4.
    发明专利
    未知

    公开(公告)号:DE2942185A1

    公开(公告)日:1981-04-30

    申请号:DE2942185

    申请日:1979-10-18

    Applicant: BASF AG

    Abstract: Compounds of the general formula I A-B-A (I) where A is a radical of the formula and B is a bridge member of the formula and where R1 and R2 independently of one another are unsubstituted or hydroxy-, C1-C4-alkoxy-, cyano-, C1-C4-alkoxycarbonyl-, di-C1-C4-alkylamino-, chlorine- or bromine-substituted C1-C4-alkyl, cyclohexyl, benzyl, phenylethyl or phenyl, or R1 and R2 together with the nitrogen are morpholino, pyrrolidino, piperidino or N-methylpiperazino, R3 is hydrogen, chlorine, bromine, methyl, ethyl, methoxy, ethoxy or nitro, R4 and R5 independently of one another are hydrogen, C1-C4-alkyl or benzyl, X is oxygen or imino and alkylene is of 2 to 6 carbon atoms and is linear or branched. The compounds of the formula I are particularly suitable for coloring paper pulps.

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