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    11.
    发明专利
    未知

    公开(公告)号：DE2851751A1

    公开(公告)日：1980-06-19

    申请号：DE2851751

    申请日：1978-11-30

    Applicant: BASF AG

    Inventor： MENSCH SIEGFRIED DIPL CHEM DR ,  EPPLE GERHARD DIPL CHEM DR ,  ELSER WOLFGANG DIPL CHEM DR

    IPC: C09B1/58 ,  C09B1/62 ,  D06P3/60 ,  D06P3/82 ,  D06P1/20

    Abstract: Uniformly dyed water-swellable cellulosic fibers which have been produced by contacting water-swellable cellulosic fibers successively or simultaneously with water, with ethylene glycol, propylene glycol or derivatives of these and with an essentially water-insoluble dye of the formula where Y is unsubstituted or substituted phenyl or naphthyl or an unsubstituted or substituted saturated or unsaturated 5-membered or 6-membered heterocyclic radical, two of the three radicals X are hydroxyl and the remaining radical X is where A is chlorine, bromine, cyano, nitro, an aliphatic, cycloaliphatic, araliphatic or aromatic radical and n is 0, 1, 2 or 3 and where, if n>1, the radicals are identical or different. Deep reddish blue to green dyeings or prints are obtained. The dyeings have very good fastness characteristics.

    Pure (1,5)-dinitro-anthraquinone prodn. - from isomer mixts. by selective redn. of other isomers with hydrazine
    15.
    发明专利
    Pure (1,5)-dinitro-anthraquinone prodn. - from isomer mixts. by selective redn. of other isomers with hydrazine 未知

    公开(公告)号：DE2530067A1

    公开(公告)日：1977-02-03

    申请号：DE2530067

    申请日：1975-07-05

    Applicant: BASF AG

    Inventor： EPPLE GERHARD DIPL CHEM DR

    IPC: C07C201/16 ,  C07C79/37 ,  C07C76/06

    Abstract: Pure or extremely pure 1,5-dinitroanthraquinone (I) is prepd. fromdinitroanthraquinone isomer mixts. (II) by treating a suspension of (II) in a water-miscible, polar, aprotic organic liquid (III) at 20-100 degrees c with 1-2.2 moles N2H4 per mole of dinitroanthraquinones other than (I). After the reaction the undissolved (I) is recovered. (I) is a dye intermediate and is obtd. in good yields of purity >=90 wt.%. The filtrate can be worked up to recover other useful dye intermediates e.g. reduction to mixed diaminoanthraquinones contg. a high proportion of 1,8-isomer. Suitable (III) include DMF, DMSO or sulpholane used at 1-5 wt. pts. per pt. (II). In an example, (I) of 95.5% purity was recovered from a (II) contg. 52.6% (I), 45.1% 1,8-dinitro isomer and 2.2% other isomers.

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