14.
    发明专利
    未知

    公开(公告)号:DE1768408A1

    公开(公告)日:1971-11-18

    申请号:DE1768408

    申请日:1968-05-10

    Applicant: BASF AG

    Inventor: HAHN ERWIN DR

    19.
    发明专利
    未知

    公开(公告)号:DE59309603D1

    公开(公告)日:1999-07-01

    申请号:DE59309603

    申请日:1993-08-04

    Applicant: BASF AG

    Abstract: The invention relates to a process for the preparation of compounds of the general formula I in which R to R independently of one another denote hydrogen, alkyl, alkoxy, hydroxyl or halogen, which is characterised in that compounds of the formula II are reacted with compounds of the formula III in the presence of sulphur or sulphur-releasing compounds at elevated temperature. The compounds prepared according to the invention are suitable, for example, as diazocomponents.

    20.
    发明专利
    未知

    公开(公告)号:DE59302686D1

    公开(公告)日:1996-06-27

    申请号:DE59302686

    申请日:1993-12-09

    Applicant: BASF AG

    Abstract: Process for the preparation of 1-amino-4-hydroxyanthraquinone by treating 1,4-dihydroxyanthraquinone with ammonia in aqueous medium in the presence of a base and of catalytic quantities of a reducing agent, at a temperature of from 60 to 150@C and a pressure of from 1 to 30 bar.

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