pharmaceutical or polymer chemicals.

公开(公告)号：AU6976774A

公开(公告)日：1975-12-04

申请号：AU6976774

申请日：1974-06-04

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YOSHIMURA KIYOTAKA ,  HASHIMOTO MASAO ,  ASANO SHIRO

IPC: C07D213/82 ,  B01J23/00 ,  B01J23/72 ,  B01J25/00 ,  B01J27/00 ,  B01J27/24 ,  C07B61/00 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C233/09 ,  C07D213/81 ,  C07C103/08 ,  C07C103/10 ,  C07D31/44 ,  B01J11/28 ,  C07C103/19 ,  C07C103/22

Abstract: An improved process for converting acrylonitrile to the corresponding amide by hydrating said nitrile in the presence of a metallic copper catalyst and aluminum nitrate as promoter for said catalyst.

公开(公告)号：DE68917097D1

公开(公告)日：1994-09-01

申请号：DE68917097

申请日：1989-11-27

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAKANISHI TAKEHISA ,  HASHIMOTO MASAO ,  MIURA TOSHIZUMI

IPC: C07C51/15 ,  C07C65/03 ,  C07C65/10

Abstract: A process for the preparation of aromatic hydroxycarboxylic acids by reacting alkali metal salts of phenol with carbon dioxide in organic phosphine oxides containing straight or branched alkyl groups having from 1 to 8 carbon atoms and phenyl groups.

公开(公告)号：DE2426805A1

公开(公告)日：1975-01-09

申请号：DE2426805

申请日：1974-06-04

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANO SHIRO ,  YOSHIMURA KIYOTAKA ,  HASHIMOTO MASAO

IPC: C07C231/06 ,  C07C20060101 ,  C07C67/00 ,  C07C231/00 ,  C07C231/22 ,  C07C231/24 ,  C07C233/09 ,  C07C103/12

Abstract: A method of purifying an aqueous solution of acrylamide, which has been formed by reacting acrylonitrile with water in the presences of the metallic copper catalyst, and which contains cuprous ions, comprising treating said aqueous solution in a reaction zone which is substantially free of an oxygen containing gas or liquid.

公开(公告)号：DE2427204A1

公开(公告)日：1974-12-19

申请号：DE2427204

申请日：1974-06-05

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANO SHIRO ,  YOSHIMURA KIYOTAKA ,  HASHIMOTO MASAO

IPC: C07D213/82 ,  B01J23/00 ,  B01J23/72 ,  B01J25/00 ,  B01J27/00 ,  B01J27/24 ,  C07B61/00 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C233/09 ,  C07D213/81 ,  C07C103/08 ,  C07C103/12 ,  C07D31/44

Abstract: An improved process for converting acrylonitrile to the corresponding amide by hydrating said nitrile in the presence of a metallic copper catalyst and aluminum nitrate as promoter for said catalyst.

公开(公告)号：DE68917097T2

公开(公告)日：1994-11-10

申请号：DE68917097

申请日：1989-11-27

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAKANISHI TAKEHISA ,  HASHIMOTO MASAO ,  MIURA TOSHIZUMI

IPC: C07C51/15 ,  C07C65/03 ,  C07C65/10

Abstract: A process for the preparation of aromatic hydroxycarboxylic acids by reacting alkali metal salts of phenol with carbon dioxide in organic phosphine oxides containing straight or branched alkyl groups having from 1 to 8 carbon atoms and phenyl groups.

公开(公告)号：AU6970574A

公开(公告)日：1975-12-04

申请号：AU6970574

申请日：1974-06-03

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HASHIMOTO MASAO ,  ASANO SHIRO ,  YOSHIMURA KIYOTAKA

IPC: C07C231/06 ,  C07C20060101 ,  C07C67/00 ,  C07C231/00 ,  C07C231/22 ,  C07C231/24 ,  C07C233/09 ,  C07C103/08 ,  C07C103/12

Abstract: A method of purifying an aqueous solution of acrylamide, which has been formed by reacting acrylonitrile with water in the presences of the metallic copper catalyst, and which contains cuprous ions, comprising treating said aqueous solution in a reaction zone which is substantially free of an oxygen containing gas or liquid.

公开(公告)号：JPH02223540A

公开(公告)日：1990-09-05

申请号：JP28759489

申请日：1989-11-06

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAKANISHI TAKEHISA ,  MIURA TOSHISUMI ,  HASHIMOTO MASAO

IPC: C07C51/15 ,  C07C65/03

Abstract: PURPOSE:To obtain an aromatic hydroxycarboxylic acid rich in p- hydroxybenzoic acid by subjecting an alkali metal salt of phenol and carbon dioxide to carboxylation reaction by using an organic phosphine oxide as a solvent. CONSTITUTION:One of a mixture of an organic phosphine oxide shown by the formula (R1-R3 are 1-8C straight-chain or branched alkyl or phenyl) is used as a solvent, an alkali metal salt of phenol is reacted with carbon dioxide to give an aromatic hydroxycarboxylic acid rich in p-hydroxybenzoic acid. For example, trimethylphosphine oxide or triethylphosphine oxide may be cited as the organic phosphine oxide. By using the solvent, the reaction can be carried out in the same selectivity even in the case of sodium salt of the alkali metal salt of phenol as in the calcium salt and is economically advantageous. The aromatic hydroxycarboxylic acid is useful as an antiseptic, intermediate for agricultural chemical and drugs and a raw material for polyester.