公开(公告)号：DE69405698D1

公开(公告)日：1997-10-23

申请号：DE69405698

申请日：1994-12-23

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KUSUDA CHIYUKI ,  FURUYA MASAYUKI ,  WADA MASARU ,  IRIZATO YOSHIHIRO ,  NARUSE HIROSHI ,  NAGATA TERUYUKI

IPC: C07C213/00 ,  C07C217/92 ,  C07C209/28

Abstract: Described is a process for the preparation of 4-methoxy-2,2',6-trimethyldiphenylamine, which comprises heating and reacting 2,6-dimethylcyclohexanone and 2-methyl-4-methoxyaniline in the presence of a dehydrogenation catalyst while removing the resultant hydrogen and water from the reaction system.

公开(公告)号：DE69017170T2

公开(公告)日：1995-07-27

申请号：DE69017170

申请日：1990-12-24

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KASE MOTOHIRO ,  NAKAYAMA HITOSHI ,  WADA MASARU ,  NAGATA TERUYUKI ,  YAMAGUCHI AKIHIRO

IPC: C07C201/12 ,  C07C205/38 ,  C07C315/04 ,  C07C317/22 ,  C07C319/20 ,  C07C323/20

Abstract: A preparation process of a bis(3-nitrophenoxy) compound represented by the formula: wherein X is a direct bond, divalent hydrocarbon having from 1 to 10 carbon atoms or a divalent group selected from -C(CF3 )2-, -CO-, -S-, -SO-, SO2- or -O-, which comprises reacting 4,4'-bisphenol with m-dinitrobenzene in the presence of an alkali metal carbonate or alkali metal hydrogen carbonate having a particle size of 250 mu m or less while removing generated water from the reaction system during the reaction. In one embodiment of the process, the reaction is carried out while simultaneously adding 4,4'-bisphenol and m-dinitrobenzene to a reaction vessel which was previously charged with the base and an aprotic polar solvent.

公开(公告)号：DE68918351D1

公开(公告)日：1994-10-27

申请号：DE68918351

申请日：1989-06-27

Applicant: MITSUI TOATSU CHEMICALS

Inventor： MATSUKAWA MIHAYA ,  WADA MASARU ,  SUIZU HIROSHI ,  FURUYA MASAYUKI ,  NAGATA TERUYUKI

IPC: C07D207/10 ,  C07D207/40 ,  C07D207/416

Abstract: N-substituted monochlorosuccinimides e.g., N-phenylmonochlorosuccinimide, can be prepared in a high yield by reacting a maleamic acid, e.g., N-phenylmaleamic acid, with phosgene in the presence of a catalyst,e.g., dimethylformamide .

公开(公告)号：DE69011358D1

公开(公告)日：1994-09-15

申请号：DE69011358

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：CA1283101C

公开(公告)日：1991-04-16

申请号：CA536415

申请日：1987-05-05

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KAJIMOTO NOBUYUKI ,  NAGATA TERUYUKI ,  WADA MASARU

IPC: C07D233/22 ,  C07D233/32 ,  C07D239/10 ,  C07D243/04 ,  C07D239/36

Abstract: A process for producing a cyclic urea by reacting a diamine directly with phosgene with a high yield and a cheap cost is provided, which process comprises reacting a diamine expressed by the Formula R-HN-R'-NH-R wherein R represents hydrogen atom or a lower alkyl group and R' represents dimethylene group, trimethylene group, tetramethylene group or a lower alkyl group-substituted dimethylene group, trimethylene group or tetramethylene group except for three particular combinations of R with R', with phosgene substantially in the presence of water and a dehydrochlorinating agent to obtain a cyclic urea expressed by the formula wherein R and R' are as defined above.

公开(公告)号：BR9000926A

公开(公告)日：1991-02-19

申请号：BR9000926

申请日：1990-02-23

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  WADA MASARU ,  MIZUTA HIDEKI

IPC: C07C263/10 ,  C07C265/14 ,  C07C265/12

公开(公告)号：CA1259321A

公开(公告)日：1989-09-12

申请号：CA494275

申请日：1985-10-30

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  KAJIMOTO NOBUYUKI ,  WADA MASARU ,  NAKAYAMA HITOSHI ,  YAMADA TADAO

IPC: C07D233/32

Abstract: A process for producing 1,3-dimethyl-2-imidazolidinone with a high yield which comprises reacting N,N'-dimethyl-ethylene diamine and/or its hydrochloride with phosgene in the presence of a substantial amount of water and a dehydro-chlorinating agent. Particularly, higher yield is attained by carrying out the reaction in water medium while controlling a pH to the range of 3.0 to 10.0 by adding a dehydro-chlorinating agent.

公开(公告)号：AU6765087A

公开(公告)日：1987-07-30

申请号：AU6765087

申请日：1987-01-16

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YAMAGUCHI AKIHIRO ,  YAMAGUCHI KEIZABURO ,  TANABE YOSHIMITSU ,  ASANO MAKOTO ,  WADA MASARU

IPC: B41M5/26 ,  B41M5/124 ,  B41M5/155 ,  C08G61/00 ,  C08G61/02 ,  C08G61/10 ,  B41M5/14 ,  B41M5/22

Abstract: Disclosed herein are novel linear copolymers having weight average molecular weight of 500-30,000 and comprising structural units represented by the following formulae (I), (II), (III) and (IV): (I) (II) (III) (IV) wherein R1, R2 and R3 mean individually an alkyl group having 4 or fewer carbon atoms and R4 denotes an alkyl, cycloalkyl, aralkyl or phenyl group, and multivalent metal salts thereof in each of which the multivalent metal forms the multivalent metal salt between carboxyl groups within the same molecule of the copolymer or between different molecules of the copolymer; color-developing agents comprising multivalent metal-modified resins of the copolymers; and color-developing sheets obtained by coating the color-developing agents on their surfaces.

公开(公告)号：GB2156806A

公开(公告)日：1985-10-16

申请号：GB8506474

申请日：1985-03-13

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  TAMAKI AKIHIRO ,  KAJIMOTO NOBUYUKI ,  WADA MASARU

IPC: C07C209/18 ,  C07C85/06

Abstract: Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol. The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone. The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product. Hence, it becomes possible to obtain the intended product at a high selectivity from the anilines and phenylenediamines. The process of this invention is an advantageous process for the industrial production of especially the nuclearly substituted diphenylamines.

公开(公告)号：FR2561238A1

公开(公告)日：1985-09-20

申请号：FR8503774

申请日：1985-03-14

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAGATA TERUYUKI ,  TAMAKI AKIHIRO ,  KAJIMOTO NOBUYUKI ,  WADA MASARU

IPC: C07C209/18 ,  C07C87/58 ,  C07C85/24 ,  C07C87/54

Abstract: Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol. The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone. The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product. Hence, it becomes possible to obtain the intended product at a high selectivity from the anilines and phenylenediamines. The process of this invention is an advantageous process for the industrial production of especially the nuclearly substituted diphenylamines.