公开(公告)号：EP0578655B1

公开(公告)日：1996-07-31

申请号：EP92906628

申请日：1992-03-19

Applicant: BASF AG

Inventor： KOHLHAUPT REINHOLD ,  BERGMANN UDO ,  HAAS LOTHAR

IPC: C09B7/04

CPC classification number: C09B7/04

公开(公告)号：BR9201132A

公开(公告)日：1992-12-01

申请号：BR9201132

申请日：1992-03-31

Applicant: BASF AG

Inventor： KOHLHAUPT REINHOLD ,  GAENG MANFRED ,  BIEG WALTER ,  FANKHAENEL MATTHIAS ,  HAAS LOTHAR ,  ENGELHARDT GUENTER

IPC: C07D209/36 ,  C09B7/02 ,  C09B7/00 ,  C09C3/06

Abstract: A process for the preparation of purified indigo comprises extracting the aqueous alkaline indoxylate solution arising from the synthesis with an inert water-insoluble solvent in the absence of oxygen before oxidizing the indoxylate solution to give indigo.

公开(公告)号：DE4110458A1

公开(公告)日：1992-10-01

申请号：DE4110458

申请日：1991-03-30

Applicant: BASF AG

Inventor： KOHLHAUPT REINHOLD DR ,  BERGMANN UDO DR ,  HAAS LOTHAR

IPC: C09B7/04

Abstract: The invention concerns a method for the preparation of halogenated indigo by reacting indigo with bromine and/or chlorine, optionally using iodine as a catalyst, characterized in that thionyl chloride is used as the reaction medium.

公开(公告)号：BR9205812A

公开(公告)日：1994-06-28

申请号：BR9205812

申请日：1992-03-19

Applicant: BASF AG

Inventor： KOHLHAUPT REINHOLD ,  BERGMANN UDO ,  HAAS LOTHAR

IPC: C09B7/04

公开(公告)号：ES2044730T3

公开(公告)日：1994-01-01

申请号：ES92105033

申请日：1992-03-24

Applicant: BASF AG

Inventor： KOHLHAUPT REINHOLD DR ,  GAENG MANFRED DR ,  BIEG WALTER ,  FANKHAENEL MATTHIAS DR ,  HAAS LOTHAR ,  ENGELHARDT GUENTER DR

IPC: C07D209/36 ,  C09B7/02

Abstract: A process for the preparation of purified indigo comprises extracting the aqueous alkaline indoxylate solution arising from the synthesis with an inert water-insoluble solvent in the absence of oxygen before oxidizing the indoxylate solution to give indigo.

公开(公告)号：DE59200014D1

公开(公告)日：1993-11-04

申请号：DE59200014

申请日：1992-03-24

Applicant: BASF AG

Inventor： KOHLHAUPT REINHOLD DR ,  GAENG MANFRED DR ,  BIEG WALTER ,  FANKHAENEL MATTHIAS DR ,  HAAS LOTHAR ,  ENGELHARDT GUENTER DR

IPC: C07D209/36 ,  C09B7/02

Abstract: A process for the preparation of purified indigo comprises extracting the aqueous alkaline indoxylate solution arising from the synthesis with an inert water-insoluble solvent in the absence of oxygen before oxidizing the indoxylate solution to give indigo.