公开(公告)号：JPS5493021A

公开(公告)日：1979-07-23

申请号：JP15568177

申请日：1977-12-26

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TORISU YASUYOSHI ,  KAWAKAMI MICHIO ,  IWAMURA AKIO ,  MOMIJI SEISHICHIROU

IPC: C09B5/48

Abstract: PURPOSE:The reaction of aminoanthraquinone with an alkaline condensation agent is conducted in the presence of a specific amount of dimethylsolfoxide to produce high-quality title compound in high yield. CONSTITUTION:The reaction between 1-aminoanthraquinone and an alkaline condensation agent as potassium hydroxide is conducted in the presence of dimethylsulfoxide in an amount of 0.1-2.5 times the quantity of the aminoanthraquinone and an oxidizing agent, when necessary, an inert solvent at 80-140 C. EFFECT:Troublesome recovery process can be eliminated since the amount of dimethylsulfoxide employed is little and further the amount of caustic alkali used can be largely reduced.

公开(公告)号：JPS53144558A

公开(公告)日：1978-12-15

申请号：JP5883977

申请日：1977-05-23

Applicant: MITSUI TOATSU CHEMICALS

Inventor： MORINAKA RIYOUICHI ,  KAWAKAMI MICHIO ,  IWAMURA AKIO ,  YOSHIURA KOUICHI

IPC: C07C37/88 ,  C07C27/00 ,  C07C39/14 ,  C07C67/00

Abstract: PURPOSE:To protect coloring of beta-naphthol by addition org. phosphorous acids (>=0.001 %, pref. 0.005-0.1%) such as tris(monylphenyl)phosphite.

公开(公告)号：JPS52111550A

公开(公告)日：1977-09-19

申请号：JP2706376

申请日：1976-03-15

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YOSHIURA KOUICHI ,  KAWAKAMI MICHIO ,  IWAMURA AKIO ,  SAKAI TSUNEHIRO

IPC: C07C205/47 ,  C07C67/00 ,  C07C201/00

Abstract: PURPOSE:Dinitroanthraquinone is safely prepared without causing an evironmental pollution by the nitration of anthraquinone with a mixed acid as a nitrating agent in chlorodinitrobenzene as a solvent.

公开(公告)号：JPS5214732A

公开(公告)日：1977-02-03

申请号：JP9006375

申请日：1975-07-25

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YOSHIURA KOUICHI ,  KAWAKAMI MICHIO ,  IWAMURA AKIO ,  SAKAI TSUNEHIRO

IPC: C07C205/47 ,  C07C67/00 ,  C07C201/00 ,  C07C205/06

Abstract: PURPOSE:Nitration process to prepare industrially 1-nitroanthraquinone and dinitrotoluene.