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公开(公告)号：FR2543136A1
公开(公告)日：1984-09-28
申请号：FR8308316
申请日：1983-05-19
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMAGUCHI KEIZABURO , SUGIMOTO KENICHI , TANABE YOSHIMITSU , KAWASHIMA SABURO , YAMAGUCHI AKIHIRO
IPC: C07B61/00 , B01J23/00 , B01J23/40 , B01J23/70 , B01J25/02 , B01J27/00 , B01J27/02 , B01J27/08 , C07C20060101 , C07C67/00 , C07C201/00 , C07C205/45 , C07C221/00 , C07C225/22 , C07C97/10
Abstract: Preparation of 3,3'- or 3,4'-diaminobenzophenone by nitrating a chloronitrobenzophenone mixture obtained by the Friedel-Crafts reaction between 3- or 4-nitrobenzoyl chloride and chlorobenzene, and catalytically reducing and dechlorinating the resulting chlorodinitrobenzophenone mixture in the presence of a reduction catalyst and a dehydrochlorinating agent.
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公开(公告)号：GB2135666A
公开(公告)日：1984-09-05
申请号：GB8305456
申请日：1983-02-28
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMAGUCHI AKIHIRO , YAMAGUCHI KEIZABURO , SUGIMOTO KENICHI , TANABE YOSHIMITSU
IPC: C07C309/86 , A61B17/60 , B01J27/02 , B01J27/08 , B01J27/18 , B01J27/24 , C07C67/00 , C07C301/00 , C07C303/08 , C07C317/14 , C07C143/70 , C07C147/06
Abstract: A process for the preparation of 4-chlorobenzenesulfonyl chloride wherein chlorobenzene is reacted with chlorosulfonic acid in a halogenated aliphatic hydrocarbon in the presence of an alkali metal salt of a mineral acid and/or an ammonium salt of a mineral acid. After washing the resulting reaction mixture with water and separating the halogenated aliphatic hydrocarbon layer, water may be distilled off, together with the halogenated aliphatic hydrocarbon to obtain 4-chlorobenzenesulfonyl chloride in an anhydrous state. The 4- chlorobenzenesulfonyl chloride obtained can be converted into 4,4'-dichlorodiphenyl sulfone by reacting it with chlorobenzene in the presence of a catalytic amount of ferric chloride.
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公开(公告)号：DE3306597A1
公开(公告)日：1984-08-30
申请号：DE3306597
申请日：1983-02-25
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMAGUCHI AKIHIRO , YAMAGUCHI KEIZABURO , SUGIMOTO KENICHI , TANABE YOSHIMITSU
IPC: C07C309/86 , A61B17/60 , B01J27/02 , B01J27/08 , B01J27/18 , B01J27/24 , C07C67/00 , C07C301/00 , C07C303/08 , C07C317/14 , C07C143/70
Abstract: Process for the preparation of 4-chlorobenzenesulphonyl chloride in which chlorobenzene is reacted with chlorosulphonic acid in a halogenated aliphatic hydrocarbon in the presence of an alkali metal salt of a mineral acid and/or an ammonium salt of a mineral acid. After washing the resulting reaction mixture with water and separating off the halogenated aliphatic hydrocarbon layer, water is distilled off together with the halogenated aliphatic hydrocarbon in order to obtain 4-chlorobenzenesulphonyl chloride in anhydrous form. The anhydrous 4-chlorobenzenesulphonyl chloride thus obtained can be converted into 4,4'-dichlorodiphenyl sulphone by reaction with chlorobenzene in the presence of a catalytic amount of iron(III) chloride.
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公开(公告)号：IT8422246D0
公开(公告)日：1984-08-07
申请号：IT2224684
申请日：1984-08-07
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMAGUCHI KEIZABURO , YOSHIKAWA YUKIHIRO , TANABE YOSHIMITSU , SUGIMOTO KENICHI , YAMAGUCHI AKIHIRO
IPC: C08G73/00 , C07C20060101 , C07C67/00 , C07C213/00 , C07C213/06 , C07C217/82 , C07C217/90 , C08G73/10 , C07C
Abstract: 1,3-Bis(3-aminophenoxy)-5-halogenobenzenes represented by the formula (I): (I) wherein X is a chlorine or bromine atom, are novel compounds and can be prepared by reacting trihalogenobenzenes represented by the formula (II): (II) wherein X1, X2 and X3 are each a chlorine or bromine atom, with 3-aminophenol in the presence of a dehydrohalogenating agent.
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公开(公告)号：AU1145283A
公开(公告)日：1983-08-25
申请号：AU1145283
申请日：1983-02-16
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMAGUCHI KEIZABURO , SUGIMOTO KENICHI , TANABE YOSHIMITSU , YAMAGUCHI AKIHIRO
IPC: C07C309/40 , C07C147/12
Abstract: 3,3'-diamino diphenylsulfones are prepared by catalytically reducing and dehalogenating, in the presence of a reduction catalyst and a dehydrohalogenation agent, a diphenylsulfone compound of the general formula in which X is a halogen atom and Y is hydrogen or a halogen atom.
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Patent Agency Ranking
公开(公告)号：IT8321578D0
公开(公告)日：1983-06-13
申请号：IT2157883
申请日：1983-06-13
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMAGUCHI KEIZABUTO , SUGIMOTO KENICHI , TANABE YOSHIMITSU , KAWASHIMA SABURO , YAMAGUCHI AKIHIRO
IPC: C07B61/00 , B01J23/00 , B01J23/40 , B01J23/70 , B01J25/02 , B01J27/00 , B01J27/02 , B01J27/08 , C07C20060101 , C07C67/00 , C07C201/00 , C07C205/45 , C07C221/00 , C07C225/22 , C07C
Abstract: Preparation of 3,3'- or 3,4'-diaminobenzophenone by nitrating a chloronitrobenzophenone mixture obtained by the Friedel-Crafts reaction between 3- or 4-nitrobenzoyl chloride and chlorobenzene, and catalytically reducing and dechlorinating the resulting chlorodinitrobenzophenone mixture in the presence of a reduction catalyst and a dehydrochlorinating agent.
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公开(公告)号：IT8223731D0
公开(公告)日：1982-10-13
申请号：IT2373182
申请日：1982-10-13
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMAGUCHI AKIHIRO , YAMAGUCHI KEIZABURO , SUGIMOTO KENICHI , TANABE YOSHIMITSU
IPC: C07C20060101 , C07C
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公开(公告)号：DE2911945A1
公开(公告)日：1979-10-04
申请号：DE2911945
申请日：1979-03-27
Applicant: MITSUI TOATSU CHEMICALS
Inventor： ASANO MAKOTO , KOBAYASHI TADASHI , KAWASHIMA SABURO , SUGIMOTO KENICHI , MURAKAMI HISAMICHI
IPC: B41M5/155 , C08K5/13 , C08K5/3475 , C08K5/372 , B41M5/12
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公开(公告)号：AU4535479A
公开(公告)日：1979-10-04
申请号：AU4535479
申请日：1979-03-20
Applicant: MITSUI TOATSU CHEMICALS
Inventor： ASANO MAKOTO , KOBAYASHI TADASHI , KAWASHIMA SABURO , SUGIMOTO KENICHI , MURAKAMI HISAMICHI
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公开(公告)号：DE69317316D1
公开(公告)日：1998-04-16
申请号：DE69317316
申请日：1993-03-30
Applicant: MITSUI TOATSU CHEMICALS
Inventor： ITOH HISATO , KARASAWA AKIO , SUGIMOTO KENICHI
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