公开(公告)号：ES2058633T3

公开(公告)日：1994-11-01

申请号：ES90103454

申请日：1990-02-22

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  WADA MASARU ,  MIZUTA HIDEKI

IPC: C07C263/10 ,  C07C265/14

公开(公告)号：CA2010224A1

公开(公告)日：1990-08-23

申请号：CA2010224

申请日：1990-02-16

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  WADA MASARU ,  MIZUTA HIDEKI

IPC: C07C263/10 ,  C07C265/14

Abstract: This invention is an industrially efficient and improved process for the preparation of xylylene diisocyanate by using esters as the solvent for converting xylylene diamine or its hydrochloride to isocyanate.

公开(公告)号：DE3760506D1

公开(公告)日：1989-10-05

申请号：DE3760506

申请日：1987-03-27

Applicant: MITSUI TOATSU CHEMICALS

Inventor： MIURA TOHRU ,  NAGATA TERUYUKI ,  MIZUTA HIDEKI

IPC: C07C69/75 ,  B01J23/44 ,  C07B61/00 ,  C07C51/373 ,  C07C62/24 ,  C07C67/303 ,  C07C67/39 ,  C07C67/42 ,  C07C69/95 ,  C07C69/757 ,  C07C67/313

Abstract: A process for preparing cyclohexanonecarboxylic acid compounds by catalytically hydrogenating the corresponding hydroxybenzoic acid compounds in a secondary alcohol or tertiary alcohol solvent.

公开(公告)号：AU569344B2

公开(公告)日：1988-01-28

申请号：AU3577284

申请日：1984-11-22

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  TAMAKI AKIHIRO ,  OHNISHI HIROKI ,  MIZUTA HIDEKI

IPC: C07C85/11 ,  C07C93/14

公开(公告)号：FR2555575A1

公开(公告)日：1985-05-31

申请号：FR8418062

申请日：1984-11-27

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  TAMAKI AKIHIRO ,  OHNISHI HIROKI ,  MIZUTA HIDEKI

IPC: B01J23/00 ,  B01J23/38 ,  C07B61/00 ,  C07C20060101 ,  C07C67/00 ,  C07C209/36 ,  C07C211/46 ,  C07C213/00 ,  C07C217/84 ,  C07C93/14

Abstract: 4-Alkoxyanilines are obtained industrially advantageously by catalytically hydrogenating a nitrobenzene in the presence of a noble metal catalyst in a mixed solvent containing a lower aliphatic alcohol, sulfuric acid, and water or a lower aliphatic carboxylic acid or both to induce hydrogenation and a Bamberger-type rearrangement reaction. The mixed solvent contains at least 10 moles, preferably 30 to 60 moles, of the lower aliphatic alcohol per mole of the nitrobenzene, 1 to 10 moles, preferably 2 to 7 moles, of sulfuric acid per mole of the nitrobenzene, and 2 to 30% by weight, preferably 3 to 10% by weight, of water, the lower aliphatic carboxylic acid or both.

公开(公告)号：IT8423765D0

公开(公告)日：1984-11-28

申请号：IT2376584

申请日：1984-11-28

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  TAMAKI AKIHIRO ,  OHNISHI HIROKI ,  MIZUTA HIDEKI

IPC: B01J23/00 ,  C07B61/00 ,  B01J23/38 ,  C07C20060101 ,  C07C67/00 ,  C07C209/36 ,  C07C211/46 ,  C07C213/00 ,  C07C217/84 ,  C07C

Abstract: 4-Alkoxyanilines are obtained industrially advantageously by catalytically hydrogenating a nitrobenzene in the presence of a noble metal catalyst in a mixed solvent containing a lower aliphatic alcohol, sulfuric acid, and water or a lower aliphatic carboxylic acid or both to induce hydrogenation and a Bamberger-type rearrangement reaction. The mixed solvent contains at least 10 moles, preferably 30 to 60 moles, of the lower aliphatic alcohol per mole of the nitrobenzene, 1 to 10 moles, preferably 2 to 7 moles, of sulfuric acid per mole of the nitrobenzene, and 2 to 30% by weight, preferably 3 to 10% by weight, of water, the lower aliphatic carboxylic acid or both.

公开(公告)号：DE69500628T2

公开(公告)日：1998-04-02

申请号：DE69500628

申请日：1995-02-27

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NARUSE HIROSHI ,  MIZUTA HIDEKI ,  UMEDA SHINICHI ,  NAGATA TERUYUKI

IPC: C07D255/02

Abstract: The present invention relates to 1,3,6-Trialkylhexahydro-1,3,6-triazocine-2-on represented by the formula (1): (1) wherein R is a C1 DIFFERENCE C8 alkyl group and a preparation process of the compound comprising reacting N,N',N''-trialkyldiethylenetriamine represented by the formula (2): (2) wherein R is a C1 DIFFERENCE C8 alkyl group, with urea, phosgene or carbon dioxide.

公开(公告)号：CA1287642C

公开(公告)日：1991-08-13

申请号：CA533609

申请日：1987-04-01

Applicant: MITSUI TOATSU CHEMICALS

Inventor： MIURA TOHRU ,  NAGATA TERUYUKI ,  MIZUTA HIDEKI

IPC: C07C69/75 ,  B01J23/44 ,  C07B61/00 ,  C07C51/373 ,  C07C62/24 ,  C07C67/303 ,  C07C67/39 ,  C07C67/42 ,  C07C69/95 ,  C07C69/757

Abstract: A process for preparing cyclohexanonecarboxylic acid compounds by catalytically hydrogenating the corresponding hydroxybenzoic acid compounds in a secondary alcohol or tertiary alcohol solvent.

公开(公告)号：CH662112A5

公开(公告)日：1987-09-15

申请号：CH564084

申请日：1984-11-26

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  TAMAKI AKIHIRO ,  OHNISHI HIROKI ,  MIZUTA HIDEKI

IPC: C07B61/00 ,  B01J23/00 ,  B01J23/38 ,  C07C20060101 ,  C07C67/00 ,  C07C209/36 ,  C07C211/46 ,  C07C213/00 ,  C07C217/84 ,  C07C93/14

公开(公告)号：FR2555575B1

公开(公告)日：1987-08-21

申请号：FR8418062

申请日：1984-11-27

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  TAMAKI AKIHIRO ,  OHNISHI HIROKI ,  MIZUTA HIDEKI

IPC: B01J23/00 ,  C07B61/00 ,  B01J23/38 ,  C07C20060101 ,  C07C67/00 ,  C07C209/36 ,  C07C211/46 ,  C07C213/00 ,  C07C217/84 ,  C07C93/14

Abstract: 4-Alkoxyanilines are obtained industrially advantageously by catalytically hydrogenating a nitrobenzene in the presence of a noble metal catalyst in a mixed solvent containing a lower aliphatic alcohol, sulfuric acid, and water or a lower aliphatic carboxylic acid or both to induce hydrogenation and a Bamberger-type rearrangement reaction. The mixed solvent contains at least 10 moles, preferably 30 to 60 moles, of the lower aliphatic alcohol per mole of the nitrobenzene, 1 to 10 moles, preferably 2 to 7 moles, of sulfuric acid per mole of the nitrobenzene, and 2 to 30% by weight, preferably 3 to 10% by weight, of water, the lower aliphatic carboxylic acid or both.